Moisture resistant microbial penetration tester

Medical protective clothing breathable performance tester is one of the gas permeability tester family, suitable for a variety of textiles including industrial fabrics, non-woven fabrics and other breathable products such as sponges and other materials.

And high breathable materials such as paper testing.

The basic information is applicable to the determination of the permeability of a variety of textile fabrics, including industrial fabrics, nonwovens and other textile products and other breathable materials.

Application industry

Widely used in food and medicine

Instrument characteristics

1. The instrument is equipped with temperature control function, which can simulate the condition of the product in the actual environment and meet various requirements of material permeability test within the temperature range.

2, unique fitting function, can be -273℃~+200℃ material permeability, permeability coefficient, solubility coefficient and diffusion coefficient, to meet the plastic film in high and low temperature and other special application conditions of the test and evaluation of permeability.

3. Computer control and automatic test

4. Determine transmittance, solubility, diffusion and permeability coefficient

5. Proportion and fuzzy judgment mode of test process

6. It can be extended to test toxic, explosive and other dangerous gases

7. The range can be set and extended by software

8. Quick calibration of standard membrane

9. Network transmission interface supports LAN data centralized management and Internet information transmission

Application industry

Widely used in food, medicine, packaging, plastic, industry, electronics, energy and other industries, applicable to plastic film, composite membrane, paper-plastic composite packaging, solar backplane, sheet, composite materials, aluminum plating film, co-extrusion film such as film, aluminum foil, sheet material and plastic, rubber, paper, glass, metal materials such as bottles, bags, cans, boxes and other packaging container.

The test principle of

Place with good sample in advance between the up and down test chamber, clamping, first of all to vacuum the low pressure cavity (inferior vena), then the entire system of pumping air into vacuum state, when reach the specified vacuum, close test inferior vena, to the high pressure cavity (cavity) filling the test gas pressure, and ensure the form of a constant pressure difference on both sides of the sample (adjustable), gas will be under the function of differential pressure gradient, is composed of high voltage low voltage side of lateral seepage, through the process in the low voltage side pressure monitoring, thus it is concluded that the test sample of the barrier property parameters.

Execution standard

Textile fabrics - Determination of air permeability

GB/T5453, GB/T13764, ASTM D737, ISO 9237, ISO 5636

Using the environment

1. The instrument shall be placed on a flat and stable platform (or foundation).

2. There is no strong magnetic field and vibration source around the instrument.

3. Indoor atmosphere has no corrosive medium, no large particle dust and stable airflow.

4. Environment: Temperature 20±3℃ Humidity RH :≤65%

5. Ac220V±10V and 50Hz are used for power supply with good grounding. It is recommended to use power regulator (AC220±1% 2kW) in the area with large fluctuation of external power supply.

debugging

1, the instrument should be adjusted before work, the specific operation is to rotate adjustable foot to make the instrument level.

2. Check whether the sample fixed value ring is tightly wound and whether the air-tight ring is close to the two joint surfaces.

3. Check whether the head can control the head up and down flexibly.

4. Check whether the suction hose is tightly connected with the flow cylinder and the suction fan.

5. Check whether the door cover and door lock on the flow cylinder body can be closed.

6. Check whether the printer is online correctly.

7, correction,

8. Check the instrument for air leakage: replace the calibration plate with a non-orifice plate for testing. The air permeability screen shows a value of 0(less than 10Pa) as no air leakage; otherwise, some part of the instrument should be checked and adjusted.

Fold edit this section

1. Prepare samples and cut them to the specified size as required.

2. Select the sample setting circle and install it on the instrument.

3. Select the nozzle.

4. Power on the instrument.

5. Parameter setting.

6. Press the start button to start the instrument.

7. The instrument will automatically press the sample and start the test. When the set pressure difference is reached, it will automatically loosen the sample and automatically convert the test result and stop.

8. Test the next sample until the number of valid tests reaches the requirements (the current number of tests on the display screen is the number) and data processing is carried out according to GB/T 5453-97.

9. The test results can be observed on the air permeability/pressure differential display screen or printed.

10. At the end of the test, turn off the power, clean the instrument and all accessories, remove the fixed value ring and put it in the spare parts drawer.

