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Do you know the correct installation method for commonly used flow meters?
2. How to ground the mass flow meter?
The correct grounding method for a mass flowmeter needs to be selected based on the pipeline material and grounding conditions, as follows:
1. Grounding on a grounded metal pipeline: Complete the grounding through the grounding terminal on the transmitter.
. Connect copper core wires with a cross-sectional area greater than 6 square millimeters to the grounding terminal. Purpose: To enhance anti-interference ability and ensure accurate measurement data. (The connection method between the transmitter grounding terminal and the copper core wire is shown in the figure)2. Operation method for connecting to an ungrounded metal pipeline: Use a copper core wire with a cross-sectional area less than 6 square millimeters to connect the two flanges of the pipeline. Ground the other end of the wire and connect the transmitter or sensor to the grounding terminal. Purpose: To achieve potential balance and avoid electromagnetic interference through flange grounding.
3. Operation method for connecting to plastic pipes or pipes lined with insulation materials: Install an additional grounding ring and use copper core wires to connect the grounding ring to the grounding terminal.
. Key point: The grounding ring should be tightly attached to the inner wall of the pipeline to ensure conductivity. Purpose: To achieve potential balance by breaking through the insulation layer through the grounding ring. 4. Core precautions: Non metallic pipelines must be grounded: If the process pipeline is made of non-metallic materials such as plastic, not grounded will result in invalid measurement
Fifth, other installation specifications for flange connections: Ensure that the connecting flange faces are parallel, the central axis is consistent, and avoid additional stress.
. Valve configuration: Install shut-off valves and bypass valves upstream and downstream for easy zeroing and maintenance. Medium filling: Liquid installation should avoid gas accumulation, and gas installation should avoid liquid accumulation. Pipeline blowing: New pipelines or pipelines that have not been used for a long time need to be blown in advance to remove welding slag or debris. By standardizing grounding and installation, the anti-interference ability of quality flow meters can be significantly improved, ensuring accurate and reliable measurement data.
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