IMKO Trime-GW, Operating Instructions Manual

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2.3 Wiring
First of all, connect the probe to the instrument using the black coaxial connection lead. When
doing so, make sure that the serial numbers on the probe, the cable and the instrument are iden-
tical to each other to ensure reliable readings.
As shown in Figure 1 (Page 8), power is supplied via the screw connector block, the product se-
lector-switch connected and the measurement extracted via the analogue output (0(4)..20mA).
The illustration shows how two instruments are connected in cascade. This method significantly
reduces the amount of wiring required if several (up to four) instruments are to be connected.
The two connection ports R/T and COM should also be wired up this point even if no computer
link is planned for the time being. Measurement extraction by PC or connection of a PC for the
purposes of diagnosis can be realised, later on too, by connecting a conversion module SM-23U.
2.3.1.1 Integration into the existing system-electronics
Instead of implementing the TRIME
®
-GW independently for monitoring purposes, it can also be
integrated into existing systems. For example, a programmable logical controller (PLC) can ex-
tract the readings from the current output 0(4)..20mA. The function of the product selector-switch
can also be taken over by another electronic system (e.g. PLC) that has relay outputs. Relay con-
tacts between the connection SW and the inputs S0 to S3 allow product selection as per the fol-
lowing table:
Table 5
Product selection SW – S3 SW – S2 SW – S1 SW – S0
0 open open open open
1 open open open closed
2 open open closed open
3 open open closed closed
4 open closed open open
5 open closed open closed
6 open closed closed open
7 open closed closed closed
8 closed open open open
9 closed open open closed
A closed open closed open
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