4
The device is ready for operation immediately after switching on with default settings and is
configured and calibrated either with the Evaluation unit MSE 300 or with the configuration software.
The use of a PC is required for commissioning measuring units with DIN Rail evaluation. Freely
definable alarm thresholds for a minimum or maximum alarm are available within the measuring range.
If the relay contact “normally closed” (NC) is used, the sensor is automatically tested for power failure.
The internal error message from the sensor also signals any faults occurring via the relay.
The Evaluation unit provide a 4 ... 20 mA power output as a measuring value output or or as trend
display for the dust load.
If a fault is found during the internal function test, the power output is set to 2 mA.
2. Installation
2.1 Determining the installation site
The best installation position for the sensor in a duct or a pipe is located in an area, in which the
particles undergo a uniform distribution and flow past the sensor at a uniform velocity.
The installation site can be in a horizontal or vertical pipe.
In the best case, the duct or pipe continues upstream and downstream of the installation site
horizontally or vertically and fittings or manifolds, valves or slides have a minimum distance to the
sensor in both directions. (See Fig. 2)
Fig. 1
3 x DN
3 x DN
3 x DN
3 x DN
3 x DN
3 x DN
3 x DN
3 x DN
Fig. 2: Recommended distances to valve, etc. (DN = nominal diameter)
