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Installation, Operation and
Maintenance Manual
SAMPLE SENTRY® II
Sample Conditioning Modules
SPD 1.1.16 Rev. 7
SENTRY EQUIPMENT CORP
PO Box 127
Oconomowoc, WI 53066 USA
Phone: 262.567.7256
Fax: 262.567.4523
Email: sales@sentry-equip.com
www.sentry-equip.com
Sample Sentry® II
SPD 1.1.16 Rev 7
Certification
The Sample Sentry®II has been tested and is certified to the following standards:
Product Safety:
Machinery Directive 98/37/EC
Required Standards include:
EN ISO 12100-1:2003
Safety of machinery – Basic concepts, general principles for design.
Basic terminology, methodology
EN ISO 12100-2:2003
Safety of machinery – Basic concepts, general principles for design. Technical principles
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i
Sample Sentry® II
SPD 1.1.16 Rev 7
TABLE OF CONTENTS
SPECIFICATIONS........................................................................................................................ 1
SAFETY PRECAUTIONS............................................................................................................. 2
Use of Hazard Information ................................................................................................ 2
Definitions ......................................................................................................................... 2
GENERAL DESCRIPTION........................................................................................................... 4
OPERATION ................................................................................................................................ 9
Description of Controls...................................................................................................... 9
Screen Descriptions........................................................................................................ 11
Operation Screen ................................................................................................ 12
Alarm Screen....................................................................................................... 13
Main Menu........................................................................................................... 13
Display Intensity .................................................................................................. 14
Analog Inputs ...................................................................................................... 14
Scale ................................................................................................................... 14
Setup ................................................................................................................... 15
Flow Rates .......................................................................................................... 15
Blowdown Time ................................................................................................... 16
Continued Setup ................................................................................................. 16
Pressures ............................................................................................................ 17
PRV Type ............................................................................................................ 17
Clean ................................................................................................................... 18
Continued Setup (Screen 2)................................................................................ 18
Alarm Setup......................................................................................................... 18
Units .................................................................................................................... 19
Options ................................................................................................................ 19
MODBUS® ........................................................................................................... 20
PID ...................................................................................................................... 20
Home................................................................................................................... 20
Resetting Alarms ................................................................................................. 21
Motor Alarm......................................................................................................... 21
INSTALLATION ......................................................................................................................... 21
Unpacking ....................................................................................................................... 22
Mounting ......................................................................................................................... 22
Connections .................................................................................................................... 22
Electrical Connections .................................................................................................... 24
Power Connection........................................................................................................... 24
Startup ............................................................................................................................ 25
MAINTENANCE ......................................................................................................................... 26
Sample Cooler ................................................................................................................ 26
Disassembly & Reassembly................................................................................ 26
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ii
Sample Sentry® II
SPD 1.1.16 Rev 7
VREL®/Needle Valve....................................................................................................... 26
Inlet Isolation Valve......................................................................................................... 27
Backpressure Regulating/Relief Valve............................................................................ 27
Controller ........................................................................................................................ 28
Fuses .................................................................................................................. 28
Analog Input Calibration ...................................................................................... 30
Calibration....................................................................................................................... 30
Factory Settings – ............................................................................................... 32
TROUBLESHOOTING GUIDE ................................................................................................... 33
FACTORY ASSISTANCE .......................................................................................................... 34
SPARE PARTS LIST.................................................................................................................. 35
WARRANTY ............................................................................................................................... 37
APPENDIX A - MODBUS® ........................................................................................................ 39
List of Tables
Table 1 – Control Descriptions .................................................................................................................. 9
Table 2 – Power Cord Requirements ...................................................................................................... 24
Table 3 – Channel Calbration Reference ................................................................................................ 31
Table 4 – Factory Settings....................................................................................................................... 32
Table 5 – Troubleshooting Guide ............................................................................................................ 33
Table 6 – MODBUS® Registers .............................................................................................................. 40
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iii
Sample Sentry® II
SPD 1.1.16 Rev 7
List of Figures
Figure 1 – System P&ID ............................................................................................................................ 5
Figure 2 – System P&ID With Secondary Cooling..................................................................................... 6
Figure 3 – Controller Front Panel ............................................................................................................ 10
Figure 4 – Screen Navigation .................................................................................................................. 11
Figure 5 – Operation Screen ................................................................................................................... 12
Figure 6 – Alarm Screen.......................................................................................................................... 13
Figure 7 – Main Menu.............................................................................................................................. 13
Figure 8 – Display Intensity ..................................................................................................................... 14
Figure 9 – Analog Input Menu ................................................................................................................. 14
Figure 10 – Scale Selection Screen ........................................................................................................ 14
Figure 11 – Change Scale ....................................................................................................................... 15
Figure 12 – Setup Screen........................................................................................................................ 15
Figure 13 – Flow Rates............................................................................................................................ 15
Figure 14 – Blowdown Time .................................................................................................................... 16
Figure 15 – Continued Setup................................................................................................................... 16
Figure 16 – Startup Pressure................................................................................................................... 17
Figure 17 – PRV Type ............................................................................................................................. 17
Figure 18 – VREL® Cleaning Frequency ................................................................................................. 18
Figure 19 – Continued Setup (Screen 2) ................................................................................................. 18
Figure 20 – Alarm Setup.......................................................................................................................... 18
Figure 21 – Units ..................................................................................................................................... 19
Figure 22 – Measurement Options .......................................................................................................... 19
Figure 23 – MODBUS® Setup................................................................................................................. 20
Figure 24 – PID Setup ............................................................................................................................. 20
Figure 25 – Manual Home ....................................................................................................................... 20
Figure 26 – General Arrangement (High Pressure Model) ...................................................................... 23
Figure 27 – Channel Configuration on SSII CPU Board .......................................................................... 30
Figure 28 – MODBUS® Setup................................................................................................................. 39
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iv
Sample Sentry® II
SPD 1.1.16 Rev 7
WARNING notices as used in this manual apply to hazards or unsafe practices, which could result in
personal injury or death.
CAUTION notices apply to hazards or unsafe practices which could result in minor personal injury or
property damage.
NOTES highlight procedures and contain information which assists the operator in understanding the
information contained in this manual.
WARNING
Do not install, maintain, or operate this equipment without reading, understanding and
following the proper Sentry Equipment Corp. instructions. Otherwise, injury or damage or
both may result.
NOTICE
The information contained in this document is subject to change without notice.
Sentry Equipment Corp, its employees, agents, and the authors of and contributors to this document
specifically disclaim all liabilities and warranties, express and implied (including warranties of
merchantability and fitness for a particular purpose), for the accuracy, currency, completeness, and/or
reliability of the information contained herein and/or for the fitness for any particular use and/or for the
performance of any material and/or equipment selected in whole or part with the user of/or in reliance
upon information contained herein. Selection of materials and/or equipment is at the sole risk of the user
of this publication.
This document contains proprietary information. No part of this document may be photocopied or
reproduced without the prior written consent of Sentry Equipment Corp.
Sentry Equipment Corp
966 Blue Ribbon Circle North
PO Box 127
Oconomowoc, WI 53066
Phone:
Fax:
262.567.7256
262.567.4523
Normal business hours: 7:00 a.m. to 4:30 p.m. CST (U.S. Central Time), Monday through Friday
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v
Sample Sentry® II
SPD 1.1.16 Rev 7
SPECIFICATIONS
Specifications are subject to change without notice.
Applications: Sample Sentry® II is designed
to meet requirements for representative
sampling by maintaining a constant flow
rate with varying inlet conditions.
