Electrical Connection - WIKA DPGS40TA Mode D'emploi

6. Commissioning, operation
Measuring assemblies
The preferred measuring assemblies for various possible applications are speci-
fied in DIN 19216.
The following schematic diagram shows a recommended assembly for liquid
EN
media. As throttling devices, differential pressure transducers should be provided
in accordance with DIN 1952 (issue 07.82), now replaced by EN 5167/1.
The differential pressure lines must be made from metal, their bore must not
be less than 4 mm and the effective length between the valve manifold and the
differential pressure measuring instrument must be at least 500 mm.
In addition, the length and the bore of the
pressure lines should be such that, with
cold lines, the response time of the diffe-
rential pressure measuring instrument is
not more than 5 seconds.
The connections of the differential
pressure lines must be welded, brazed or
screwed using metal sealing elements.
Shut-off valves in differential pressure
lines must only be operated using tools.

6.2 Electrical connection

The electrical connection must only be made by qualified skilled personnel.
■
Connection details and switching functions are given on the product label.
■
Connection terminals are appropriately marked.
The mains connection lines to be provided must be dimensioned for maximum
■
instrument current supply and comply with IEC 227 or IEC 245.
The instruments must be connected to the equipotential bonding of the plant.
■
For performance data see chapter 3 "Specifications"
24 WIKA operating instructions DPGS40TA with component testing
Differential pressure
transducer
(throttling device in the
process line)
Differential pressure
line
Shut-off valves
(valve manifold)
Differential pressure
measuring instrument
DPGS40TA