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Sierra Monitor Corporation 2-Wire Series Instruction Manual

2-wire series toxic gas sensor module
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MODEL 4501-XX
2-Wire Series

TOXIC GAS SENSOR MODULE

APPLICABILITY & EFFECTIVITY
Effective for all Model 4501-XX Modules manufactured after September 1, 2006.
4501-03 FM Pending
4501-04 FM Pending
4501-05 FM Approved
4501-06 FM Pending
4501-08
4501-10
4501-12
4501-25
4501-26
Instruction Manual Part Number T13022
Rev. B

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Summary of Contents for Sierra Monitor Corporation 2-Wire Series

  • Page 1: Toxic Gas Sensor Module

    MODEL 4501-XX 2-Wire Series TOXIC GAS SENSOR MODULE APPLICABILITY & EFFECTIVITY Effective for all Model 4501-XX Modules manufactured after September 1, 2006. 4501-03 FM Pending 4501-04 FM Pending 4501-05 FM Approved 4501-06 FM Pending 4501-08 4501-10 4501-12 4501-25 4501-26 Instruction Manual Part Number T13022...
  • Page 2 FM PERFORMANCE APPROVAL ONLY THE FOLLOWING ITEMS, FUNCTIONS AND OPTIONS ARE FM* APPROVED Model 4501-05 Hydrogen Sulfide Gas Sensor Module Sensor Module Model 4501-05 Calibration Equipment Model 1250-01 Model 1260-05 Model 1260-45 Model 5358-01 Notes: Apparatus must be installed in accordance with National Electrical Code. FM Comments.

  • Page 3: Table Of Contents

    PRODUCT DESCRIPTION ... 1 GENERAL ... 1 MOUNTING CONFIGURATION ... 1 THEORY OF OPERATION ... 1 MECHANICAL ... 2 INTERCONNECT WIRING ... 2 POWER REQUIREMENTS ... 2 CAUTIONS & WARNINGS ... 4 INTRODUCTION ... 4 GAS SENSOR MODULES - GENERAL ... 4 WIRING ...
  • Page 4 APPENDICES ... 19 APPENDIX A: SPECIFICATIONS... 19 APPENDIX B: MODEL NUMBERS & PARTS LIST ... 22 APPENDIX C: LIMITED WARRANTY ... 24 APPENDIX D: 4501-25/26 GAS SENSOR MODULE ... 25 APPENDIX E: US FM APPROVAL ... 29 APPENDIX F: CANADIAN FM APPROVAL ... 30 1-1: MODEL 4501-XX-AL HYDROGEN SULFIDE GAS SENSOR MODULE …………………………………..……...

  • Page 5: Product Description

    1.1 GENERAL The Model 4501-XX Toxic Gas Sensor Module is a 2-wire transmitter with 4-20 mA output and it offers a broad array of features including:  2-wire loop powered  180 day calibration interval  Selectable ranges (if appropriate for gas type) ...

  • Page 6: Mechanical

    Sierra Monitor electrochemical sensors provide improved reliability by allowing the gas to diffuse into the sensor through a capillary port, rather than diffusing through membranes. The result is an extremely stable sensor with very low temperature and pressure coefficients and the capability to monitor gas as ppm. 1.4 MECHANICAL The sensor module is comprised of the following three primary components: 1.4.1 ENCLOSURE...
  • Page 7 Model 4501-XX Toxic Gas Sensor Module Figure 1-1 Model 4501-05-AL or SS Hydrogen Sulfide Gas Sensor Module Figure 1-2 Model 4501-XX Hydrogen Sulfide Gas Sensor Module– Orientation Options Page 3 of 33...

  • Page 8: Cautions & Warnings

    2.1 INTRODUCTION Although the 4501-XX Gas Sensor Module is designed and constructed for installation and operation in industrial applications including hostile environments, caution should be taken to insure that the installation is made in compliance with this instruction manual and that certain procedures and conditions are avoided. This chapter discusses the necessary cautions.

  • Page 9: Quick Start

    3.1 OVERVIEW The gas sensor module has been supplied factory calibrated and ready for immediate installation and operation. An installer familiar with installation and operation of gas detection products can use this section to begin immediate use of the module. 3.2 WIRING Provide two conductor twisted shielded wiring from the power supply/control device to the sensor module location.

  • Page 10: Installation

    4.1 SENSOR MODULE LOCATIONS The gas sensor module utilizes a diffusion type sensor which should be located close to either the expected source or destination of the gas hazard. If the gas is heavier than air, the sensor module should be installed within 24 inches of the ground or floor.

