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Critical Environment Technologies cGas Detector Operation Manual

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Rev. A | 2019.07
cGas Detector
Digital Transmitter
Operation Manual
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  • Page 1 Rev. A | 2019.07 cGas Detector Digital Transmitter Operation Manual www.critical-environment.com...

  • Page 2: Table Of Contents

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 TABLE OF CONTENTS 1 POLICIES ......................5 1.1 Important Note ....................5 1.2 Warranty Policy ....................6 1.3 Service Policy ....................7 1.4 Copyrights ......................8 1.5 Disclaimer ......................8 1.6 Revisions ......................8 2 INTRODUCTION ..................... 9 2.1 General Description ..................9...
  • Page 3 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual 6.3 Display Settings .....................22 6.3.1 Adjust Display Brightness ................6.3.2 Display Con gurations ..................6.3.3 Display or Hide Line 1 and/or 2 ............... 6.4 Alarm Status, Fault Detection and Communication Failure Noti cations ..25 6.5 Setting Channel Alarm Setpoints, Direction and Hysteresis ......26...
  • Page 4 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 9 CALIBRATION ....................49 9.1 Calibration Speci cations ................49 9.1.1 Gas ........................9.1.2 Regulators & Flow ................... 9.1.3 Adapters......................9.1.4 Calibration Frequency ..................9.1.5 Gas Testing Frequency (Bump Testing) ............

  • Page 5: Policies

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual 1 POLICIES 1.1 Important Note Read and understand this manual prior to using this instrument. Carefully read the warranty policy, service policy, notices, disclaimers and revisions on the following pages.

  • Page 6: Warranty Policy

    Rev. A | 2019.07 1.2 Warranty Policy Critical Environment Technologies Canada Inc. (the manufacturer) warrants this gas monitoring instrument, (excluding sensors, battery packs, batteries, pumps and lters), to be free from defects in materials and workmanship for a period of two years from the date of purchase from our facility.

  • Page 7: Service Policy

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual 1.3 Service Policy CETCI maintains an instrument service facility at the factory. Some CETCI distributors / agents may also have repair facilities; however, CETCI assumes no liability for service performed by anyone other than CETCI personnel.

  • Page 8: Copyrights

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 1.4 Copyrights This manual is subject to copyright protection; all rights are reserved. Under international and domestic copyright 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.

  • Page 9: Introduction

    2 INTRODUCTION 2.1 General Description Thank you for purchasing our cGas Detector Transmitter. The cGas Detector is a one or two channel gas detection transmitter that o ers exible customization options with the purpose of meeting your speci c application and budgetary requirements. Ideal for monitoring toxic, combustible and...

  • Page 10: Key Features

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 (OHS) hazardous levels for toxic gases. The transmitter operates by di usion. 2.2 Key Features • 1 or 2 gas channel operation • User con gurable Modbus® RS-485 RTU or BACnet® MS/TP communication protocols for communication with a Controller or Building Automation System (BAS) •...

  • Page 11: Instrument Specifications

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual 3 INSTRUMENT SPECIFICATIONS 3.1 Technical Speci cations MECHANICAL ABS / Polycarbonate, IP54 rating with splash guard installed. Enclosure 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...
  • Page 12 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 ELECTRICAL 16 - 30 VDC, 3 W, Class 2 Power Requirement 12 - 27 VAC, 50-60 Hz, 3 VA, Class 2 24V recommended. VDC or VAC (ground referenced) four-conductor shielded 16 AWG...
  • Page 13 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual RH and Temperature Available for CO and CO models only (Option -RHT) ENVIRONMENTAL 0°C to 40°C / 32°F to 104°F (standard) Operating Temperature -40°C to 40°C / -40°F to 104°F (with Option -LT)

  • Page 14: Enclosure Dimensions

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 3.2 Enclosure Dimensions Above dimensions are shown with optional splash guard. Without splash guard, thickness is 71 mm / 2.8 in. The area required for enclosure door to be open 90 degrees is 178 mm / 7.0 in or 254 mm / 10.0 in for fully open.

