Teledyne First Responder CG Instruction Manual

First Responder CG
User Handbook

Issue 2
07/09/2021
Part Number: 42942
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Copyright © Teledyne Gas Measurement Instruments Ltd 2021

i
COPYRIGHT
This User Handbook is copyright of Teledyne Gas Measurement Instruments
Ltd (GMI) and the information contained within is for use only with the First
Responder CG instruments. Reproduction, in whole or in part, including utilisation
in machines capable of reproduction or retrieval without written permission of
Teledyne GMI is prohibited. Reverse engineering is not permitted.
LIABILITY
Every care has been taken in the preparation of this document, but Teledyne GMI
do not accept any responsibility for errors or omissions and their consequences.
Information in this document is subject to change without notice. This document
does not constitute a specication or basis for a contract. Your statutory rights
under law are not affected.
MODIFICATION NOTICES
Teledyne GMI aim to notify customers of relevant changes in the product
operation and maintain this manual up to date. In view of the policy of continuous
product improvement there may be operational differences between the latest
product and this manual.
This Handbook is an important part of the First Responder CG product. Please
note the following points:
• It should be kept with the instrument for the life of the product.
• Amendments should be attached.
• This Handbook should be passed on to any subsequent owner/user of the
instrument.
• Although every care is taken in the preparation of this Handbook it does
not constitute a specication for the instrument.
SOFTWARE
Software supplied on EPROM or similar device for use in a particular product, may
only be used in that product and may not be copied without the written permission
of Teledyne GMI. Reproduction or disassembly of such embodied programmes
or algorithms is prohibited. Ownership of such software is not transferable and
Teledyne GMI does not warrant that the operation of the software will be error
free or that the software will meet the customer’s requirements.
DISPOSAL ADVICE
When no longer in use, dispose of the instrument carefully and with respect for
the environment. Teledyne GMI will dispose of the instrument without charge
if returned to the factory.

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FIRST RESPONDER CG - USER HANDBOOK
SAFETY
• The instrument must be regularly serviced and calibrated by fully trained
personnel in a safe area.
• Batteries: Alkaline batteries must be exchanged in a safe area and tted
correctly before use. Never use damaged batteries or expose to extreme
heat. See Section 5: OPERATOR MAINTENANCE.
• Only Teledyne GMI replacement parts should be used.
• If the instrument detects gas, follow your own organisation’s procedures
and operational guidelines.
• The combustion chamber is a ameproof assembly and must not be opened
in the presence of a ammable atmosphere.
• First Responder CG instruments are certied as:
Ex ia d IIB T3 Ta = -20oC to +50oC (-4oF to 122oF) .
SIRA 03ATEX2448X II 2G.
UL Class 1 Groups C and D.
• This equipment is designed and manufactured to protect against other
hazards as dened in paragraph 1.2.7 of Annex II of the ATEX Directive
2014/34/EU.
Any right of claim relating to product liability or consequential damage to any
third party against Teledyne GMI is removed if the warnings are not observed.
AREAS OF USE
Exposure to certain chemicals can result in a loss of sensitivity of the ammable
sensor. Where such environments are known or suspected it is recommended
that more frequent response checks are carried out. The chemical compounds
that can cause loss of sensitivity include Silicones, Lead, Halogens and Sulphur.
Do not use instrument in potentially hazardous atmospheres containing greater
than 21% Oxygen. The enclosure material is polypropylene and must not be
exposed to environments which are liable to result in mechanical or thermal
degradation or to damage caused by contact with aggressive substances.
Additional protection may be required in environments where the instrument
enclosure is liable to damage.
STORAGE, HANDLING AND TRANSIT
The batteries in the rechargeable pack contain considerable energy and care
should be taken in their handling and disposal. Battery packs should be removed
if the instrument is stored for longer than 3 months. The instrument is designed
to handle harsh environments. The sensing elements are sealed to IP54 and the
rest of the instrument to IP64. If not subject to misuse or malicious damage, the
instrument will provide many years of reliable service. The instrument contains
electrochemical sensors with a life of 2 years. Under conditions of prolonged
storage the sensors should be removed. The sensor contains potentially corrosive
liquid and care should be taken when handling or disposing of the sensor,
particularly when a leak is suspected.

iii
CONTENTS
COPYRIGHT ..................................................................i
LIABILITY .......................................................................i
MODIFICATION NOTICES.............................................i
SOFTWARE ...................................................................i
DISPOSAL ADVICE .......................................................i
SAFETY......................................................................... ii
AREAS OF USE ............................................................ ii
STORAGE, HANDLING AND TRANSIT........................ ii
INTRODUCTION ........................................1-1
GENERAL INFORMATION..........................2-1
Ranges of Operation.................................................. 2-1
EXT Range (External Semiconductor Sensor),
0 – 10,000 ppm Flammable
(TRAC mode only) .................................................. 2-1
PPM, 0 – 4500 ppm
(CGI mode only)...................................................... 2-2
LEL, 0 – 100%
(CGI and CSM modes only).................................... 2-3
Volume Gas, 0 – 100 %
(CGI, CSM and PURGE modes only) ..................... 2-4

