Vaisala DMT132 - Manual (Page 61)

Chapter 5 ______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 59
9. Wait for 20 ... 40 minutes for the reading to stabilize. Press ENTER
without typing anything to update the value shown by the CT
command.
T 22.1298 Ref1 ?
T 22.1317 Ref1 ?
T 22.1576 Ref1 ?
10. When the measurement shown by CT 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 the temperature of the reference in degrees
celcius, and press ENTER.
- To exit the CT command without adjusting the measurement,
press the ESC key and exit this procedure.
11. If you only want to perform a one-point calibration (offset
correction), press the ESC key after entering the correction. The
CT
command will exit, and you can move to step 14.
>ct
T 22.1601 Ref1 ? 22
Press any key when ready
To continue with the calibration of the warmer end (gain
correction), press ENTER.
12. Insert the transmitter in the second temperature refence and wait for
20 ... 40 minutes for the reading to stabilize. The measurement
reading for the second point will appear when the measured
temperature is at least 20 ºC warmer than the first reference point.
13. Type the temperature of the second reference point and press
ENTER to apply the correction.
T 44.9847 Ref2 ? 45
OK
Saving settings...done
>
The CT command is now finished and both adjustments have been
applied.
14. Use the L command to verify that the new user adjustment
parameters are in use:
>l
15. Use the SEND command to verify that the measurement is OK:
>send
Tdf= -1.25'C
>