  • Page 15: Sensor Specifications

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual 4 SENSOR SPECIFICATIONS 4.1 Single Channel Gas Sensor Options Electrochemical Sensors Part Numbers Range Lifespan Ammonia (NH CGAS-D-NH3 0 - 500 ppm ± 2 years Carbon Monoxide (CO) CGAS-D-LCO 0 - 200 ppm ±...
  • Page 16 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 Phosphine (PH CGAS-D-PH3 0 - 5 ppm ± 2 years Silane (SiH CGAS-D-SIH4 0 - 20 ppm ± 2 years Sulphur Dioxide (SO CGAS-D-SO2 0 - 20 ppm ± 2 years...

  • Page 17: Dual Channel Gas Sensor Options

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual PID Sensors Part Numbers Range TVOC CGAS-D-SPL 0 - 30 ppm usage / application TVOC CGAS-D-SPH 0 - 300 ppm dependent Infrared Sensors Part Numbers Range CGAS-D-CO2-5K 0 - 5,000 ppm Carbon Dioxide (CO ±...

  • Page 18: Calibration Extending Firmware (Cef) And Sensor Aging

    0 - 20 ppm 4.5 Calibration Extending Firmware (CEF) and Sensor Aging The cGas Detector with integral electrochemical sensor(s) have been programmed with our CEF. This rmware takes into consideration the aging of the electrochemical CO and NO sensors so that less frequent calibrations are required in less-critical applications such as parking garages.

  • Page 19: Interior System Layout

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual NUMBER FEATURE FUNCTION Secures door to base and allows easy Œ Door Hinge opening and closing LCD display (standard display) • Display Ž Sensor Opening Allows gas di usion into sensor...

  • Page 20: System Operation & Configuration

    6 SYSTEM OPERATION & CONFIGURATION The cGas Detector continuously monitors target gas concentrations on one or two con gured channels. It must be connected to a controller, control panel or BAS / BMS / DDC system; the cGas Detector is not a standalone gas detection system.

  • Page 21: Accessing The Menu With Passcodes

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual The > symbol indicates that you can edit the menu line item. After entering and con rming a value you can either Exit the menu or press the UP button to move to the next item in that menu.

  • Page 22: Display Settings

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 • Selected Channel • Selected Alarm Level 2012 Alarms Menu • Set Alarm Setpoint • Set Alarm Direction (Ascending/Descending) • Set Alarm Hysteresis • Selected Channel • Set Channel Priority •...

  • Page 23: Adjust Display Brightness

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Pressing the UP or DOWN button allows you to scroll through a series of information screens showing the model name, serial number and rmware version; the communication type, ID and baud rate, the gas type and AD counts;...

  • Page 24: Display Or Hide Line 1 And/Or 2

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 ********-CO-********* ********-NO2-******** From the main display, press ENTER. Enter passcode 1014 using the UP button and ENTER button. Enter Password 1014 Press ENTER to access the Display Menu. DisplayMenu...

  • Page 25: Alarm Status, Fault Detection And Communication Failure Noti Cations

    High alarm high The cGas Detector has built in fault detection, and in the event of a problem with the measurement circuitry the transmitter will indicate a fault condition on the display. Normal operation will resume once the fault condition has been corrected.

  • Page 26: Setting Channel Alarm Setpoints, Direction And Hysteresis

    6.5 Setting Channel Alarm Setpoints, Direction and Hysteresis The cGas Detector is con gurable as a one or two channel gas detector and each channel can be con gured with LOW, MID and HIGH gas alarm setpoints in an ascending or descending direction.
  • Page 27 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Combustibles (catalytic) 0 - 100% LEL 10% LEL 15% LEL 20% LEL For a complete list of all sensors please go to: https://www.critical-environment.com/support/faq/suggested-alarm-setpoints An Ascending alarm is used when monitoring a gas that becomes hazardous in increasing quantity.
  • Page 28 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 Press ENTER to access the Alarms Menu. Alarms Menu Press Enter In the Selected Channel menu, con rm the correct channel is showing. Selected Channel If you want to choose a di erent channel, press Enter and use the UP button to scroll to the next channel.

