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Sentry Equipment Corp

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 .

Table 5. Troubleshooting Guide

Symptom

Possible Problem(s)

Remedy

Elevated Sample

Temperature

Loss of cooling water flow

Increase in cooling water

inlet temperature

Scaled cooler

Increased sample flow

Check cooling water supply

Reduce cooling water

temperature or increase flow

Chemically clean (see cooler

maintenance)

Adjust sample flow rate

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

Locked PRV

Faulty motor encoder or

motor

Faulty output board inside

Sample Sentry II controller

Faulty power or signal

wiring between Sample

Sentry II controller and

motor

In most cases, you may need to

remove the PRV and manually

clean it. If Alarms continue

please contact the factory for

truobleshooting support.

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 Sample

Sentry II, remove PRV and clean

debris from PRV. Replace PRV,

supply power to Sample Sentry

II, wait for unit to finish its startup

routine, and open sample

isolation valve.

Содержание Sample Sentry II High Pressure

Страница 1: ...Original Instructions Installation Operation Maintenance Manual Sentry Sample Sentry II Sample Conditioning Automation S SW IOM 00269 20 05 21...

Страница 2: ...abilities and warranties express or implied including warranties of merchantability and fitness for a particular purpose for the accuracy currency completeness and or reliability of the information co...

Страница 3: ...ions DANGER indicates a hazardous situation which if not avoided will result in death or serious injury WARNING indicates a hazardous situation which if not avoided could result in death or serious in...

Страница 4: ...g with any chemical Read the product label and Safety Data Sheets SDS carefully and follow the instructions exactly Potential Equipment Hazards Hot surfaces This equipment may have very hot surfaces I...

Страница 5: ...Flow Rate 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 M...

Страница 6: ...m 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 va...

Страница 7: ...Sentry Sample Sentry II 7 Figure 1 Typical P ID of a Sample Sentry II System...

Страница 8: ...8 Sentry Equipment Corp Figure 2 P ID of a Sample Sentry II system with Secondary Cooling...

Страница 9: ...nt the system advances to the Blowdown state If Blowdown is not enabled the system goes to the Sample state When enabled the Blowdown state initiates a controlled blowdown sequence by opening V 1 and...

Страница 10: ...n 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 appears From an alarm screen press...

Страница 11: ...Sentry Sample Sentry II 11 Figure 3 Controller Front Panel...

Страница 12: ...Scale Sample Auto Calibra on Shutdown Manual Cal Blowdown Time Comp Error Offset Pressures Startup Pressure Flow Meter Cal Shutdown Pressure PRV Se ngs PRV Type Clean PRV Start Posi on PRV Recalibrate...

Страница 13: ...nd closed Holding the key opens the PRV while holding the key closes the PRV Start The controller waits in the Start state until the inlet pressure is greater than the programmed startup pressure The...

Страница 14: ...rm occurs valves SV1 SV2 and the VREL valve close The alarm condition cannot be reset until the outlet temperature falls below the high temperature alarm setpoint Pressing the Menu Reset button resets...

Страница 15: ...was in before Motor Diagnostics routine 3 If 15 seconds have elapsed and no motor movement has been detected the Sample Sentry II pulses the motor in the opposite direction for 15 seconds If motor mov...

Страница 16: ...he 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 Display Intensity Figure 8 Display Intensity D i s p l a y I n t...

Страница 17: ...I recommends a blowdown velocity no greater than 125 the normal sampling velocity Sample This flow rate is used during the Sample state During this time sample is allowed to flow to analyzers Shutdown...

Страница 18: ...s the ENTER key to display the next set point After setting the last pressure pressing ENTER returns the unit to the setup screen The following pressures can be programmed Startup The first set point...

Страница 19: ...position fully closed This can be set to higher if the sample line tends to have initial debris in the line that can clog the VREL valve or to reduce the time it takes for the sample to reach its set...

Страница 20: ...d 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 scre...

Страница 21: ...ystem remains in low pressure alarm until the pressure rises above the low alarm level plus the alarm hysteresis Units Figure 21 Units U n i t s S e t u p E n g l i s h Figure 21 shows the unit select...

