Packaging; Starting, Operation; Mechanical Connection - WIKA D-20-9 Mode D'emploi

6. Packaging / 7. Starting, operation

6. Packaging

Has everything been supplied?
Check the scope of supply:
Completely assembled pressure transmitters; with flush version D-21-9 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-21-9 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
Diaphragm test for your safety
It is necessary that before starting the pressure transmitter you test the diaphragm visually, as
this is a safety-relevant component.
 Pay attention to any liquid leaking out, for this points to a diaphragm
!
damage.
 Check the diaphragm visually for any damage (D-21-9).
Warning
 Use the pressure transmitter only if the diaphragm is undamaged.
Use the pressure transmitter only if it is in a faultless condition as far as the

safety-relevant features are concerned.
6 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
GB
7. Starting, operation

Mechanical connection

Sealing
Generally the serial number on the product label applies. If there is no serial number on the product label,
the number on the hexagon will apply.
 Remove the protection cap only just before installation and absolutely avoid any
damage to the diaphragm during installation as well (D-21-9).
 For Model D-20-9 you have to provide for a sealing element; exceptions are instru-
ments with self-sealing threads (e.g. NPT thread).
For Model D-21-9 the sealing ring is included in delivery.
Please refer to our data sheet "Pressure gauge sealing washers AC 09.08" in WIKA's

product catalog Pressure and Temperature Measurement or our website
www.wika.de for details about sealing washers.
When mounting the instrument, ensure that the sealing faces of the instrument and

the measuring point are clean and undamaged.
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.
 When screwing the transmitter in, ensure that the threads are not jammed.
 For tapped holes and welding sockets please see Technical Information IN 00.14 for
download at www.wika.de -Service
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi/Instrucciones de servicio D-2X-9
Product label (example)
Signal
Power supply
Serial No.
S #
Product No.
P #
PIN assignment
Coded manufacture date
GB
7