The preferred electromagnetic flowmeter for water conservancy irrigation flowmeter and farmland irrigation flowmeter:
The characteristics of water conservancy irrigation and farmland irrigation: the fluid is basically low temperature, but the composition of the fluid varies greatly, from clean water like spring water to sewage containing a large number of pollutants, the forms of pollutants are different, and there will be floating suspensions. In addition, there may be a lot of solid form of domestic pollutants in the urban sewer pipes, and the characteristics of the fluid are not constant.
Features of electromagnetic flowmeter products
1. Full digital processing, strong anti-interference ability, reliable measurement, high precision, and flow measurement range up to 150:1
2. Ultra-low EMI switching power supply, suitable for a wide range of power supply voltage changes, and good anti-EMI performance.
3. Adopt 16-bit embedded microprocessor, fast operation speed, high precision, programmable frequency low-frequency rectangular wave excitation, which improves the stability of flow measurement and low power consumption.
4. Using SMD devices and surface mount (SMT) technology, the circuit has high reliability.
5. There are no moving parts and no blocking parts in the pipeline, and there is almost no additional pressure loss in the measurement.
6. The range can be modified online according to the actual needs of the user on site.
7. The measurement results have nothing to do with physical parameters such as flow velocity distribution, fluid pressure, temperature, density, viscosity, etc.
8. High-definition backlit LCD display, full Chinese menu operation, easy to use, simple to operate, easy to learn and understand.
9. With standard RS485, 4-20MA, pulse output, Hart (optional) digital communication signal output.
10. It has the function of self-test and self-judgment.
11. Hourly total recording function, recording the total flow in units of hours, suitable for time-sharing metering system
12. There are three totalizers inside, which can display the forward cumulative amount, the reverse cumulative amount and the difference cumulative amount, respectively. There is no power failure inside, and the power failure time can be recorded 16 times.
13. Infrared handheld operator, 115KHZ communication rate, all functions of long-distance non-contact operation converter (optional)
Installation of water conservancy irrigation flowmeter and farmland irrigation flowmeter
1. It should be installed at the lower part and the vertical upward part of the horizontal pipeline, and avoid installing it at the highest point and the vertical downward part of the pipeline;
2. It should be installed at the rising place of the pipeline;
3. Installed in the open discharge pipeline, it should be installed at the lower part of the pipeline;
4. If the pipeline drop exceeds 5m, install an exhaust valve downstream of the sensor;
5. The control valve and shut-off valve should be installed downstream of the sensor, not upstream of the sensor;
6. The sensor cannot be installed at the inlet and outlet of the pump, but should be installed at the outlet of the pump;
7. The way to install the liquid flow meter in the measuring well;