11
UK
7 Operation
When the supply voltage has been applied, the unit is in the operating mode� It
performs its evaluation function and provides analogue signals�
►
Check the proper functioning of the sensor�
►
Check analogue current outputs (the current must not be below 4 mA ± 0�2 mA
and not above 20 mA ± 0.2 mA).
7.1 Reference values for the assessment of the measured
values
0���40 % r� h�
no action required (oil is dry)
40���60 % r� h�
watch the oil / installation
60���100 % r� h�
take action
General conditions for
reference values
air temperature 20���25 °C
air humidity approx� 20���70 %
oil temperature approx� 45 °C
r.h. = relative humidity
8 Maintenance, repair, disposal
►
From time to time check the sensor for build-up and damage� If there are any
deposits, carefully clean it by rinsing with isopropanol or fresh oil� After cleaning
the unit must dry for a few minutes before it delivers correct measurements� In
case of damage replace the unit�
►
It is not possible to repair the unit�
►
After use dispose of the unit in an environmentally friendly way in accordance
with the applicable national regulations�
►
In case of returns ensure that the unit is free from soiling, especially of
dangerous and toxic substances� For transport only use appropriate packaging
to avoid damage of the unit�
More information at www�ifm�com