Models:
Low Pressure Models (LP)
0 – 500 PSI (0 – 35 bar)
@ 450 F (232 C)
High Pressure Models (HP)*
500 – 3030 PSI (35 – 209 bar)
@1000 F (540 C)
Flow Control:
Range ................ 0 – 3400 cc/min
Accuracy ............. ± 50 cc/min
Measurements:
Final Sample Temperature
Cooling Water Outlet Temperature
Inlet Sample Temperature
Inlet Sample Pressure
Analyzer Sample Pressure
Sample Flow Rate
Power:
Input Voltage: 100 - 240 VAC
Frequency Range: 50/60 Hz
Input Current:
1.5 A / 115 V
0.9 A / 230 V
Compressed Air:
Consumption : < 0.2 scfm
Pressure : 80 PSI minimum
Dimensions:
with sink
14 in. x 43 in. (356 mm x 1092 mm)
without sink
14 in. x 36 in. (356 mm x 914 mm)
Mounting: Wall mount using four 3/8” bolts
Ambient Temperature: 0-50 C (32-122 F)
RH 95% max. non-condensing at
40 C (104 F) max.
Approximate Shipping Weight:
65 lbs max (29 kg)
Pressure Measurements:
Range ................ 0 – 3000 PSI (0 – 207 bar)
Accuracy ............. ± 0.5%
Temperature Measurements:
Range ................ 32 – 250 F (0 – 121 C)
Accuracy ............. ± 1 F
Alarm Relay Contact Rating:
Max. operating voltage ........... 250 VAC
220 VDC
Max. switching capacity ......... 30 W, 62.5 VA
inductive
60 W, 125 VA
resistive
Communications:
Protocol................................... MODBUS®
Network................................... RS-485
* Higher pressure model available.
Display: Graphical Vacuum Fluorescent
Display
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1
Sample Sentry® II
SPD 1.1.16 Rev 7
SAFETY PRECAUTIONS
Please read the entire manual before attempting to unpack, set up or operate this product. Pay careful attention to
all warnings, cautions and notes. Failure to do so could result in serious personal injury or equipment damage.
Use of Hazard Information
If multiple hazards exist, the signal word corresponding to the greatest hazard shall be used.
Definitions
Indicates an imminently hazardous situation that, if not avoided, will result in death or
serious injury.
Indicates a potentially hazardous situation that, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation that, if not avoided, may result in minor or
moderate injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation
that, if not avoided, may result in property damage.
NOTE
Information that requires special emphasis
SHALL
This word understood to be mandatory
SHOULD
This word understood to be advisory
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Sample Sentry® II
SPD 1.1.16 Rev 7
Indique une situation imminente et dangeureuse qui doit être évité immédiatement afin
d’éviter tout risque de blessures sérieuses et qui pourrait même entraîner la mort.
AVERTISSEMENT
Indique une situation potentiellement dangeureuse et qui doit être évité immédiatement
afin d’éviter tout risque de blessures sérieuses et qui pourrait même entraîner la mort.
PRÉCAUTION
Indique une situation potentiellement dangeureuse et qui doit être évité immédiatement
afin d’éviter tout risque de blessures mineures.
PRÉCAUTION
ATTENTION une utilisation sans le symbole de sécurité indique une situation
potentiellement dangeureuse et que si elle n’est pas évité, pourrait entrainer des
dommages à la propriété.
NOTE
Informations requérant une attention spéciale
DOIT
Ce mot indique une obligation
POURRAIT
Ce mot indique un avertissement
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3
Sample Sentry® II
SPD 1.1.16 Rev 7
GENERAL DESCRIPTION
Flow control of liquid sample is important to help assure the quality of the samples and
repeatability of the analytical results. Constant flow in the sample line minimizes the chance
of modifying the chemistry of the samples of high purity water through entrapment and/or
release of soluble species from deposits in the system.
Sample inlet temperature and flow are easily controlled under constant conditions. However,
since sample pressures typically fluctuate, maintaining a representative sample can be difficult
and labor intensive. The traditional manual sample conditioning system can require constant
adjustment during startup or as plant conditions change.
Sample Sentry® II is designed to meet requirements for representative sampling by maintaining
a constant flow rate with varying inlet conditions. Automated flow control is achieved by
continuously monitoring the sample flow rate and controlling a motorized pressure reduction
valve (PRV). An acutuated ball valve and solenoid valve controls the flow path, allowing for
automatic startup and shutdown of the system. Flow control is also available in a manual
mode, allowing the operator to control the system with a keypad on the controller. Sensors
allow the controller to monitor temperature, pressure, and flow and shutdown the system when
an alarm occurs. Programmable options in the controller allow Sample Sentry®II to conform to
a variety of sampling applications.
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4
Sample Sentry® II
SPD 1.1.16 Rev 7
Figure 1 is a typical P&ID of a Sample Sentry® II system.
CUSTOMER CONNECTIONS
1) SAMPLE INLET
2) SAMPLE OUTLET
3) PRIMARY COOLING WATER INLET
4) PRIMARY COOLING WATER OUTLET
5) SECONDARY COOLING WATER INLET*
6) SECONDARY COOLING WATER OUTLET*
7) SINK DRAIN
8) AIR INLET
1
3
V-2
V-5
TE
3
COOLER DRAIN
SC-1
V-4
4
PT
1
V-1
SV-1
A
8
S
M
PRV (VREL / NEEDLE VALVE)
CONTROLLER
TE
1
FT
1
FE
1
S
2
SV-2
BPR/RV
GRAB SAMPLE
SINK*
* = OPTIONAL ITEMS
7
Figure 1 – System P&ID
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5
Sample Sentry® II
SPD 1.1.16 Rev 7
Figure 2 is a P&ID of a Sample Sentry® II system with secondary cooling.
CUSTOMER CONNECTIONS
1) SAMPLE INLET
2) SAMPLE OUTLET
3) PRIMARY COOLING WATER INLET
4) PRIMARY COOLING WATER OUTLET
5) SECONDARY COOLING WATER INLET*
6) SECONDARY COOLING WATER OUTLET*
7) SINK DRAIN
8) AIR INLET
1
V-2
4
V-5
TE
3
COOLER DRAIN
SC-1
V-4
3
PT
1
V-1
SV-1
A
8
S
M
PRV (VREL / NEEDLE VALVE)
TE
2
*
6
SC-2 *
5
CONTROLLER
TE
1
FT
1
FE
1
S
2
SV-2
BPR/RV
GRAB SAMPLE
SINK*
* = OPTIONAL ITEMS
7
Figure 2 – System P&ID With Secondary Cooling
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6
Sample Sentry® II
SPD 1.1.16 Rev 7
Upon power being supplied to the Sample Sentry® II, the unit enters its startup routine. During
Startup, always ensure that unit’s sample isolation valve is closed (Located next to customer
connection 1 in Figure1 and Figure 2). During this startup routine, the unit’s revision date and a
Sentry logo are displayed. See Figure 3. During the unit’s startup routine, the fully closed
position of the PRV is being located. Once located, the unit verifies the fully closed position is
correct by cycling through the full range of the PRV. The Unit then adjusts to the PRV home set
point. Any time that the Sample Sentry® II power is reset, the unit will enter its startup routine
and locate the PRV’s fully closed position, followed by the units PRV home position. Once
startup has been completed successfully, the Operation screen will be displayed. Refer to
Figure 5.
Sample Sentry® II has two modes of operation, Manual and Automatic. Automatic mode is
comprised of the following states: Start, Blowdown, Sample, and Stop.
