2. Design and function
2. Design and function
2.1 Description
This resistance thermometer, through a wide variety of process connections, enables
EN
trouble-free connection to many different processes.
3- or 4-wire platinum measuring resistors in accuracy classes A and B per DIN EN 60751
serve as sensors.
Transmitters built into the connection head are capable of making various output signals
available, for example 4 ... 20 mA or HART
2.2 Dimensions in mm
Version with clamp connection
■
6
protocol.
®
L
WIKA operating instructions model TR25 (Ex i)
Connection head
Terminal block,
transmitter (option)
Pipe body
Legend:
M
Neck tube length
N (M
) Neck length
H
L
Insertion length
Ø D
Inner diameter of pipe
i
Ø D
Clamp fitting