Arthur Grillo PFT25 작동 및 설치 지침 - 페이지 12

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OPERATION
5.4 Protection function at high humidity (PFT28)
The PFT28 has a special sensor protection function, which will be activated at a high hu-
midity range.
In case a relative humidity rises to 98% an additional heating element will be activated. The
heating element heats up the sensor, till the humidity drops below 93% of relative humi-
dity. At this point the heating element switchs off automatically. Due to higher current
consumption, we recommmend a voltage supply of minimum 22 Vdc.
6.

Maintenance

The PFT series contains no wearing or consumable parts. Servicing is not required. On
request, Arthur Grillo GmbH offers an annual calibration with factory certificate.
For information, please contact:
Arthur Grillo GmbH
Am Sandbach 7
40878 Ratingen
12
Phone: 0 21 02 - 47 10 22
Fax:
Doc.-no.: PFT_01_EN
0 21 02 - 47 58 82
Issue: 05/2017