Wika 702.03.100 Uživatelský manuál stáhnout pdf (Strana 12)

WIKA operating instructions dierential pressure gauge, model 702.03.10012

2367781.03 06/2013 GB/D/F/E

6. Commissioning, operation

Measuring assemblies

The preferred measuring assemblies for various possible applications are

specied in DIN 19216.

The following schematic diagram shows a recommended assembly for liquid

media. As throttling devices, dierential pressure transducers should be provided

in accordance with DIN 1952 (issue 07.82), now replaced by EN 5167/1.

The dierential pressure lines must be made from metal, their bore must not

be less than 4 mm and the eective length between the valve manifold and the

dierential pressure gauge 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 pressure gauge is not more than 5

seconds.

The connections of the dierential

pressure lines must be welded, brazed or

screwed using metal sealing elements.

Shut-o valves in dierential pressure

lines must only be operated using tools.

Dierential pressure

transducer

(throttling device in the

process line)

Dierential pressure

instrument

(Dierential pressure

gauge DELTA-comb)

Shut-o valves

(valve manifold)

Dierential pressure

line

6.2 Electrical connection

■

The electrical connection must only be made by qualied skilled personnel.

■

Connection details and switching functions are given on the product label.

Connection terminals and earth terminal are appropriately marked.

■

The mains connection lines to be provided must be dimensioned for maximum

instrument power consumption and comply with IEC 227 or IEC 245.

■

The instruments must be connected to the equipotential bonding of the plant.

Performance data (see „Specications“)

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 71 72

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