Start is the first state in Automatic mode. While in the Start state the valves V-1 and SV-2 are
closed. The PRV should be in its home set point position. For older models, this home set point
is not customer adjustable and is set to zero. On new models, the PRV home set point position
can be customer adjustable between 0 and 52 (0 being fully closed and 52 being fully open) If
an adjustable set point is desired, please contact Sentry Equipment Corp. for instructions on
how to adjust this PRV home setpoint. The system continually monitors the inlet pressure at PT1 and compares it to a programmed Startup Pressure set point in the controller. When the inlet
pressure is greater than the Startup Pressure set point, the system will advance to the
Blowdown state.
When enabled, the Blowdown state initiates a controlled blowdown sequence by opening V-1
and closing SV-2. Blowdown is designed to flush the sample line while preventing flow to
analyzers. The controller continually adjusts the PRV, maintaining a flow rate at the
programmed blowdown flow rate set point. By closing SV-2, sample flow to analyzers is
stopped and the entire sample flows to the grab sample. Sample Sentry®II remains in the
Blowdown state until the blowdown timer expires. The blowdown timer is a programmable set
point in the controller.
NOTE
Ensure sufficient blowdown time and flowrate are obtained to remove debris from the
sample stream prior to sending sample to the analyzers.
After blowdown, Sample Sentry®II advances to the Sample state. In the Sample state, SV-2
opens allowing flow to analyzers. The controller continually adjusts the PRV, maintaining a flow
rate at the programmed sample flow rate. The system remains in the Sample state until one of
the following conditions are met:
1. Low Flow
a. The PRV is full open.
b. The total flow rate falls below the shutdown flow rate set point.
2. Low Pressure
a. The pressure falls below the shutdown pressure set point.
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7
Sample Sentry® II
SPD 1.1.16 Rev 7
When one of the above conditions is met, the system advances to the Stop state. In the
Stop state, the controller closes SV2, adjusts the PRV to its home set point, and then closes
V-1. After all three valves are in their respective positions; the system will advance to the
Start state if automatic startup is enabled or Manual mode if disabled.
The position of the pressure reduction valve and state of the valves are graphically displayed on
the user interface. Temperature, pressure, and flow are also displayed. The MODBUS®
feature provides added advantages including remote monitoring and control of the system. The
capabilities of MODBUS® are further addressed in Appendix A.
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8
Sample Sentry® II
SPD 1.1.16 Rev 7
OPERATION
To ensure the protection provided by this equipment is not impaired, this equipment must not be
installed or used in any manner other than that which is specified in this manual.
AVERTISSEMENT
Afin de s’assurer que la protection prévue par cette pièce d’équipement n’est pas défaillante, cet
équipement ne doit pas être installé ou utilisé de manière autre que spécifié dans le manuel.
Description of Controls
Table 1 and Figure 3 describe controls on the Sample Sentry® II controller.
DESCRIPTION
MENU key
ENTER key
ESC key
Arrow keys
▲
▼
Cursor
FUNCTION
From the operation screen in when the unit is in Manual
mode, pressing the MENU key will display the password
screen for the main menu. In order to enter the menu
screen you must enter the password 101 followed by the
ENTER key. If a correct password is entered, the main menu
screen will appear.
From an alarm screen, pressing the MENU key will clear the
alarm.
From the operation screen, pressing the ENTER key will
toggle the controller between the Automatic and Manual
modes.
While navigating through the menu screens, pressing the
ENTER key will select the option indicated by the cursor
(►).
From the operation screen, pressing the ESC key will toggle
the states between Blowdown and Sample.
While in the menu screens, pressing the ESC key will exit
the current screen. Any changes are automatically saved.
While in Manual mode, pressing the arrow keys will open
and close the PRV.
While navigating through the menu screens, use the arrow
keys to move the cursor to the option you want to choose.
While editing fields and timers, use the arrow keys to change
the value in the current field.
Indicates the cursor position on the menu screens.
►
Table 1 – Control Descriptions
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9
Sample Sentry® II
SPD 1.1.16 Rev 7
Figure 3 – Controller Front Panel
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10
Sample Sentry® II
SPD 1.1.16 Rev 7
Screen Descriptions
Figure 4 shows the screen structure in the Sample Sentry® II controller.
Operation Screen
Main Menu
Setup
Analog Inputs
Auto Cal
Flow Rates
Scale
Manual Cal
Blowdown Time
Startup Pressure
Alarms
Display
Units
PRV Type
Options
More
Clean
MODBUS
More
PID
Home
Figure 4 – Screen Navigation
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11
Sample Sentry® II
SPD 1.1.16 Rev 7
Operation Screen
The operation screen is the main screen on the Sample Sentry®II. This screen contains
information indicating the status of the system. While in Manual mode, the system is controlled
from the operation screen.
I n l e t
1
B l o w d o w
0 : 2 7 : 3
V 1
S V
5 0 0
n
1
7
2
P S I
4
0
7
c c
m i n
P R V
Figure 5 – Operation Screen
Figure 5 shows a typical operation screen for the Sample Sentry®II. The top line displays
temperature and pressure data. The screen periodically refreshes to show a different
measurement. Only measurements that are enabled are displayed.
Line 4 displays the state of the three valves. Figure 5 currently shows valve V1 open, SV2
closed, and the PRV partially open.
Line 2 displays the state of the system, including the total flow rate. The 7 possible states are
Manual, Start, Blowdown, Sample, Stop, Remote and Clean.
Manual: While in manual mode, the system can be controlled with the keypad on the front of the
controller. Pressing the MENU key will display the Main Menu password screen. To place the
system in Automatic mode, press the ENTER key. Pressing the ESC key will toggle valves V1
and SV2 between open and closed. Holding the ▲ key will open the PRV, while holding the ▼
key will close the PRV.
Start: The controller waits in the Start state until the inlet pressure is greater than the
programmed startup pressure. The only key that is functional while in the Start state is the
ENTER key. Pressing the ENTER key will return the system to Manual mode.
Blowdown: Flow to analyzers is stopped by closing SV2, forcing the entire sample to flow to the
grab sample. When the system is in Blowdown, the time remaining in Blowdown is displayed on
line 3. Pressing the ENTER key will return the system to Manual mode. Pressing the ESC key
will advance the system to Sample.
Sample: The controller opens SV2, allowing flow to analyzers. Pressing the ENTER key will
return the system to Manual mode. Pressing the ESC key will return the system to Blowdown.
Stop: The Stop state occurs when the total flow falls below a shutdown set point and the PRV
is full open or if the pressure is lower than the shutdown pressure set point. During the Stop
state V1 is closed, the PRV is adjusted to it set point, and SV2 is closed. After these valves are
adjusted, the controller will advance to Start if automatic startup is enabled or Manual if disabled.
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Sample Sentry® II
SPD 1.1.16 Rev 7
Remote: Remote indicates the system is being controlled remotely with the MODBUS®
communications port. While in the Remote mode, the controller enters the Blowdown and
Sample states as determined from remote commands. Pressing the ENTER key will return the
system to Manual mode.
Clean: When the self-clean feature is enabled, the controller periodically actuates the VREL® in
an attempt to free potential blockages. The cleaning cycles opens the VREL® for 5 seconds,
waits for 3 seconds, closes the VREL® for 5 seconds, waits for 3 seconds. This process is
repeated 5 times. After the cleaning cycle is complete, the controller returns to the previous
state.
Alarm Screen
A l a r m
H i g h
T e m p e r a t u r e
T o u t
=
1 2 5
F
Figure 6 – Alarm Screen
Figure 6 shows a typical alarm screen. Anytime an alarm condition occurs, the alarm screen
takes priority over the existing screen. The alarm screen will flash twice per second, alerting the
operator of the problem. After the alarm condition has cleared, pressing the MENU button will
reset the alarm.
