WIKA WUC-16 - Handbuch (Seite 18)

11384850.07 GB/D 06/2014
18 WIKA Operating instructions / Betriebsanleitung, WUC-1x
7. Starting, operation / 8. Adjustment of zero point GB
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.
8. Adjustment of zero point
The UHP-Transducers are maintenance free. The transducer is factory calibrated and does not normally need field adjust-
ment.
WARNING!
For equipment with Ex nA ic marking, or if operated under nA ic conditions: Do not separate when energised.
For verification and adjustment of the zero point, vent the transducer to zero (0)PSI for gage reference transducers. Use a
0.040" to 0.060" (1 to 1.5 mm) jeweler's screwdriver for adjustment.
Span adjustment is not necessary after zero point correction.
Procedure
1. Restore power to the transducer.
2. Lift the sticker.
3. Adjust the zero point by means of the potentiometer in pressureless state.
Check the zero point by means of a suitable instrument. Clockwise rotation
means an upward zero offset, anti-clockwise rotation means a down ward
zero offset.
4. Push the sticker on.
For further information
+49 9372 132-8976