Siemens SITRANS F C MASSFLO MASS 2100 Instructions Manual page 17

SITRANS F C MASSFLO
Vertical mounting in pipe
Direction of flow
Valve 0-point adjustment
Vibration
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mass flowmeter type MASS 2100, DI 3 - DI 40
Locate the unit low in the pipe system in order to avoid under-pressure in the sensor and con-
sequent air separation in the liquid.
Static back pressure
Direction of flow
Direction of flow
Valve
To facilitate 0-point adjustment, a valve with good shut-off should always be mounted in connection
with the sensor.
• The sensor should be completely filled with liquid.
• The valve must be closed.
• Wait a few minutes to let the flow become zero.
Locate the flowmeter as far away as possible from components that generate mechanical vibration
in the piping.
Or ensure that there is no direct connection with them e.g. by using flexible connections.
Altenatively, the flowmeter can be located after a bend.
Valve
Valve
Direction of flow
Direction of flow
As far as possible, the liquid should flow up-
wards to make bubble removal easier.
With vertical mounting, a check valve, which
closes on zero flow, must always be installed so
that the liquid cannot flow back and partially
empty the sensor.
The arrow on the sensor indicates positive
(forward) flow direction.
Valve
Valve
Direction of flow
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