SMALL-Ex® Temperature Measuring

SMALL-Ex® Measuring Instruments are intrinsically safe temperature measuring instruments or as a special version for use as a thermo switch. They can be mounted and used in any position. They are designed for use in systems with fluid or gaseous medium as well as surfaces.

Temperature measurement occurs via a Pt1000 Resistance sensor, which is installed in the housing.
The Round-Design instruments can optional be equipped with an illuminated LCD-display.  The In-Line-Design is not available with a display. For more comfortable use, the measuring instrument can be designed with a stepped sensor. The sensor is in a separate housing and is connected with a cable to the evaluating unit, which can be equipped with a display. In addition, we offer a special version for the use of thermo switch for example at conveyor belt systems.

The mechanical connection can be occurred by a variable adjustable stainless-steel compression fitting with a thread in various sizes or mounting flanges.

When used in systems with a pressure of more than 100 bar, the use of an additional protection tube is necessary.


I Ex ia I Ma
Ex ia I Ma
PO Ex ia I Ma X


BVS 06 ATEX E005 X
IECEx BVS 09.0056X
IECEx TSA 13.0023X
MSHA 18-ISA 150004-0
TC RU C-DE.AA87.B.00727/21

Env. Tempemperature

-50 to +100 °C for Group I
-50 to +80 °C for Group II

Housing material

stainless steel

Gauge accuracy

+/- 1% from end-value (higher accuracy on request)


fluid and gaseous media as well as surfaces

Illuminated Display



+/- °C, +/-°F (other units on request)

Output signal

5 – 15Hz
0/4 – 20mA
* – **V (max. 10 V DC, at min. 7,5V power supply)

Nominal voltage

12V DC (7,5 – 14,0 V DC) 3-wiring technology
16V DC (9,6 – 16,1 V DC) 3-wiring technology
24V DC (14 – 26,6 V DC) 2-wiring technology


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Did you know?

This is what one of our displays for our MAGIN-EX® measurement device series looks like.

We also offer control displays for all our other measurement devices and series.