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Understanding common troubleshooting methods for A+K balance flow meters to help users quickly restore normal operation
Date: 2025-07-15Read: 9
A+K balance flowmeter may encounter some problems during user use. Understanding these problems and their corresponding solutions can help users quickly restore normal operation, ensure measurement accuracy and system stability. This article will provide a detailed introduction to common faults and solutions of A+K balance flow meters.
1、 Measurement errors caused by improper installation
Phenomenon: There is a significant deviation in the measurement results, which does not match the expected values.
Reason: Improper installation location selection, such as near bends or valves that cause flow field disturbances; The porous plate is not installed perpendicular to the pipeline axis, resulting in uneven fluid flow.
resolvent:
According to the installation guide provided by the manufacturer, ensure that it is installed on the straight pipe section, away from components that may cause flow field disturbances (at least a distance of 5D in the front and 3D in the back, where D is the pipe diameter).
Use a spirit level to check and adjust the installation angle, ensuring that the porous plate is perpendicular to the pipeline axis.
2、 Differential pressure sensor malfunction
Phenomenon: Abnormal differential pressure reading, displayed as zero or fluctuating violently.
Reason: Damage or aging of internal components of the sensor; Loose or damaged connecting cables; Sensors are subject to external electromagnetic interference.
resolvent:
Check if all electrical connections are secure, repair or replace loose or damaged cables.
If you suspect that the sensor itself is faulty, you can try calibrating it with known standards. If calibration fails, you need to replace the sensor with a new one.
Ensure that there are no strong electromagnetic interference sources around the sensor and take necessary shielding measures.
3、 Blockage or pollution affects measurement accuracy
Phenomenon: The output signal is unstable and the measured value is low.
Reason: The surface of the porous plate is covered with impurities or sediments, which hinders the normal flow of fluid.
resolvent:
Regularly disassemble and clean the porous plate, and it is recommended to clean it once every quarter. You can use a soft brush to gently remove surface dirt, and if necessary, use an ultrasonic cleaning machine for deep cleaning.
For media that are prone to sedimentation, consider installing filters upstream to reduce the entry of pollutants into the instrument.
4、 Leakage caused by seal failure
Phenomenon: Liquid or gas leakage is found at the interface.
Reason: The sealing ring is aging or damaged, and cannot provide effective sealing.
resolvent:
Regularly check the condition of all seals and replace them promptly if aging or damage is found. Choose high-quality sealing materials that are resistant to high temperatures and corrosion to extend their service life.
During installation, ensure that all sealing surfaces are clean and undamaged, and tighten bolts to the specified torque.