Vaisala HMP230 User Manual
Page 41
HMP230 SERIES
M210225en-B
User's Guide
35
6.2.
LED commands
NOTE
If the transmitter has a display/keypad cover, the LED
commands cannot be used.
LED commands can be used to operate the transmitters in the field. These
commands can be used in humidity and temperature calibration and calibration
of the analogue outputs.
Open the housing and press any one of the three press switches. The LEDs
will light up for 2...3 seconds.
OPENED COVER OF THE HMP230
press switches
LEDs
UP
DOWN
ENT
Figure 29
Location of press switches and LEDs
Use the up and down switches (marked with arrows on the printed board) to
find the desired command code and acknowledge it with the ENT switch. The
command codes are (l = lit, ¡ = dark):
¡¡¡¡ (0)
return to normal state
¡¡¡l
(1)
relative humidity calibration
¡¡l¡
(2)
temperature calibration
¡¡ll
(3)
calibration of analogue outputs
l¡¡¡
(8)
relative humidity calibration after sensor change