Electromagnetic water meter for high precision measurement of hot and cold water

Electromagnetic water meter is an instrument that uses the principle of electromagnetic induction to measure water flow. Its working principle is based on Faraday's law of electromagnetic induction, which states that when a conductor moves in a magnetic field, an electromotive force is generated at both ends of the conductor. Electromagnetic water meters use this principle to measure water flow.

Electromagnetic water meter consists of two parts: flow sensor and calculator. The flow sensor is composed of two magnetic field coils, one is an electromagnetic coil, and the other is a detection coil. When water flows through the electromagnetic coil, it creates a magnetic field, which passes through the detection coil, creating an electromotive force in the detection coil. The size of this electromotive force is proportional to the water flow, so the water flow can be determined by measuring the size of the electromotive force.

The calculator part is used to process the signal generated by the flow sensor. It will convert the electromotive force generated in the detection coil into a digital signal, and process it, and finally obtain the value of the water flow. Calculators can also store water flow data for subsequent analysis and processing.

Electromagnetic water meter has the advantages of high precision, good stability and strong anti-interference ability. It can measure various types of liquids, including corrosive liquids and high-temperature liquids. In addition, the electromagnetic water meter can also be connected with a computer or other equipment through a communication interface to achieve remote monitoring and control. Electromagnetic water meter is a kind of water flow measuring instrument with high precision and high stability, and its working principle is based on the principle of electromagnetic induction. By measuring the electromotive force generated when water flows through the electromagnetic coil, the water flow rate can be accurately measured and the data can be transmitted to the calculator for processing and storage. Electromagnetic water meters are widely used in industry, agriculture, urban water supply and other fields.

Specification

FAQ

First, the liquid does not flow and has output:

1. There is a break between the signal transmission cable and the converter;

Solution: Connect the cable.

2. The signal cable is disconnected from the electrode;

Workaround: Turn on the sensor and reconnect it.

3. The electrode surface is contaminated or the insulation layer is deposited;

Solution: Scrub the electrode surface regularly.

4. The ground is faulty or disconnected.

Solution: Connect the ground cable.

Metal process pipe grounding: Metal pipe, no lining, no grounding ring, direct grounding (Connect the two ground wires on the electromagnetic water meter flange to the field process pipe, as far as possible to remove the process pipe cap, gasket position rust and paint during installation, ensure that the pipe contact point contact is good).

Second, the error is too large:

1. The zero point is too high;

Solution: re-adjust the zero;

2. Not completely filled with liquid;

Solution: Improved pipeline conditions, sensors are always filled with liquid;

3. Power distortion is too large;

Solution: Improve the power supply conditions to meet the normal working conditions;

4. The ground is faulty.

Solution: Connect the ground cable.

1. Unstable flow field

Solutions: retrofit pipelines, or install additional sensors;

2. The electrical connection is virtual

Solution: Check the wiring, connect the wire;

3. Poor grounding;

Solution: Connect the ground wire;

4. Electrode leakage

Solution: Fix the sensor.