Vaisala DMT132 - Manual (Page 59)

Chapter 5 ______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 57
11. When the measurement shown by RHCAL is stable, you can either
apply the correction or exit the procedure:
- To apply the correction, press ENTER one last time to update
the value, type 11 and press ENTER again (assuming you are
using the HMK15 and the LiCl salt).
- To exit the RHCAL command without adjusting the
measurement, press the ESC key and exit this procedure.
12. If you only want to perform a one-point calibration (offset
correction), press the ESC key after entering the correction. The
RHCAL
command will exit, and you can move to step 16.
RH: 10.950116 Ref1 ? 11
Press any key when ready
>
To continue with the calibration of the wet end (gain correction),
press ENTER.
13. Insert the DMT132 in the NaCl salt chamber (75 %RH). Make sure
the salt chamber is sealed and the transmitter sits tightly.
14. Wait for 20 ... 40 minutes for the reading to stabilize. Press ENTER
without typing anything to update the value shown by the RHCAL
command.
RH: 75.251050 Ref2 ?
RH: 75.200621 Ref2 ?
RH: 75.198200 Ref2 ?
15. To apply the correction, press ENTER one last time to update the
value, type 75 and press ENTER again (assumes you are using the
HMK15 and the NaCl salt).
RH: 75.175200 Ref2 ? 75
OK
Saving settings...done
>
The RHCAL command is now finished and both adjustments have
been applied.
16. Use the L command to verify that the new user adjustment
parameters are in use:
>l
17. Use the SEND command to verify that the measurement is OK:
>send
Tdf= -9.33'C
>