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cGas Detector Analog Transmitter - Operation Manual

Rev. B | 2020.07

TABLE OF CONTENTS

1 POLICIES .......................................................................................................5

1.1 Important Note ....................................................................................... 5

1.2 Warranty Policy ...................................................................................... 6

1.3 Service Policy ......................................................................................... 6

1.4 Copyrights .............................................................................................. 7

1.5 Disclaimer ............................................................................................... 7

1.6 Revisions ................................................................................................ 8

2 INTRODUCTION .............................................................................................9

2.1 General Description................................................................................ 9

2.2 Key Features ........................................................................................... 9

3 INSTRUMENT SPECIFICATIONS ..................................................................10

3.1 Technical Specifications

...................................................................... 10

3.2 Enclosure Dimensions ......................................................................... 13

4 SENSOR SPECIFICATIONS ..........................................................................13

4.1 Available Internal Gas Sensors ........................................................... 13

4.2 Optional RH & Temperature Sensor (Option -RHT) ............................ 14

5 INSTRUMENT FEATURES ............................................................................14

5.1 Exterior Enclosure ................................................................................ 14

5.2 Interior System Layout ......................................................................... 15

6 INSTALLATION ............................................................................................16

6.1 General Safety Warnings ..................................................................... 17

6.2 Protection Against Electrical Risks ..................................................... 17

6.3 Protection Against Mechanical Risks ................................................. 17

6.4 Mounting the Transmitter .................................................................... 18

6.4.1 Wet Environment Considerations ................................................ 19

Содержание CGAS-A Series

Страница 1: ...Rev B 2020 22 www critical environment com CGAS A CO2 Detector Analog Transmitter Installation Operation Manual...

Страница 2: ...9 2 2 Key Features 9 3 INSTRUMENT SPECIFICATIONS 10 3 1 Technical Specifications 10 3 2 Enclosure Dimensions 13 4 SENSOR SPECIFICATIONS 13 4 1 Available Internal Gas Sensors 13 4 2 Optional RH Temper...

Страница 3: ...es 25 7 4 Display Settings 27 7 4 1 Adjust Display Brightness 27 7 4 2 Display Information Normal or Minimal 28 7 4 3 Display or Hide Gas Channel RH Temperature Readings 28 7 5 Alarm Status Fault Dete...

Страница 4: ...Null Calibration 43 9 2 3 Span Calibration 44 9 3 Troubleshooting Zero and Span Calibration 45 9 3 1 Calibration Adapter Plug Doesn t Fit 46 9 3 2 Zero Fault 46 9 3 3 Span Fault 46 9 3 4 Zero Overrid...

Страница 5: ...fied electrician or factory trained technician and according to instructions indicated in this manual This instrument should be inspected and calibrated regularly by a qualified and trained technician...

Страница 6: ...is only to be used for the purposes stated in the manual Critical Environment Technologies is not liable for auxiliary interfaced equipment or consequential damage Prior to shipping equipment to CETC...

Страница 7: ...yright laws this manual may not be copied or translated in whole or in part in any manner or format without the written permission of CETCI Modbus is a registered trademark of Gould Inc Corporation BA...

Страница 8: ...the manufacturer reserves the right to make changes at any time without notice In addition due to improvements made to our products there may be information in this manual that does not exist in the...

Страница 9: ...2 The sensors utilized in this device are accurate enough to measure to Occupational Health Safety OHS hazardous levels for toxic gases The transmitter operates by diffusion 2 2 Key Features Single ch...

Страница 10: ...installed Copper coated interior to reduce RF interference Weight 400 g 14 oz Size 127 mm x 127 mm x 71 mm 5 0 in x 5 0 in x 2 8 in Conduit Entry Points 12 7 mm 1 2 in diameter Mounting Holes 4 47 mm...

Страница 11: ...eferenced 3 conductor shielded 18 AWG or larger stranded within conduit Fuses Automatic resetting thermal INPUT OUTPUT Analog Output One Linear 4 20 mA output signals gas reading RH Temperature Option...

Страница 12: ...TIFICATION ACNOR COUVRE UNIQUEMENT LES RISQUES DE CHOC ELECTRIQUE ET D INCENDIE D ORIGINE ELECTRIQUE Conforms to CSA C22 2 No 205 12 UL508 Edition 18 2018 Conforms to EMC Directive 2014 30 EU EN 50270...

