Respirator breath resistance tester

Respirator breath resistance tester adopts the latest technology and the most general test method. It is an ideal instrument for testing the permeability of various respirators, leather, cloth, fabric, paper, cardboard or other sheet objects. This instrument is a fully integrated automatic instrument.

Standards: yy0469-2011 medical surgical mask, YY / T 0969-2013 disposable medical mask, t / CNTAC 55-2020, t / CNTA 09104-2020 civil health mask, en14683:2019 iso9237, GB / t458, iso5636 / 2, QB / t1667, GB / t22819, GB / t23227, iso2965, YC / T172, GB / t12655, etc

technical parameter

Test range

0~200 (Pa/ cm²),0～400L/dm²/min

Company

Pa/ cm²,Pa,L/dm²/min,μm/(Pa•s),mm/s,m/s

accuracy

0.01 (Pa/ cm²) 0.1Pa 0.01 L/dm²/min

error

<1%

Measurement area

4.9cm

Test air flow (mask)

8L/min

Test differential pressure range

0-2000Pa

weight

25kg

size

420×340×480mm

Feature description

Principle of respirator resistance test:

The gas flow rate for the test is adjusted to 8L / min, the diameter of the sample test area is 25 mm, the test area is 4.9 cm? 2, and the pressure difference is calculated,

The results are reported as pressure differences per square centimeter area.

Testing principle of fabric air permeability:

Based on the principle design of the differential pressure method, the pretreated sample is placed between the upper and lower measuring surfaces to form a constant differential pressure on both sides of the sample. Under the action of the differential pressure, the gas flows from the high pressure side to the low pressure side through the sample. According to the area, differential pressure and flow rate of the sample, the permeability of the sample is calculated. Or form a constant air flow on both sides of the sample, record the pressure difference on both sides of the sample and calculate the permeability of the sample.

Product characteristics

① The chips and sensors of the instrument are imported from the United States, and the test results are accurate, reproducible and accurate. The calibration of pressure sensor and flow sensor is traceable.

② Exquisite design: the instrument adopts microcomputer technology, and the test process is fully automatic, fast and accurate. Touch screen LCD display results, with data recording and processing functions, with printout.

③ Superior performance: compared with the traditional air permeability instrument, the instrument has high advantages. For the paper with low air permeability, it can set a higher differential pressure, while for the paper with high air permeability, it can set a lower differential pressure, so as to easily and accurately measure the results.

④ Easy to use, high automation: the traditional air permeability tester is not only slow but also laborious, on the contrary, the test of the air permeability tester is automatic and fast, and the accuracy of the test results is guaranteed. Misoperation or low reproducibility of test results, which are caused by poor design and manufacturing technology of the instrument, are effectively avoided in this instrument.