Geotech G200 - G200 Range Calibration - Best Practice

Page 44 of 61
Operating Manual
www.geotechuk.com
OMG200N Iss.04
© QED Environmental Systems Ltd.
G 2 00 R A N G E
G200 Range Calibration – Best Practice
START
Main menu
select Field
Calibration
Select Option 1
Zero N
2
O or
Zero with Air
Return to
Calibration screen
END
Run the pump
Clean Air Purge
Go on to the
Zero gas
process
Stop the pump
Attach tubing and
calibration gas
cannister
Disconnect gas
cannister
Select Option 3
Span Gas
Zero with N
2
or
Zero with Air?
N
2
Press start
Wait for gas to
stabilise
Completed OK
select Accept
WAIT
Connect gas for
Span Calibration
Gas
Go on to the
Span gas
process
Select gas to
Span
Select Option 1
Edit to your
certified gas
concentration
Press Enter
Air
NOT best
practice
Press start target
value
Wait for screen to
stabilise
(Now value should
be close to Ref
value)
Select Accept Select Accept
Disconnect
tubing
Refit the Soda
Lime Filter
Span another
channel?
NO
YES