Gasman
Personal Single Gas Monitor
User Manual
M07630
Sep 2015
Issue 11
Instructions specific for use in hazardous
areas
The following instructions apply to equipment
covered by certificate number:
Baseefa04ATEX0383 Flammable Gas
IECEx BAS 05.0038 Flammable Gas
Baseefa04ATEX0384 Oxygen or Toxic Gas
IECEx BAS 05.0039 Oxygen or Toxic Gas
The following information covers all relevant
points listed in clause 1.0.6 of the EHSR’s of
the ATEX directive.
The certification marking is as follows:
1. The equipment may be used in Zones 1
and 2 for flammable versions and Zones 0,
1, and 2 for toxic and oxygen versions, for
Group IIA, IIB, and IIC gases and vapours
for Temperature Classes T1, T2, T3 and T4
2. The equipment is certified for use in
ambient temperatures in the range –20°C
to +65°C (-4 to +149 F). The equipment
should not be used outside these ranges.
3. Compliance with the Essential Health and
Safety Requirements has been assured by
compliance with EN60079-0:2004 + Amds
1 & 2, EN60079-1:2004 and EN6007911:2006, as certified by Baseefa.
Compliance with gas detection performance
standards EN50054, EN50057, EN61779-1,
EN50104 and EN50270 has been certified
by Lloyd’s Register
4. Repair of this equipment and gas sensor
replacement shall be carried out by the
manufacturer or in accordance with the
procedures in the manual and by trained
personnel.
5. If the equipment is likely to come into
contact with aggressive substances, then
it is the responsibility of the user to take
suitable precautions that prevent it from
being adversely affected, which may
compromise the certification level.
6. The rechargeable battery must only be
charged in non-hazardous (safe) areas
by connection to the specified Crowcon
charger.
7. Only the following cell types may be
fitted in the battery compartment of the
non-rechargeable battery pack: CR2 of
the following brands only: Panasonic, GP,
Energiser and Maxell. Do not fit a Duracell
battery.
The cells must only be changed in a non-
hazardous (safe) area.
8. The equipment is not certified for use in
atmospheres containing more than 21%
oxygen.
From the 1st November 2010, EN6007929 part 1 has been harmonised under
the ATEX directive 94/9/EC. Therefore to
comply with the ATEX directive, portable
apparatus sensing flammable gases should
have a functional check with gas before
each day of use. Other testing regimes
may be employed depending on local
circumstances.
Area Classifications: -
Zone 0: An area classified as Zone 0 is an
area in which an explosive mixture
of gas is continuously present or
present for long periods.
Zone 1: An area classified as Zone 1 is likely
to have ignitable concentrations of
flammable gases, vapours or liquids
present under normal operating
conditions.
Zone 2: An area classified as Zone 2 is not
likely to have ignitable concentrations of flammable gases, vapours
or liquids present under normal
operating conditions.
© Copyright Crowcon Detection Instruments
Ltd 2015.
All rights are reserved. No part of the document may be photocopied, reproduced, or
translated to another language without the
prior written consent of Crowcon Detection
Instruments Ltd.
Safety information:
• Read and understand all instructions in
the operation section of this manual
before use.
• Donotsubstitutecomponents asthismay
impair intrinsic safety and invalidate warranty.
• Observe all warnings and instructions
marked on the unit and within this manual.
• Observesitehealthandsafetyprocedures
for gases being monitored and evacuation procedures.
• Understandthe screendisplayand alarm
warnings prior to use.
• If this product is not working properly,
read the troubleshooting guide or contact
your local Crowcon Office or agent..
• Ensurequalifiedservicepersonnelchange
sensors and operating system.
• Ensuremaintenance,service andcalibra-
tion are carried out in accordance with
the procedures in the manual and by
trained personnel.
Gasman
Personal Single Gas Monitor
Contents
Unpacking ...................................1
I. Introduction .................................7
II. Operation ..................................9
III. Batteries .................................14
IV. Alarm indications ...........................16
V. Fixing Accessories ...........................18
VI. Flow sampling .............................19
VII. Maintenance and Calibration .................23
VIII. PC interface and software ...................26
IX. i-module replacement .......................28
X. Specification ...............................30
XI. Accessories and spare parts ...................31
XII. Troubleshooting guide ......................34
Appendix: Limitations of sensors ..................35
Gasman Unpacking
Gasman
Personal Single Gas Monitor
Thank you for purchasing the new Gasman Personal Gas Monitor.
