2 Safety
2.1 Designated use
The device forms part of a measurement system for monitoring and controlling
liquid levels and is suitable exclusively for the following purposes:
■ Evaluating the sensor signal of an external signal
■ Issuing switching signals via one or more switching outputs to an external
control unit
The measurement system comprises the following parts:
■ Device
– ETS 100 signalling device or
– ETS 200 signalling device or
– ENR 300 level controller
■ Sensor cable
■ External sensor
– Conductive rod-type level probe (NS...) or
– Float switch (MTS...)
The device is designed solely for commercial and industrial use.
The use of the device in explosion hazard areas is prohibited.
Only use the device when in perfect technical condition and without any
unauthorised modifications.
Observe the limit values.
Chapter 3.4 Technical data
Install the device in a cabinet or switch box on a 35 mm bearing rail.
Use devices with a rod-type level probe only in conductive liquids.
Devices with a rod-type level probe can suffer interference from other sensor
systems.
– Do not use any other conductive or capacitive sensor systems in the same
container with a rod-type level probe.
2.2 Residual risks due to electrical energy
Before all work on the device: have the device fully disconnected by a qualified
electrician.
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