The main purpose
It is used to determine the ventilation resistance of anti-particulate respirators, anti-particulate masks and filter elements of gas masks (canisters, canisters, dust boxes, filter materials), suitable for mask manufacturers, labor protection equipment inspection institutions, and scientific research The hospital inspects and inspects masks.
Technical parameter
1. The instrument consists of a gas source that can adjust the flow rate and a pressure measurement system.
2. Digital display of ventilation resistance, with functions of zero point correction and accuracy correction.
3. The sample holding device and the filter support are convenient to connect the filter sample.
4. Micro-pressure measuring range: 0-2000Pa, accuracy: ±1 Pa.
5. Range of gas flow meter: 0-100 L/min, accuracy: level 1; test flow: (30±0.6) L/min, (95±4) L/min.
6. Test time: 0～99.99s/h/m optional, accuracy: 0.01
7. Power supply: AC 220V, 50Hz
Applicable standards

GB 2890-2022 Respiratory protection-Non-powered air-purifying gas mask

EN 14387