Страница 13: ...Rev B 2020 07 cGas Detector Analog Transmitter Operation Manual 3 2 Enclosure Dimensions 4 SENSOR SPECIFICATIONS 4 1 Available Internal Gas Sensors Infrared Sensors Part Numbers Range Lifespan Carbon...

Страница 14: ...tive humidity and temperature sensor the analog output signal be used to send the gas reading signal to a controller or BAS DDC Therefore the RH temperature readings are for display purposes only ther...

Страница 15: ...ures door shut Lock Slot For security padlock or tie 5 2 Interior System Layout NUMBER FEATURE FUNCTION Programming Buttons Access menu options and program functions using buttons inside the enclosure...

Страница 16: ...sidering the gas readings to be accurate If the device is not installed within two weeks of delivery the sensor may require a longer warm up time to stabilize approximately 48 hours and provide accura...

Страница 17: ...components except the sensors 6 2 Protection Against Electrical Risks Disconnect all power before servicing There may be multiple power sources Power supply may have a building installed circuit break...

Страница 18: ...ce the door hinges over the installed base hinges with the unit fully open and push towards the wall The hinges should easily snap back into place The enclosure has one screw securing the door to the...

Страница 19: ...on the conduit hub entering the cGas Detector enclosure must be liquid tight type Any water or physical damage to the transmitter that occurs from the installer drilling their own installation holes w...

Страница 20: ...r electrical equipment may interfere with the response of the gas detectors 6 4 3 Mounting Height The sensor mounting height depends on the molecular weight of the gas in relation to the molecular wei...

Страница 21: ...tom NUMBER FEATURE Door Hinge Conduit Entry Points 12 7 mm 1 2 in diameter 6 6 Wiring Connections The cGas Detector analog transmitter is a low voltage powered device Any application of operating volt...

Страница 22: ...ther be supplied by the QCC or FCS and any additional power requirements of the system will be supplied by RPS 24VDC Remote Power Supply devices In an analog configuration a dedicated 4 20 mA signal w...

Страница 23: ...re can pull a soldered terminal strip completely off a circuit board and this will not be covered under warranty 6 6 1 Analog Wire Gauge vs Run Length The table below shows the maximum cable length be...

Страница 24: ...and Warm up Process From Factory Upon application of power to a cGas Detector shipped from the factory the LCD display will turn on and rotate through several info screens that differ depending on th...

Страница 25: ...UP button A line under a character or number indicates that is the space into which you are entering a character or number Use the ENTER button to move to the next space Or use the UP or DOWN button t...

Страница 26: ...elected Alarm Level Set Alarm Setpoint Set Alarm Direction Ascending Descending Set Alarm Hysteresis Fault Reading 3022 Config Menu Selected Channel Enable Disable Channel Read from Sensor Write to Se...

Страница 27: ...version the gas type and AD counts the channel number gas type and gas level and temperature and relative humidity if option is installed 7 4 1 Adjust Display Brightness The brightness of the display...

Страница 28: ...n display press ENTER Enter passcode 1014 using the UP button and ENTER button Enter Password 1014 Press ENTER to access the Display Menu DisplayMenu Press Enter Display Type Normal Press ENTER Use th...

Страница 29: ...ts present condition press ENTER Use the UP button to choose Hidden or Unhidden and press ENTER to save and Exit Repeat for each channel you want to hide or unhide 7 5 Alarm Status Fault Detection and...

Страница 30: ...ot to show on the display you must hide the line Refer to Section 7 4 3 Display or Hide Gas Channel RH and or Temperature Readings NOTE The cGas Detector has one gas channel Enabling the temperature a...

Страница 31: ...38 RH 7 7 Setting Channel Alarm Setpoints Direction and Hysteresis NOTE The cGas Detector DOES NOT HAVE an internal alarm Alarm setpoints should be configured at the controller or BAS DCC Configuring...

Страница 32: ...the alarm condition will stop when the gas reading goes below the alarm setpoint For example if the alarm setpoint is 100 ppm and the hysteresis is 5 ppm when the gas concentration reaches or exceeds...

Страница 33: ...Press ENTER and continue Selected Alarm Mid Alarm Press the Up button until you see Alarm Setpoint confirm the desired number is showing Alarm Setpoint 800 PPM If you want to enter a different alarm s...

