Options And Accessories; Handling Instructions - WIKA DELTA-comb 702.03.100 Betriebsanleitung

6. Options and accessories

6. Options and accessories
6.1 Four-way valve manifold
Shut off j - and i process line for disassembling and testing of
measuring instrument without interrupting the process that is running.
Protect the instrument against inadmissible
overpressure loading, such as, for example,
in the case of pressure tests and undefined
operating conditions (also temporary shut
down).
Pressure equalising for zero point check
during working conditions as well as equali-
sation of the pressures at high pressure and
low pressure side during start-up and operation
(with opened pressure equalising valve).
Process line air bleeding for liquid measuring
media and purging the process line for
removing impurities.

6.1.1 Handling instructions

Work sequence to start measuring
1. Open pressure equalising valve (middle valve)
2. Open shut-off valve of the minus media chamber ( i right valve) and
the plus media chamber ( j left valve)
3. Close pressure equalising valve
Work sequence for air bleeding/purging of piping
1. start: Open shut-off valve of the minus ( i ) and plus ( j ) media chamber
Open pressure equalising valve and valve for purging or air bleeding
2. end: Close pressure equalising valve and valve for purging or air bleeding
Procedure at the the end of the measuring operation
(also for partial closing down of the system)
1. Open pressure equalising valve
2. Close shut-off valve of the minus ( i ) and plus ( j ) media chamber
Task list for disassembling of transmitter during working process
1. Open pressure equalising valve
2. Close shut-off valve of the minus ( i ) and plus ( j ) media chamber
3. Open valve for purging or air bleeding
WIKA Operating instructions DELTA-comb with type approval
Pressure
equalising valve
Gauge valve,
high pressure
j
side
Gauge valve, Valve for
low pressure purging or
i
side air bleeding
GB
9