Main Menu
M a i n
M e n u
►S e t u p
A n a l o g
I n p u t s
D i s p l a y
Figure 7 – Main Menu
Figure 7 shows the main menu screen. The main menu is reached by pressing the MENU key
from the operation screen with the system in Manual. The cursor indicates the option you wish
to choose. Move the cursor by using the ▲ and ▼ keys. Select the option by using the ENTER
key. To exit this screen and return to the operation screen, press the ESC key. The Main Menu
password is 101.
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13
Sample Sentry® II
SPD 1.1.16 Rev 7
Display Intensity
D i s p l a y
I n t e n s i
L e v e l
1 - 8
6
t y
Figure 8 – Display Intensity
Figure 8 shows the Display Intensity screen. This screen allows the intensity of the graphical
display to be adjusted. To increase the intensity, use the ▲ key. To decrease the intensity, use
the ▼ key. The display setting is represented by a number between 1 and 8, with 8
representing the brightest setting. Press the ESC key to save changes and return to the main
menu.
Analog Inputs
A n
►A
S
M
a
u
c
a
l
t
a
n
o g
I n p u t
S e t u p
o
C a l i b r a t i o n
l e
u a l
C a l i b r a t i o n
Figure 9 – Analog Input Menu
Figure 9 shows the analog input menu screen. This screen can be accessed by enter 202 for the
Analog Input Setup Password. The cursor indicates the option you wish to choose. Move the
cursor using the ▲ and ▼ keys. Select the option using the ENTER key. To exit this screen
and return to the main menu, press the ESC key.
For information on calibrating the analog inputs, please refer to the Maintenance section of this
manual.
Scale
S c a l e
C h a n n e l
1
Figure 10 – Scale Selection Screen
Figure 10 shows the scale channel selection screen. To change the selected channel to scale,
use the ▲ and ▼ keys. To select the channel, press the ENTER key. To return to the analog
input setup screen, press the ESC key.
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14
Sample Sentry® II
SPD 1.1.16 Rev 7
S c a l e
C h a n n e l
3
M i n
0
P S I
Figure 11 – Change Scale
Figure 11 shows the change scale screen. This screen is displayed after selecting the channel
in the scale selection screen. To change the Min value, use the ▲ and ▼ keys. When finished
changing the Min value, press the ENTER key to display and alter the Max value. Change the
Max value using the ▲ and ▼ keys. When finished changing the Max value, press the ENTER
key to return to the scale selection screen.
Setup
S e t u p
R a t e s
B l o w d o w n
T i m e
Mo r e
►F l o w
Figure 12 – Setup Screen
Figure 12 shows the setup screen. The cursor indicates the option you wish to choose. Move
the cursor using the ▲ and ▼ keys. Select the option using the ENTER key. To exit this screen
and return to the main menu, press the ESC key.
Flow Rates
F l o w
R a t e s
B l o w d o w n
1 5 0 0
c c / m i n
Figure 13 – Flow Rates
Figure 13 shows the flow rates setup screen. The first set point displayed is the blowdown flow
rate. To adjust the set point, use the ▲ and ▼ keys. To change the set point in counts of 100,
hold the MENU key while using the ▲ and ▼ keys. When finished changing the displayed set
point, press the ENTER key to display the next set point. After setting the last flow rate,
pressing ENTER will return to the setup screen. The following flow rates can be programmed:
Blowdown: This flow rate is used during the Blowdown state. During this time, the entire sample
flows to the grab sample, preventing flow to analyzers. This mode is designed to flush the
sample at a slightly higher flow rate than the sample state.
NOTE
EPRI recommends a blowdown velocity no greater than 125% the normal sampling
velocity.
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15
Sample Sentry® II
SPD 1.1.16 Rev 7
Sample: This flow rate is used during the Sample state. During this time, sample is allowed to
flow to analyzers.
Shutdown: This flow rate setting is used to determine when the system should shut down.
When the total flow is less than this set point and the PRV is full open, the system will shut
down.
NOTE
If the desire is for the system to never shut down, set the Shutdown flow rate to 0 cc/min,
and disable the Shutdown pressure setpoint.
Blowdown Time
B l o w d o w n
T i m e
h h : m m : s s
0 : 4 5 : 0 0
Figure 14 – Blowdown Time
Figure 14 shows the blowdown time setup screen. This setting controls the duration the system
stays in blowdown after startup. To change the second’s field, use the ▲ and ▼ keys. To
change the minutes field, hold the ENTER key while using the ▲ and ▼ keys. To change the
hour’s field, hold the MENU key while using the ▲ and ▼ keys. To return to the setup screen,
press the ESC key.
NOTE
To disable blowdown, set the blowdown time to 0:00:00.
Continued Setup
S e t u p
C o n t i n u e d
P r e s s u r e
P R V
T y p e
C l e a n
M o r e
►S t a r t u p
Figure 15 – Continued Setup
Figure 15 shows the continued setup screen. The cursor indicates the option you wish to
choose. Move the cursor using the ▲ and ▼ keys. Select the option using the ENTER key. To
exit this screen and return to the setup screen, press the ESC key.
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16
Sample Sentry® II
SPD 1.1.16 Rev 7
Pressures
S t a r t u p
P r e s s u r e
9 0 0
P S I
Figure 16 – Startup Pressure
Figure 16 shows the pressures screen. To adjust the set-point, use the ▲ and ▼ keys. Holding
the MENU key while using the ▲ and ▼ keys changes the set-point in increments of 100. When
finished changing the displayed set point, press the ENTER key to display the next set point.
After setting the last pressure, pressing ENTER will return to the setup screen. The following
pressures can be programmed:
Startup: The first set point displayed is the startup pressure. This inlet pressure set point is used
to determine when Sample Sentry®II should startup.
Shutdown: This pressure setting is used to determine when the system should shut down.
When the pressure is less than this set point, the system will shut down. To disable automatic
shutdown on low pressure, reduce the shutdown pressure until it reads “Disabled.”
NOTE
Ensure that there is sufficient pressure differential between the startup pressure set point
and shutdown pressure setpoint so that the Sample Sentry®II does not enter a
continuous loop senario. (ie. Startup pressure must always be suffieciently higher than
Shutdown pressure to account for pressure drops during startups.
PRV Type
P R V
T y p e
V R E L
Figure 17 – PRV Type
Figure 17 shows the PRV selection screen. To toggle the PRV selection between the VREL®
and Needle valve, use the ▲ or ▼ key. To return to the continued setup screen, use the ESC
key.
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17
Sample Sentry® II
SPD 1.1.16 Rev 7
Clean
A u t o
C l e a n
F r e q u e n c y
d d : h h : m m
0 : 0 0 : 0 0
Figure 18 – VREL® Cleaning Frequency
Figure 18 shows the Auto Cleaning Frequency screen. This screen sets the frequency between
auto cleaning cycles for the VREL®. When auto clean is enabled the controller periodically
actuates the VREL® to prevent plugging. To change the minutes field, use the ▲ and ▼ keys.
To change the hours field, hold the ENTER key while using the ▲ and ▼ keys. To change the
day’s field, hold the MENU key while using the ▲ and ▼ keys. To return to the continued setup
screen, use the ESC key.
NOTE
To disable auto cleaning, set the frequency to 0:00:00.
