1.Application:

It is used to measure the inhalation resistance and exhalation resistance of respirators and masks under specified conditions. Apply to National Labor

Protective equipment inspection agencies and mask manufacturers conduct inspections on ordinary masks, dust masks, medical masks, and anti-smog masks.

related inspections and inspections.

2. Applicable standards:

Ø  GB 2626-2006Respiratory protective equipment self-priming filter anti-particulate respirator6.5 6.6

Ø  GB/T 32610-2016Technical specifications for daily protective masks.

Ø  European standardEN149respiratory protection

3. Technical indicators:

3.1 The instrument consists of an air source that can adjust the flow rate, a human head model specified in the standard, two sets of pipeline systems for inhalation and exhalation, and a breathing resistance

Force measurement system and other components.

3.2 The flow sensor has high sensitivity and has a very small starting flow.

3.3 The flow sensor chip adopts a thermal mass flow meter without temperature and pressure compensation, which ensures the high-precision measurement of the sensor.

The flow meter range is0 L/min~200L/min, with an accuracy of ±2%.

3.4. Multiple sensors are integrated on a single flow sensor chip, which greatly improves the range ratio of the sensor.

3.5 The zero point stability of the flow sensor is high, with high stability in the full range, high accuracy in the full range and excellent repeatability

It has the characteristics of low power consumption, low voltage loss and fast response.

3.6 The data logger adopts the resolution128x64Graphic dot matrix LCD, full Chinese interface, easy to operate.

3.7 The data logger has4MThe internal memory is used for measurement value recording.

3.8 The micromanometer sensor adopts two-wire system, high precision and good stability; it adopts explosion-proof design and is safe and reliable to use.

3.9 Micromanometer sensor range, zero external continuous adjustable, adjustable damping, no mechanical moving parts, less maintenance work.

The micromanometer range is-1000Pa~1000Pa, with an accuracy of1Pa.

3.10 The whole instrument adopts a special gas circuit conversion element, which ensures the convenient and quick conversion of the exhalation and inhalation pipeline systems.

3.11 The suction volume of the air pump is not less than40L/min~120L/min

3.12 The expiratory volume is0-200L/MIN(adjustable)

3.13 Power supply:AC220V,50Hz