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Sierra Monitor Corporation SENTRY 5000 Applicability & effectivity Instruction Manual

Gas monitoring system - applicability & effectivity
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MODEL 5000
S E N T R Y
GAS MONITORING SYSTEM
Version 6
Sensors Service
APPLICABILITY & EFFECTIVITY
Effective for all Sentry systems manufactured after September 1, 1995.
Instruction Manual Part Number T12001-A1
Sierra Monitor Corporation
1991 Tarob Court, Milpitas, CA 95035
(408) 262-6611
Applicability & Effectivity

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Summary of Contents for Sierra Monitor Corporation SENTRY 5000 Applicability & effectivity

  • Page 1 S E N T R Y GAS MONITORING SYSTEM Version 6 Sensors Service APPLICABILITY & EFFECTIVITY Effective for all Sentry systems manufactured after September 1, 1995. Instruction Manual Part Number T12001-A1 Sierra Monitor Corporation 1991 Tarob Court, Milpitas, CA 95035 (408) 262-6611 Applicability & Effectivity...
  • Page 2 Sentry Instruction Manual - Version 6 COMBUSTIBLE GAS SENSOR MODULE (5100-02) 7.5.1 DESCRIPTION The Combustible Gas Module includes the sensor and electronic assembly installed in an explosion proof housing. The sensor screws into one hub of the enclosure and plugs into the bottom electronics card via a six pin connector.
  • Page 3 Sentry Instruction Manual - Version 6 3. Using a Sierra Monitor Model 1200-26 Gas FUNCTION WIRE COLOR Calibrator with a Sierra Monitor Model 5358- 00 calibration adapter, or Model 5360 Gas DETECTOR WHITE Delivery Fitting. Apply the calibration gas at a...

  • Page 4: Combustible Gas Scaling Factors

    Sentry Instruction Manual - Version 6 7.5.5 COMBUSTIBLE GAS SCALING FACTORS For combustible gas monitoring, a calibration standard of Methane or Propane my be used in conjunction with scaling factors to cause Sentry concentration display and alarm function in %LEL scale of another gas as follows:...
  • Page 5 Sentry Instruction Manual - Version 6 7.6 OXYGEN MODULE (5100-03) 7.6.1 DESCRIPTION The Oxygen Module includes the electronic assembly installed in an explosion proof housing and the electrochemical sensor connected to one hub of the enclosure. Cabling from the controller connects to a three pin spring loaded terminal strip.
  • Page 6 Sentry Instruction Manual - Version 6 Unscrew the old sensor from the conduit hub, screw in the new sensor and connect the wiring harness to the transmitter electronics. Replace the transmitter into the enclosure, make signal adjustments as described above, and replace the enclosure cover.
  • Page 7 Sentry Instruction Manual - Version 6 7.7 CARBON MONOXIDE MODULE (5100-04) 7.7.1 DESCRIPTION The Carbon Monoxide Module includes the sensor and electronic assembly installed in an explosion proof housing. The sensor screws into one hub of the enclosure and plugs into the bottom electronics card via a six pin connector.
  • Page 8 Sentry Instruction Manual - Version 6 If sensor replacement is necessary remove the electronics from the housing and unplug the old sensor from the bottom board, remove it from the enclosure hub and reverse the procedure to install the new sensor.
  • Page 9 Sentry Instruction Manual - Version 6 7.8 HYDROGEN SULFIDE MODULE (5100-05) 7.8.1 DESCRIPTION Model 5100-05 Hydrogen Sulfide Sensor Module includes a sensor assembly and electronic assembly installed in an explosion proof housing. The sensor assembly includes a reuseable housing and disposable electrochemical sensor.
  • Page 10 Sentry Instruction Manual - Version 6 1. Confirm that system power has been removed. 2. Remove the transmitter electronics board from the main housing and unplug the sensor harness from the transmitter electronics. 3. Unscrew the sensor housing from the bottom of the enclosure 4.
  • Page 11 Sentry Instruction Manual - Version 6 7.9 TOXIC GAS SENSOR MODULE 7.9.1 DESCRIPTION Toxic Gas Sensor Modules include the following models and default ranges: 5100-06 Chlorine -10 PPM 5100-07 Hydrogen - 2000 PPM 5100-12 Nitrogen Dioxide - 20 PPM...
  • Page 12 Sentry Instruction Manual - Version 6 message for toxic gas SENSOR FAILURE sensors does not indicate a specific failure of the sensor but indicates that the sensor is not correctly connected to the electronics. If this message...
  • Page 13 Sentry Instruction Manual - Version 6 7. Apply span gas. Adjust the gain potentiometer until TP10 = correct value as described above. To increase voltage at TP10 turn the gain potentiometer counter clockwise. 8. Remove system power and re-install the sensor and transmitter in the enclosure.
  • Page 14 Sentry Instruction Manual - Version 6 7.10 AMMONIA SENSOR MODULE (5100-25) 7.10.1 DESCRIPTION The Ammonia Sensor Module includes a sensor assembly and electronic assembly installed in an explosion proof housing. The sensor assembly includes a rechargeable electrochemical sensor. The assembly screws into...
  • Page 15 Sentry Instruction Manual - Version 6 message for ammonia sensors does SENSOR FAILURE not indicate a specific failure of the sensor but indicates that the sensor is not correctly connected to the electronics. If this message appears check that the sensor harness is correctly installed to the connector on the bottom electronics board.