SMC 4501-04 - Manual

Model 4501-XX Toxic Gas Sensor Module 1. 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 • Non-intrusive o...

Model 4501-XX Toxic Gas Sensor Module Page: 2 1.4 MECHANICAL The sensor module is comprised of the following three primary components: 1.4.1 ENCLOSURE Explosion proof, rain-tight stainless steel electrical housing with three ¾” FNPT conduit hubs. The enclosure cover has a viewing window. The 3 condu...

Model 4501-XX Toxic Gas Sensor Module Figure 1-1 Model 4501-05 Hydrogen Sulfide Gas Sensor Module– Dimensions Figure 1-2 Model 4501-05 Hydrogen Sulfide Gas Sensor Module– Orientation Options Page: 3

Model 4501-XX Toxic Gas Sensor Module 2. 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 ma...

Model 4501-XX Toxic Gas Sensor Module 3. 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...

Model 4501-XX Toxic Gas Sensor Module 4. 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...

Model 4501-XX Toxic Gas Sensor Module 1. Remove the transmitter from the module housing by: • Unscrew the two captive panel screws on the faceplate. • Lift the transmitter out of the enclosure. • Unplug the sensor cable from transmitter connector J1. • Remove the sensor assembly from the enclosure h...

Model 4501-XX Toxic Gas Sensor Module 5. OPERATION 5.1 INTRODUCTION The 4501-XX Toxic Gas Sensor Module utilizes a visual menu system operated by means of a magnet. A magnet stick is supplied for this purpose. The menu system is used to calibrate the sensor module, and for maintenance and diagnostic...

Model 4501-XX Toxic Gas Sensor Module 5.3 MAIN MENU Function Display Description Reference M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T W arm 148 XX.XXaA Second screen at start-up, count down of W arm-up H2S XXX.PPM Default Display (example 4501-05) Key Mode Switch [M] Enter Switc...

Model 4501-XX Toxic Gas Sensor Module 5.4 MAINTENANCE SUB-MENU Function Display Description Reference M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T Enter 4mA DONE Acknowledges 4mA calibration or Sub-Routine A M- Range 100 PPM Enter Calibration Range Menu Ban...

Model 4501-XX Toxic Gas Sensor Module 5.5 DIAGNOSTICS SUB-MENU Function Display Description Reference M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S T M E S ...

Model 4501-XX Toxic Gas Sensor Module 6. CALIBRATION 6.1 CALIBRATION FREQUENCY The sensor module must be calibrated every 180 days. Periodic functional tests are advisable for critical applications and hostile environments. The sensor module microprocessor software includes high-level self checking ...

Model 4501-XX Toxic Gas Sensor Module 7. SERVICE 7.1 SENSOR MODULE CONFIGURATION The gas sensor module is comprised of the following sub-assemblies (Figure 7-1): 4501-XX Gas Sensor Module SPL27077 Enclosure SPM27071 Transmitter Assembly XXXXXXX Sensor Assembly (see Appendix B) XXXXXXX Sensor (see Ap...

Model 4501-XX Toxic Gas Sensor Module 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. Remov...

Model 4501-XX Toxic Gas Sensor Module • Wiring terminations clean and correct. 7.1.4 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 ...

Model 4501-XX Toxic Gas Sensor Module 8. APPENDICES APPENDIX A: SPECIFICATIONS Specifications: Sensor: 4501-04 4501-05 4501-06 Max. Range (1) 0-1200 PPM 0-100 PPM 0-10 PPM Zero Drift +/- 1 PPM +/- 0.5 PPM +/- 0.5 PPM Repeatability +/- 1 PPM +/- 1 PPM +/- 0.5 PPM Linearity +/- 1 PPM +/- 1 PPM +/- 0.5...

Model 4501-XX Toxic Gas Sensor Module Page: 19 Warranty: Limited warranty: 2 year specifications subject to change without notice Model Number Gas Type CO H 2 S CI 2 H 2 SO 2 NO 2 NO HCI HCN C 2 H 4 4501-04-IT CO 100 5 0 <20 0 0 6 0 0 <50 4501-05-IT H 2 S <2 100 -20 <0.1 <15 -15 0 0 0...

Model 4501-XX Toxic Gas Sensor Module APPENDIX B: MODEL NUMBERS & PARTS LIST Sensor Module 4501-04 Sensor Module 2-wire, CO 4501-05 Sensor Module 2-wire, H2S 4501-06 Sensor Module 2-wire, CI 2 Options 5394-52 Remote Sensor/Display Option 5311-00 Rainshield Calibration Items 1250-01 Gas Sensor Ca...

Model 4501-XX Toxic Gas Sensor Module Page: 21 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 f...