Starting Up The Product; Product Introduction; Product Description; Applications - Grundfos WIO sensor Installation And Operating Instructions Manual

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

Fig. 4 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.

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.
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.
5