KROHNE OPTITEMP TCA Ex EN - Manual (Page 27)

ELECTRICAL CONNECTIONS
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OPTITEMP TRA/TCA
www.krohne.com 10/2010 - 4001087001 - Ex AD OPTITEMP TRA/TCA R02 en
4.3 Inputs / Outputs
The electrical connection of an industrial thermometer depends on the type of measuring insert
used. The manufacturer offers measuring inserts with two different sensor types, either with
Pt100 resistor (TR 100) or with thermocouple (TC 100).
4.3.1 Pt100 measuring inserts
A measuring insert with a Pt RTD is connected according to DIN EN 60751 in three different
wiring variants (from left to right: 2, 3 and 4 wire switch):
4.3.2 Thermocouple measuring inserts
Wiring of a thermocouple measuring insert is done in accordance with DIN EN 60584.
TR 100: Wiring (simple design)
1 white
2 red
TC 100: Wiring (simple design)
.book Page 27 Friday, November 19, 2010 2:23 PM