Common Applications Of Pneumatic Pressure Gauges In Automatic Test Equipment

As the core monitoring element in the pneumatic system, the pneumatic pressure gauge is widely used in automatic test equipment. It ensures the stability and accuracy of the test process by accurately measuring and feeding back pressure data, and widely serves the electronics, automobile, medical equipment and other industries. The following will introduce the common application scenarios of pneumatic pressure gauges in automatic test equipment in points.

1. Control the clamping force of pneumatic fixtures

In automatic test equipment, pneumatic fixtures are often used to fix the test pieces, such as clamping circuit boards in electronic component testing. The pneumatic pressure gauge monitors the air pressure of the fixture in real time to ensure that the clamping force is neither too large to damage the sample nor too small to cause looseness. For example, in the pressure test of the mobile phone screen, the pressure gauge ensures that the force applied by the cylinder is within the safe range, thereby ensuring the reliability and consistency of the test results.

2. Precise contact of the drive probe

In automatic test equipment, the probe is used to detect the continuity or performance of the circuit, such as the functional test of semiconductor chips. The pneumatic pressure gauge ensures that the force of the probe contacting the test point is moderate by monitoring the cylinder pressure of the drive probe. If the pressure is too high, it may pierce the chip surface; if it is too low, poor contact will lead to misjudgment. The precise control of the pressure gauge keeps the contact conditions consistent for each test and improves the detection accuracy.

3. Adjust the airflow to support the purge function

Many automatic test equipment requires cleaning of samples before and after testing, such as removing dust or residue. The pneumatic system achieves this function through nozzle purge, and the pneumatic pressure gauge is responsible for monitoring and regulating the airflow pressure. For example, in optical lens test equipment, the pressure gauge ensures that the purge airflow is stable to avoid incomplete cleaning due to insufficient pressure or damage to the lens surface due to overpressure.

4. Ensure the stability of the pneumatic conveying system

Automatic test equipment is usually equipped with conveyor belts or robotic arms to move the test pieces from one test station to the next. Pneumatic pressure gauges monitor the air pressure in these pneumatic conveying systems to ensure that the moving parts operate smoothly. For example, in the automotive parts test line, the pressure gauge ensures that the pneumatic robotic arm's grasping and releasing actions are accurate to avoid falling or misalignment due to air pressure fluctuations.

5. Monitoring system safety and fault warning

Pneumatic pressure gauges are not only functional tools, but also play a role in safety monitoring in automatic test equipment. It can detect abnormal air pressure in time, such as pipeline leakage or compressor failure, and trigger an alarm when the pressure exceeds the set range. For example, in medical device testing equipment, if the pressure gauge detects abnormally high pressure, the test can be suspended immediately to prevent damage to the equipment or affect the test sample, thereby ensuring operational safety.

6. Support adaptability in complex test environments

In some special test scenarios, such as performance testing in high or low temperature environments, pneumatic pressure gauges ensure that the pneumatic system adapts to extreme conditions. For example, in battery durability testing, the pressure gauge monitors the pressure stability of the pneumatic system under temperature changes to ensure the normal operation of the test equipment under different working conditions. This adaptability enables automatic test equipment to cope with diverse testing needs.