The QMY-1 self-rescuer positive pressure air tightness tester is a device for checking the air tightness of instruments. It can quickly and effectively detect whether the instrument is leaking and perform air tightness inspections. The display gauge adopts a high-precision integrated electronic pressure gauge, featuring intuitive display, high resolution, simple operation, and ease of use.
Features of the self-rescuer positive pressure air tightness tester: It uses the positive pressure testing method, with a digital pressure gauge display, enabling quick and intuitive inspection of the instrument's air tightness. It offers high measurement accuracy, intuitive display, compact structure, stable performance, and simple operation. This instrument is suitable for users to perform factory and daily air tightness inspections on products.
Working Principle of the QMY-1 Self-Rescuer Positive Pressure Air Tightness Tester
By applying pressure to the sealing cover and sealing ring via the pressure handle and fastening the sealing hook, the working chamber is closed and sealed. As the air inside the working chamber is compressed and diffuses outward, it transmits to the digital pressure gauge, thereby measuring the pressure value.
Technical Parameters of the QMY-1 Self-Rescuer Positive Pressure Air Tightness Tester
Measurement range: (3000–16000) Pa;
Resolution: (0–10) kPa > 10 kPa 1 Pa 10 Pa
Accuracy class: 0.2
Power supply: High-energy lithium battery
Battery life: >3 years
Sensor type: Diffused silicon pressure sensor
Dimensions: 470 × 340 × 400 mm
Weight: <48 kg 

Zhengzhou Aidi produces QMY-1 self-rescuer positive pressure air tightness tester, supplies coal drill cuttings desorption tester, deep hole sampling device, pressure tester, geological exploration desorption tester, borehole flow meter, mine extraction and outburst prevention equipment, true density tester of coal, gas content tester, automatic initial gas emission rate tester, diffusion rate tester, gas parameter tester for coal extraction pipelines, and borehole coal powder circulation device.