Vaisala HMP230 - Manual (Page 73)

HMP230 SERIES
M210225en-B User's Guide
67
When errors have occurred, the transmitter outputs the error code (see Appen-
dix 5 for all error messages):
>ERRS <cr>
E40 f ( all ) out of range
>
8.3. Changing the HUMICAP ® sensor and the filter
Remove the damaged sensor and insert a new one. Handle the sensor by the
plastic socket. DO NOT TOUCH THE SENSOR PLATE. After sensor change
the humidity calibration must be made according to the instructions in Chapter
7.1.3.
Replace a dirty membrane or sintered filter to ensure a maximum lifetime for
the sensor. Do not try to clean the filter. The sensor can be cleaned with dis-
tilled water; if this does not work, replace the sensor.
8.4. Temperature channel adjustment with Pt 100 simulators
Switch the power off and disconnect the wires to the Pt 100 sensor from solder
lugs TP5, TP6 and TP7.
TP6
TP5
TP7
X88
Figure 30 Location of solder lugs TP5, TP6 and TP7 and connector X88
Connect a Pt 100 simulator to connector X88 and set it at the lowest tempera-
ture to be calibrated.
X88
Pt 100
Figure 31 Connecting the Pt 100 simulator to connector X88
Switch the power on.
8.4.1. Adjustment using serial commands
Give command CT, enter the first point value and press <cr>:
>CT <cr>
'C : xx.x Ref1 ? yy.y <cr>
Press any key when ready