Vaisala HMT100 - Manual (Page 37)

Chapter 4 ______________________________________________________________ Maintenance
VAISALA _______________________________________________________________________ 37
9. Let the readings stabilize (may take 30 minutes or more). If you
prefer, you can change the display to show the difference in the
readings. Press
HOLD and a display similar to the following
appears:
RH %
The numbers on the first line indicate how much the transmitter
reading differs from that of the HMI41 reference probe. The
numbers on the second line indicate the reference probe reading.
You can return to the previous display by pressing
HOLD again.
10. When the readings have stabilized, press ENTER to conclude the
adjustment. When ENTER is pressed, the transmitter reading is
corrected to the reference probe reading. If the adjustment has
been succesful, the following display appears:
RH
11. The data is now stored in the transmitter memory. If the
adjustment has not been succesful, the following display
appears:
RH
In this case, perform the adjustment again. Whether the
adjustment was succesful or not, the HMI41 always returns to
display the selected adjustment mode.
12. After succesfully completing the adjustment, turn off the HMI41
and disconnect the cable.
HMI41 as a Terminal
The HMI41 can also be used for visualizing and setting the transmitter's
RH reading manually.
8. A display similar to the one below should be visible:
RH %
The numbers on the first line indicate the transmitter reading,
and the numbers on the second line indicate the HMI41 probe
reading.