Vaisala HUMICAP HMP41 User's Guide download pdf (Page 73)

Chapter 5 ______________________________________________________________ Maintenance

VAISALA _______________________________________________________________________ 71

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.

9. Let the readings stabilize and press MODE. The following display

appears:

set

The HMI41 now works only as a terminal for setting the

humidity reading. The numbers on the first line are blinking, and

the numbers on the second line indicate the transmitter reading.

10. You can now set the blinking reading to the correct value (for

example, the equilibrium RH of a salt solution) with the buttons

▲ and ▼. Press ENTER to conclude the adjustment. If the

adjustment has been succesful, the following display appears:

11. The data is now stored in the transmitter memory. If the

adjustment has not been succesful, the following display

appears:

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.

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Vaisala HUMICAP HMP41 User's Guide Page 73