WIKA Ultra High Purity Transducer (WUC-10, WUC-15, WUC-16)

For applications in hazardous areas, Ex nA ic


  • Semiconductor, flat panel display and photovoltaic industry
  • Ultrapure media and special gas systems (gas supply systems, bulk-gas supply, tank farm installations)

Special Features

  • Compact design
  • ATEX and IECEx zone 2 approval
    Class I, div. 2, groups A, B, C and D
  • Ingress protection IP67 (NEMA 4) with “side access” zero potentiometer
  • Excellent EMC stability
  • Active temperature compensation

Sales Contact (Wika.sales@asyatrafo.com)





The space-saving design of the model WUC-1X provides greater free space in plants and installations.

The WUC-15 and 16 series transducers are notable for their excellent self-draining characteristics. The special sensor connection design eliminates the influence on the sensor signal through loads on the process connections or weld seams.


The high IP67 ingress protection also enables them to be used under harsh conditions on tank plant and speciality gas installations outdoors.

The instrument series has also been developed for use in Ex zone 2. The T6 temperature class classification ensures that even measurements of media with low self-ignition temperatures, such as PH3 (phosphine), do not present a problem.


With cyclic pressure rinsing, high gas throttling values (Joule-Thomson effect) and external operation, high temperature fluctuations can occur. The active temperature compensation detects these changes and minimises their influence. Thus stable measurement is ensured.

Through the sealed “side access” zero point adjustment, the high IP67 ingress protection is permanently maintained. Simple handling and protection from unintentional adjustment is ensured.

The wetted parts consist of SEMI F20-compliant 316L stainless steel and a special 2.4711 / UNS R30003 thin-film sensor. Prior to final assembly all wetted parts are electropolished and cleaned using state-of-the-art processes.

Through an individual examination of each transducer it is ensured that the required values for leak tightness, overpressure stability, accuracy and particles are met in accordance with the applicable SEMI™ standards.