Endress+Hauser iTEMP PCP TMT 181 Betriebsanleitung Seite 25

Function
Measurement
system
Installation
conditions
Installation
3 Function and system construction
3.1 Function
Electronic monitoring and transformation of various input signals 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. Setting up
of the head transmitter is done using a PC and setting up software. The configuration
kit is required for setting up the head transmitter.
3.2 Measurement system
Transforming the following input signals:
• Resistance thermometers (RTD) and resistance sensors
(in 2-,3- or 4-wire connection systems)
• Thermocouples (TC) and
• voltage sensors 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
The head transmitter is set up using a PC and the PC setting up programme together
with the configuration kit. The kit can be obtained as a unit accessory.
Application in hazardous areas is certified to ATEX II 1 G
EEx ia IIC T4/T5/T6.
4 Installation
4.1 Installation conditions
• When installing and operating the unit please take note of the allowable ambient
temperature (see chapter 11: Technical data).
• When operating in hazardous areas please take note and operate within the limits
set in the certification (see chapter 11: Technical data).
Dimensions
The head transmitter dimensions can be found in Chapter 11: 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.
4.2 Installation
For installation proceed as follows:
Installing in a sensor connection head to DIN 43 729 Form B (Fig. 4.1)
• Feed the sensor inset cables (Pos. 5) through the central hole in the head
transmitter (Pos. 4).
• Place the installation springs (Pos. 3) onto the screws (Pos. 2).
• Feed the installation screws (Pos. 2) through the holes in the head transmitter and
the holes in the sensor inset (Pos. 5). Fix both screws using the circlips (Pos. 6).
• Position the head transmitter in the connection head in such a way so that the
current output terminals (terminal 1 and 2) are towards the cable entry gland
(Pos. 7).
• Fix the head transmitter (Pos. 4) and sensor inset (Pos. 5) into the connection head.
[1] not for thermocouples (TC)
Function and system construction
[1]
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