CET cGas Detector User manual
Rev. A | 2020.03
www.critical-environment.com
cGas Detector Digital Transmitter
Operation Manual
2© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Digital Transmitter - Operation Manual Rev. A | 2020.03
NEED MORE INFORMATION?
This is the Operation Manual for the cGas Detector Digital Transmitter. If you
would like it in pdf form, please scan the QR code on the back cover page of this
booklet or you can download it from our website:
https://www.critical-environment.com/media/download/manuals/CGAS-D-
Operation-Manual.pdf
There is also an Installation Manual, which includes more information:
• Installation
• Special Considerations for Different Types of Sensors
• Mounting the Transmitter
• Wiring Connections
You can scan the QR code below or download the Installation Manual from our
website:
https://www.critical-environment.com/media/download/manuals/CGAS-D-
Installation-Manual.pdf
© 2020 All rights reserved. Data subject to change without notice. 3
Rev. A | 2020.03 cGas Detector Digital Transmitter - Operation Manual
TABLE OF CONTENTS
1 POLICIES .......................................................................................................6
1.1 Important Note....................................................................................... 6
1.2 Warranty Policy ...................................................................................... 7
1.3 Service Policy ......................................................................................... 8
1.4 Copyrights .............................................................................................. 9
1.5 Disclaimer............................................................................................... 9
1.6 Revisions ................................................................................................ 9
2 INTRODUCTION ...........................................................................................10
2.1 General Description.............................................................................. 10
2.2 Key Features......................................................................................... 11
3 INSTRUMENT SPECIFICATIONS..................................................................12
3.1 Technical Speci!cations...................................................................... 12
3.2 Enclosure Dimensions......................................................................... 16
4 SENSOR SPECIFICATIONS ..........................................................................17
4.1 Single Channel Gas Sensor Options ................................................... 17
4.2 Dual Channel Gas Sensor Options...................................................... 19
4.3 Calibration Extending Firmware (CEF) and Sensor Aging................. 20
5 INSTRUMENT FEATURES ............................................................................21
5.1 Exterior Enclosure................................................................................ 21
5.2 Interior System Layout......................................................................... 22
6 SYSTEM OPERATION & CONFIGURATION...................................................23
6.1 Navigating the Menu Structure ........................................................... 23
6.2 Accessing the Menu with Passcodes................................................. 23
6.3 Display Settings.................................................................................... 25
6.3.1 Adjust Display Brightness ............................................................. 25
4© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Digital Transmitter - Operation Manual Rev. A | 2020.03
6.3.2 Display Configurations................................................................... 26
6.3.3 Display or Hide Line 1 and/or 2.................................................... 27
6.4 Alarm Status, Fault Detection and Communication Failure Alerts ... 28
6.5 Enable / Disable Channels................................................................... 29
6.6 Setting Channel Alarm Setpoints, Direction and Hysteresis ............. 30
6.7 Relay Function (models with Option -RLY) ......................................... 34
6.8 Change Units (oC or oF) of Temperature Readings............................. 35
6.9 Temperature and/or Relative Humidity Offset ................................... 35
6.10 Test Functions.................................................................................... 37
6.10.1 Test Readings / Digital Output ................................................... 37
6.10.2 Test Relay (models with Option -RLY)....................................... 38
7 MODBUS® AND BACNET® CONFIGURATION.............................................39
7.1 Changing Digital Communication Type in the Field........................... 39
7.2 Con!guring Modbus® Settings........................................................... 40
7.2.1 Change Modbus® MAC Address................................................. 40
7.2.2 Change Modbus® Baud Rate....................................................... 41
7.2.3 Modbus® Holding Registers ........................................................ 42
7.3 Con!guring BACnet® Settings............................................................ 42
7.3.1 Change BACnet® MAC Address.................................................. 42
7.3.2 Change BACnet® Instance ID ...................................................... 43
7.3.3 Change BACnet® Baud Rate........................................................ 44