  • Page 11: Wiring

    4.2 WIRING  Wire should be 18 AWG minimum at a maximum distance is 5,000 feet. Install conduit as required by local code or construction specifications.  See figure 4-2 for typical 2 terminal and 4 terminal connections. 4.3 ENCLOSURE INSTALLATION To protect the transmitter and sensor assembly they should be removed from the enclosure and preserved until final installation and wiring termination.

  • Page 12: Transmitter And Sensor Installation

    4.4 TRANSMITTER AND SENSOR INSTALLATION When all pre-wiring is complete: 1. Install sensor assembly in the open hub on the module enclosure. The sensor assembly thread must be fully seated into the hub and tightened to maintain explosion proof assembly. 2.

  • Page 13: Operation

    5.1 INTRODUCTION The 4501-XX Toxic Gas Sensor Module utilizes a visual menu system operated by means of a magnet with the cover in place. A magnet stick is supplied for this purpose. Access the menu system to calibrate the sensor module, and for maintenance and diagnostic procedures. The following adjustments can be made to the sensor module: ...

  • Page 14: Main Menu

    5.3 MAIN MENU Function Display Mode   Enter     Down   4501-XX CAL 180 4501-XX Version 4501-XX Starting XXX.PPM Mode CALIB:   Down SETUP:   Down MAINT:   Down Exit-?   Table 5-2 defines the key operational displays on the operator interface.

  • Page 15: Setup Sub-Menu

    5.4 SETUP SUB-MENU The sensor module set-points menu is used to initially set-up the range and 4-20 mA calibration.  Range: Once the Set-up menu is selected, press key [▼] twice and press [E] to activate the Range Set- up menu. Use the [▲] or [▼] keys to select Range menu and press [E]. When “Range” is selected menu provides any choices of ranges available for the gas type selected.

  • Page 16: 5-1: Master Menu

    Function Display Default Display (example 4501-05) XX PPM Mode   CALIB: Down SETUP:   Enter Range S.P. Function - Range Adjust   Select [E] to select or  or  to select another and press [E] Enter ...

  • Page 17: Maintenance Sub-Menu

    5.5 MAINTENANCE SUB-MENU The maintenance menu enables the operator to view sensor and software versions. Sierra Monitor technical support has access to other values as needed. The maintenance menu operation is described in Table 5-4. Function Display Mode Default Display(example 4501-05) XXX PPM ...

  • Page 18: Calibration

    6.1 CALIBRATION FREQUENCY The sensor module must be calibrated every 180 days at a minimum. Periodic functional tests are advisable for critical applications and hostile environments. The sensor module microprocessor software includes high-level self checking algorithms which provide continuous sensor diagnostic and self adjustment. 6.2 CALIBRATION PREPARATION Calibration of the sensor is accomplished by simple menu based steps and application of span gas.

  • Page 19: Calibration Sub-Menu

    6.5 CALIBRATION SUB-MENU Function Display XXXPPM Default Display Mode Mode Function - Calibrate   CALIB:-- Enter Banner: Apply zero gas, enter <E> when done   Cal Zero Operation: Confirm area clear of gas, or apply zero air to sensor.

  • Page 20: Service

    SENSOR MODULE CONFIGURATION The gas sensor module is comprised of the following sub-assemblies (Figure 7-1): 4501-XX SPL27077 SPM27071 XXXXXXX XXXXXXX There are no field serviceable components below the sub assembly level. Area must be determined to be non-hazardous before opening enclosure. ENCLOSURE REPLACEMENT The enclosure should be replaced if the cover threads or conduit threads have been damaged, or if the enclosure has been damaged sufficiently that it no longer meets the required NEMA classification.

  • Page 21: Transmitter Replacement

    TRANSMITTER REPLACEMENT The transmitter assembly should be replaced when it is determined that it is unreliable, noisy or cannot be adjusted for calibration. This may occur due to age, corrosion or failed components. To replace the transmitter assembly: a. Remove the cover of the main enclosure. b.

  • Page 22: Inspection And Troubleshooting Guide

    7.5.4 MOISTURE TRAPS AND RAINSHIELDS  Conduit seals and drains installed to avoid moisture build up in electronics enclosure. Water accumulation in sensor module enclosures is a major cause of damage and system failures - take precautions to seal electrical conduits and provide moisture traps and drains to avoid water damage. ...