Continued Setup (Screen 2)
S
►A l
U n
O p
e
a
i
t
t
r
t
i
u p
C o n t i n u e d
m s
M O D B U S
s
P I D
o n s
H o m e
Figure 19 – Continued Setup (Screen 2)
Figure 19 shows the second continued setup screen. The cursor indicates the option you wish
to choose. Move the cursor using the ▲ and ▼ keys. Select the option using the ENTER key.
To exit this screen and return to the previous screen, press the ESC key.
Alarm Setup
O u t
A l a r m
S e t u p
l e t
T e m p e r a t u r e
1 2 0
F
Figure 20 – Alarm Setup
Figure 20 shows the alarm setup screen. Use the ▲ and ▼ keys to change the alarm threshold.
Use the ENTER key to advance to the next alarm point. After all alarm levels are set, the
screen automatically returns to the continued setup screen (screen 2). The following alarm
conditions can be set:
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18
Sample Sentry® II
SPD 1.1.16 Rev 7
Outlet Temperature: High temperature alarm for the sample temperature to analyzers. A high
outlet temperature will trigger a shutdown and set the common alarm relay.
Low Flow: Alerts operators the total flow is below the alarm threshold. The common alarm
relay is set.
Low Flow Hysteresis: This set point determines when the low flow alarm clears. The system
will remain in low flow alarm until the total flow rises above the low alarm level plus the alarm
hysteresis.
Low Pressure: Alerts operators the pressure is below the alarm threshold. The common alarm
relay is set.
Low Pressure Hysteresis: This set point determines when the Pressure alarm clears. The
system will remain in low-pressure alarm until the pressure rises above the low alarm level plus
the alarm hysteresis.
Units
U n i t s
S e t u p
E n g l i s h
Figure 21 – Units
Figure 21 shows the unit selection screen. To toggle the displayed units between English and
SI, use the ▲ and ▼ keys. To return to the previous screen, use the ENTER key.
Options
M e a s u r e m e n t
O p t i o n s
I n l e t
P r e s s u r e
E n a b l e d
Figure 22 – Measurement Options
Figure 22 shows the measurement options screen. This screen is used to enable or disable
optional measurement options. To enable or disable the displayed option, use the ▲ or ▼ key.
To advance to the next measurement option, use the ENTER key. After all options have been
set, the screen will return to the continued setup screen (screen 2). Available options are: Inlet
Pressure and Temperature, Outlet Pressure and Temperature, and Cooling Water Temperature.
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19
Sample Sentry® II
SPD 1.1.16 Rev 7
MODBUS®
M O D B U S
►A d d r e s s
B A U D
S e t u p
1
9 6 0 0
b p s
Figure 23 – MODBUS® Setup
Figure 23 shows the MODBUS® setup screen. This screen allows the MODBUS® address and
BAUD rate to be changed. For further information on using the MODBUS® feature, please refer
to Appendix A.
PID
P I D
S e t u p
P a s s w o r d
0 0 0 0
Figure 24 – PID Setup
Figure 24 shows the PID setup screen. The PID parameters should only be changed with the
assistance of Sentry Equipment Corp. For this reason, PID parameters are password protected.
If the system needs tuning, please contact Sentry Equipment Corp. for assistance.
Home
M a n u a l
H o m e
E n c o d e r Z
=
0
E n t e r
t o
s e t
H o m e
Figure 25 – Manual Home
Figure 25 shows the set home screen. . The Manual Home feature should only be changed with
the assistance of Sentry Equipment Corp. For this reason, the Manual Home feature is
password protected. If the system needs tuning, please contact Sentry Equipment Corp. for
assistance. This screen is used to manually tune the PRV and motor. To move the PRV, use
the ▲ and ▼ keys. After the PRV is in the home position, press the ENTER key to reset the
encoder count. To return to the previous screen, press the ESC button.
NOTE: Improper use of the Manual Home feature will damage the unit, call Sentry Equipment
Corp to receive instructions on how use this feature. Manual homing of the PRV by the customer
is rarely needed. The Sample Sentry®II is designed to auto-home upon a restart of the system.
Typically, cycling power will properly correct any PRV’s that have their home location set
incorrectly.
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20
Sample Sentry® II
SPD 1.1.16 Rev 7
Resetting Alarms
Motor Alarm
A Motor alarm will occur when the torque required to move the PRV is greater than the
maximum torque the motor is capable of supplying. Typically, a motor alarms occurs because
debris becomes lodged in the PRV, or the PRV’s home position was set incorrectly. Follow the
below procedure to dislodge or clean any debris from the VREL.
Applying excessive torque on the PRV Shaft or PRV coupling will result in damage to the unit.
Follow the appropriate procedure when dislodging PRV.
1) Close the sample inlet isolation valve on the SSII
2) Remove power from the SSII.
3) Remove VREL and clean debris from VREL
4) Verify VREL shaft opens and closes freely with little resistance
5) Replace VREL (replacing VREL near the fully closed position will reduce startup time)
6) Apply power to the SSII
Wait for SSII unit to finish it’s startup routine (date screen will no longer be shown)
INSTALLATION
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21
Sample Sentry® II
SPD 1.1.16 Rev 7
This instrument should be installed by qualified technical personnel to ensure adherence to all
applicable electrical codes.
AVERTISSEMENT
Cet instrument doit être installé par un technicien certifié afin d’assurer que toutes les normes au
code électrique sont respectées.
To ensure the protection provided by this equipment is not impaired, this equipment must not be
installed or used in any manner other than that which is specified in this manual.
AVERTISSEMENT
Afin de s’assurer que la protection prévue par cette pièce d’équipement n’est pas défaillante, cet
équipement ne doit pas être installé ou utilisé de manière autre que spécifié dans le manuel.
Unpacking
®
After carefully removing the Sample Sentry II from its shipping carton, inspect it for any damage. Report
damages to the shipper immediately.
Mounting
Bolt the units to the wall using four 3/8" bolts. To simplify installation, first mount the unistrut to
the wall and then mount the single line to the unistrut.
Connections
Refer to Figure 26 for connection locations.
1. Connect cooling water inlet 3 and outlet 4 connections on primary cooler. (Secondary
cooler optional – Inlet 5 , Outlet 6 )
2. Connect the inlet sample line 1 and outlet sample line 2 .
3. Connect optional sink drain 7 .
4. Connect air inlet 8 .
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22
Sample Sentry® II
SPD 1.1.16 Rev 7
Figure 26 – General Arrangement (High Pressure Model)
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23
Sample Sentry® II
SPD 1.1.16 Rev 7
Electrical Connections
Electrical Shock Hazard – All input and output wiring should be installed in such a
manner that access to bare copper is prohibited during normal operation.
AVERTISSEMENT
Avertissement de choc électrique- Tout le filage devra être installé de manière à éviter
que toute partie de fil soit dénudé (sur le cuivre) durant l’utilisation normale
An access hole sized for ½” NPT (15 mm) electrical conduit fitting is provided on the bottom of
the enclosure. A sealing type conduit fitting is required to maintain the enclosure’s rating.
Power Connection
The Sample Sentry®II contains two circuit boards stacked in the enclosure. The power
connection is located on the output board, the bottom board in the circuit board stack.
The Sample Sentry®II contains a universal power supply. The power supply is capable of
accepting an input voltage range of 100-240 VAC and frequency of 50 or 60 Hz. The Sample
Sentry®II will automatically operate with power supplied in this range. A power supply lead of 16
AWG (1.3 mm2) copper wire is recommended.
