17
WIKA Operating instructions/Betriebsanleitung, WU-2X
11553678.05 EN/DE 02/2019
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 per ISO 14644
Packaging
Double bagging per SEMI E49.6
Shock resistance
g
500 (1.5 ms) per IEC 60068-2-27
Vibration resistance
mm
0.35 mm (10 - 58 Hz) / 5 g (58.1 - 2000 Hz) per IEC 60068-2-6
Wiring protection
■
Short-circuit proofness
S+ vs. U- (short time)
■
Reverse polarity protection
U+ vs. U-
Weight
kg
Approx. 0.1
1) Including non-linearity, hysteresis, zero offset and end value deviation (corresponds to measured error per IEC 61298-2
7. Starting, operation
EN
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.
