DN150 electromagnetic flowmeter features and purchase points

DN150 electromagnetic flowmeter is a kind of commonly used flow instrument. The product has the advantages of high sensitivity, accurate measurement, and easy operation. It is widely used in many fields. Nowadays, there are many types of electromagnetic flowmeters on the market. How do users choose to purchase them? The following small series will introduce the main points of the purchase of electromagnetic flowmeters in detail, hoping to help everyone.

1, the transmitter diameter selection

Transmitter diameter is usually selected with the piping system and the same diameter. If the parting system is to be designed, the caliber can be selected based on the flow range and flow rate. For electromagnetic flowmeters, flow rates of 2-4 m/s are more appropriate. In special circumstances, such as liquid with solid particles, taking into account the situation of wear, the optional common flow rate ≤ 3m / s, for easy to attach the wall of the fluid, the flow rate can be used is ≤ 2m / s, the specific size of the caliber can be Related calculations give results.

2, the transmitter's range selection

The selection of the range of the transmitter generally has two principles: one is that the full scale of the instrument is greater than the expected maximum flow value, and the second is that the normal flow address is greater than 50% of the full scale of the instrument to ensure a certain measurement accuracy.

3, electromagnetic flowmeter lining selection

The lining material should be selected according to the corrosivity, abrasion and temperature of the measured medium.

4, application site selection

According to the name and nature of the measured medium, it is determined whether to use electromagnetic flowmeter; according to the learned medium temperature to determine the use of rubber or tetrafluoride lining; according to the learned medium pressure, select the body flange specifications; understand the user The specific requirements of the final determination of the electromagnetic flowmeter model specifications.

DN150 electromagnetic flowmeter features

1. It is not affected by changes in temperature, pressure, density, viscosity, and conductivity (not less than the lowest conductivity).

2. The sensor housing and flange are made of carbon steel or stainless steel. The electrodes and linings have a variety of materials to choose from. They are characterized by corrosion resistance, wear resistance and long service life.

3, the sensor structure is simple, no throttle, no blockage, it is suitable for solid particles, fibers, suspended solids such as slurry, pulp, pulp, sewage and other media measurements.

4. The installation is simple and can be installed at any angle from horizontal, vertical and inclined. The requirements for the upstream straight section are low.

5, display the cumulative flow (tens of display), instantaneous flow (six-digit display).

6, the operation is easy to set, intuitive settings through the keyboard on the panel.

7. Zero self-calibration eliminates zero drift.

8, in the calibration of the maximum flow range, the range can be set arbitrarily.

9, positive and negative flow measurement, if no special requirements, the factory is a positive measurement.

10, small signal removal function, the user can remove the interference of small flow through the display panel settings.

11. The user can set the upper and lower limit flow according to actual needs. When the flow exceeds the upper limit or lower than the lower limit, there is a relay output.

12. The empty pipe judges that in the working state, when the flowmeter measures the empty pipe in the pipe, the instantaneous flow empty pipe alarms.

13, password lock function, after the meter is powered on, if you set the parameters, you must enter the four-digit password in order to set parameters.

14, power failure protection function, flowmeter calculation results and user settings parameters will not be lost after power off, stored by the E2PROM, data can be stored for a long time, and through the panel operation, check the cumulative flow before.

15. For different conductive media, the meter factor can be corrected.