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Sierra Monitor Corporation 5000 manual

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Table of contents for the manual

  • Page 1

    Sierra Monitor Corporation 1991 Tarob Court, Milpitas, CA 95035 (408) 262-6611 Applicability & Effectivity 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[...]

  • Page 2

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 69 7.5 COMBUSTIBLE GAS SENSOR MODULE (5100-02) 7.5.1 DESCRIPTION The Combustible Gas M odule includes the sensor and electronic assembl y installed in an explosion proof housing. The sensor screws into one hub of the enclosure and plugs into the bottom electronics ca[...]

  • Page 3

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 70 3. Using a Sierra Monitor M odel 1200-26 Gas Calibrator with a Si erra Monitor M odel 5358- 00 calibration adapter, or M odel 5360 Gas Delivery Fitting. Apply the calibratio n gas at a flow rate of 100 cc/min. until the signal out voltage stops changing (approx. 2[...]

  • Page 4

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 71 7.5.5 COMBUSTIBLE GAS SCALING FACTORS For combustible gas monitoring, a calibration standard of Me thane or Propane my be used in conjunct ion with scaling factors to cause Sentry concentra tion display and alarm function in % LEL scale of another gas as follows: [...]

  • Page 5

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 72 7.6 OXYGEN MODULE (5100-03) 7.6.1 DESCRIPTION The Oxygen Module includes the electronic assembly i nstalled in an explosion proof housi ng and the electrochemical sensor connected to one hub of the enclosure. Cabling from the controller connects to a three pin spr[...]

  • Page 6

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 73 Unscrew the old sensor from the conduit hub, screw in the new sensor and connect the wiring harness to the transmitter electronics. Repl ace the transm itter into the enclosure, make signal adjustm ents as described above, and replace the enclosure cover. After th[...]

  • Page 7

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 74 7.7 CARBON MONOXIDE MODULE (5100-04) 7.7.1 DESCRIPTION The Carbon Monoxide Module includes t he sensor and electronic assembly installed i n an explosion proof housing. The sensor screws into one hub of the enclosure and plugs into the bottom electronics card via [...]

  • Page 8

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 75 If sensor replacement is necessa ry remove the electronics from the housing and unplug the old sensor from the bottom board, rem ove it from the enclosure hub and reverse the procedure to install the new sensor. After the sensor is installed: • Allow one hour of[...]

  • Page 9

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 76 7.8 HYDROGEN SULFIDE MODULE (5100-05) 7.8.1 DESCRIPTION Model 5100-05 Hydrogen Sulfide Sensor Module includes a sensor assembly and elect ronic assembly i nstalled in an explosion proof housi ng. The sensor assembly includes a reuseable housing and disposable elec[...]

  • Page 10

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 77 1. Confirm that sy stem power has been removed. 2. Remove the transmitter electronics board from the ma in housing and unplug the sensor harness from the transmitter electronics. 3. Unscrew the sensor housing from the bottom of the enclosure 4. Hold the senso r as[...]

  • Page 11

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 78 7.9 TOXIC GAS SENSOR MODULE 7.9.1 DESCRIPTION Toxic Gas Sensor Modules include t he following models and default ranges: 5100-06 Chlorine -10 PPM 5100-07 Hydrogen - 2000 PPM 5100-12 Nitrogen Dioxide - 20 PPM 5100-13 Carbon Monoxide, High R ange - 1,000 PPM 5100-10[...]

  • Page 12

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 79 The SENSOR FAILURE message for toxic gas sensors does not indicate a specific fail ure of the sensor but indicates that the sensor is not correctl y connected to the electronics. If this message appears check that the sens or harness is correctly installed to the [...]

  • Page 13

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 80 7. Apply span gas. Adjust the gain potenti ometer until TP10 = correct value as described above. To increase voltage at TP10 turn the gain potentiome ter counter clockwise. 8. Remove system power and re-install the sensor and transmitter in th e enclosure. Restore[...]

  • Page 14

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 81 7.10 AMMONIA SENSOR MODULE (5100-25) 7.10.1 DESCRIPTION The Amm onia 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 i[...]

  • Page 15

    SMC sierra monitor corporation Sentry Instruction Manual - Version 6 SERVICE Page: 82 The SENSOR FAILURE message for am monia sensors does not indicate a specific failure of the sensor but indicates that the sensor is not co rrectly connected to the electronics. If this message a ppears check that the sensor harness is correctly installed to the co[...]