Kaidi KD QTLD/F Non-full Tube Electromagnetic Flow Meter IP68

QTLD/F non-full tube flow meter is an automatic flow measurement non-full tube flow meter which continuously measures fluid flow in open pipelines (such as half-flow sewage pipelines and large flow pipelines without overflow weir) using the flow-area method. It can measure and display instantaneous flow rate, flow rate, cumulative flow and other data. It is especially suitable for municipal rainwater, waste water, sewage discharge and irrigation water pipes and other measurement places.
QTLD/F type non-full tube flow meter is composed of a flow rate sensor, a water level sensor and a flow display, continuous measurement of the flow rate and level of the fluid in the pipeline, as long as the user input the inner diameter of the circular pipe or the width of the square pipe, non-full tube flow meter will automatically calculate the flow in the pipeline, And automatic display of instantaneous flow, flow rate, cumulative flow and other measurement parameters.

❏It can be used for flow measurement of open non-full pipe;

❏Can be applied to municipal rainwater, waste water, sewage discharge and irrigation water pipes and other places of continuous measurement;

❏Can realize forward and reverse two-way flow measurement;

❏The sensor can work in harsh field and sewage water quality for a long time;

❏Flow measurement accuracy is high, and is not affected by downstream, tributary congestion, blocking and other factors;

❏The straight pipe section of the measurement pipe is required to be 10 times the length of the pipe diameter;

❏Backlight LIQUID crystal display, whether under strong light or at night can clearly read the measurement data;

❏Non-full tube flow meter display and output function is complete, can display instantaneous flow, flow rate, cumulative flow and other data, and has computer communication interface 232, 485 (optional accessories) 

According to the principle of Faraday electromagnetic induction, a pair of detection electrodes are installed on the tube wall perpendicular to the axis of the measuring tube and the magnetic line of force. When the conductive liquid moves along the axis of the measuring tube, the conductive liquid cuts the magnetic line of force to generate an induced electric potential. This induced electric potential consists of two The detection electrode detects that the value is proportional to the flow rate, and its value is:

　　E=KBVD

　　 In the formula:

　　E-induced electric potential;

　　K-coefficient related to magnetic field distribution and axial length

　　B－Magnetic induction intensity;

　　V－The average flow velocity of conductive liquid;

　　D－electrode distance; (measuring tube inner diameter)

The sensor uses the induced potential E as a flow signal and transmits it to the converter. After a series of digital processing by amplifying, transforming and filtering, the instantaneous flow and cumulative flow are displayed by a dot matrix liquid crystal with backlight. The converter has 4-20mA output, alarm output and frequency output, and is equipped with communication interfaces such as RS-485, and supports HART and MODBUS protocols.