11384850.09 EN/DE 02/2019
WIKA Operating instructions / Betriebsanleitung WUC-1x
9
7. Starting, operation
EN
■
Remove the protection cap only just before installation.
■
When mounting the instrument, ensure that the sealing faces of the instrument and the measuring point are
clean and undamaged.
■
Do not scratch or nick the bead. Do not over tighten. Damage to the bead will affect the fitting's performance
and may cause leakage in the system.
■
Screw in or unscrew the instrument only via the flats using a suitable tool and the prescribed torque. The
appropriate torque depends on the dimension of the pressure connection and on the sealing element used
(form/material). Do not use the case as working surface for screwing in or unscrewing the instrument.
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When screwing the transmitter in, ensure that the threads are not jammed.
WARNING!
For transducer with Ex-/FM-marking:
■
Protect the inner diaphragm against any contact with abrasive substances and pressure peaks and do not
touch it with tools. Damage of the diaphragm may result in losing the explosion protection.
■
Observe the technical data for the use of the transducer in connection with aggressive / corrosive media and
for the avoidance of mechanical hazards.
Mechanical Connection
■
Prepare the gas line connections appropriately.
■
You should blow clean all fitting components (such as sealing gaskets, for example) using a clean/filtered gas. Please
refer to the specific technical guides furnished by the gasket manufacturers for additional specifications.
■
You can then remove the protective film, as well as any plastic caps there may be for protecting high-quality fittings.
Face Seal Connections (only WUC-10, WUC-15)
For connections compatible with VCR
®
-fittings:
1. Hold the swivel female face seal / swivel male face seal, mounting part (valve etc.) or case hexagon. Tighten the swivel
female face seal hand-tight and adjust the instrument to the desired position. When tightening or untightening at mounting
parts (valves etc.) or fittings, ensure that the threads do not get jammed.
2. Hold the swivel female face seal with a suitable open-end wrench. Tighten the swivel female face seal / swivel male face
seal or mounting part (valve etc.) by a 1/8 or 1/4 turn (depending on the sealing elements used) beyond the hand-tight
position.
3. Please refer to the specific technical guides furnished by the fitting manufacturers for additional specifications.
4. With that the transducer is mechanically connected. Electrical connection possibilities are described in the following
section.
