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Figure 10: home screen after recovery from an error condition
The following table gives an overview over the possible error conditions
and on what to do to remove them.
message
SD card error:
"Card missing?"
"file_fopen"
"mkdir"
"efs_init"
Pulse low error
Pulse high error - diffusion current
Buffer overflow
RH error
EM zero offset
high
Some of the error conditions are rather harmless (e.g. high electrometer
zero offset, high RH error), whereas especially the pulse errors will
interfere with a correct measurement. If you experience frequent errors,
please contact us by email, and send us a description of the error
possible cause
- no SD card inserted
- SD card initialisation
problem
- bad card format
- too high relative
humidity
- device
contamination
does not reach
setpoint
- software loop time
delayed.
- relative humidity is
very high and may
hinder measurement
- high RH
- device
contamination
what to do
- insert SD card
- reboot device
- format SD card
- try measurement with lower
humidity
- contact naneos
- open charger hatch and
clean corona wire as
described in the next
section. If the message
still appears, contact
naneos.
- report error to naneos. You
can still measure with the
device if it only appears
infrequently.
- if possibly, measure at
lower RH (use dryer)
- if possibly, measure at
lower RH (use dryer)
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