EWS Kem Kuppers Intrinsically Safe Power Supply Units

KEM offers a broad selection of measuring principles for this purpose. We develop, produce, and deliver high-quality Gear Flow Meters, Turbine Flow Meters, Helical Flow Meters, and Micro Flow Meters as well as Coriolis Mass Flow Meters worldwide. Specific accessories complement the product range. KEM operates its own calibration laboratory certified according to DIN EN ISO/IEC 17025:2018. Here we intensively test each of our flowmeters before delivering it to the customer.

In the course of effective support and after-sales service, our in-house calibration expertise allows us to meet changing customer requirements for the measuring equipment they are using even years later, offering an optimum solution. The EWS supplies KEM pickups installed in hazardous areas and transmits the output frequency of these pickups.

The input and output circuits of the EWS are galvanically isolated. The EWS must be installed outside hazardous areas. An intrinsically safe supply circuit 12 V to supply intrinsically safe KEM pickups installed in hazardous areas in three wire technique. Two intrinsically safe signal input circuits ATEX II (2)G [EEx ia] IIC to connect pickups as per DIN 19234 (NAMUR) in the two-wire technique and for the connection of active and passive pickups. LEDs will indicate short circuits and line breakage.

Features :

  • Frequency doubling and detection of rational direction
  • Failure signaling relay for NAMUR mode

Specifications :

Technical Data :

  • Outputs:
    • Open-Collector
    • PLC output active 24 V
    • NAMUR DIN 19234

Further Technical Data :

Ambient Temperature :

0 °C up to +50 °C [+32 °F up to +122 °F]

Ingress Protection Housing :


Housing :


Dimensions :

l = 70 mm, w = 45 mm, h = 115 mm and 125 mm with option SR

Installation :

Mounting rail DIN EN 50022-35 or wall mounting

Terminals :

Electric shock hazard protection as per VDE 0106/100

Wire Size :

Max 2 × 2.5 mm²

Weight :

350 up to 450 g

Download Datasheet: EWS Kem Kuppers Intrinsically Safe Power Supply Units

Reference: www.kem-kueppers.com

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