7.3.4 BACnet® PICS Information........................................................... 45
8 PLUG & PLAY SMART SENSOR REPLACEMENT..........................................45
8.1 How to Replace or Add a New Smart Sensor Board.......................... 46
8.2 Read from Sensor ................................................................................ 47
8.3 Write to Sensor..................................................................................... 48
© 2020 All rights reserved. Data subject to change without notice. 5
Rev. A | 2020.03 cGas Detector Digital Transmitter - Operation Manual
9 CALIBRATION ..............................................................................................49
9.1 Calibration Speci•cations.................................................................... 49
9.1.1 Gas..................................................................................................... 49
9.1.2 Regulators & Flow........................................................................... 50
9.1.3 Adapters ........................................................................................... 50
9.1.4 Calibration Frequency .................................................................... 50
9.1.5 Gas Testing Frequency (Bump Testing) ..................................... 51
9.1.6 Sticky Gases..................................................................................... 51
9.2 Calibrating the Internal Sensor(s)....................................................... 51
9.2.1 Set Calibration Gas Value.............................................................. 52
9.2.2 Zero (Null) Calibration .................................................................... 53
9.2.3 Span Calibration.............................................................................. 54
9.3 Troubleshooting Calibration................................................................ 56
9.3.1 Calibration Adapter Plug Doesn’t Fit ........................................... 56
9.3.2 Zero Fault.......................................................................................... 57
9.3.3 Span (Calibration) Fault ................................................................. 57
9.3.4 Zero Override ................................................................................... 57
9.3.5 Span Override .................................................................................. 58
9.4 Calibrating an Oxygen Sensor............................................................. 58
10 ACCESSORIES ...........................................................................................61
10.1 Splash Guard (Option -S)................................................................... 61
10.2 Calibration Adapter Clip ”Cal Clip” .................................................... 61
10.3 Splash Guard for Sticky Gases (Option -SN).................................... 62
10.4 Metal Protective Guard...................................................................... 62
10.5 Calibration Kit..................................................................................... 63
11 MAINTENANCE .........................................................................................64
12 TROUBLE SHOOTING.................................................................................64
6© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Digital Transmitter - Operation Manual Rev. A | 2020.03
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.
This product must be installed by a qualified 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.
This instrument has not been designed to be intrinsically safe. For your safety,
do not use it in classified hazardous areas (explosion-rated environments).
INSTRUMENT SERIAL NUMBER:
______________________________________________________
PURCHASE DATE:
______________________________________________________
PURCHASED FROM:
______________________________________________________
© 2020 All rights reserved. Data subject to change without notice. 7
Rev. A | 2020.03 cGas Detector Digital Transmitter - Operation Manual
1.2 Warranty Policy
Critical Environment Technologies Canada Inc. (the manufacturer) warrants this
gas monitoring instrument, (excluding sensors, battery packs, batteries, pumps
and filters), to be free from defects in materials and workmanship for a period
of two years from the date of purchase from our facility. The sensors have a
warranty period of one year on a pro-rated basis from the date of purchase
from our facility. This warranty is limited to the mechanics of the physical
sensor components and as such, should the sensor become defective within
this warranty period, we will repair or replace it at our discretion. This warranty
does not extend to sensors that have been poisoned by external compounds
such as, but not limited to, extreme gas concentrations, paint fumes, excessive
dust, debris, etc. or to sensors that have been improperly zeroed, calibrated
or altered in any way. If it is determined within 90 days of purchase that a
sensor is malfunctioning or unable to remain calibrated due to no fault of its
placement or treatment, the instrument may be sent back to the factory for a
free calibration service.
The warranty status may be affected if the instrument has not been operated,
calibrated or maintained as per the instructions in the instrument’s Operation
Manual or if the instrument has been abused, damaged or altered in any way.
This instrument is only to be used for purposes stated herein. The manufacturer
is not liable for auxiliary interfaced equipment or consequential damage.
