Signs, Symbols And Abbreviations; Function; For Your Safety - WIKA D-20-9 Mode D'emploi

3. Signs, symbols and abbreviations / 4. Function and additional instructions
. Abbreviations, signs and symbols
Potential danger of life or of
!
severe injuries.
Warning
Potential danger of life or
of severe injuries due to
catapulting parts.
Warning
Potential danger of burns
due to hot surfaces.
Caution
4. Function and accessories
D-20-9: Pressure connection with internal diaphragm(standard version).
D-21-9: Pressure connection with flush diaphragm for highly viscous or solids entrained
media which might clog the pressure port.

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.
Additional Instructions - Programming of D-20-9, D-21-9
Further informations for Progamming of the instruments see www.wika.de - Service
4 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
GB
The product complies with
the applicable European
directives.
Notice, important informa-
tion, malfunction.
FDA Food and Drug Administration

5. For your safety

5. For your safety
 Select the appropriate pressure transmitter with regard to scale range,
!
performance and specific measurement conditions prior to installing and
starting the instrument.
Warning
 Observe the relevant national regulations (e.g.: EN 50178) and observe the
applicable standards 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
 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.

Information about material consistency against corrosion and diffusion can be found in our
WIKA-Handbook, 'Pressure and Temperature Measurement'.
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
GB
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