Vaisala HMDW110 - Manual (Page 51)

16. Remove the probe from the salt jar and reconnect the filter. Plug the hole on
the salt jar.
17. Disconnect the connection cable from the service port.
18. Reconnect the terminal blocks and close the cover.
Two-Point Temperature Calibration and
Adjustment using a Computer
n
Computer with
o
Windows operating system
o Terminal application
o
Free USB port
o Driver for Vaisala USB cable installed
n
Vaisala USB cable for computer connection (219690)
n Two temperature references in range -40 ... +60 °C (-40 ...
+140 °F) with more than 30 °C (86 °F) difference
n
Medium size cross-head screwdriver (Pozidriv)
1. Prepare the HMDW110 series transmitter for a service port connection as
instructed in section Connecting to the Service Port on page 22.
2. Plug in the connection cable 219690 to the service port of the HMDW110
series transmitter, and the other end to a free USB port on your computer.
3. Insert the probe in the first temperature reference.
4. Wait at least 15 minutes for temperature to stabilize.
5. Start a terminal application on the computer and open a new terminal
session to the transmitter. For more information, see Terminal Application
Settings on page 23.
6. Give the errs and send commands to check that there are no active errors,
and that the measurement is working:
errs
0000h
No errors
send
T= 23.1 'C RH= 11.5 %RH Td= -7.3 'C Tw=
9.9 'C h= 28.5
kJ/kg
49
5 Maintenance