Installation requirements for gas flow meters

Installation requirements for gas flow meters

The Velbar flowmeter is suitable for high-precision flow measurement of gases, liquids, and vapors. Weiliba is a differential pressure and rate averaging flow sensor that measures flow by measuring the differential pressure generated by the sensor in the fluid.

The power bar reflects the true flow velocity of the fluid, with an accuracy of ± 1.0% and a repeatability of ± 0.1%.

Usage:

Flow measurement of gases, liquids, and vapors

Characteristics: Differential pressure and average rate formula

Accuracy ± 1.0%

The outstanding advantage of Weiliba is that it outputs a very stable and pulsation free differential pressure signal.

Probe features:

The probe with a bullet cross-sectional shape can generate precise pressure distribution and a fixed fluid separation point; The low-pressure tapping holes located on both sides behind the probe and before the fluid separation point can generate stable differential pressure signals and effectively prevent blockages.

The internal integrated structure can avoid signal leakage, improve the strength of the probe structure, and maintain long-term high accuracy.

The high-pressure tapping hole of the probe will not be blocked, forming a high-pressure zone at the front of the probe. The pressure is slightly higher than the static pressure of the pipeline, preventing particles from entering. Please note that the fluid velocity at the high-pressure tapping hole of the probe is zero, and no object will enter the tapping hole.

When starting up, the fluid enters the bend under the static pressure of the pipeline, quickly forming a state of pressure equilibrium. After the pressure equilibrium state is formed, the fluid encounters high pressure at the inlet of the bend, detours and no longer enters the bend.

Other probes have low-pressure pressure tapping holes located in the vacuum zone at the tail of the probe. Under the action of vortex forces, the low-pressure pressure tapping holes of the probe are quickly blocked by impurities brought by eddy currents. The design of Weiliba ensures that the low-pressure tapping holes are located on the back two sides of the probe, at the front of the fluid separation point and wake area.

This design fundamentally prevents blockage and can generate a very stable low-voltage signal.

Installation method:

1: The length requirement for the straight pipe section is 2D installation after bending the pipe.

2: Verify the direction of the pipeline. After the Wilybar component is inserted into the pipe, adjust the direction so that the direction arrow is consistent with the direction of the fluid in the pipe, and the included angle with the direction of the pipe is ± 30.

3: When installing horizontal pipelines and measuring gas media, the power bar should be installed above the pipeline to allow the condensate in the pressure pipe to flow back into the pipeline. Measuring liquids and vapors, it is advisable to install them below the pipeline to allow bubbles to flow back into the pipeline; Vertical pipeline installation, can be installed anywhere around the vertical pipeline 3600.

4: The installation location of the transmitter. When measuring gas media, the transmitter should be installed at a position higher than the power bar; When measuring liquid and vapor media, the transmitter should be installed at a position below the power bar.

5: Leakage of the pressure tube may cause damage to the high-pressure balance zone of the probe, and particles with smaller impurity diameters may enter the pressure tapping hole. It is necessary to regularly inspect the pressure tube.

6: Process shutdown, due to the Brownian motion of molecules, small impurities may enter the pressure tapping hole. If it is not used for a long time, it should be disassembled and stored.

7: Frequent start-up and shutdown of the process system may result in the formation of small impurities in the high-pressure zone, which may enter the pressure tapping hole and accumulate over time, causing blockage of the probe. Therefore, a reactive blow should be carried out during shutdown.

Jindi's customers are widely distributed in the fields of petroleum, chemical, automotive, electronics, metallurgy, machinery, materials industry, environmental protection, etc.

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Installation requirements for gas flow meters