Due to ongoing research, development and product testing, the manufacturer
reserves the right to change specifications without notice. The information
contained herein is based on data considered accurate. However, no warranty is
expressed or implied regarding the accuracy of this data.
All returned goods (whether under warranty or not) must be pre-authorized
by obtaining a return merchandise authorization (RMA) number and shipped
back to the manufacturer by prepaid freight. Contact the manufacturer for an
RMA number and the procedures required for product transport.
8© 2020 All rights reserved. Data subject to change without notice.
cGas Detector Digital Transmitter - Operation Manual Rev. A | 2020.03
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.
Repairs are warranted for 90 days after date of shipment (sensors have
individual warranties). Should your instrument require non-warranty repair, you
may contact the distributor from whom it was purchased or you may contact
CETCI directly.
Prior to shipping equipment to CETCI, contact our office for an RMA #. All
returned goods must be accompanied with an RMA number.
If CETCI is to do the repair work, you may send the instrument, prepaid, to:
Attention: Service Department
Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way
Delta, BC, V4G 1M3
Always include your Returned Merchandise Authorization (RMA) number,
address, telephone number, contact name, shipping / billing information, and
a description of the defect as you perceive it. You will be contacted with a cost
estimate for expected repairs, prior to the performance of any service work.
For liability reasons, CETCI has a policy of performing all needed repairs to
restore the instrument to full operating condition.
Pack the equipment well (in its original packing if possible), as we cannot be
held responsible for any damage incurred during shipping to our facility.
© 2020 All rights reserved. Data subject to change without notice. 9
Rev. A | 2020.03 cGas Detector Digital Transmitter - Operation Manual
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.
Modbus® is a registered trademark of Gould Inc. Corporation.
BACnet® is a registered trademark of American Society of Heating,
Refrigeration and Air Conditioning (ASHRAE).
1.5 Disclaimer
Under no circumstances will CETCI be liable for any claims, losses or damages
resulting from or arising out of the repair or modification of this equipment
by a party other than CETCI service technicians, or by operation or use of the
equipment other than in accordance with the printed instructions contained
within this manual or if the equipment has been improperly maintained or
subjected to neglect or accident. Any of the forgoing will void the warranty.
Under most local electrical codes, low voltage wires cannot be run within the
same conduit as line voltage wires. It is CETCI policy that all wiring of our
products meet this requirement.
It is CETCI policy that all wiring be within properly grounded (earth or safety)
conduit.
1.6 Revisions
This manual was written and published by CETCI. The manufacturer makes
no warranty or representation, expressed or implied including any warranty of
merchantability or fitness for purpose, with respect to this manual.
10 © 2020 All rights reserved. Data subject to change without notice.
cGas Detector Digital Transmitter - Operation Manual Rev. A | 2020.03
All information contained in this manual is believed to be true and accurate at
the time of printing. However, as part of its continuing efforts to improve its
products and their documentation, 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
version of the product the user has. Should you detect any error or omission
in this manual, or should you want to inquire regarding upgrading the device’s
firmware, please contact CETCI at the following address:
Critical Environment Technologies Canada Inc.
Unit 145, 7391 Vantage Way, Delta, BC, V4G 1M3, Canada
Toll Free: +1.877.940.8741
Telephone: +1.604.940.8741
Fax: +1.604.940.8745
Email: [email protected]
Website: www.critical-environment.com
In no event will CETCI, its officers or employees be liable for any direct, special,
incidental or consequential damages resulting from any defect in any manual,
even if advised of the possibility of such damages.
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 offers flexible
customization options with the purpose of meeting your specific application
and budgetary requirements. Ideal for monitoring toxic, combustible and
refrigerant gases in non-hazardous (non-explosion rated) environments such
as enclosed parking facilities, commercial HVAC, greenhouses, recreational
facilities, refrigeration plants, manufacturing plants and other light industrial
applications.
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