Gasman has redefined portable gas monitoring and will give you years
of unparalleled service and reliability.
Please read the instructions carefully before use. Keep the manual for
future reference.
Unpacking
Remove the Gasman Personal Gas Monitor from the packaging. The
Gasman accessories will be located in the bottom of the box. Check the
contents are complete, you should have:
• Gasman unit with alligator pocket clip;
• A configuration report detailing the sensor installed, alarm
settings and a calibration certificate;
• Calibration flow cap and tubing;
• Usermanual.
Optional battery chargers and other accessories will be packed in a
separate box.
Battery check
The Gasman Personal Gas Monitor has two battery options: Li-ion
rechargeable or non-rechargeable batteries. The label on the back of the
detector will have either NR (non-rechargeable) or R (rechargeable) to
indicate which battery option is within the detector.
Rechargeable units
Gasman uses a Li-ion battery pack and should arrive with sufficient
charge so that the unit can be used straight out the box. However, if
this is the first time you have used the Gasman unit, you may need
to charge the battery to attain the full operating time. (The actual
operating time will depend on the types of sensor installed.) The
flammable Gasman will operate for at least 12 hours on a fully charged
battery.
1
Unpacking Gasman
Warning: rechargeable units
Only charge the rechargeable Gasman Personal Monitor with a Crowcon
Gasman charger. Failure to comply could invalidate safety certification,
warranty and safety; and may result in permanent damage to the unit.
Non-rechargeable units.
Gasman uses a CR2 battery which can be easily field replaced. Ensure
only the correct types of battery are fitted to maintain compliance with
certification (see Battery check on page 1).
Gasman IR CO2 Personal Single Gas Monitor
The Gasman IR CO
for CO
detection. This version of Gasman is not designed or certified
2
for use in a hazardous area, and the safety certification data in Section
personal single gas monitor an infrared gas sensor
2
X is not applicable. Operation and maintenance of the Gasman IR CO
is essentially the same as for other Gasman units but with the following
points to note.
2
CO2 is present in ambient air at a background concentration of just under 400ppm (0.04%). In
any enclosed environment the ambient CO
and if the room is poorly ventilated concentrations well in excess of 1000ppm (0.1%) can
levels in the outdoor air will also be enhanced by any emitted CO2 e.g. from vehicle
occur. CO
2
exhausts or boiler flues venting to atmosphere so it is normal to see fluctuating levels of CO
the display whether indoors or outside.
concentration will increase as a result of respiration
2
2
2
on
Gasman Quickstart guide
Quickstart guide
1. Getting started
Gasman familiarisation
Gas
Gas
Sensor
name
label
Alarm
LEDs
Sounder
outlet
Operator
Button
Operator LCD
Display Screen
Switching on
Gasman requires little setting up. Follow these simple steps to get your
unit ready for use.
1. Ensure the unit is in clean air.
2. Switch on. Press and hold the operator button for approximately 3
seconds until the red LEDs flash.
The operator display screen will light up and
the unit will begin a warm up sequence.
The user should now check the detector
goes through the warm up sequence
detailed below. In the case of any deviations
the Gasman should be returned to your local
Crowcon office or Service agent.
2
HS
3
Quickstart guide Gasman
Gasman warm up sequence
a) The Gasman will demonstrate
the alarm LEDs, sounder,
vibration alerts, and the
Sounder
Alarm test
HS
2
LEDs Alarm test
operator display screen. The
sounder may be silenced by
pressing the button.
Vibrator Alarm test
The Gasman screen will show the following display during the
warm up sequence. This will take approximately 20 seconds.
0.0
OK
ppb
ppm
vv/v
ppm
Note: these screens may differ depending on what sensor is being used.
b) Autozero
If Autozero is enabled (default), the unit will display the Autozero
confirm screen: the display will alternate between ‘ZERO’ and
‘????’. Press the operator button with a single click to confirm
Zero. If the operator button is not pressed within the 10 second
time out, Gasman will proceed directly to Run mode without
performing Zero.
Autozero confirm
ppm
OK
No Autozero
OK
ppm
Screen Icons
OK
AL -1
AL -2
Warm up
Flashing
icon Gasman
running
normally
Alarms
Battery life
OK
Autozero
0.0
4
Gasman Quickstart guide
Confidence signals
In normal Run mode, Gasman will emit a short beep accompanied by a blue LED flash every 10
seconds and the OK icon flashes to show operational health. These confidence signals can be
disabled using the PC software.
