Owner manual
12. Select Ready, and use the arrow buttons to enter the correct RHvalue of
the salt jar. Select OKwhen done.
13. 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.
14. Select Back to return to the parameter selection screen, and Exit to leave
the adjustment mode.
15. Remove the probe from the salt jar and reconnect the filter. Plug the hole on
the salt jar.
16. Turn off the MI70 indicator and disconnect the connection cable from the
service port.
17. Reconnect the terminal blocks and close the cover.
Two-Point Humidity Calibration and Adjustment
using a computer and a HMK15 Humidity
Calibrator
n Computer with
o
Windows operating system
o
Terminal application
o
Free USBport
o
Driver for Vaisala USB cable installed
n Vaisala USB cable for computer connection (219690)
n Vaisala HMK15 Humidity Calibrator with LiCl (11 %RH) and
NaCl (75 %RH) salt solutions prepared.
Other solutions may be used, but the difference between the
two points must be ≥ 30 %RH. Additionally, one solution must
be < 50 %RH,and the other must be > 50 %RH.
n Medium size cross-head screwdriver (Pozidriv)
If you have changed the HUMICAP
®
humidity sensor of the
transmitter, perform the procedure below so that you use the
FCRHcommand instead of the CRHcommand.
1. Prepare the HMDW110 series transmitter for a service port connection as
instructed in section Connecting to the Service Port on page22.
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5 Maintenance