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FIRST RESPONDER CG - USER HANDBOOK
Carbon Monoxide, 0 – 1000 ppm
(CSM mode only) .................................................... 2-4
Hydrogen Sulphide, 0 – 100 ppm
(CSM mode only) .................................................... 2-5
Oxygen, 0 – 25%
(CSM and PURGE modes only).............................. 2-6
Alarms........................................................................ 2-7
General Information ................................................ 2-7
Alarms in CSM Mode .............................................. 2-7
Alarms in TRAC Mode ............................................ 2-8
Datalogging................................................................ 2-8
Automatic Datalogging............................................ 2-8
Manual Datalogging ................................................ 2-9
Construction............................................................... 2-9
Batteries................................................................... 2-10
Alkaline (LR20) Batteries ...................................... 2-10
Filters....................................................................... 2-10
Probe Handle Assembly - Part No. 12481 ............ 2-10
Semiconductor Sensor “Flexi” Probe Assembly - Part
No. 42200...............................................................2-11
Semiconductor Survey “Bellows” Probe Assembly -
Part No. 42444.......................................................2-11
Probe Handle Assembly - Part No. 13561 .............2-11
Liquid Crystal Display (LCD).................................... 2-12
Before Use Checks.................................................. 2-12

v
CONTENTS
OPERATION................................................3-1
Instrument Features................................................... 3-1
Button Panel .............................................................. 3-2
CGI mode .................................................................. 3-2
Switching ON in CGI Mode ..................................... 3-3
Calibration Date Features ....................................... 3-4
Switching OFF......................................................... 3-4
Switching Pump OFF / ON...................................... 3-4
Manual Datalog....................................................... 3-4
Notes on CGI mode: ............................................... 3-5
Summary of CGI Button Operation ......................... 3-5
CSM mode................................................................. 3-6
Switching ON in CSM Mode.................................... 3-6
Calibration Date Features ....................................... 3-7
Switching OFF......................................................... 3-8
Changing Gas Range.............................................. 3-8
Manual Datalog....................................................... 3-8
Acknowledge Alarms............................................... 3-8
Notes on CSM mode:.............................................. 3-9
Summary of CSM Button Operation........................ 3-9
PURGE mode.......................................................... 3-10
Switching ON in PURGE Mode............................. 3-10
Calibration Date Features ......................................3-11
Switching OFF....................................................... 3-12
Changing Gas Range............................................ 3-12

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FIRST RESPONDER CG - USER HANDBOOK
Switching Pump OFF / ON.................................... 3-12
Zero Vol Gas Range.............................................. 3-12
Manual Datalog..................................................... 3-13
Notes on PURGE mode:....................................... 3-13
Summary of PURGE Button Operation................. 3-13
TRAC mode............................................................. 3-14
Switching ON in TRAC Mode................................ 3-14
Calibration Date Features ..................................... 3-16
Switching OFF....................................................... 3-16
Changing Gas Range............................................ 3-16
Zero EXT Range ................................................... 3-16
Manual Datalog..................................................... 3-16
Notes on TRAC mode:.......................................... 3-17
Summary of TRAC Button Operation.................... 3-17
Switching Modes...................................................... 3-18
Connection of Probe................................................ 3-18
Operator Messages / Fault Flags ............................ 3-20
PROBES......................................................4-1
Standard Probe and Handle Assembly ................... 4-1
Semiconductor Sensor (EXT) Probe....................... 4-2
Semiconductor (EXT) Survey Probe (Optional) ...... 4-3
Swan Neck Probe / Bellows Probe (Optional)......... 4-4
OPERATOR MAINTENANCE .....................5-1

vii
CONTENTS
Replacing Alkaline (LR20) Batteries .......................... 5-1
Probe Filter Replacement ......................................... 5-3
Probe Handle Assembly - Part No. 12481 .............. 5-3
Semiconductor Sensor (Flexi) Probe Assembly - Part
No. 42200................................................................ 5-4
Semiconductor Survey “Bellows” Probe Assembly
(Option) - Part No. 42444........................................ 5-6
Probe Handle Assembly (Option) Part No. 13561... 5-9
Flue Probe Coalescing Filter Assembly (Accessory) -
Part No. 42215...................................................... 5-12
CALIBRATION.............................................6-1
Calibration Validity ..................................................... 6-2
ACCESSORIES...........................................7-1
ADDITIONAL INFORMATION .....................8-1
Training...................................................................... 8-1
World Wide Web........................................................ 8-1
TYPICAL OPERATING PARAMETERS ..... A-1
Size ......................................................................... A-2
Weight ..................................................................... A-2
Operating Temperature ........................................... A-2
Humidity .................................................................. A-2
Construction............................................................ A-2

