Samson Media 6 Z, Mounting And Operating Manual

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EB 9527-3 EN 15
Installation
Do not install any control valves that con-
stantly change the operating state of the pro-
cess medium (e.g. manually operated control
valves or temperature regulators) upstream
of the orifice plate assembly. The operating
state must match the conditions calculated
during sizing as closely as possible. It is,
however, favorable to install equipment that
keep the operating state constant (e.g. pres-
sure regulators) upstream of the assembly.
4.4.1 Accessories
We recommend installing a shut-off valve in
the differential pressure lines as well as an
equalizing valve. They can be used to shut
off both differential pressure lines and to by-
pass the indicating unit when checking zero.
4.4.2 Valve block
A valve block comprising three valves (see
Fig. 4) is available. It is bolted directly to the
bottom of the dp cell.
When measuring the flow rate of liquids and
gases, the SAMSON valve block can also be
mounted upside down. As a result, the as-
signment of plus (+) to plus (+) and minus (–)
to minus (–) remains unchanged. Due to this
reverse installation, the pressure gauge con-
nection can no longer be used and must be
sealed with an O-ring and a G ½ - LH screw
cap.
Liquid level measurement Flow rate measurement
Fig. 4: SAMSON valve block
Fig. 5: Arrangement of shut-off valves and
equalizing valves for flow rate
measurement
– +
1
2
Pressure gauge connection
Connection for
measuring lines
To the indicating unit
Hole for leading screw
Equalizing valve
Test connection
Shut-off valve (–)
Shut-off valve (+)
From the measuring point
1 Shut-off valves
2 Equalizing valve