Owner manual
9. Select the parameter for adjustment. You can only adjust relative humidity
(RH) or temperature (T). The rest of the parameters are calculated based on
RH๎and T๎and can only be viewed.
10. Check and adjust the environment settings of the reference probe if
prompted by the MI70.
11. The adjustment mode now shows the value of the selected parameter from
both instruments, and a delta parameter (for example, ฮRH) that shows the
difference between the two. Wait at least 15 minutes for the measurement to
stabilize, and for the value of the delta parameter to stop changing.
Stabilization may take a much longer time, depending on factors such as
temperature differences and airflow around the sensors.
12. The difference between the reading should be no greater than the
combined measurement uncertainty of the HMDW110 series transmitter
and the reference probe. Depending on the result, proceed as follows:
o
If the HMDW110 series transmitter is within its accuracy specification,
there is no need to proceed with the adjustment. Select Back and Exit to
leave the adjustment mode.
o
If adjustment is required, continue with the next step.
13. Select Adjust, and then select To same as RH๎(I).
14. The MI70 will ask Do you really want to adjust? Select Yes. MI70 shows
the text Adjustment done and returns to the adjustment mode after a few
seconds. Check the value of the delta parameter to verify that the
adjustment has taken effect.
15. Select Back to return to the parameter selection screen.
16. Select a new parameter for adjustment and proceed as instructed above, or
select Exit to leave the adjustment mode.
17. Turn off the MI70 indicator and disconnect the connection cable from the
service port.
18. Reconnect the terminal blocks and close the cover.
44
5 Maintenance