What is the reason for the short circuit of the electromagnetic flowmeter coil?

Case introduction

1. Coil insulation damage

The coil insulation damage of electromagnetic flowmeter is one of the main reasons for coil short circuit. Since the liquid flows through the measuring tube when the electromagnetic flowmeter is working, an electric field is formed in the measuring tube. The electromagnetic flowmeter uses the principle of induced current measurement, and the coil will be affected by electromagnetic force. If the coil insulation is damaged, a short circuit will occur, which will affect the operation of the electromagnetic flowmeter and may cause damage to the current amplifier.

In response to this situation, the measure we can take is to use materials with good insulation properties to insulate the coils to prevent them from being damaged due to corrosion, aging and other reasons.

2. Coil aging

As the use time of the electromagnetic flowmeter increases, the coil will age, causing the electromagnetic flowmeter coil to short-circuit. The specific manifestation of coil aging is that the insulation layer appears cracked or hardened, causing a short circuit.

In response to this situation, the measures we can take are to regularly check the coils of the electromagnetic flowmeter, replace seriously aged coils in time, and extend the service life of the electromagnetic flowmeter.

3. Short circuit inside the coil

Short circuit inside the coil is also a common cause of short circuit in the electromagnetic flowmeter coil. The internal short circuit of the coil is mainly the inter-turn short circuit of the coil, which causes the current inside the current winding to be too large, causing sparks or friction, causing a short circuit.

In view of this situation, the measures we can take are to avoid internal wear and damage of the coil during production and use, optimize the coil raw materials and production process, and reduce the occurrence of short circuit problems inside the coil.

IV. Conclusion

The electromagnetic flowmeter is a precision instrument, and the solution to the coil short circuit problem requires comprehensive consideration of many factors. This article analyzes the causes of electromagnetic flowmeter coil short circuit and proposes relevant countermeasures. As engineers who use electromagnetic flowmeters, we need to ensure the normal operation of the electromagnetic flowmeter and ensure the smooth progress of production.