Electronic Submersible Level Transmitter Electromagnetic Flowmeters

Performance indexes
Ambient temperature
Ambient humidity
Level of protection for case:
Measuring range of flow rate: --- m/s
Medium conductivity: clean water > μs/cm
Range of nominal diameters measurableDN10—DN800
Accuracy grade of sensors: Grade 0.5, grade 0.2
Measurable parameters: instantaneous flow rate, instantaneous flow velocity
Recordable parameters: accumulative total of flow, record of 32 events
Test alarm parameters: Fluid empty-tube test alarm
Exciting current test alarm
Battery capacity test alarm
Calibrated output signal: Flow and impulse per unit volume
Radio communication mode: ,,

Summary

Developed by my company, W802 series electromagnetic water meter
converters are battery powered, capable of being used together with common
electromagnetic flow meters, with the flow rate measurement accuracy up to 0.5
level and 0.2 level. That is to say, a new type of products — electromagnetic
water meter series will be developed simply by connecting a W802
convertor to a common electromagnetic flow meter.

    Requirement for sensors matched

For 20mA excitation, resistance of excitation coil of sensor: 90~110 ohm (two in series)

(it is suggested)

For 50mA excitation, resistance of excitation coil of sensor: 40~50 ohm (two in series)

        Signal intensity of flow of sensor: 50~100μv (1m/s flow rate)

Note:

It must be particularly stated for the parameters of excitation coil resistance when

placing an order!

Instructions:

When calibrating flow, if the sensor coefficient calibrated is close to 1.0000, which means

the signal intensity of flow of sensor measures up to the requirement. A sensor coefficient

greater than 1.0000 means low flow sensitivity, while a sensor coefficient smaller than 1.0000

means high flow sensitivity. Higher flow sensitivity is conducive to improving measurement

stability and accuracy of flow meters.

In principle, the MTF 250mA excitation converter can matches well with any common sensors

of which the coefficient is calibrated below 1.0000.

       Battery life corresponding measurement cycle time