Vaisala GMW90 - Manual (Page 56)

User's Guide _______________________________________________________________________
54 ___________________________________________________________________ M211659EN-B
1-point Adjustment of CO
2
Measurement
The 1-point adjustment adjusts either offset or gain, depending on the
CO
2
concentration.
CCO2 [ONE] [x]
where
x = The reference CO
2
concentration (ppm) that the transmitter
should be showing.
Example:
>pass 9000
>cco2 one 440
OK
2-point Adjustment of CO
2
Measurement
The 2-point adjustment adjusts both offset and gain.
CCO2 [LO | HI] [x]
where
LO = Adjustment point at low concentration (< 700 ppm).
HI = Adjustment point at high concentration (> 700 ppm).
x = The reference CO
2
concentration (ppm) that the transmitter
should be showing.
The 2-point correction is not applied immediately – you must use the
CCO2 SAVE command to store your adjustment to the GM10 module.
If you have entered user adjustments using the CCO2 command but do
not wish to commit them, use the CCO2 CANCEL command.
CCO2 [SAVE | CANCEL]
Example (two point adjustment, low concentration 0 ppm and high
concentration 1000 ppm):
>pass 9000
>cco2 lo 0
OK
>cco2 hi 1000
OK
>cco2 save
OK