Crowcon Gasman User manual
Gasman
Personal Gas Monitor
User Manual
M07630
October 2008
Issue 7
Safety information:
• Read and understand all instructions
in the operation section of this manual
before use.
• Do not substitute components as this may
impair intrinsic safety and invalidate war-
ranty.
• Observe all warnings and instructions
marked on the unit and within this
manual.
• Observe site health and safety procedures
for gases being monitored and evacua-
tion procedures.
• Make sure you understand the screen
display and alarm warnings.
• If this product is not working properly,
read the troubleshooting guide or call
Crowcon.
• Ensure qualified service personnel change
sensors and operating system.
• Ensure maintenance and calibration are
carried out in accordance with the proce-
dures in the manual.
Instructions specific for use in hazardous
areas
The following instructions apply to equipment
covered by certificate number:
Baseefa04ATEX0383 Flammable Gas
Baseefa04ATEX0384 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.
1. The certification marking is as follows:
2. 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
3. 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.
4. Compliance with the Essential Health and
Safety Requirements has been assured
by compliance with EN60079-0:2004
+ Amds 1 & 2, EN60079-1:2004 and
EN60079-11:2006, as certified by Baseefa.
Compliance with gas detection perform-
ance standards EN50054, EN50057,
EN61779-1, EN50104 and EN50270 has
been certified by Lloyd’s Register.
5. Repair of this equipment and gas sensor
replacement shall be carried out by the
manufacturer or in accordance with the
applicable code of practice.
6. If the equipment is likely to come into
contact with aggressive substances, then it
is the responsibility of the user to take suit-
able precautions that prevent it from being
adversely affected, thus ensuring that the
type of protection is not compromised.
7. The rechargeable battery must only be
charged in non-hazardous (safe) areas
by connection to the specified Crowcon
charger.
8. Only the following cell types may be fit-
ted 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.
9. The equipment is not certified for use in
atmospheres containing more than 21%
oxygen.
Area Classifications: -
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 concentra-
tions of flammable gases, vapours
or liquids present under normal
operating conditions.
© Copyright Crowcon Detection Instruments
Ltd 2008.
All rights are reserved. No part of the docu-
ment may be photocopied, reproduced, or
translated to another language without the
prior written consent of Crowcon Detection
Instruments Ltd.
Publication number: M07630
Seventh edition: October 2008
Gasman
Personal Gas Monitor
Contents
Unpacking ...................................1
Quickstartguide...............................3
Introduction..................................7
Operation....................................9
Batteries....................................13
Alarmindications.............................15
Fixingaccessories.............................17
Flowsampling ...............................18
Maintenance and calibration. . . . . . . . . . . . . . . . . . . . .22
PC interface and software.......................24
i-modulereplacement..........................25
Specification.................................27
Accessories and spare parts . . . . . . . . . . . . . . . . . . . . .29
Troubleshooting guide . . . . . . . . . . . . . . . . . . . . . . . . .31
Appendix: Limitations of sensors. . . . . . . . . . . . . . . . . . 32
Gasman Unpacking
1
Gasman
Personal 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 standard pocket clip;
• A configuration report detailing the sensor installed, alarm
settings and a calibration certificate;
• Calibration flow cap and tubing;
• User manual.
Optional battery chargers and other accessories will be packed in a
separate box.
Gasman units ordered with an Alligator clip will receive this clip in place
of the standard pocket clip.
Battery check
The Gasman Personal Gas Monitor has two battery options: Li-ion
rechargeable or non-rechargeable batteries.
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 operat-
ing time will depend on the types of sensor installed.) The flammable
Gasman will operate for at least 12 hours on a fully charged battery
Unpacking Gasman
2
Warning: rechargeable units
Do not attempt to recharge the rechargeable battery with any other
charger other than the Crowcon charger supplied with this unit. Failure
to comply could invalidate safety certification and may result in perma-
nent 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.
Gasman IR CO2Personal Detector
The Gasman IR CO2personal detector uses a newly developed i-module
with an infrared gas sensor for CO2detection. This version of Gasman is
not designed or certified for use in a hazardous area, and the safety cer-
tification data in Section X is non applicable. Operation and maintenance
of the Gasman IR CO2is essentially the same as for other Gasman units
but with the following points to note.
CO2is present in ambient air at a background concentration of just under 400ppm. In any
enclosed environment the ambient CO2concentration will increase as a result of respiration and
if the room is poorly ventilated concentrations well in excess of 1000ppm (0.1%) can occur. CO2
levels in the outdoor air will also be enhanced by any emitted CO2e.g. from vehicle exhausts or
boiler flues venting to atmosphere so it is normal to see fluctuating levels of CO2on the display
whether indoors or outside.
Quickstart guide
1. Getting started
Review your Gasman unit
Switching on your unit
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.
Gasman Quickstart guide
3
Gas
Sensor
Gas
name
label
Operator LCD
Display Screen
Operator
Button
Alarm
LEDs
Sounder
outlet
H S
2
Quickstart guide Gasman
4
Gasman warm up sequence
a) The unit will test the alarm
LEDs, sounder, vibration alerts,
and the operator display
screen. The sounder may
be silenced by pressing the
button.
b) The unit will continue through a warm up sequence as shown
below, this will take approximately 20 seconds.
c) 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.
Run mode
Your unit is now ready to use.
Familiarise yourself with the gas being
monitored in your unit and make sure you understand site health
and safety procedures in the event of alarm conditions.
Sounder
Alarm test
Vibrator Alarm test
LEDs Alarm test
H S
2
OK
vv/v
ppm
ppb
0.0
ppm
OK
OK
ppm
Autozero confirm
OK
No Autozero
Flashing
icon,
Gasman
running
normally
Battery
Screen Icons
Autozero
Warm up
AL - 1
AL - 2 Alarms
0.0
OK
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