How to detect whether the electromagnetic flowmeter fluid is full or not?

Case introduction

1. Installation method of electromagnetic flowmeter

Electromagnetic flowmeter is an instrument that measures the volume flow of conductive media based on Faraday's law of electromagnetic induction. When installing an electromagnetic flowmeter, you need to pay attention to the following points:

1. Installation location: The installation location of the electromagnetic flowmeter should try to avoid interference such as bubbles and impacts. You can choose a horizontal or tilted position for the pipe. At the same time, avoid installing it in key parts of the pipeline to avoid affecting the normal operation of the pipeline.

2. Installation method: There are two installation methods of electromagnetic flowmeter: flange type and clamp type. The appropriate installation method should be selected according to the actual situation. During installation, installation must be carried out strictly in accordance with the operation manual to ensure accurate detection.

3. Sealing: The sealing of the electromagnetic flowmeter plays a very important role in the test results. Pay attention to the sealing during installation to ensure no water or air leakage.

2. How to detect whether the fluid pipe is full

During the use of electromagnetic flowmeters, it is sometimes necessary to detect whether the fluid pipe is full to ensure the accuracy of the test results. The specific method is as follows:

1. Observe the pipeline: Before the electromagnetic flowmeter works, you can judge whether the pipe is full by observing the liquid level in the pipeline and whether the fluid is stable. If the liquid level reaches more than 70% of the pipe diameter and the fluid is in a stable state, the pipe can be considered full.

2. Static detection: When the electromagnetic flowmeter is working, static detection can be performed. The specific method is to keep the fluid stationary. At this time, the reading of the electromagnetic flowmeter should be 0. If the reading is not 0, it means that the pipe is not full or there is interference such as bubbles in the pipe.

3. Dynamic detection: When the electromagnetic flowmeter is working, dynamic detection can be performed. The specific method is to change the pipeline flow rate or flow rate and observe whether the electromagnetic flowmeter reading changes. If the reading changes greatly, it means that the pipe is not full or there are interferences such as bubbles in the pipe.

4. Pressure test and inspection: After installing the electromagnetic flowmeter, pressure test and inspection can be carried out. The specific method is to close the inlet valve of the pipeline, fill the pipeline with water, and then close the outlet valve. At this time, the liquid level should reach more than 70% of the pipe diameter, and the liquid level should remain stable.

The above is the method for electromagnetic flowmeter to detect whether the fluid pipe is full. I hope it will be helpful to you. When using electromagnetic flowmeters, attention should be paid to installation, use, maintenance and other aspects to ensure the accuracy of test results.