Commissioning, Operation - WIKA MHC-1 Mode D'emploi

6. Commissioning, operation

6. Commissioning, operation
WARNING!
Prior to commissioning, the pressure sensor must be subjected to a visual inspection.
Only use the pressure sensor if it is in perfect condition with respect to safety.
6.1 Making the mechanical connection
The sealing faces at the instrument have to be undamaged and
■
clean.
When screwing the instrument in, the force required to do this must
■
not be applied through the casing, but only through the spanner flats
provided for this purpose and using a suitable tool.
The correct torque depends on the dimensions of the process
connection and the gasket used (form/material).
Maximum tightening torque
Process connection
G ¼ A DIN EN ISO 1179-2
(formerly DIN 3852-E)
M14 x 1.5 DIN EN ISO 9974-2
(formerly DIN 3852-E)
7/16-10 UNF-2A
¼ NPT
When screwing in, do not cross the threads.
■
For information on tapped holes and welding sockets, see Technical information IN 00.14 at
■
www.wika.com.
WIKA operating instructions pressure sensor, model MHC-1
Tightening torque
60 Nm
60 Nm
20 Nm
34 Nm
EN
Spanner flats
15