Electrical Connection; Dimensions (In Mm) - BUSCH RA 0025 F Manuel D'installation Et De Service

Temperature head transmitter
for 2-wire or 3-wire resistor PT-100, fix adjusted measurement range
2-wire electronic 4...20 mA with PNP-switching output or 3-wire electronic 0...10V
BA0207
+ fix adjusted measurement range
+ temperature measurement range –100°C to +600°C
+ 2-wire-electronic with signal 4...20mA
with free adjustable PNP-switching output
+ 3-wire-electronic with signal 0...10V
+ 12 different standard measurement ranges or
adjustment by customer specification
+ for 2- or 3-wire-PT100
+ failure signal at sensor breakage or short circuit
+ polarity protected
+ Ex approval ATEX
+ connection head (form B) or field housing
+ everlasting screws
+ maintenance free
Application:
The temperature head transmitter, for connection to an temperature dependent resistance PT-100 is a
temperature converter for measuring and monitoring temperatures in a range form –100°C to +600°C
with a measurement span between 20 Kelvin and 700 Kelvin.
Because of the implemented PNP-switching output in the 2-wire device (4...20 mA), separate
evaluation devices are not necessary in many cases.
Function:
The temperature head transmitter KTM can be installed in a connection head (form B) or in a field
housing.
A constant current from an integrated current source is impressed about a 2- or 3-wire PT-100
resistance that is installed in a sensor
This current leads to an voltage drop about the PT-100, that becomes higher or lower, dependent on
the measured medium temperature.
The produced resistance proportional voltage signal is measured by the transmitter and is than
linearized and converted into an constant current signal 4...20mA or a constant voltage signal 0...10V.
The measured voltage signal of the PT-100 is supervised and in the case of sensor breakage a failure
information is produced on to the 4...20mA or 0...10V output signal. The output signal rises in that
case to 21,7 mA or 10,85 V. At a sensor short circuit the signal goes to 3,55 mA resp. 0 V.
In the temperature head transmitter in 2-wire-technic with 4...20 mA, an overload and short circuit
protected PNP-switching output in working current principle is integrated, that can be freely adjusted
by an multi-turn potentiometer.

Electrical connection

3-wire
6
5
4
2 3
-
mA
+
1 2
8,5..40V
1
bei Ex 8,5V..27,3V
signal 4...20mA
with switching output
ACS-CONTROL-SYSTEM GmbH
Lauterbachstraße 57 – 84307 Eggenfelden
Tel: +49 8721/9668-0 – Fax : +49 8721/9668-30
info@acs-controlsystem.de – www.acs-controlsystem.de
RA 0025 - 0100 F Version ATEX Cat. 2 G & Cat. 2(i) G
0870139669 / 100311
Installation and operating instructions
connection PT-100
2-wire
6
strap
5
4
3
V
2
-
8,5..40V
mA
+
+ 1
signal 4...20mA
signal 0...10V
connection supply

Dimensions (in mm)

-
14..35V
housing height: 21 mm
Documentation sur l'équipement de mesure et de sécurité
KTM
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