Electromagnetic flowmeter installation environment

Case introduction

The measurement principle of the electromagnetic flowmeter is Faraday's law of electromagnetic induction. The main components of the sensor are: measuring tube, electrode, excitation coil, iron core and yoke shell. This product is mainly used to measure the volume flow rate in conductive liquids and slurries in closed pipes. Including highly corrosive liquids such as acids, alkalis, and salts. Electromagnetic flowmeters are widely used in petroleum, chemical, metallurgy, textile, food, pharmaceutical, paper and other industries as well as environmental protection, municipal management, water conservancy construction and other fields. Electromagnetic flowmeter sensors and most converters need to be installed on site, especially the sensors, which are directly connected to the process pipeline and in contact with the fluid being measured, so the working conditions and environment are relatively harsh.

In order for the instrument to operate normally, a suitable installation environment should be selected.

1. Selection of the installation environment of the electromagnetic flowmeter sensor. The protection level of the electromagnetic flowmeter sensor housing is generally IP65 (national standard GB4208 housing protection level - dustproof and water spray-proof level). The main requirements for the installation environment are: 1. The sensor should be installed in a dry place It should be kept in a ventilated place, avoid places that are humid and prone to water accumulation, and should also try to avoid direct sunlight and direct rainwater. 2. Avoid installing in places where the ambient temperature is too high as much as possible. The electromagnetic flowmeter with an integrated structure is also subject to the operating temperature of the electronic components, and its operating environment temperature is lower. 3. There should be no strong leakage current on the pipeline where the sensor is installed, and it should be as far away from equipment with strong electromagnetic fields as possible, such as large motors, large transformers, etc., to avoid electromagnetic field interference. 4. The pipe or ground where the sensor is installed should not have strong vibrations, especially for integrated instruments. 5. The location where the sensor is installed should consider the space for on-site maintenance by the staff.

2. Selection of the installation environment of the electromagnetic flowmeter converter. The converter is used as an on-site installation instrument for on-site indication. Its installation location should generally be selected: the ambient temperature is between -10~45℃; the relative temperature of the air is ≤85%; There should be no strong vibration at the installation site; the surrounding air does not contain corrosive gases; the converter should be installed indoors as much as possible. When installed outdoors, measures should also be taken to protect it from sunlight and rain.