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Digital display intelligent liquid vortex flowmeter is based on Karmen vortex street principle research and production, mainly used for flow measurement of industrial pipeline medium fluid, such as gas, liquid, steam and other media. Its characteristics are low pressure loss, large range, high precision, and almost no influence of parameters such as fluid density, pressure, temperature, and viscosity when measuring volume flow. No moving mechanical parts, so high reliability and low maintenance. Instrument parameters can be stable over a long period of time.
Digital display intelligent liquid vortex flowmeter installation requirements:
Digital display intelligent liquid vortex flowmeter installation requirements:
First, a reasonable choice of installation site and environment:
Avoid strong power equipment, high-frequency equipment, strong power switch equipment; avoid high-temperature heat sources and radiation sources, avoid strong vibration and strong corrosion environment, etc., at the same time to consider the installation and maintenance.
Second, there must be enough straight-line sections in the upper and lower reaches:
There are two 90s on the same plane upstream of the sensor mounting point. Elbow, then: upstream straight section ≥ 25D, downstream straight section ≥ 5D.
There are two 90s on different planes upstream of the sensor mounting point. Elbow, then: upstream straight section ≥ 40D, downstream straight section ≥ 5D.
The regulating valve shall be installed outside the sensor at 5D downstream. If it must be installed upstream of the sensor, the upstream straight section of the sensor shall not be less than 50D, and the downstream shall be not less than 5D.
Third, the upstream and downstream pipe fittings should be concentric with the sensor, coaxial deviation should not be less than one-half pipe diameter:
Fourth, the pipeline to take vibration reduction measures:
Sensors should be installed as far as possible on the vibration of the pipeline, especially the lateral vibration. If it is necessary to install, vibration reduction measures must be taken. Pipe fastening devices are installed at the upstream and downstream 2D ​​of the sensor and anti-vibration pads are added.
V. Installation on horizontal pipelines is the most common installation method for flow sensors:
When measuring gas flow, if the measured gas contains a small amount of liquid, the sensor should be installed in the higher part of the pipeline.
When measuring the liquid flow, if the measured liquid contains a small amount of gas, the sensor should be installed in the lower part of the pipeline.
Six, sensor installation in the vertical pipeline:
When measuring gas flow, the sensor can be mounted on a vertical pipe with unlimited flow. If the gas to be measured contains a small amount of liquid, the gas flow should be directed upwards.
When measuring the liquid flow, the liquid flow should be directed from the bottom up so that no additional liquid weight is attached to the probe.
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