Several points should be noted when using split type electromagnetic flowmeter
Split type electromagnetic flowmeter is mainly used in petroleum, chemical, food, papermaking and other industries, in order to ensure the accuracy of flowmeter measurement, there are a few need to pay attention to when using, next we will talk about.
Notes for use:
1, the split type electromagnetic flowmeter induction signal voltage is very small, so must have a good grounding.The general flowmeter is equipped with a ground ring to establish a liquid ground through liquid contact and also to protect the lining.The reference potential of the sensor and the reference potential of the converter/amplifier are all the same as the liquid potential and the ground potential, so as to reduce the influence of noise on the measurement results.
2. The wiring between the sensor and the converter must be covered by the specified shielded cable, and no other cable shall be used instead.And the signal cable must be worn separately in the earthing protection steel tube, strictly separated from other power sources.In addition, the shorter the signal cable and the excitation cable, the better.
3. There must be a straight tube before and after the installation of electromagnetic flow timing requirements. The recommended minimum requirements for the front straight tube before and after the on-site installation are no less than 10D and no less than 5D, so as to ensure the full development of fluid flow into the measuring tube.
4. Avoid the place of strong vibration environment and strong corrosive gas when installation, so as not to cause damage to the insulation between the electrode and the pipe.
5. In order to facilitate the maintenance of the electromagnetic flowmeter, a cut-off valve or bypass pipeline should be installed before and after the meter to facilitate the installation and removal of the meter.
Above is the split type electromagnetic flowmeter use matters needing attention, I hope you can pay attention to, only the correct operation, in order to ensure the accuracy of measurement, and ensure the service life of the flowmeter.
Kaifeng dafang dingsheng instrument co., LTD specializes in the development, production and sales of flow meters.Main: electromagnetic flowmeter, open channel flowmeter, electromagnetic water meter, rotor flowmeter, vortex street flowmeter, turbine flowmeter.