  • Page 29: Enable / Disable Channels

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Alarm Direction >DESCENDING Press the Up button until you see Alarm Hysteresis, con rm the desired value is showing. Alarm Hysteresis 005 PPM CO If you want to change the value, press Enter and use the UP and ENTER buttons to change the value.

  • Page 30: Change Units (Degc Or Degf) Of Temperature Readings

    C or F) of Temperature Readings NOTE: This menu item only applies if the cGas Detector has the -RHT option installed. You can change the factory con gured temperature unit type from Celsius to Fahrenheit (or vice versa) very easily.

  • Page 31: Temperature And/Or Relative Humidity O Set

    The temperature and relative humidity sensors come pre-calibrated from the factory. If you nd that the readings on the cGas Detector are higher or lower than another measurement device, you can adjust the reading by setting an o set value so the reading is more accurate. The Temperature o set value is a number of degrees and the Humidity o set value is a percentage, both in either direction of 0.

  • Page 32: Test Functions

    Detector and the DDC/BAS. You can do the same for relative humidity and temperature if the -RHT option is installed.
  • Page 33 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Test Menu Press Enter In the Selected Channel menu, con rm the correct channel is showing. Selected Channel If you want to choose a di erent channel, press ENTER and use the UP button to scroll to the next value.

  • Page 34: Modbus And Bacnet Configuration

    Reset Device >BACNET Press ENTER and the cGas Detector will power o and on. This will cause a brief interruption in communications if the cGas Detector is on a network. NOTE: If you change the Comm Type, make sure you make the necessary changes to the corresponding MAC, Baud and Instance ID as appropriate.

  • Page 35: Con Guring Modbus® Settings

    • Stop bits = 1 • Parity = none If you are not using the cGas Detector with a CETCI controller but are adding it to an existing system the transmitters may require changes to the default Modbus® settings in order for communication to be successful between devices.

  • Page 36: Change Baud Rate

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 Comm Type Comm MAC MODBUS Press ENTER. Use the UP or DOWN buttons to change the numeric value. Move to the next digit by pressing ENTER. When nished, press ENTER to con rm and again to Exit.

  • Page 37: Modbus® Holding Registers

    If you have speci c requirements, have any questions or require clari cation about the Modbus® holding registers, please contact CETCI for assistance. 7.3 Con guring BACnet® Settings The cGas Detector can be con gured with BACnet® output to communicate with a BAS, DDC or similar control panel. 7.3.1 Change BACnet® MAC Address The factory set default BACnet®...

  • Page 38: Change Bacnet® Instance Id

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 7.3.2 Change BACnet® Instance ID Every device on a BACnet® network must have a unique Instance ID. An Instance ID is the Vendor ID (or Base ID) followed by the device’s MAC address. CETCI’s Vendor ID is 270. If the device’s MAC ID is 100, then the Instance ID would be 270100.