Страница 22: ...e 24 shows the analog input menu screen This screen can be accessed by entering 202 for the Analog Input Setup Password The cursor indicates the option you wish to choose Move the cursor using the and...

Страница 23: ...n This instrument should be installed by qualified technical personnel to ensure adherence to all applicable electrical codes To ensure the protection provided by this equipment is not impaired this e...

Страница 24: ...24 Sentry Equipment Corp Figure 25 General Arrangement High Pressure Model...

Страница 25: ...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 serves as the disconnect devi...

Страница 26: ...26 Sentry Equipment Corp Figure 26 Electrical Wiring Diagram...

Страница 27: ...tion valve to introduce sample The controller begins to display the inlet pressure 6 Place the controller in Auto mode for automatic operation or control the system manually Maintenance Sample Cooler...

Страница 28: ...ces startup time a When the coupling is installed it is necessary to ensure proper spacing See procedure in maintenance section 6 Apply power to the Sample Sentry II 7 Wait for Sample Sentry II unit t...

Страница 29: ...ator assembly by removing the two tubing connectors and two Allen head retaining screws that hold the valve to the mounting bracket Flow Meter FE FT 1 If removal of the flow transmitter is needed spec...

Страница 30: ...ween the top and bottom of the coupling when pulling the VREL valve shaft up e Tighten the setscrews and install tighten the jam nuts Low Pressure Needle Valve coupling 1 Install the bronze half of th...

Страница 31: ...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...

Страница 32: ...ed 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 keyp...

Страница 33: ...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 4 The controller is done calibrating the 4...

Страница 34: ...ges from 0 V to 2 5 V Input 2 5 V for selected channel Press the Enter key 10 The controller is done calibrating the 2 5 V when the Gain value stops adjusting Remove voltage from channel Press the Ent...

Страница 35: ...n 0 cc min 1250 cc min 1000 cc min 0 cc min Blowdown Time 1 minute 1 minute Pressures Startup Shutdown 1000 PSI 500 PSI 100 25 Auto clean 8 hours 8 hours Alarms Outlet Temp Low Flow Low Flow Hysteresi...

Страница 36: ...t 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 M...

Страница 37: ...4281E V 2 Sample Inlet Isolation Blowdown Valves 1 4 Compression Low Temperature Low Pressure Packing for above 1 4 Compression High Temperature High Pressure Packing for above 3 8 Compression Low Tem...

Страница 38: ...H F1 CPU Board Fuse 1 0 A 250 V Fast Acting 4 05630B F1 Output Board Fuse 4 0 A 250 V Fast Acting 4 05630C F2 Output Board Fuse 0 63 A 250 V Fast Acting 4 05630D F3 Output Board Fuse 0 25 A 250 V Fast...

Страница 39: ...in the table below Product Line Product Category Warranty Period Sentry 1 Automatic Sampling 2 Corrosion Monitoring 3 Manual Sampling 4 Sample Conditioning 5 Sampling Analysis Systems 6 Replacement Pa...

Страница 40: ...nditioning sampling and measuring gas liquid slurry powder solids steam or water within their production environments our customers obtain the critical insights they need to control and optimize their...

Страница 41: ...mmunications port uses 8 data bits 1 stop bit and no parity The MODBUS mode is RTU These parameters cannot be changed Table 6 MODBUS Registers Register Sample Sentry II Register R W Format 30001 State...

Страница 42: ...r back to zero Remote Stop Permissive Run 40017 Momentarily place a 1 in this register to remotely place the system in Manual Maintaining a 1 in this register functions as a remote lockout To place a...

Страница 43: ...Sentry Sample Sentry II 43 This page is intentionally left blank...

Страница 44: ...44 Sentry Equipment Corp This page is intentionally left blank...

Страница 45: ...sentry equip com 966 Blue Ribbon Circle North Oconomowoc WI 53066 U S A 1 262 567 7256 support sentry equip com Serving customers in more than 50 countries across six continents worldwide...

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