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FIRST RESPONDER CG - USER HANDBOOK
Display .................................................................... A-2
Sampling System .................................................... A-2
Power Source.......................................................... A-3
FIELD CALIBRATION................................. B-1
Selectable Ranges in FCM........................................ B-2
Entering FCM............................................................. B-3
Zeroing the Instrument............................................... B-4
Field Calibration Procedure ....................................... B-5
Quitting FCM.............................................................. B-8
Quit and Save Changes.......................................... B-8
Quit Without Saving Changes................................. B-8
APPLICATIONS ......................................... C-1
Plastic (Solid End) Probe .......................................C-1
Semiconductor Sensor (Flexi) Probe ......................C-3
Semiconductor Survey (Bellows) Probe..................C-6
Bellows Probe .........................................................C-8
Swan Neck Probe ...................................................C-9
Stainless Steel (Flue) Probe ................................. C-11
INDEX.............................................................. I

1-1
1
INTRODUCTION
First Responder CG is the combination instrument for rst
call and emergency response technicians in the gas utilities
industry.
Fig. 1-1 First Responder CG
The instrument is a highly exible, four button portable gas
detector which is designed to provide measurement of LEL
and Volume ammable gas for leak detection and general
safety monitoring. The First Responder also features a
Carbon Monoxide (CO) range, a Hydrogen Sulphide (H2S)
range, and Oxygen (O2), for internal atmosphere monitoring
where odour call response is required.
The First Responder CG also features a Parts Per Million
(PPM) range to increase sensitivity to smaller leaks. This is
achieved using the external (EXT) semiconductor sensor
located at the end of the ‘exi’ probe, that provides a near
instantaneous response in detecting small tting leaks.

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INTRODUCTION
FIRST RESPONDER CG - USER HANDBOOK
This high speed response and sensitivity Semiconductor
Sensor Probe also enables initial external leakage surveys to
be performed in the vicinity of property or pipelines enabling
distribution leaks to be quickly found.
The instrument monitors all gases continuously, providing
all round protection for users.
The First Responder CG is equipped with both audible and
visual alarms and Geiger indications on the EXT ammable
range.
The First Responder CG includes the following ranges:
• 0 to 4,500 ppm to 20 %LEL ammable EXT Range
(External Semiconductor Sensor)
• 0 to 100% LEL
• 0 to 100% Volume Gas
• 0 to 1000 ppm Carbon Monoxide
• 0 to 100 ppm Hydrogen Sulphide
• 0 to 25% Oxygen
The First Responder CG has a variety of user congurable
options. This handbook details the default conguration,
with possible options detailed in italic text.
The First Responder CG instrument and Semiconductor
Sensor Probe are listed by Underwriters Laboratories
and are classied for use in Hazardous Locations Class 1,
Groups C and D.

1-3
INTRODUCTION
FIRST RESPONDER CG - USER HANDBOOK
The First Responder CG is supplied in a carrying case
with a selection of accessories. For a comprehensive list
of accessories supplied with the instrument, and additional
accessories available, see Section 7 ACCESSORIES.
The main features of the instrument are:
• Rugged polypropylene case, sealed to IP54 rating
and suitable for outdoor use.
• Four button operation allowing the user access to
all features.
• LCD with backlighting which displays the current gas
readings (in both digital and analogue forms) together
with operational and status information.
• Audible and visual alarms with alarm levels pre-set.
• Automatic datalogging.
• Directly interfaces with the GMI Automatic Test /
Calibration Unit (GDUnet).

1-4
INTRODUCTION
FIRST RESPONDER CG - USER HANDBOOK

2-1
2
GENERAL INFORMATION
Ranges of Operation
The instrument calibration gas is shown on the instrument
service label.
EXT Range (External Semiconductor Sensor),
0 – 4,500 ppm - 20 %LEL Flammable
(TRAC mode only)
This range displays flammable gas parts per million
(ppm) content up to 4,500pmm, then autoranges to %LEL
(concentration up to 20% LEL). When this range is selected,
EXT for external, is displayed in the top right corner of the
LCD.
A ‘Geiger’ alarm provides assurance that the instrument
is sensing for gas without the need for the operator to
constantly view the display.
When the instrument is switched on, the visual Geiger
indication is operational. To activate the audible Geiger
indication, press (Button Four). Each single press of
(Button Four) will toggle the audible Geiger indication
ON and OFF.
When the audible Geiger is activated, the display changes
between EXT and Aud, as illustrated in Figure 2-1.

