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4. Starting up the product
Startup must be carried out by authorised persons.
Switch on the power supply and check that the signal
is as expected, 4 mA for 0 % water. If the signal is ok,
the system is ready for operation.
5. Product introduction
5.1 Product description
Water-in-oil sensor
Pos.
Designation
1
Steel tube with sensor
2
Screen
3
Cable
5.2 Applications
The WIO sensor measures the water content in the
oil and converts the value into an analog current
signal. The two sensor conductors are for power
supply as well as for carrying the signal to the
measuring device or controller. The sensor measures
the water content from 0 to 20 %. It also sends a
signal if the water content is outside the normal range
(warning), or if there is air in the oil chamber (alarm).
The sensor is fitted in a stainless steel tube for
mechanical protection.
It also has also special operation state, if the sensor
is in air (no oil detected), or the water content is more
than the measurable level (>20%).
5.3 Intended use
The sensor is normally used together with the
Grundfos IO 113 module, but it can also be used
together with other controllers with inputs of 4 to 20
mA.
Operation with standard controllers will miss the
special air detection state (3,5mA output from WIO),
and over 20% water detected state (22mA).
8
3
2
1
Together with the IO 113, the sensor filters the signal
and provides an easy readout of the actual value.
Furthermore, it is possible to set a user-defined
warning limit and calibrate the IO 113 and the sensor
to the oil .
The IO113 gives special warning signal in case of air
detection (blinking yellow indicatior).
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