Description
The
flow meter parts of GLZ Series Higher Pressure Flow Auto Controller
are made up of impeller, shaft and bearing which has been specially
machined. So it has strong function of fouling prevention to the
waste water in the oilfield. Meanwhile, the impeller bracket can be
easily taken out from the body of the meter, which brings many
conveniences for the meter’s periodical test. The controlling and
executive part of the flow valves is alternating electromotor which
has been passed decelerator device. With manual device and interior
battery, the GLZ can work normally when alternating current is cut
down. And the hand-wheel is so light that the distinguish ability
ratio is high under the function of decelerator device. The
application of advanced electric technology makes the whole
controller the higher stability and anti-jamming
capability.
â…¡. Principle
When it runs
through the controller, the measured liquid will push the rotator,
and the rotation rate of the impeller is directly proportional to
the flow within the definite flow range. The rotation of the
impeller makes the blade close to the sensor on the body in turn,
and causes the magnetic flux passing through the coil to change in
order to produce the pulse signal, which is directly proportional
to the flow. This signal can display the values of total flow and
instant flow.
During the
operation period, the user can set the flow value by keys. The
controller will compare the instant flow value and the set value.
If the difference value exceeds the required value, the controller
will produce the instruction, and drive the electromotor to adjust
the valve by open or close so that the instant flow value
approaches to or equal the set value.
Besides, the controller has the matching function
at some mixture ratio for two or three mediums. During this
process, the controller can collect other flow signals, multiply
the proper ratio to calculate and regulate the required flow (the
flow range should considered) by opening or closing the
valves.
