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Sierra Monitor Corporation 4105 manual

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Table of contents for the manual

  • Page 1

    MODEL 4105 SERIES GAS SENSOR MODULE WITH DIGI TAL DISPL AY AND NON-INTRUSIVE CALIBR ATION 4-20 mA[...]

  • Page 2

    Sierra Monitor Corporation 1991 T arob Court, Milpitas, C A 95035 (408) 262-66 11 (800) 727-4377 Fax: (408) 262-9042 E-Mail: sierra@sierramonito r .com MODEL 4105 SERIES GAS SENSOR MODULE WITH DIGI TAL DISPL AY AND NON-INTRUSIVE CALIBR ATION 4-20 mA APPLICABILITY & EFFECTIVITY This manual provides instructions for the following Sierra Monitor p[...]

  • Page 3

    TABLE OF CONTENTS SECTION PAGE 1. PRODUCT DESCRIPTION 1 1.1 Introduction 1 1.2 Application 1 1.3 Configuration 1 1.3.1 Electronics 1 1.3.2 Sensor 1 2. CAUTIONS WARNINGS & RECOMMEND A TIONS 2 2.1 Introduction 2 2.2 Wiring 2 2.3 Sensor Modules - General 2 2.4 Preventative Maintenance 2 3. QUICK S TART 3 3.1 Overview 3 3.2 Wiring 3 3.3 Module Inst[...]

  • Page 4

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 1 1. PRODUCT DESCRIPTION 1.1 Introduction Model 4105 Series Gas Sensor module features non- intrusive calibration, 4-20 mA output signal and local continuous display of the gas concentration in ppm (toxics), % LEL (Combustibles), or % vol (Oxygen). It is designed for use with industry st[...]

  • Page 5

    Model 4105 Gas Sensor Module (12/02) Page: 2 Instruction Manual 2. CAUTIONS WARNINGS & RECOMMEND ATIONS 2.1 INTRODUCTION Although the sensor module is designed and con- structed for installation and operation in industrial applications including “hostile” environments, cau- tion should be taken to insure that the installation is in complian[...]

  • Page 6

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 3 3. QUICK S TART 3.1 Overview The gas sensor module has been supplied factory cali- brated and ready for immediate installation and opera- tion. An installer familiar with installation and opera- tion of gas detection products can use this section to begin immediate use of the monito r.[...]

  • Page 7

    Model 4105 Gas Sensor Module (12/02) Page: 4 Instruction Manual 4. OPER ATION 4.1 Introduction Under normal conditions the sensor module does not require operator or technician intervention. The fol- lowing are conditions under which the module requires attention: - Routine periodic calibration. - Calibration after a high gas alarm. - Sensor replac[...]

  • Page 8

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 5 Model Gas Min. Flow Rate (cc/min) 4105-02 CH 4 100 4105-03 O 2 100 4105-04 CO 150 4105-05 H 2 S 300 4105-06 Cl 2 300 4105-07 H 2 300 4105-10 SO 2 300 4105-12 NO 2 300 4105-21 HCl 300 4105-22 HCN * 300 4105-25** NH 3 400 4105-26 HF 500 *Note: SO 2 may be used instead of HCN to calibrate[...]

  • Page 9

    Model 4105 Gas Sensor Module (12/02) Page: 6 Instruction Manual 6. SERVICE 6.1 Sensor Module Configuration The gas sensor module is comprised of the following sub assemblies: 4105-XX Gas Sensor Module -SPM25002 Transmitter Assembly -SPT25013 Combustible Gas Sensor Module Transmitter Assembly -SPM25003 Oxygen and Toxic Gas Sensor Module Transmitter [...]

  • Page 10

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 7 6.4a. Combustibles 1. V erify the voltage across A to R equals 2 volt. If not, adjust volts potentiometer R11 2. V erify the voltage from GND (TB2) to VOUT equals 0.4 volts. If not adjust BAL potentiom- eter (R2) 3. V erify that the voltage at VOUT is equal to the voltage desired. • [...]

