Solids Flow Meter, Type DLM Solids Flow Feeder, Type DLD: Operating Manual
Solids Flow Meter, Type DLM Solids Flow Feeder, Type DLD: Operating Manual
Solids Flow Meter, Type DLM Solids Flow Feeder, Type DLD: Operating Manual
FH5377GB
Service
Quality and reliability form the basis for Schenck’s corporate philosophy all over the world. That’s why we offer
you an extensive service strategy starting with our stringent quality control through assembly and
commissioning right down to all-round support. We’re always there for you.
Free Helpdesk (Monday through Friday from at least 8 o’clock to 5 p.m. CET)
Service specialists are available to you in every department during our normal office hours for analying
problems and malfunctions.
Heavy Industry Vibrating & Screening Technology
Building materials, mining, foundry, T +49 61 51 - 32 35 25
steel and cement F +49 61 51 - 32 30 96
T +49 61 51 - 32 31 38 vibrating@schenckprocess.com
F +49 61 51 - 32 32 70
heavy@schenckprocess.com
Light Industry
Chemistry, plastics, foodstuffs and pharmaceuticals
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Transport Automation
All industries with logistics processes and trains
T +49 61 51 - 32 24 48
F +49 61 51 - 32 13 69
transport@schenckprocess.com
Note:
The two types of equipment are of identical construction. The different types refer to their mode of
operation as meter or feeder within a total plant.
ATTENTION:
To perform welding work, and in order to protect the load cell, connect the minus pole direct to the
point of welding.
ATTENTION!! Before you remove scale lever, first remove load cell for protection.
IMPORTANT NOTE!!
When setting overload protection, ascertain that load cell bellow is not deformed.
This would make load cell unsuitable for use.
Note : The load limit value applies in conjunction with effectively set
overload protection of scale.
Protected to : IP 67
Nominal temperature : - 10 EC to + 40 EC
Service temperature : - 30 EC to + 70 EC
Reference temperature : + 22 EC
Cable length : 3 or 4 m
An analysis of the material to be weighed might show you the cause of build-up.
NOTE!!
As a rule, use new spring washers or self-locking nuts. Torque of each screw = 30Nm
NOTE!!
Before dismounting scale lever, first remove load cell for protection.
Platform vibrations can entail temporar torsioning, also due to inclined position of scale.
Torsioning introduced via the guide chute can change material flow at transfer to measuring
chute.
The above events occuring in operating state can first be evidenced through monitoring of:
– Start intervals of vibrators, such as big rotating machines, compressors, mills
– Silo levels, wind influence on silo, one-sided exposure to sunlight, etc.
– Changes in platform load, e.g. through access.
Depending on design of pneumatic feed system installed downstream of solids flow meter,
return air is generated which must by all means be exhausted below the meter.
Provide a dust collection system sized in accordance with appropriate regulations, to ensure
that in the operating state the limit values for p < ± 2mbar to -8mbar and for p < ±2mbar
within indicated low-pressure range will not be exceeded.
Avoid overpressure inside meter, which may be evidenced by the egress of dust at the false
air hood, by a sufficient outlet area of the butterfly valve and secure valve position after a
measurement has shown that the limit values are not exceeded.
Prefeeders of standard design, e.g. air slides, must not be dedusted or vented separately or
in addition.
3.4 Pulsations
A pulsating flow of material over the measuring chute causes a load cell signal associated
with vibrations thus reducing its accuracy. With optimized air setting, air slides are perfectly
suitable for pulsation-free material flow.
Starfeeders should feature overlapping chambers.
Vibro-feeders should operate with high frequency.
4.1 Maintenance
n Avoid material build-ups on measuring chute as described above.
n If dust deposits on scale lever keep recurring, do not remove them because this will
change tare weight.
n Remove dust deposits in the scale lever area only if deposits might affect scale lever
mobility.
4.2 Inspection
When inspecting system, perform inspection work below.
SAFETY HINT!!
Before performing inspection work, check to see if system is in stop state and interlocked against
inadvertent start.
NOTE!!
Before dismounting scale lever, loosen flexible sealing membranes for protection. See Item 2.3 !