Vaisala GM70 - Manual (Page 55)

Chapter 11 ______________________________________________ Error Messages
VAISALA __________________________________________________________ 55
CHAPTER 11
ERROR MESSAGES
This chapter lists the error messages of the GM70.
Table 3 Error Messages Table
Error Message Interpretation and Action
Difference too
big The adjustment cannot be made if the difference between the
measured concentration and the given value is more than 20% of
the maximum value of the probe's measuring range. This
message can be caused by a considerable high drifting error of
the probe.
Please, contact Vaisala or send the probe to Vaisala Service, see
sections Technical Support and Product Returns on page 60.
Value too high The reference concentration can be at the highest 110% of the
maximum value of the probe's measuring range.
Make the adjustment by using lower reference gas concentration.
Lower value too
high The lower reference gas concentration shall be less than 20% of
the maximum value of the probe's measuring range.
Make the adjustment by using lower reference gas concentration.
Higher value
too high The higher reference gas concentration shall be at highest 110%
of the maximum value of the probe's measuring range.
Make the adjustment by using lower reference gas concentration.
Values too
close The difference between the reference concentrations shall be at
minimum 20% of the maximum value of the probe's measuring
range.
Make the adjustment by using correct reference gas
concentrations, see above.
CO
2
value too
high
The measured CO
2
concentration is too high for the
measurement range of the probe, or the calibration is not
properly done. The screen goes blank.
Move the probe to a location with less CO
2
, or recalibrate.
Probe error:
Reboot This error can occur when changing the probe while power is on.
Switch off power and connect the probe properly. Switch on