WIKA O-10 Manual De Instrucciones página 16

6. Commissioning, operation
Seal
Correct sealing of the process connec-
tions with parallel threads
made using suitable flat gaskets, sealing
GB
rings or WIKA profile sealings.
The sealing of tapered threads (e.g.
NPT threads) is made by providing the
thread with additional sealing material
such as, for example, PTFE tape (EN
837-2).
For further information on sealings see WIKA data sheet AC 09.08 or under www.wika.com.
6.2 Electrical mounting
The instrument must be earthed via the process connection.
■
The power supply for the pressure transmitter must be made via an energy-limited electrical circuit
■
in accordance with section 9.3 of UL/EN/IEC 61010-1 or an LPS to UL/EN/IEC 60950-1 or class 2 in
accordance with UL1310/UL1585 (NEC or CEC). The power supply must be suitable for operation
above 2,000 m should the pressure transmitter be used at this altitude.
Select a cable diameter that matches the cable gland of the connector. Make sure that the cable
■
gland and sealings are assembled correctly and that they are undamaged.
Protect the cable end from humidity, which otherwise might intrude into the instrument.
■
The required venting for instruments with Metri Pack series 150 connection is realised via the
■
connector. Therefore, permanent pressure compensation via the mating connector must be
ensured.
16
Parallel threads
must be

per EN 837
WIKA operating instructions pressure transmitter model O-10
per DIN 3852-E


Tapered threads
NPT, R and PT