Mechanical Connection; Electrical Connection - WIKA SL-1 Mode D'emploi

7. Starting, operation
Diaphragm test for your safety
It is necessary that before starting the pressure transmitter you test the diaphragm, as this is
a safety-relevant component.
„ 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.
Warning

Mechanical connection

max.
50 Nm
Sealing
If there is no serial number on the product label, the number on the hexagon will apply.
„ You have to provide for a sealing element; exceptions are instruments with self-
sealing threads (e.g. NPT thread).
„ 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.
6 WIKA Operating instructions/Betriebsanleitung/Mode d'emploi SL-1
Product label (example)
Signal
Power Supply
Serial No.
S #
Product No.
P #
PIN assignment
Coded manufacture date
GB
7. Starting, operation
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

Electrical connection

„ Connect the instrument to earth via the pressure connection.
„ This equipment of protection class 3 is designed for connection to safety low voltages
that are separated from the mains voltage or from a voltage greater than AC 50 V or
DC 120 V. It is preferred to connect it to SELV or PELV electric circuits; alternatively, a
safety measure from HD 60346-4-41 (DIN VDE 0100-410) is recommended.
Alternative for North America: The connection may also be made to „Class 2 Circuits"
or „Class 2 Power Units" according to CEC (Canadian Electrical Code) or NEC (Nati-
onal Electrical Code).
Operate the pressure transmitter with a shielded cable and earth the shield at least
„
on one side of the cable, if the cable is longer than 30 m or if it is run outside of the
building.
Ingress protection per IEC 60529 (The ingress protection classes specified only apply
„
while the pressure transmitter is connected with female connectors that provide the
corresponding ingress protection).
Ensure that the cable diameter you select fits to the cable gland of the connector.
„
Ensure that the cable gland of the mounted connector is positioned correctly and
that the sealings are available and undamaged. Tighten the threaded connection and
check the correct position of the sealings in order to ensure the ingress protection.
„ Please make sure that the ends of cables with flying leads do not allow any ingress of
moisture.
WIKA Operating instructions/Betriebsanleitung/Mode d'emploi SL-1
GB
7