WIKA WU-26 - Manual (Page 16)

16 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio, WU-2X
11553678.02 GB/D/F/E 10/2012
Specifications Models WU-20, WU-25 and WU-26
Ex-protection FM Class I (for transducer with FM-marking)
Ignition protection type Nonincendive for Use in Class I, Division 2, Groups A, B, C & D, and Class I, Zone 2,
Group IIC, Hazardous (Classified) Locations
Assembly and packing area Clean room class 5 according to ISO 14644
Packaging Double bagging according to SEMI E49.6
Shock resistance 500 (1.5 ms) according to IEC 60068-2-27
Vibration resistance 0.35 mm (10 - 58 Hz) / 5 g (58.1 - 2000 Hz) according to IEC 60068-2-6
Wiring protection
■ Short-circuit proofness S+ towards U-
■ Reverse polarity protection U+ towards U-
Weight kg Approx. 0.1
7. Starting, operation GB
When designing your plant, take into account that the stated values (e.g.burst pressure, over
pressure safety) apply depending on the material, thread and sealing element used.
Functional test
The output signal must be proportional to the pressure. If not, this might point to a damage of the diaphragm.
In that case refer to chapter 10 „Troubleshooting“.
WARNING!
■ Open pressure connections only after the system is without pressure!
■ Observe the ambient and working conditions outlined in section 7 „Technical data.
■ Please make sure that the transducer is only used within the over load threshold limit at all
times!
CAUTION!
When touching the transducer, keep in mind that the surfaces of the instrument components
might get hot during operation.