It is recommended the Sample Sentry®II be connected to an electrical outlet or outlet strip with
surge suppression and filtering. A suitable external over-current protection device such as a fuse
or circuit breaker (15 A) is recommended for both the hot (L) and neutral (N) leads. Using this
method, the plug will serve as the disconnect device. The cord and plug shall comply with the
following standards:
Location
Cord
Plug
United States
ANSI/UL 817
ANSI/UL 498
Canada
CSA C22.2 No. 21 or C22.2 No. 49 CSA C22.2 No. 21 and C22.2 No. 42
European Community IEC 60227 or 60245
Appropriate IEC standard
Table 2 – Power Cord Requirements
If desired, the Sample Sentry®II may also be hard wired to instrument-quality power using
appropriate certified conduit, fittings, and wiring. A suitable external over-current protection
device, such as a fuse or circuit breaker (15 A), and disconnect device is recommended. The
over-current protection and disconnect devices shall be installed on both the hot (L) and neutral
(N) leads. The disconnect device shall be located near the equipment and marked with
appropriate ON(1) OFF(O) markings as specified by local codes. For fixed wiring methods, the
ground conductor shall have green with a yellow stripe as the insulation. Installation should be
performed by qualified personnel in accordance with local codes and procedures.
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24
Sample Sentry® II
SPD 1.1.16 Rev 7
Startup
1. Ensure the inlet isolation valve is closed.
2. Initiate cooling water flow through the sample cooler by fully opening the inlet valve (V-4)
and outlet valve (V-5). Verify that minimum required cooling water flow is occurring. If
cooling water is untreated, its temperature rise should not exceed 30°F (17°C) in order to
minimize scaling. Be sure that the outlet temperature does not exceed 140°F (60°C).
When necessary, throttle cooling water flow by partially closing the globe valve on the
cooling water outlet line. Any valve on the cooling water inlet line shall always be fully
open.
3. Introduce power to the panel before sample flow is initiated. Allow the controller to finish
the startup routine. The controller will enter the manual mode and the Operation screen
will be displayed after the startup routine is complete.
4. Setup the necessary control parameters in the controller including flow rates, startup
pressure and blowdown time. Return the controller to the operation screen.
5. Open the inlet isolation valve to introduce sample. If equipped with an inlet pressure
transducer, the controller will begin to display the inlet pressure.
6. Place the controller in Auto mode.
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25
Sample Sentry® II
SPD 1.1.16 Rev 7
MAINTENANCE
Sample Cooler
Coolers require an occasional descaling of the shell side. This can be done chemically or
mechanically. The frequency of this cleaning depends on the hardness level and the outlet
temperature of the cooling water. When the difference between the cooling water inlet temperature
and sample outlet temperature becomes excessive, it is time to descale the cooler. If the cooler is
used in continuous steam service, demineralized cooling water may be required to avoid frequent
descaling.
Disassembly & Reassembly
1. For heavily scaled coolers, disassembly is made easier by first dissolving the scale.
Remove scale by circulating an inhibited sulfamic acid cleaning solution through the
cooling water side.
2. Replace used gaskets with new ones. After reassembly, pressurize shell and visually
inspect for water leaks. Replace gaskets that show visible leaks. Keep spare shell
gaskets on hand for this need.
3. During reassembly, tighten the bolts only enough so that shell side leaking does not
occur. Over tightening ma y cause gasket failure.
VREL®/Needle Valve
Applying excessive torque on the PRV Shaft or PRV coupling will result in damage to the unit.
Follow the appropriate procedure when dislodging PRV.
In the event of a blockage, it can normally be cleared by fully opening the valve. Care must be
taken to ensure that temperature and pressure limits are not exceeded during this process. Do not
apply excessive torque to PRV shaft or PRV coupling. If the PRV cannot be fully open by hand or
by using the motor, then it may be necessary to remove the PRV and manually clean the debris
from the PRV. To manually clean the VREL follow the procedure below:
7) Close the sample inlet isolation valve on the SSII
8) Remove power from the SSII.
9) Remove VREL and clean debris from VREL
10) Verify VREL shaft opens and closes freely with little resistance
11) Replace VREL (replacing VREL near the fully closed position will reduce startup time)
12) Apply power to the SSII
13) Wait for SSII unit to finish it’s startup routine (date screen will no longer be shown)
14) Open sample inlet isolation valve on the SSII
If the VREL® seal develops a leak, the seal requires replacement. A VREL® seal kit is available.
Refer to the Spare Parts List of this manual for further information.
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26
Sample Sentry® II
SPD 1.1.16 Rev 7
Inlet Isolation Valve
Occasionally during initial start-up or restart of the sample panel, the inlet isolation valve packing
will leak. If this occurs, remove the handle, tighten the packing nut and replace the handle. If
the packing continues to leak, the packing may need to be replaced. Refer to the Spare Parts
List of this manual for further information.
Backpressure Regulating/Relief Valve
The only serviceable part of the BPR/RV is the diaphragm. Detailed instructions are included
with the replacement diaphragm. Refer to the Spare Parts List of this manual for ordering
information. No pressure adjustment is available.
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27
Sample Sentry® II
SPD 1.1.16 Rev 7
Controller
Fuses
Potential Fire Hazard – Replace fuses only with the same fuse type and ratings.
AVERTISSEMENT
Risque potentiel d’incendie – Ne remplacer les fusibles qu’avec des fusibles totalement
identiques
The two circuit boards in the Sample Sentry®II contain fuses to protect personnel, wiring and the
electronics from excessive current draw. Each fuse requires a different trip rating. Individual
fuse ratings can be found in the Spare Parts List included in this manual.
The power supply uses a 4 A fast acting fuse rated for 250 V.
Replacement fuses for the power supply and circuit boards are available from Sentry. Refer to
the Spare Parts List of this manual for further information. Refer to the disassembly procedure
for instructions on replacing user replaceable parts such as fuses.
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28
Sample Sentry® II
SPD 1.1.16 Rev 7
Disassembly
Electrical Shock Hazard – Disconnect all power, including voltages connected to relays, before
servicing or replacing fuses.
AVERTISSEMENT
Risque potentiel choc électrique – Enlever la source d’alimentation incluant les sources de
voltage au relais avant tout entretien ou remplacement des fusibles.
Use the following steps to replace any user serviceable parts:
1. Remove the front cover of the enclosure by removing the four corner screws. Disconnect
the keypad extension cable from the CPU board.
2. Disconnect the interface cable and power supply cable from the CPU board. Remove the
CPU board by removing the four mounting screws.
3. Disconnect the power supply cables from the power supply. Remove the power supply
by removing the four mounting screws.
4. Replace desired part, such as fuse, circuit board or cable assembly.
5. Replace the power supply. Secure the board in place using the four mounting screws
removed in step 3. Replace the power supply cables.
6. Replace the CPU board. Secure the board in place using the four screws removed in
step 2. Replace the interface cable and power supply cable.
7. Replace the front cover. Attach the keypad extension cable to the CPU board. Secure
the front cover in place using the four screws located on the corners of the front cover.
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29
Sample Sentry® II
SPD 1.1.16 Rev 7
Analog Input Calibration
Note: The analog circuitry of the Sample Sentry®II is calibrated at Sentry prior to shipment. Recalibration should be performed by properly trained personnel. Refer to the following
procedures to calibrate the analog circuits of the Sample Sentry®II:
Tools Required: Calibrated milliamp supply, Calibrated voltage source
Calibration
1. Using the keypad, navigate to the Auto Calibration Screen by pressing the Menu button,
selecting Analog Inputs, entering the password (0202) then Auto Calibration. (holding the
menu key while pressing the up and down arrows to adjust value by 100) (Select
appropriate setting by using the up and down arrows to indicate which setting you wish to
select, then press the Enter button make your selection)
2. A screen displaying which channel you wish to calibrate should now be shown. Use the
up and down arrow to make your selection on which channel you wish to calibrate. The
channels available to calibrate are referenced in Figure 1.