2. In the event of an alarm
Alarm signals
In the event of gas concentrations exceeding the alarm thresholds for the
gas being monitored, Gasman will activate the alarm signals.
Alarm signals
The red and blue alarm LEDs
HS
2
ppm
1. When the gas level returns to normal, press the operator button.
This will reset your Gasman unit to normal Run mode. If the gas
level is still within alarm limits, the button will have no effect.
The Gasman alarm is set to latch by default. The unit will still continue in alarm mode even
when the gas level returns to normal, until the button is pressed and the alarm is cleared.
will flash, the sounder will emit
a loud, fast series of beeps, the
internal vibrator alarm will activate.
The operator screen will display
the alarm level and gas reading
alternately.
See the figure to the left.
AL - 1 — Alarm level one
AL - 2 — Alarm level two
3. Switch off unit and storage
Switching off
1. Press and hold the button for 5 seconds until the display shows
OFF. The display will count down to switch off.
5
Quickstart guide Gasman
Storing conditions
In order to optimise sensor performance and lifetime, your Gasman unit
should be stored in a safe, non-hazardous area, at 0-20°C and 20-90%
RH.
4. Additional information
For battery recharging information go to section III.
For fixing accessories go to section V.
For sampling section go to section VI.
For calibration information go to section VII.
For troubleshooting guide go to section XII.
6
Gasman Introduction
I. Introduction
Thank you for purchasing the new Gasman Personal Single Monitor.
Gasman is a portable Single Gas detector, designed to be carried or
worn by individuals working in hazardous environments such as confined
spaces. It is suitable for use in classified hazardous areas. Gasman
monitors a single gas and displays its reading on a display screen. Alarm
warnings are given through a combination of a loud audible alarm, a
bright visual alarm of blue/red flashing LEDs and an internal vibrator.
Gasman can be fitted with a wide range of modular, or plug and play
gas sensors. The sensor carries an intelligent processor which contains
calibration and sensor information.
Gasman is battery operated and is available with rechargeable batteries
or dry cell battery options. The dry cell battery option is only available for
toxics and oxygen Gasman units. A battery charger for single and multiple
Gasman units is available for rechargeable units, see section XI for more
information.
At Crowcon we recognised the need for a reliable and robust personal
monitoring system, which is both small, light and easy to use. Gasman
has a single operator button, and an intelligent user-friendly display with
automatic backlight. The gas level is continuously monitored providing
normal gas readings, peak readings and time weighted averages (TWA).
Gasman is available as a diffusion sampling instrument, see section XI for
sampling accessories. Configuration and data/event logging is handled by
Crowcon Portables PC software, the PC communication link is provided
as a link on the charger interface unit.
Gasman’s compact shape and design makes it comfortable to wear, with
a non-slip grip for better handling. Extra accessories such as pocket clip,
hard hat clip, shoulder strap and chest harness, can be purchased.
Gasman has been designed from top to bottom to bring you a lighter,
compact design with single button operation for ease of use, maintenance
and extreme reliability.
7
Introduction Gasman
i-module gas sensor
Gasman uses unique plug and play i-module sensor technology. Each
sensor unit incorporates its own intelligent processor holding sensor
configuration and calibration data. Different sensors can be purchased,
and once inserted, are immediately ready to run. Flammable units are only
available with rechargeable batteries. Plug and play will ease maintenance
time and cost, and the intelligent modular system will remove the need
to calibrate the sensor. Gasman can be reconfigured by purchasing
additional pre-calibrated i-modules from Crowcon or your local office.
After fitting a new i-module, it is recommended that a gas test is carried
out on the detector before use.
Reliable, anti-shock mechanics and robust housing
The Gasman housing is built from resilient material, giving it strength and
flexibility to withstand the hardest of working conditions, water and dust
tight to IP65 with a non-slip grip. If the unit is dropped, there will be no
disruption of power or function, ensuring reliability and service for years
to come.
Software
The internal software in Gasman has been designed and written in
accordance with the requirement of IEC 61508 to ensure quality and
integrity of operation. Gasman has been designed to give a truly
reliable personal gas monitoring system. The internal circuitry includes
an independent watchdog. The software monitors for any malfunction
within the unit and will display an error warning to the user should they
occur.
8
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