Ex i Temperature sensors

Ex i, intrinsically safe, for zones 0, 1, 2, 20, 21 or 22

  • The sensor is a standard-type RTD or TC temperature sensor (no ATEX/IECEx requirements)
  • The connection head or box is a standard-type, IP 65-protected head, with a protective earth connection screw (no ATEX/IECEx requirements)
  • The whole circuit must be designed as an intrinsically safe Ex i circuit (cable length, ATEX/IECEx transmitters, ATEX/IECEx barriers).

Investigated applicability

  • EPIC® SENSORS standard RTD types (Pt100) have been investigated for applying in Ex i circuits by an authorized body VTT Expert Services Ltd (nowadays Eurofins Expert Services Oy), and the resulting statement can be downloaded here: STATEMENT VTT-S-08226-13 (pdf).

Manufacturing authorization

  • Even though no certificate for this kind of simple passive apparatus is required by standards, it is sometimes needed for other reasons. Lapp Automaatio Oy has rights to produce Ex i type temperature sensors if needed. This is given in our production quality documents ATEX QAN (pdf) and IECEx QAR (link). Certified Ex i type sensors are produced only on request. 


Update 25.3.2020

Dear customers, 

The Corona virus epidemic still has no significant impact on our performance. Products stored in Finland we continue delivering within the normal delivery times....

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Lapp Automaatio now offers the possibility to install the IoTKey® wireless measurement and remote monitoring system in hazardous industrial environments.

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Our customer service and sales will be closed throughout the Christmas week, December 23-27.
From Monday December 30 onward, it's business as usual again.

Please send your orders to us no later than...

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