Delivery Time:7 working days after received your payment
Certification:CE/CMC/ISO9001

Electronic Submersible Level Transmitter Electromagnetic Flowmeters

Performance indexes
■ Ambient temperature－２０℃―５０℃
■ Ambient humidity≦９５％
■ Level of protection for case: ＩＰ６８
■ Measuring range of flow rate:０ --- １５m/s
■ Medium conductivity: clean water > ２０ 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: ＳＲＤ,ＧＰＲＳ,ＣＤＭＡ

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

measurement cycle time	50mA excitation life	20mA excitation life
15s	50 months	70 months
14s	46 months	65 months
13s	43 months	60 months
12s	40 months	56 months
11s	36 months	51 months
10s	32 months	46 months
9s	29 months	42 months
8s	25 months	37 months
7s	21 months	32 months
6s	18 months	28 months
5s	14 months	23 months
4s	11 months	18 months
3s	10 months	14 months