  • Page 23: Appendices

    8.1 APPENDIX A: SPECIFICATIONS Sensor: Type: Electrochemical Max Range (1) Zero Drift 0-25% Vol. +/- 0.5 Vol. 4501-03 O 0-1200 PPM +/- 1 PPM 4501-04 CO 0-100 PPM +/- 0.5 PPM 4501-05 H 0-10 PPM +/- 0.5 PPM 4501-06 Cl 0-3 PPM +/- 0.5 PPM 4501-08 ClO...
  • Page 24 Enclosure: Dimensions: Weight: Material of Construction: Housing: Electrical Approvals: Factory Mutual (FM): Hazardous Locations: (All Models) Performance Approvals: FM Performance Approval: (4501-05 only) Warranty: Limited Warranty: Specifications subject to change without notice Model 4501-XX Toxic Gas Sensor Module 7.0 x 3.6 x 4.0 inches (H x W x D) (17.8 x 9.1 x 11.2 cm) 2.2 lb.
  • Page 25 Cross Sensitivity Data: 4501-04 Carbon Monoxide Conc. 15 PPM 5 PPM 35 PPM 5 PPM 100 PPM 100 PPM 10 PPM 5 PPM 4501-05 Hydrogen Sulfide Conc. 400 PPM 20 PPM 50 PPM 10 PPM 10 PPM 400 PPM 400 PPM 20 PPM 4501-06 Chlorine Conc.

  • Page 26: Appendix B: Model Numbers & Parts List

    8.2 APPENDIX B: MODEL NUMBERS & PARTS LIST Sensor Module 4501-03 4501-04 4501-05 4501-06 4501-08 4501-10 4501-12 4501-25 Options 5311-00 5311-02 Calibration Items 1250-01 1250-02 1250-03 1260-00 1260-04 1260-05 1260-06 1260-10 1260-12 1260-13 5360-00 1256-01 1256-02 1265-03 5358-01 5358-51 9210-00 9211-09 SPX27057 SPX27061...
  • Page 27 Model 4501-XX Toxic Gas Sensor Module SPL27077 Module Enclosure SS Page 23 of 33...

  • Page 28: Appendix C: Limited Warranty

    Model 4501-XX Toxic Gas Sensor Module 8.3 APPENDIX C: LIMITED WARRANTY SIERRA MONITOR CORPORATION warrants its products to be free from defects in workmanship or material under normal use and service for two years after date of shipment. SMC will repair or replace without charge any equipment found to be defective during the warranty period.

  • Page 29: Appendix D: 4501-25/26 Gas Sensor Module

    8.4 APPENDIX D: 4501-25 & 4501-26 GAS SENSOR MODULE 1. Calibration of 4501-26 (Follow instructions in Section 6) 2. Calibration of 4501-25 (See below) 3. Equipment Required The following tools and equipment will be required for calibration: Permeation Device Calibrator (Model 9210-00), with Ammonia Permeation Tube (Model 9211-09).

  • Page 30: 8-1: Module Components

    Electrolyte/Membrane Replacement (See Fig. 8-2) – Models 4501-25 and 4501-26 The electrolyte needs to be replaced at least every six months, or if there is evidence of low sensor output. The membrane and O-Ring should be replaced at the same time that the electrolyte is replaced.
  • Page 31 Model 4501-XX Toxic Gas Sensor Module i. Replace the pressure compensation screw into the electrolyte supply port. j. Replace the sensor housing cover. k. Install the sensor assembly into the enclosure hub and tighten firmly. l. Reconnect the sensor harness to the transmitter, carefully install the transmitter into the housing and restore system power.

  • Page 32: 8-2: Sensor Assembly - Exploded View

    Model 4501-XX Toxic Gas Sensor Module Figure 8-3 Model 4501-25-AL and Model 4501-26-AL Figure 8-4 Model 4501-25-SS and Model 4501-26-SS Page 28 of 33...

  • Page 33: Appendix E: Us Fm Approval

    Model 4501-XX Toxic Gas Sensor Module 8.5 APPENDIX E: US FM APPROVAL Page 29 of 33...
  • Page 34 Model 4501-XX Toxic Gas Sensor Module Page 30 of 33...

  • Page 35: Appendix F: Canadian Fm Approval

    Model 4501-XX Toxic Gas Sensor Module 8.6 APPENDIX F: CANADIAN FM APPROVAL Page 31 of 33...
  • Page 36 Model 4501-XX Toxic Gas Sensor Module Page 32 of 33...
  • Page 37 Model 4501-XX Toxic Gas Sensor Module Page 33 of 33...
  • Page 38 4-20MA AMMONIA CALIBRATION DATA ENTRY KEYPAD ENCLOSURE INSTALLATION MAINTENANCE MOUNTING Model 4501-XX Toxic Gas Sensor Module INDEX POWER RANGE 4, 14 SENSOR SET-UP 2, 7, 16 SPECIFICATIONS 1, 28, 30 THEORY OF OPERATION 5, 17 TRANSMITTER TROUBLESHOOTING WIRING Page 34 of 33 2, 4, 6, 14, 16, 17 2, 5, 8, 17 4, 5...

This manual is also suitable for:

4501-044501-064501-054501-xx4501 series4501-03 ... Show all

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