  • Page 39: Bacnet® Pics Information

    7.3.4 BACnet® PICS Information Critical Environment Technologies Canada Inc. (CETCI) has been granted the BACnet® Testing Laboratories (BTL) certi cation for the CGAS Detector Family upon passing the BTL requirements for the BACnet® Smart Actuator (B-SA) designation. To follow is the BACnet® Protocol Implementation Conformance Statement (PICS) information that can also be found on the BACnet®...
  • Page 40 BACnet® Protocol Version/Revision: 14 Product Description: The CGAS Detector product line is a group of customizable two channel gas detectors featuring a range a possible gases and options. The various gases are added to the device using plug and play “smart sensor” boards, which attach to the main board within the enclosure. The main board handles communication back to a controller or building management system via eld con gurable Modbus®...
  • Page 41 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Standard Object Types Supported: An object type is supported if it may be present in the device. For each standard Object Type supported provide the following data: 1. Whether objects of this type are dynamically creatable using the CreateObject service 2.
  • Page 42 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 Device Object BACnet® Property Implementation Conf Code Object_Identi er Object_Name Object_Type R/O=”device” System_Status R/O=”operational” Vendor_Name Vendor_Identi er Model_Name Firmware_Revision Application_Software_Version Location Protocol_Version R/O=1 Protocol_Revision R/O=14 Protocol_Services_Supported Protocol_Object_Types_Supported Object_List Max_APDU_Length_Accepted...
  • Page 43 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Analog Input BACnet® Property Implementation Conf Code Object_Identi er Object_Name Object_Type R/O=”analog input” Present_Value Status_Flags Event_State R/O=”normal” Out_Of_Service R/O=FALSE Units Property_List Description Analog Output BACnet® Property Implementation Conf Code...
  • Page 44 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 Property_List Description Binary Output BACnet® Property Implementation Conf Code Object_Identi er Object_Name Object_Type R/O=”binary-output” Present_Value Status_Flags R/O=”all normal” Event_State R/O=”normal” Out_Of_Service R/O=FALSE Polarity Priority_Array Relinquish_Default Description Data Link Layer Options: BACnet®...
  • Page 45 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Device Address Binding: Is static device binding supported? (This is currently necessary for two-way communication with RYes MS/TP slaves and certain other devices.) Networking Options: Router, Clause 6 - List all routing con gurations, e.g., ARCNET-Ethernet, Ethernet-MS/TP, etc.

  • Page 46: Plug & Play Smart Sensor Replacement

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 If you have speci c requirements, have any questions or require clari cation about the BACnet® PICS information, please contact CETCI for assistance. 8 PLUG & PLAY SMART SENSOR REPLACEMENT A sensor will need to be replaced when it does not have enough sensitivity to respond to a bump test or it repeatedly fails calibration.

  • Page 47: Read From Sensor

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual NOTE: If the second sensor is a CO sensor smart board, it will be shipped with a small plastic short sensor adapter. After removing the foam, insert the short sensor adapter before plugging the CO smart sensor board into the socket.
  • Page 48 This process forces a Write of the calibration and con guration information stored in the main board to the smart board sensor. Every time a change is made on the cGas Detector, the main circuit board Writes the change to the smart sensor board automatically. However, there may be instances when you may want to force Write the changes to the smart sensor board, such as if the memory of the smart sensor board gets corrupted.

  • Page 49: Write To Sensor

    • Carbon dioxide sensors require 99.9% nitrogen (N ) for a true zero. If the cGas Detector has a splash guard you will need to ow the nitrogen for approximately 4 minutes BEFORE you © 2019 All rights reserved. Data subject to change without notice.

  • Page 50: Regulators & Flow

    The proper calibration adapter should be utilized to allow the gas to properly di use around the sensor. The calibration adapter plug for a cGas Detector with an internal sensor without a splash guard is part number CET-7000-CAP. For a cGas Detector with a splash guard, use part number CET-4700-SCC or use the Cal Clip hands free adapter, part number CET-SGC.

  • Page 51: Gas Testing Frequency (Bump Testing)

    ) and Phosphine (PH ) adhere to surfaces such as tubing and splash guards. The cGas Detector can be ordered with a special splash guard if con gured with a sticky gas sensor. When calibrating with sticky gases we suggest using Te on lined tubing so the gas doesn’t adhere to the tubing, reducing the concentration of the ow of gas.
  • Page 52 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 much gas the sensor detects is directly related to the Cal gas setting and the actual concentration of calibration gas used during calibration. From the main display, press ENTER.

  • Page 53: Zero (Null) Calibration

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Carbon Monoxide (CO) 100 PPM Nitrogen Dioxide (NO 5 PPM Combustibles 20% LEL * subject to change when required 9.2.2 Zero (Null) Calibration Before trying to zero toxic gas sensors, zero emissions air or 20.9% volume O (scrubbed of hydrocarbons) should be owed over the sensors.

  • Page 54: Span Calibration

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 Selected Channel >NO2 Press the UP button to nd Calibrate Zero. Calibrate Zero 100 AD Press ENTER if using ambient air or attach the regulator to the cylinder of zero air, insert the calibration adapter into the sensor opening on the front of the enclosure door (refer to Section 9.3.1...
  • Page 55 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual Calibrate Menu Press Enter In the Selected Channel menu, con rm the desired channel is showing. Selected Channel If you want to choose a di erent channel, press ENTER and use the UP button to scroll to the next channel.

