The main purpose

LFY-711B is used to measure the respiratory resistance of powered air filter respirators. Applicable to the national labor protection equipment inspection agencies and mask manufacturers to carry out related inspections and inspections of PARA products of close-fitting masks, open masks and aeration hoods.

Technical index

1. Respiration rate: (10~40) breaths/min, adjustable, test breathing rate is 20 breaths/min, 25 breaths/min;

2. Tidal volume: 1.0L~3.0L, adjustable, test tidal volume 1.5L, tidal volume 2.0L;

3. Flow meter: range (0~500) L/min; accuracy 3%;

4. Low pressure sensor: range (-2000~2000) Pa, accuracy: ±1Pa;

5. Head model: you can look up vertically, look down vertically, look forward horizontally, look left horizontally, and look right horizontally;

6. Air pump: not less than 100L/min;

7. Display and data processing: touch screen operation, strong scalability and stable control system. It can realize real-time monitoring and curve display of test data, automatic evaluation of test results, data storage and export, and historical data query functions;

8. Power supply: AC220V, 50Hz.

Applicable standards

GB 36804-2014 Respiratory protection—Powered air-purifying respirator