Current position > Product detail
『water flow meter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. Reasons for Flow Fluctuations in Sealed Water Flow Meter
The main reasons for flow fluctuations in sealed water flow meters include changes in fluid characteristics, instrument installation problems, equipment self modification faults, and external interference. It is necessary to systematically investigate and determine the specific causes. 1. The fluid itself contains gas or cavitation: dissolved gases in water precipitate or cavitation bubbles are generated in the negative pressure section of the pipeline, causing measurement values to jump when flowing through the electrode. Uneven medium: The fluid contains flocculent substances, grease, or a mixture of solid and liquid phases, resulting in unstable flow velocity distribution and fluctuation of measurement electrode signals. 2. Installation and pipeline problems: Insufficient straight pipe section: The front end of the flowmeter does not retain enough straight pipe (usually requiring a front length of 10D and a back length of 5D), and valve and bend disturbances cause distortion of the flow velocity profile. Sealing leakage: When air enters the flange or threaded connection of the pipeline, small bubbles enter the measuring tube and interfere with the stability of the magnetic field. Unsatisfactory operation: The pipeline is not fully filled or the installation angle is incorrect, causing significant oscillation of the measured value due to liquid level shaking
3. Instrument body failure and electrode aging: After long-term use, the electrode adheres to an insulating scale layer or undergoes electrochemical corrosion, resulting in signal acquisition distortion. Lining damage: After the wear of PTFE and other lining materials, the medium seeps int
4. External interference factors: Power supply fluctuations: sudden changes in power supply voltage or start stop of nearby high-power equipment, coupled with interference converters through power lines. Strong electromagnetic interference: The flowmeter cable is laid in parallel with the frequency converter and motor power line, and no shielding measures are taken, resulting in signal superposition noise. Troubleshooting suggestion: Prioritize checking the gas-liquid mixing status and installation compliance of the pipeline, and then verify the accuracy of the instrument through offline calibration of the bridge. Pay attention to closing the valve and releasing pressure before operating the high-pressure pipeline during troubleshooting.
2. Is the last digit of the water meter 1 ton or 0.1 ton?
Water meters, also known as flow meters or water flow meters, display numbers consisting of integers and decimals. For example, if the water meter displays the number 1234.5, then 1234 is the integer part, representing 1234 tons of water, and 0.5 is the decimal part, representing 0.5 tons of water. According to this, the last digit of the water meter represents 0.1 tons. Therefore, when the last digit of the water meter shows 1, it actually represents a water volume of 0.1 tons. Water meter is an instrument used to measure water flow, widely used in various occasions such as homes, factories, commercial facilities, etc. It is mainly composed of components such as s