Product Description 
 The self-rescue device QMY-1 positive pressure airtight detector instrument airtightness testing apparatus can be quickly and efficiently testing equipment leaks, airtightness inspection. Table shows the first integrated High-precision electronic pressure gauge with an intuitive display, high resolution, simple operation, easy to use. 

 Instrument characteristics 
 QMY-1 positive pressure air-tight detector (hereinafter referred to as the instrument), the use of positive pressure detection, digital pressure gauge shows the air-tightness of the instrument can be detected quickly and intuitively, with high accuracy, intuitive display, compact structure, stable performance , simple operation. This instrument applies to users of the product factory and daily air tightness check. 

 Working Principle 
 Self-rescue device QMY-1 positive-pressure hermetic detector through the press handle to put pressure on the gland seal pressure ring and buckle closure pressure hook, so the studio shut down and seal. Because the work indoor air pressure to the edges, it is passed to the digital pressure gauge, which measured pressure values. 
 Technical parameters 
 Measuring range: (3000 ~ 16000) Pa; 
 Resolution: (0 to 10) kPa> 10kPa 1Pa10Pa 
 Accuracy class: 0.2 
 Power supply: high-energy lithium batteries 
 Battery life: 3 years 
 Sensor Type: diffused silicon pressure sensor 
 Dimensions: 470 × 340 × 400mm 
 Weight: <48kg