Mounting Instructions - WIKA A2G-70 Mode D'emploi

6. Commissioning, operation
Connection diagram for output 4 ... 20 mA (option)
Note
If only the humidity output is used, U
U 15 ... 24 V= (rF/rH) and the temperature output "GND / Temp Out 4 ... 20 mA"
B
must be bridged to GND of the voltage supply.

Mounting instructions

Max. air velocity 10 m/s
Notes for users
Due to air circulation, dirt and dust particles might occur on the sintered
filter that protects the sensors; these particles might impair the sensor
function. After dismounting the filter, it may be cleaned by blowing it out
using oil-free and filtered compressed air, ultrapure air or nitrogen or
washing it using distilled water. Filters that are too heavily soiled should
be replaced.
Do not touch the delicate humidity sensors as this voids warranty.
If used in aggressive gas atmospheres, an early recalibration or replace-
ment of the humidity sensors might be required. Such a recalibration or
possible sensor replacement is not covered by warranty.
WIKA operating instructions air2guide model A2G-70
U B 15-24 V=
GND / Temp Out 4-20 mA
U B 15-24 V=
GND / rF/rH Out 4-20 mA
15 ... 24 V= (temp.) must be bridged to
B
GB
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