  • Page 56: Troubleshooting Calibration

    9.3.2 Zero Fault If the zeroing process fails, the cGas Detector will show a Zero fault. This will happen if the ambient gas readings are at an unacceptable level due to not enough clean air - there is enough residual target gas in the environment or other gases that are interfering with the sensor seeing oxygen.

  • Page 57: Span (Calibration) Fault

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual 9.3.3 Span Fault If the cGas shows a Span fault after trying to calibrate, it is possible that the sensor is dead or the device isn’t seeing the gas (cylinder is empty, regulator or adapter plug is not attached properly, tube is blocked, kinked, etc.).

  • Page 58: Calibrating An Oxygen Sensor

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 9.4 Calibrating an Oxygen Sensor When calibrating an Oxygen sensor, a Span calibration should be done rst, then a Zero calibration. The Zero calibration is done using a cylinder of 99.9% Nitrogen (N ) gas.
  • Page 59 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual The factory default calibration gas concentrations are: SENSOR GAS TYPE CALIBRATION GAS LEVEL Oxygen (O 20.9% VOL Either use a cylinder of 20.9% Oxygen or if you are con dent of the air quality, the oxygen in the breathing environment can be used as a fairly accurate source of span gas (be careful not to exhale in the direction of the Oxygen sensor vent).

  • Page 60: Accessories

    10.2 Calibration Adapter Clip “Cal Clip” (p/n: CET-SGC) To calibrate a cGas Detector with a factory installed splash guard (Option -S), attach the Cal Clip around the splash guard to allow the use of both hands during calibration. The small barb hose tting accommodates standard or Te on tubing of 1/8”...

  • Page 61: Splash Guard For Sticky Gases (Option -Sn)

    Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual NOTE: The Cal Clip is designed to prevent entry or exit of air except via the hose barb tting, therefore it must be removed during normal operation or else the gas readings will not be accurate.

  • Page 62: Metal Protective Guard

    Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 10.4 Metal Protective Guard (p/n: SCS-8000-RSG) The metal protective guard (p/n: SCS-8000-RSG) is made of heavy gauge, galvanized metal and helps protect against abrasive damage, theft and vandalism to the transmitters. The 16-gauge galvanized steel has 13 mm (½...

  • Page 63: Maintenance

    Canada to other countries, including the USA. 11 MAINTENANCE The cGas Detector transmitter requires virtually 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.

  • Page 64: Trouble Shooting

    Display shows “ZERO FAULT” message. The cGas Detector is unable to complete the zeroing (null) process. If using ambient air, make sure there are no contaminants or residual target gas in the air. If using a cylinder of oxygen, use 20.99% volume, scrubbed of hydrocarbons.
  • Page 65 Frequent, unexpected alarm reading reported to BAS/DDC. Check to see if EMI and RF interference is causing the equipment to react this way. Refer to Section 6.5.2 EMI and RF Interference Considerations in the cGas Detector Digital Installation Manual for more information. When calibrating a CO sensor, Calibrate Zero keeps failing or the Calibrate Span passes but the gas level reading keeps climbing.
  • Page 66 Detector Digital Transmitter - Operation Manual Rev. A | 2019.07 cGas cannot communicate with the smart board. Ensure the smart board is installed and installed on the correct Smart Board Fault side (left) if a single channel unit. Otherwise power cycle or replace the sensor smart board.
  • Page 67 Rev. A | 2019.07 cGas Detector Digital Transmitter - Operation Manual NOTES © 2019 All rights reserved. Data subject to change without notice.
  • Page 68 Critical Environment Technologies Canada Inc. Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada Toll Free: +1.877.940.8741 Tel: +1.604.940.8741 Fax: +1.604.940.8745 www.critical-environment.com CGAS-D-20190715-Rev-A © 2019 Critical Environment Technologies Canada Inc. All rights reserved. Data in this publication may change without notice.

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