Страница 34: ...m Celsius to Fahrenheit or vice versa very easily From the main display press ENTER Enter passcode 3032 using the UP button and ENTER button Enter Password 3032 Press ENTER to access the Calibrate Men...

Страница 35: ...ring the ambient temperature or relative humidity you can adjust the reading by setting an offset value so the reading is more accurate The Temperature offset value is a number of degrees in either di...

Страница 36: ...ut and will stop the analog output from sending a signal to the controller or control panel This may be useful if you need to perform maintenance on or replace the transmitter NOTE If the analog outpu...

Страница 37: ...s expected From the main display press ENTER Enter passcode 0001 using the UP button and ENTER button Enter Password 0001 Press ENTER to access the Test Menu Test Menu Press Enter In the Test AO menu...

Страница 38: ...r board is installed the information it contains must be written to the main circuit board 8 1 How to Replace a New Smart Sensor Board Smart board replacement sensors arrive pre calibrated and factory...

Страница 39: ...nu Press Enter In the Selected Channel menu confirm the desired channel is showing Selected Channel CH1 CO2 Press the UP button to find Read From Sensor Press ENTER Read from Sensor CH1 Left Read from...

Страница 40: ...change from NO to YES and press ENTER to select The system will Write the sensor configuration information to the smart sensor board 9 CALIBRATION 9 1 Calibration Specifications 9 1 1 Gas Calibration...

Страница 41: ...C or use the Cal Clip hands free adapter part number CET SGC 9 1 4 Calibration Frequency Follow local codes and regulations OHS applications Once every 6 months OHS Occupational Health Safety For best...

Страница 42: ...he calibration gas cylinder you are using This is especially important if you are not using the same Cal gas concentration that was used previously to calibrate the device How much gas the sensor dete...

Страница 43: ...gen gas for 4 minutes before entering the Calibrate Zero menu From the main display press ENTER Enter passcode 3032 using the UP button and ENTER button Enter Password 3032 Press ENTER to access the C...

Страница 44: ...et gas to correct drift and keep linearity NOTE To exit the Span Calibration at any time press ENTER When calibrating a CO2 sensor flow the span gas for 4 minutes before entering the Calibrate Span me...

Страница 45: ...the Span calibration was accepted press ENTER and use the UP button navigate to Exit and press ENTER to exit Remove the cylinder of span gas If the Span calibration was not successful refer to Section...

Страница 46: ...gen long enough or if the sensor detects ambient gas readings that are at an unacceptable level due to not enough clean air there is enough residual target gas in the environment or other gases that a...

Страница 47: ...above the fault limit the display will indicate that an override is required To override the value use the UP button to select Y and press ENTER To keep the original value leave the indicator on N an...

Страница 48: ...Y Press ENTER to make another adjustment to the number confirm and repeat until the desired current output is reached on the multi meter in this example keep adjusting the number until the multimeter...

Страница 49: ...and when attached the enclosure meets IP54 standards To calibrate a device with a splash guard use the Cal Clip NOTE The splash guard will slow down the response time of the sensor 10 2 Calibration Ad...

Страница 50: ...are openings in the front to allow gas and air to flow through to the sensor With only four slotted mounting holes installation and removal for gas detector servicing is easy Enclosure 16 gauge galvan...

Страница 51: ...ly no maintenance other than regular calibration of the sensor s There are no replaceable components except the sensors The transmitter should be monitored for possible damaging conditions The sensor...

Страница 52: ...e Span passes but the gas level reading keeps climbing Start the calibration process over Flow the nitrogen gas for 4 minutes before entering the Calibrate Zero menu Then flow the span gas for 4 minut...

Страница 53: ...d Fault cGas cannot communicate with the smart board Ensure the smart board is installed and installed on the correct side left if a single channel unit Otherwise power cycle or replace the sensor sma...

Страница 54: ...Manual Rev B 2020 07 FO7 RH Temp Fault cGas cannot communicate with the sensor Ensure the smart board is installed correctly If unresolved contact our Technical Support Department F30 AO DAC is not r...

Страница 56: ...t 145 7391 Vantage Way Delta BC V4G 1M3 Canada Tel 1 604 940 8741 Toll Free 1 877 940 8741 www critical environment com CGAS A 2020722 Rev B 2020 All rights reserved Data subject to change without not...

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