User get more from analogue signals
An
IFM Electronic product story
Edited by the Engineeringtalk editorial team
Feb 20, 2006
Programmable, two-channel analogue threshold relay picks up current signals on separate inputs, compares them with set limit values and switches the outputs according to the set switching functions.
A complement to analogue signalling devices is available from IFM Electronic.
With the range of functions available from the AL-3 monitor, the user can get more use from analogue signals by setting switchpoints, comparing or combining values and scaling ranges.
The monitor is a programmable, two-channel analogue threshold relay with two inputs for analogue standard signals (0/4-20mA).
It picks up the current signals on separate inputs, compares them with the set limit values and switches the outputs according to the set switching functions.
The input signals can be scaled suitably to the measuring range of the sensor or transmitter so the measured values are indicated on the front display corresponding to their physical unit.
The AL-3 has an output relay with changeover contact and a transistor output per channel.
The user can choose between the monitoring of values that exceed or fall below the limit values and window function.
In the comparator operating mode, a differential pressure can, for example, be determined from the two input signals, monitored and provided as an analogue value.
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