2-2
GENERAL INFORMATION
FIRST RESPONDER CG - USER HANDBOOK
Fig. 2-1 EXTernal Range
PPM, 0 – 4500 ppm
(CGI mode only)
This range will measure very low levels of gas and indicates
the PPM concentration of gas in air (45 ppm is equivalent
to 0.1% LEL). This sensitive range will take longer than LEL
and Volume Gas to stabilise.
For methane, when the measurement exceeds 4500 ppm,
the instrument autoranges to LEL.
When the PPM range is selected, PPM is displayed in the
top right corner of the LCD. From 0 to 1000 ppm the digital
display resolves to 5 ppm. From 1000 to 4500 ppm the
digital display resolves to 50 ppm. The analogue bar graph
follows in 200 ppm steps. An example of the PPM display
is shown in Figure 2-2.
The detection principle for this range is a catalytic reaction.
Fig. 2-2 PPM Range

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GENERAL INFORMATION
FIRST RESPONDER CG - USER HANDBOOK
LEL, 0 – 100%
(CGI and CSM modes only)
The LEL range indicates the explosibility of the ammable
gas in the sample. This is displayed as a percentage of the
lower explosive limit (LEL) of the gas. For methane 100% LEL
corresponds to 4.5% Volume methane in Air. Above 100%
LEL, the instrument autoranges to Volume Gas.
When the LEL range is selected, LEL is displayed in the
top right corner of the LCD. From 0 to 10% LEL the digital
display resolves to 0.1% LEL. From 10 to 100% LEL the
digital display resolves to 1% LEL. The analogue bar graph
follows in 4% steps. An example of the LEL display is shown
in Figure 2-3.
The detection principle for this range is a catalytic reaction.
Fig. 2-3 LEL Range

2-4
GENERAL INFORMATION
FIRST RESPONDER CG - USER HANDBOOK
Volume Gas, 0 – 100 %
(CGI, CSM and PURGE modes only)
This range displays the total volume of ammable gas with
respect to air.
When the Volume Gas range is selected, GAS is displayed
in the top right corner of the LCD. The digital display resolves
the signal to 0.1% GAS from 0 to 5%, and 1% GAS from
5% to 100%. The analogue bar graph follows in 4% steps.
Figure 2-4 illustrates the Volume Gas display. The detection
principle for this Volume Gas range is a catalytic reaction
combined with thermal conductivity.
Fig. 2-4 Volume Gas Range
Carbon Monoxide, 0 – 1000 ppm
(CSM mode only)
This range displays the parts per million (ppm) Carbon
Monoxide content up to 999 ppm. When the Carbon
Monoxide range is selected, CO is displayed in the top right
corner of the LCD.
The digital display resolves to 1 ppm CO. The analogue
bar graph follows in 40 ppm steps. Above 1000 ppm, EEEE
is displayed. Figure 2-5 illustrates the Carbon Monoxide
display.
The Carbon Monoxide sensor is subject to the effect of
pressure transients and should be operated at normal
atmospheric pressure conditions. The sensor has a normal
operating life of two years.

2-5
GENERAL INFORMATION
FIRST RESPONDER CG - USER HANDBOOK
Fig. 2-5 Carbon Monoxide Range
Hydrogen Sulphide, 0 – 100 ppm
(CSM mode only)
The Hydrogen Sulphide range measures on the ppm scale.
The digital display resolves to 1 ppm H2S. The analogue
bar graph follows in 4 ppm steps. Above 100 ppm, EEEE
is displayed. Figure 2-6 illustrates the Hydrogen Sulphide
display.
The Hydrogen Sulphide sensor is subject to the effect of
pressure transients and should be operated at normal
atmospheric pressure conditions. The sensor has a normal
operating life of two years.
Fig. 2-6 Hydrogen Sulphide Range

2-6
GENERAL INFORMATION
FIRST RESPONDER CG - USER HANDBOOK
Oxygen, 0 – 25%
(CSM and PURGE modes only)
This range displays the percentage Oxygen content of the
sample. The instrument range is displayed in the top right
corner of the LCD. The digital display resolves the signal to
0.1% O2from 0 to 21%, and 1% O2from 21% to 25%. The
analogue bar graph follows in 4% steps. Figure 2-7 illustrates
the Oxygen display.
The gas level is determined using an electrochemical cell,
which like toxic sensors is sensitive to pressure transients.
The oxygen cell has an expected life of two years.
Fig. 2-7 Oxygen Range