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12-5
Rosemount Tank Radar REX
Chapter 12 Sensor Installation
Installation Manual
308014EN, Edition 4
May 2013
12.2 Water Level Sensor
The Water Level Sensor (WLS) measures the free water level below an
oil surface. It outputs a 4-20 mA signal which is connected to the level
gauge. The WLS can also be equipped with integrated Multiple Spot
Temperature sensors. Up to six temperature sensors can be connected
to a Rosemount TankRadar REX transmitter.
12.2.1 Mechanical Installation
The WLS can be anchored by attaching a weight at the end of the sensor
or by putting a weight on top of it. In the latter case the ring at the end of
the probe can be removed in order to make sure that measurements are
performed as close to the tank bottom as possible.
Figure 12-7. Water Level Sensor with integrated temperature
sensors.
350 mm
Max. filling
level
Active length (L)
Standard: 500 mm
Option: 1000/custom
Recommended distance:
0.5 - 1.5 m
Nuts to adjust
the sensor
position
Weight
wls_installation.eps
4 mA level
20 mA level
Tank Zero Level