Common differential pressure gauge troubleshooting methods

Дифференциальные манометры are widely used in industrial processes to measure the pressure difference between two points. They are often used in scenarios such as flow monitoring and filter status monitoring. However, due to the long-term operation of differential pressure gauges in harsh environments, various faults may occur. Knowing how to troubleshoot and repair differential pressure gauge failures is essential to ensure measurement accuracy during production.

First, when a differential pressure gauge fails, one of the most common situations is that the pointer does not move or the reading is abnormal. This is usually caused by damage or contamination of the mechanical parts inside the differential pressure gauge. When troubleshooting, first check whether there are leaks in the pipes and interfaces of the differential pressure gauge to ensure that the gas or liquid flows normally. If there is no abnormality outside, the differential pressure gauge needs to be disassembled to check its internal mechanism, especially whether the pointer, gears and other parts are stuck or damaged. For mechanical differential pressure gauges, it may be due to dust accumulation or debris blocking, and cleaning and lubrication can restore normal operation.

Another common fault is unstable or excessive fluctuations in readings. This may be due to a sensor failure in the electronic differential pressure gauge, or changes in the external environment affecting the measurement results. At this time, it is necessary to check whether the power supply and wiring are stable, and eliminate the influence of poor contact or current fluctuation. If the electronic sensor fails, the sensor needs to be replaced. For mechanical differential pressure gauges, fluctuation problems are often related to poor sealing or mechanical looseness, so it is necessary to check the installation position and sealing of the differential pressure gauge to ensure that there is no looseness or leakage.

The differential pressure gauge may also have leakage problems. At this time, the interface, sealing ring and pipe connection of the instrument should be checked for aging or damage. Poor sealing is usually the main cause of leakage. After the problem is found, the sealing ring should be replaced or the joint should be re-fixed in time to avoid leakage.

When the reading of the differential pressure gauge deviates too much from the actual value, it may be due to calibration errors or the differential pressure gauge has not been calibrated for a long time. At this time, the differential pressure gauge needs to be compared with the standard pressure source and its accuracy restored by adjusting the instrument. For electronic differential pressure gauges, corrections can be made through the internal calibration function; while mechanical differential pressure gauges need to be manually calibrated with the help of professional equipment.

As a professional differential pressure gauge manufacturer, Ma anshan Exact Instrument Co., Ltd. is committed to providing high-quality differential pressure gauges and related measuring instruments. The company has many years of R&D experience, provides various инструменты давления including differential pressure gauges, and provides customers with comprehensive after-sales services. Whether it is regular maintenance of equipment, troubleshooting or calibration services, Ma anshan Exact Instrument Co., Ltd. can provide professional technical support to ensure the long-term and stable operation of customers' measurement systems.