Wafer type intelligent electromagnetic flowmeter

The measuring pricipal is based on Faraday electromagnetic induction rule. A pair of measuring electodes are installed on the tube and are vertical with the axes of piplines and magnetic field direction. When measuring the flow value, the liquid is flowing through the magnetic field vertical to the flowing direction. and the flowing electric liquid generates a voltage directly proportional to the average flow velocity, therefore, the measured flowing liquid is demanded to have am minimum conductivity. The inductive voltage signal is conveyed through two electrodes directly contacting the flow liquid and is sent to the transmitter by cable, and exchange to an integrated output signal. Then accumulated flow and current flow could be displayed on the screen of transmitter after signal treatment and relative calculation. Features: 1,High measuring accuracy. 0.2% or 0.5% 2, Diameter DN25 100 3, Repeatability 0.1% 4, ling material: PTFE, CR, PFA, PU, FEP. 5, Electrode: 316L, HC, Ti,Ta, Pt-Ir Alloy 6, Protection rating: IP65/IP67 MFC series Transmitter performance 1,Display (optional) 2 line display 3 line display 2, Internal totalizer Enables 9-digit totalisation for forward flow total value, reverse flow total value and net flow total value. 3,Programming Supply data before users put an order, as the internal transmitter programs have already been set before leaving our factory. Local hand-held terminals or keypad on transmitter (3 line display)can be used to easily enable the reprogramming of the transmitter if necessary, not effecting the technical performance of the transmitter. Optional units can be selected to flexibly execute pro- gramming of the transmitter. Samples as using different units to display flow value and flow total value. Programming options: RS232 communication (short distance communication); RS485 communication; HART communication; Profibus-PA communication. 4, Power Supply (two types are available) Alternating Current: AC 100 230V, 47 440Hz as standard. Maximum power 20 VA. Direct Current: DC 11 40V, Maximum power 20 VA. 5,Output 1. Analog outputs: For the zero scale, the full scale actively programmable, minimum output 4mA, maximum output 20mA, flow direction optional, outputs completely separated. Output power is more than 15V, Loaded resistance 750Ω. 2. Dual-analog outputs (optional): The same with 1, two analog signal output forward flow and reverse flow separately. 3. Dual-pulse: Forward and reverse flow, 0 1000Hz square wave and fixed width pulse signal; Parameters such as pulse repeat frequency, cut-off frequency and pulse width, etc. are safely pro- grammable. Frequency ranges can be set between 1Hz and 1000Hz, 1Hz for 1 rating; When the insulating protected output transistor switch is electrified, the current should below 150mA, contact voltage below 35V. 4. Double-Alarm All parameters below programmable: High/low flow, empty pipe measurement; error condition; for ward/reverse flow, polarity (always on/always off), analog value within the limited measuring rang, pulse (frequency within the limited measuring rang), pulse cut-off frequency and so on. When the insulating-protected output transistor switch is electrified, the current should below 150 mA, so as to generate 0V; contact voltage below 35V. (Note: not insulated from frequency output) 5. RS232C Data inserting hole(plug)/9-pin D type inserting hole(plug) connects to SIC hand-held configurator or Personal Computer. 6. Rs485 (Optional) Series communication preface. 6,Input: CLS of insulated juncture totalizer (not insulated from pulse and alarm). 7,Input: CLS of insulated juncture totalizer (not insulated from pulse and alarm). 8,Insulation: Between simulation value and pulse/alarm signal and earth, D.C 500V for the insulated voltage. 9,Environmental temperature:Working temperature: -20°C +60°C; Storage temperature: -25°C +60°C 10,External environmental protection: IP65/IP67 separate terminal box and electric part; IP65/IP67 already insulated 11,Configuration: Configuration is registered in a register difficult to loose data (usually 10 years forremaining); Pre-set value users set changeable. 12,Self-diagnostics: The transmitter can configure whether the hardware is working well and can execute error analog such as wire driving error. 13,Flowrate setting: Almost equal to the flow measurement range of maximum velocity (≤20m/s), this range can be changed. 14,Interchangeability:Transmitter is completely changeable with various diameter MFC series sensor, configurable in the working field; Transmitter exchange do not effect system per- formance. 15, Gland sealing: M20*1.5 plastic sealing sleeve as a standard type. Special demand, please indicated. 16,Time invariable: 1 120 seconds all programmable