Complaint
Working principle of electromagnetic flow meter measurement is based on the Faraday law of electromagnetic induction. Measurements of the flow meter tube is lined with insulating material of a non-magnetic alloy spool. Two clicks along the diameter through-wall fixing on the measuring tube. The electrode head is flush with the lining inner surface. Field coil by waves when pulsed excitation by both parties, will be measured perpendicular
to the pipe axis direction produces a magnetic flux density of the magnetic field b. At this point, if you have
some electrical conductivity of fluid flows through the measuring tube, cut magnetic lines of induction electromotive force.
Electromotive force e is proportional to the magnetic flux density B, measure the inside diameter d and the product of the mean velocity v. Electromotive force e (traffic signal) checked out by electrodes and cables to the converter. Converter after the traffic signal will be amplified, to display fluid flow and energy output pulse, analog current signals for flow control and the flow adjustment.
E=KBdv Type: E-- for signal voltage between the electrodes (v)
B-- magnetic flux density (t)
d-- measuring tube diameter (m)
v-- average flow velocity (m/s)
K, d is a constant, due to magnetizing current is constant, b is constant, the E=KBdv, is proportional to the
signal voltage and volumetric flow Q E-. And volume flow rate sensor signal voltage e Q into a linear relationship. Therefore, as long as the measure to determine the flow rate Q, this is the basic operating principle of electromagnetic flowmeter. By E=KBdv today, the measured flow of medium temperature, density, pressure, conductivity, liquid-solid two phase media of liquid and solid ingredients than parameter does not affect the measurement results.
As for the axisymmetric flow flow state as long as it meets (such as laminar or eddying flow) does not affect the measurement results. Thus volume flowmeter Electromagnetic Flowmeter is a real. For manufacturers and users alike, just use plain water after the actual calibration of measuring volume flow of the fluid any other to the point, without the need for human and remediation. This is electromagnetic flowmeter to highlight advantages, is not found in any other flow meters. Measuring tube and block parts of inactivity. So there is little pressure loss and extremely high reliability.
△Chinese and English display modes;
△No mechanical inertia, fast in response, instant pulse flow measurement and good linearity
△Improved measurement accuracy due to introduction of advanced equilibrium electrode design concept;
△Low-frequency square-wave exciting,exciting frequency:1/10 power frequency, 1/16 power frequency, 1/25 power frequency, 1/32 power frequency;
△High-frequency square-wave exciting,exciting frequency:1/2 power frequency(for grouting liquid measure))
△Realize 0-10mA DC and 4-20mA DC current output as well as 5000Hz frequency output and pulse signal output by means of adopting smart transmitter;
△Network function:MODBUS(RS-232C, RS-485), HART and PROFIBUS -DP(Optional);
△No need to add empty pipe measurement function, continuous measurement, fixed value alarm;
△Three integrator totals inside and it could record respectively the forward total, reverse total and difference total
△Recording power turnoff time function, automatically recording the power turnoff time of the instrument system and adding the missing flow;
△Recording gross of hour function to take hour as unit to record flow total; applicable to ladder time metering;
△Infrared hander operating keyboard, remote and non-contact operation of the whole functions of the converter(Optional)
△Could be applied in corresponding explosion proof environments.