Figure 27 – Channel Configuration on SSII CPU Board
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30
Sample Sentry® II
SPD 1.1.16 Rev 7
3. Calibrate each channel per Table 3 and instructions below.
Channel #
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Range
4-20 mA
4-20 mA
4-20 mA
0-2.5 V
0-2.5 V
0-2.5 V
Input
P&ID Ref
Flow
FT-1
Outlet Pressure
PT-2
Inlet Pressure
PT-1
Inlet Temp
TE-2
OutletTemp
TE-1
Cooling Temp
TE-3
Table 3 – Channel Calbration Reference
4. For calibration of channels 1-3 connect a calibrated milliamp supply to TB1 terminals of
the CPU board marked + and – for the appropriate channel. Input 4 mA. Press the
Enter key.
5. The controller is done calibrating the 4 mA when the Offset value stops adjusting and the
input value on the screen changes from 4 mA to 20 mA. Input 20 mA for selected
channel. Press the Enter key.
6. The controller is done calibrating the 20 mA when the Gain value stops adjusting. Press
the Enter screen to go to the channel selection screen.
7. Repeat steps 4-6 for remaining channels requiring 4-20 mA calibration.
8. For calibration of channels 4-6 connect a calibrated voltage supply to TB1 terminals of the
CPU board marked T1-T3 and COM for the appropriate channel.
9. Set the voltage source to read 0 V. Verify voltage source using a digital multimeter. Input
0 V. Press the Enter key to begin calibrating.
10. The controller is done calibrating the 0 V when the Offset value stops adjusting and the
input value on the screen changes from 0 V to 2.5 V. Input 2.5 V for selected channel.
Press the Enter key.
11. The controller is done calibrating the 2.5 V when the Gain value stops adjusting. Remove
voltage from channel. Press the Enter screen to go to the channel selection screen.
12. Repeat steps 8-11 for remaining channels requiring 0-2.5 V calibrations.
13. After calibration of all channels has been completed, use the ESC key to return to the
Operation Screen.
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31
Sample Sentry® II
SPD 1.1.16 Rev 7
Factory Settings –
The settings below are factory settings for Sample Sentry®II units. These values are adjustable and can
be changed according to customer requirements.
Factory Settings for the SSII
High Pressure Low Pressure
1250 cc/min 1250 cc/min
1000 cc/min 1000 cc/min
0 cc/min
0 cc/min
Flowrates
Blowdown
Sample
Shutdown
1 minute
1 minute
Startup
Shutdown
1000 PSI
500 PSI
100
25
Auto clean
0 minutes
0 minutes
120 F
0 cc/min
100 cc/min
0 PSI
100 PSI
120 F
0 cc/min
100 cc/min
0 PSI
100 PSI
English
English
Blowdown Time
Pressures
Alarms
Outlet Temp
Low Flow
Low Flow Hysteresis
Low Pressure
Low Pressure Hysteresis
Unit Setup
Scale
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
0-3393 cc/min 0-3393 cc/min
0-50 PSI
0-50 PSI
0-3000 PSI
0-3000 PSI
0-250 F
0-250 F
0-250 F
0-250 F
0-250 F
0-250 F
Table 4 – Factory Settings
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32
Sample Sentry® II
SPD 1.1.16 Rev 7
TROUBLESHOOTING GUIDE
Applying excessive torque on the PRV Shaft or PRV coupling will result in damage to the unit.
Follow the appropriate procedure when dislodging PRV.
Symptom
Possible Problem(s)
Remedy
Elevated Sample Temp.
- Loss of cooling water flow
- Increase in cooling water
inlet temp.
- Scaled cooler
- Increased sample flow
- Check cooling water supply
- Reduce cooling water temp or increase flow
Reduced Sample Flow
- Plugged line
- BPR/RV failure
- Blowdown line and exercise flow control valve
- See leaking BPR/RV
Leaking Valve Stems
- Loose or worn packing
- Tighten packing nut or replace packing
Leaking Cooler
- Loose housing from
thermal shock or worn
gasket
- Tighten bolts on head assembly or replace gasket if
cut or worn
Leaking BPR/RV
- Diaphragm failure
- Replace diaphragm
Motor Alarm
- Maximum motor torque
exceeded (typically debris
in PRV)
- In most cases, cycling power will clear this alarm. If
the alarm continues to appear, you may need to
remove the PRV and manually clean it.
PRV shaft will not turn
- Debris in PRV
- PRV Position Incorrect
- If possible, attempt to dislodge debris by using your
hand to torque the PRV coupling. If this fails, close
sample isolation valve, remove power from SSII,
remove PRV and clean debris from PRV. Replace
PRV, supply power to SSII, wait for unit to finish its
startup routine, and open sample isolation valve.
- Chemically clean (see cooler maintenance)
- Adjust sample flow rate
Table 5 – Troubleshooting Guide
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
33
Sample Sentry® II
SPD 1.1.16 Rev 7
FACTORY ASSISTANCE
Sentry Equipment Corp has been in the forefront of steam and water sampling equipment technology for
over 70 years. Sentry has always been recognized as the market leader in new sampling technology and in
exceptional customer support.
Please, do not return any equipment before discussing your application problem with a Sentry
representative and obtaining a Return Authorization.
Sentry Equipment Corp has a complete staff of trained Service Department associates to assist customers
with any problems. Call Sentry at 262/567-7256 (Fax: 262/567-4523) to request a service representative.
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
34
Sample Sentry® II
SPD 1.1.16 Rev 7
SPARE PARTS LIST
ID
BPR/RV
FE/FT-1
M
PT-1
SC-1, SC-2
SV-1
SV-2
TE-1, TE-2
TE-3
V-2
V-1
V-4
V-5
®
VREL
SG
Description
Sentry Backpressure Regulator/Relief Valve (20 PSI)
Replacement Diaphragm
Flow Sensor
Motor
®
VREL – Motor Coupling
Needle Valve – Motor Coupling
Pressure Transducer (0-3000 PSI)
Cable, 3 wire Packard connection
Sample Cooler, TLF-4225
Gasket for TLF-4225
Sample Cooler, FLF-6225
Gasket for FLF-6225
Solenoid Valve (Pilot Valve for Actuator)
Solenoid Valve, Analyzer Shutoff
Temperature Elements
Sentry P/N
7-00868A
6-02439A
4-05686B
4-04761E
6-04641A
4-04762B
4-05060K
4-05060G
7-00686A
2-03800B
7-00757A
2-03800A
4-05687A
4-05687B
2-04281E
Sample Inlet Isolation/ Blowdown Valves
¼” Compression Low Temperature/Low Pressure
Packing for above
¼” Compression High Temperature/High Pressure
Packing for above
3/8” Compression Low Temperature/Low Pressure
Packing for above
3/8” Compression High Temperature/High Pressure
Packing for above
Sample Shutoff Valve (Actuator and Valve)
Cooling Water Inlet Valve (3-way), Bronze
Cooling Water Inlet Valve (3-way), Stainless
Cooling Water Outlet Valve (Globe), Bronze
Cooling Water Outlet Valve (Globe), Stainless
Sentry High Pressure Control Valve
Seal Kit
Needle Valve – High Cv
Needle Valve – Low Cv
Cooling Water Sight Glass, Bronze
Cooling Water Sight Glass, Stainless
4-04002D
4-05054D
4-04002U
4-00350D
4-04002V
4-04002Z
4-03858X
4-03614D
4-01580Q
4-01139G
4-00920D
4-00787B
4-04855B
7-00744A
6-02302C
4-04791B
4-04791A
4-04557T
4-04557X
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
35
Sample Sentry® II
ID
F1
F1
F2
F3
F4
Controller and Components
Description
Controller
CPU Board Fuse, 1.0 A 250 V Fast Acting
Output Board Fuse, 4.0 A 250 V Fast Acting
Output Board Fuse, 0.63 A 250 V Fast Acting
Output Board Fuse, 0.25 A 250 V Fast Acting
Output Board Fuse, 2.0 A 250 V Fast Acting
Power Supply Fuse, 4.0 A 250 V Fast Acting
CPU Board
Output Board
Display Board
Power Supply
SPD 1.1.16 Rev 7
Sentry P/N
6-04120H
4-05630B
4-05630C
4-05630D
4-05630E
4-05630A
4-02055F
6-03912D
6-03912E
2-05578J
4-05590C
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
36
Sample Sentry® II
SPD 1.1.16 Rev 7
WARRANTY
Seller warrants products manufactured by it and supplied hereunder to be free from defects in materials
and workmanship for a period of twelve months from date of shipment. If within such period any such
products shall be proved to Seller’s satisfaction to be defective, such products shall be repaired or
replaced at Seller’s option. Seller’s obligation and Buyer’s exclusive remedy hereunder shall be limited to
such repair and replacement and shall be conditioned upon Seller’s receiving written notice of any
alleged defect within 10 days after its discovery and, at Seller’s option, return of such product to Seller,
ex-works Sentry’s factory.
