WIKA D-11-9 - Handbuch (Seite 3)

2450786.06 GB/D 10/2010
4 WIKA Operating instructions/Betriebsanleitung D-10-9, D-11-9
2450786.06 GB/D 10/2010
5 WIKA Operating instructions/Betriebsanleitung D-10-9, D-11-9
Function: The pressure prevailing within the application is transformed into a standardised
electrical signal through the deflection of the diaphragm, which acts on the sensor element
with the power supply fed to the transmitter. This electric signal changes in proportion to the
pressure and can be evaluated correspondingly.
4. Function / 5. For your safety
5. For your safety
GB
„ Select the appropriate pressure transmitter with regard to scale range,
performance and specific measurement conditions prior to installing and
starting the instrument.
„ Observe the relevant national regulations and observe the applicable stan-
dards and directives for special applications (e.g. with
dangerous media such as acetylene, flammable gases or liquids and toxic
gases or liquids and with refrigeration plants or compressors).
If you do not
observe the appropriate regulations, serious injuries and/or damage
can occur!
„ Open pressure connections only after the system is without pressure!
„ Please make sure that the pressure transmitter is only used within the overload threshold
limit all the time!
„ Observe the ambient and working conditions outlined in section 7 „Technical data”.
„ Observe the technical data for the use of the pressure transmitter in connection with
aggressive / corrosive media and for the avoidance of mechanical hazards.
„ Ensure that the pressure transmitter is only operated in accordance with the provisions i.e.
as described in the following instructions.
„ Do not interfere with or change the pressure transmitter in any other way than described in
these operating instructions.
„ Remove the pressure transmitter from service and mark it to prevent it from being used
again accidentally, if it becomes damaged or unsafe for operation.
5. For your safety / 6. Packaging / 7. Starting, operation GB
6. Packaging
Has everything been supplied?
Check the scope of supply:
„ Completely assembled pressure transmitters; with flush version D-11-9 including pre-
assembled sealings and protection cap.
„ Inspect the pressure transmitter for possible damage during transportation. Should
there be any obvious damage, inform the transport company and WIKA without delay.
„ Keep the packaging, as it offers optimal protection during transportation (e.g. chan-
ging installation location, shipment for repair).
„ Ensure that the pressure connection thread and the connection contacts will not be
damaged.
In order to protect the diaphragm, the pressure connection of the instrument D-11-9 is
provided with a special protection cap.
„ Remove this protection cap only just before installing the pressure transmitter in order
to prevent any damage to the diaphragm or the thread.
„ Keep the protection cap of the pressure connection thread and the diaphragm for
later storage or transport.
„ Mount the protection cap when removing and transporting the instrument.
7. Starting, operation
Required tools: wrench (flats 27 or 41), screw driver
Information about material consistency against corrosion and diffusion can be found in our
WIKA-Handbook, 'Pressure and Temperature Measurement'.
„ Take precautions with regard to remaining media in removed pressure
transmitter.Remaining media in the pressure port may be hazardous or
toxic!
„ Have repairs performed by the manufacturer only.
4. Function
D-10-9: Pressure connection with internal diaphragm (standard version).
D-11-9: Pressure connection with flush diaphragm for highly viscous or solids entrained
media which might clog the pressure port.
!
Warning
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Warning