  • Page 11

    Model 4105 Gas Sensor Module (12/02) Page: 8 Instruction Manual 7. INS TALLATION 7.1 Sensor Locations Select locations for each of the sensors based on the following: - Consider the density of the gas to determine height of sensor above floor or ground level. - Sensors should be placed close to the potential source of gas. - Sensors should be place[...]

  • Page 12

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 9 Figure 7.2 Wiring Diagram Combustible P 1 T B 1 T B 2 R I B B O N C A B L E T O C P U A S S Y . V O U T J P 1 1 3 2 4 U 2 U 4 U 5 R A C U 3 V O L T S B A L R 2 R 1 1 U 1 Sen sor P w r./Sig. Black Brown Red T oxics P 1 T B 1 T B 2 R I B B O N C A B L E T O C P U A S S Y . V O U T J P 2 [...]

  • Page 13

    Model 4105 Gas Sensor Module (12/02) Page: 10 Instruction Manual Model 4105-02 4105-03 4105-04 4105-05 4105-06 4105-07 4105-10 Gas Comb. O 2 CO H 2 S Cl 2 H 2 SO 2 Sensor Type Catalytic E.C. E.C. E.C E.C. E.C. E.C. Units %LEL % Vol ppm ppm ppm ppm ppm Range 0-100 0-25% 0-1000 0-100 0-10 0-1000 0-100 Resolution 3% F .S. 0.1% F .S. 1 0.1 0.1 2 0.5 Re[...]

  • Page 14

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 11 Model 4105-12 4105-21 4105-22 4105-25 3 4105-26 3 Gas NO 2 HCL HCN NH 3 HF Sensor Type E.C. E.C. E.C. E.C. E.C. Units ppm ppm ppm ppm ppm Range 0-20 0-20 0-20 0-50 0-10 Resolution 0.2 0.5 0.1 0.1 0.5 Response Time 35 sec. 150 sec 70 sec. 45 sec. 30 sec. to 90% of signal Sensor Life 2 [...]

  • Page 15

    Model 4105 Gas Sensor Module (12/02) Page: 12 Instruction Manual Model Gas Reading from 100 ppm of interfering gas Number Type CO H 2 S Cl 2 H 2 SO 2 NO 2 NO HCl HCN C 2 H 4 4105-04 CO 100 315 -15 <40 50 -55 30 2 40 <50 4105-05 H 2 S <0.5 100 -20 <0.1 <15 -15 0 0 0 0 4105-06 Cl 2 0 <-10 100 0 0 105 0 0 0 0 4105-07 H 2 <1 <20[...]

  • Page 16

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 13 10. LIMITED WARRANTY SIERR A MONITOR CORPOR A TION 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 warra[...]

  • Page 17

    Model 4105 Gas Sensor Module (12/02) Page: 14 Instruction Manual Appendix A: Unity Gain Mode The Unity magnetic control is available during CAL MODE to allow the ZERO and S PAN adjustments to be centered within their range. This is similar to setting a potentiometer so the wiper terminal is exactly halfway between the clockwise and counterclockwise[...]

  • Page 18

    Instruction Manual Model 4105 Gas Sensor Module (12/02) Page: 15 Appendix C: Combustible Gas Scaling Factors ( T able 1) Where possible, calibration gas should be the same as the gas to be detected. If this is not possible then a scaling factor should be used to determine the “equivalent value” of the calibration gas in terms of the gas to be d[...]

  • Page 19

    Model 4105 Gas Sensor Module (12/02) Page: 16 Instruction Manual GAS METHANE PROPANE FACTOR FACTOR Acetaldehyde 60 109 Acetic Acid 54 98 Acetic Anhydride 46 83 Acetone 52 94 Acetylene 57 103 Alkyl Alcohol 51 92 Ammonia 126 229 n-Amyl Alcohol 33 59 Aniline 39 71 Benzene 41 74 Biphenyl 25 45 1,3-Butadiene 56 101 n-Butane 58 106 iso-Butane 52 94 Buten[...]