Geotech GA5000 - Page 111

GA5000 gas analyser OMGA5KN4.4
 Copyright Geotech Page 111 of 113
features a simple upload and download facility
and is fully compatible with the latest
Microsoft™ operating systems.
This is optional.
Gas channels
The gases that are analysed by the instrument.
Gas velocity
The positional rate of change of the gas.
Measured using the optional anemometer.
General warnings
Displayed throughout the documentation with a
warning symbol. Warning information may
affect the safety of operators.
H
2
Hydrogen
H
2
S
Hydrogen sulphide
H
2
S filter
Filter required for removal of H
2
S.
When the filter material changes colour to a
light grey colour or if H
2
S values are displayed,
then the filter should be replaced.
Hydro-carbons
Organic compound consisting of only hydrogen
and carbon.
In-line water filter
The component used to help protect the
instrument from water ingress.
LCD display
Liquid Crystal Display
LEL
Lower Explosive Limit.
Lower explosive limit of methane in air. 5%
methane in air is the point at which it becomes
explosive. 100% LEL equates to 5% methane.
m/s
Meters per second – measurement of gas
velocity.
m
3
/hr
Meters cubed per hour – volumetric flow rate
measurement.
Main gas read screen
The main analyser screen for normal operations
and all operations are carried out from this
screen.
Material data sheet
Document from which information about a
certain substance can be obtained.
MCERTS certification
MCERTS is the UK Environment Agency's
Monitoring Certification Scheme. The scheme
provides a framework within which
environmental measurements can be made in
accordance with the Agency's quality
requirements. The scheme covers a range of
monitoring, sampling and inspection activities.