The foregoing warranties are exclusive and in lieu of all other express and implied warranties except in title,
including but not limited to implied warranties of merchantability and fitness for purpose. Seller shall not be
subject to any other obligations or liabilities whatsoever with respect to products manufactured or furnished
by it, or any undertakings, acts or omissions relating thereto.
Warranty Conditions & Limitations
This Warranty shall not apply to any Sentry product which, in the opinion of Sentry Equipment Corp, has
been (a) altered or repaired in a manner affecting the efficiency of performance of the unit or (b)
incorrectly installed or operated or (c) damaged in shipment or (d) damaged by flood or fire or (e) if the
serial number is missing, altered or defaced.
The owner shall be responsible for maintenance of his equipment. Wear or damage caused by lack of
normal maintenance or by misuse of the equipment shall not be considered as defective workmanship
and material.
Sentry reserves the right to make product design changes or improvements without notice and without
imposing any obligation upon itself to install these changes or improvements on its products previously
manufactured.
This warranty is for the sole benefit of the original purchaser and is not transferable unless agreed to in
writing by Sentry Equipment Corp.
Receiving Shipments (including loss or damage by transportation)
It is the customer’s responsibility to check for missing cartons and sign of damage to cartons. If found,
customer should note missing and/or damaged cartons on the delivery receipt and have delivery receipt
signed by the representative of the transportation company. If unpacking discloses concealed damage
from rough handling, the customer should request a concealed damage inspection from the
transportation company.
The Sentry Customer Service Department will aid your organization in any claim proceeding for shortages
or damages in shipment, but it is the receiver’s responsibility to file claim with the carrier for damage or loss.
Customer Actions for Claims on Products During the Warranty Period
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
37
Sample Sentry® II
SPD 1.1.16 Rev 7
1. Contact the Customer Service Department, Sentry Equipment Corp., Oconomowoc, WI,
Telephone: 262-567-7256, to obtain a Return Material Authorization (RMA) number.
2. You will be sent an “RMA” and a “Decontamination Statement” that is required to be filled out
and returned with the equipment.
3. The following information must appear on the outside of the package:
a.
RMA number marked on outside of box.
b.
Decontamination Statement filled out and attached to outside of box.
4. Return defective equipment FREIGHT PREPAID. Collect shipments will be refused.
5. The factory will not process warranty claims until the customer has properly accomplished the
above items.
6. The Sentry factory may accept the entire claim, a part of the claim or none of the claim if our
inspection of returned parts proves the failure was for reasons other than defective material or
factory workmanship.
Important Notes:
1. Sentry will not be responsible for damage incurred during the return shipment.
2. All returns subject to inspection and a $50.00 evaluation fee.
3. This RMA is not authorization for credit. Credits and/or replacements will be issued upon
evaluation of returned goods.
4. RMA is valid for thirty (30) days from issue date.
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
38
Sample Sentry® II
SPD 1.1.16 Rev 7
APPENDIX A - MODBUS®
Multiple Sample Sentry® II controllers can communicate with a PC or control system via
MODBUS® over a half duplex (2-wire), RS-485 network.
Figure 27 shows the MODBUS® setup screen on the Sample Sentry®II.
M O D B U S
S e t u p
►A d d r e s s
1
B A U D
9 6 0 0
b p s
Figure 28 – MODBUS® Setup
Each device on the network must be assigned a unique address. The address for each Sample
Sentry®II can be in the range of 1 to 247. Use the ▲ and ▼ keys to change the address setting.
Use the ENTER key to toggle between the address setting and the BAUD setting.
The controller is capable of operating using a BAUD rate of 19.2 kbps or 9600 bps. To change
the BAUD rate use the ▲ and ▼ keys.
The communications port uses 8 data bits, 1 stop bit, and no parity. The MODBUS® mode is
RTU. These parameters cannot be changed.
The complete listing of MODBUS® registers are listed in Table 6.
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
39
Sample Sentry® II
SPD 1.1.16 Rev 7
Register
400001
400002
400003
400004
400005
400006
400007
400008
400009
400010
400011
400012
400013
400014
400015
400016
400017
400018
400019
400020
400021
®
Sample Sentry II Register
State
Flow rate
Inlet Pressure
Outlet Pressure
Inlet Temperature
Outlet Temperature
Cooling Out Temperature
Sample Shutoff Valve (V1)
Analyzer Valve (SV2)
PRV Valve (# turns open)
Elapsed Blowdown (seconds)
Sample Flow rate Set-point
Blowdown Flow-rate Set-point
Blowdown Duration Set-point
(seconds)
Startup Pressure
Remote Start
Remote Stop/Permissive Run
Shutdown Flow Rate
Remote Blowdown/Sample Control
Empty
Shutdown Pressure
R/W
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read Only
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Read/Write
Table 6 – MODBUS® Registers
ADDITIONAL NOTES:
State (400001)
0 = Manual
1 = Closing Valve
4 = Sample
5 = Stop
7 = Temperature Alarm
9 = Remote Blowdown
2 = Start
6 = Entering Manual
8 = Motor Alarm
10 = Remote Sample
3 = Blowdown
11-14 = Auto Clean
Remote Start (400016)
Momentarily place a 1 in this register to remotely place the system in Auto.
Remote Stop/Permissive Run (400017)
Momentarily place a 1 in this register to remotely place the system in Manual. Maintaining a 1 is this
register functions as a remote lockout.
Remote Blowdown/Sample Control (400019)
Use this register to control the mode of the Sample Sentry®II. A 0 in this register gives local control to the
system. Blowdown and Sample modes are initiated based on controller setup parameters. Placing a 1 in
this register places the system in Remote Blowdown. SV-2 remains closed preventing flow to online
analyzers. The system overrides the blowdown timer, remaining in the blowdown condition until this
register changes or the system is shutdown. Placing a 2 in this register places the system in Remote
Sample.
SENTRY EQUIPMENT CORP • 262.567.7256 • Fax: 262.567.4523 • sales@sentry-equip.com • www.sentry-equip. com
40