3 Function and system construction
Temperature head transmitter
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3
Function and system construction
3.1
Function
Function
Electronic monitoring and transformation of an input signal into an analogue output
signal in industrial temperature measurement. The head transmitter is mounted in a
connection head form B or separated from the sensor in field housing.
3.2
Measurement system
Measurement system
Transforming the following input signals:
•
Resistance thermometers (RTD) in 2-,3- or 4-wire connection systems or
•
Thermocouples (TC)
into a scalable analogue output signal (4...20 mA or 20...4 mA).
Fault monitoring of:
•
Measurement range override or undercut
•
Sensor breakage and short circuit
1
Application in hazardous areas is certified to ATEX II 2(1) G and ATEX II 1 GEEx ia IIC
T4/T5/T6.
4
Installation
4.1
Installation conditions
Installation conditions
•
When installing and operating the unit please take note of the allowable ambient tem-
perature (see chapter 10 "Technical Data").
•
When operating in hazardous areas please take note and operate within the limits set
in the certification (see chapter 10 "Technical Data").
Dimensions
The head transmitter dimensions can be found in Chapter 10 "Technical Data".
Installation point
•
Sensor connection head to DIN 43 729 Form B
•
Field housing
Installation angle
There are no limits as to the angle on installation.
1. not for thermocouples (TC)