Matters needing attention

1. The instrument is a high-precision equipment. Collision and severe turbulence are strictly prohibited during moving and transportation.

2, the instrument factory has been relatively accurate, non-professionals can not fold the internal parts of the instrument.

3. The instrument accessories (nozzle, nozzle holder, orifice plate, sample setting ring) are directly related to the test accuracy, and direct wiping with a rag is not allowed. In case of contamination, blow the surface dust with a blow ear ball.

4. Do not touch the sample during the test to avoid affecting the permeability of the sample.

5. The selection of nozzle diameter should be based on the permeability of the sample. For the sample with unclear permeability, it is necessary to carry out more tests to make it more accurate to reflect the permeability of the sample.

6. The filter screen in the air flow measuring cylinder should be cleaned regularly according to the use frequency.

7. If the instrument is tested for a long time and the pressure difference value is not stable and the fan sound is too large continuously, the machine should be shut down to check whether the air tightness of each component or the selected test part is within the range of measurement.

8. For samples of different thickness, the position of the sample head should be adjusted so that it can better press the sample tightly.

9. Instrument testing is related to atmospheric pressure. It is recommended to check the instrument once every working day.

10. There is a precise sensing element in the air flow measuring cylinder, and the action should be gentle when replacing the nozzle and cleaning, so as to avoid accidents.

11. The air tightness of each sealing joint directly affects the test accuracy, so be careful of contamination, deformation and damage.

12. Select the nozzle number: It is recommended to make the dynamic pressure difference fall within the range of 600~3000Pa to obtain more stable test results.

Fabric breathable tester [Applicable scope] : Fabric breathable tester [Performance Characteristics] :

Fabric breathable performance tester [Technical parameters] :

1. Pressure range: 1 ~ 4000Pa self-setting pressure drop

2. Measurable permeability: 0.2 ~ 12000mm/s

3. Measurement error: ≤±2%

4. Measurable fabric thickness :≤12mm

5. Suction volume regulation: data feedback dynamic regulation

6. Fixed value circle of sample area: 5cm2;

20cm2;

50cm2;

100cm2;

four

7, specimen diameter circle of fixed value: Ф 50 mm (19.6 cm2 material) Ф 70 mm (38.5 cm2 material)

8. Nozzle: 11 PCS in total (digital setting and automatic replacement)

9. Data processing capacity: ≤5000 tests

Data output: LCD in Chinese;

A4 Chinese print;

Computer interface

11 Power source: AC 220V±10V 50Hz

12 Power consumption: 2000W

13 weight: 100Kg

External shape: 700×1000×1000mm(L×W×H)

Fabric breathable performance tester [Product Features] :

I. Application scope of fabric breathable performance Tester:

Similar products are tested according to the old NATIONAL standard (1985), only applicable to general fabrics, and its scope of application is very limited: it cannot meet the requirements of the new NATIONAL standard GB5453-1997

The product performance of our factory fully meets the requirements of GB5453-1997 standard, taking into account the requirements of ISO9237-1995 (E) and other standards. It is applicable to a variety of textile fabrics, including industrial fabrics, woven fabrics for non-fabric breathable performance tester, coated fabrics and other breathable leather, plastic, industrial paper and other chemical products

Ii. Working Principle of fabric breathable performance Tester:

Similar products manually adjust the air intake, manually read the height of water column, look up the table calculation, the error is large, do not meet the new standard.

The pressure difference of both sides of the sample is measured by the high precision electronic pressure sensor, and the air permeability and air permeability are calculated by the computer. The data are measured by the highly sensitive electronic flow meter one by one, and read into the computer memory to ensure the measuring accuracy of the instrument

Three fabric breathable performance tester, test accuracy and measurement range:

The measuring range of similar products is 25mmH2O(water column);

400 mmh2o two gears;

The measuring force precision is generally ±2mmH2O%.

Its comprehensive test accuracy has been unable to adapt to the increasingly strict and diverse testing work. The measuring range of our products can reach 10000Pa.

The measuring force accuracy is ±1Pa(≈ 0.1mmh2O), which can meet the testing requirements of a variety of samples, and its comprehensive testing accuracy is in line with the various testing requirements that are constantly developing at present

Iv. Structure:

The wooden structure of similar products is clumsy and easily damaged

My factory product USES the human body engineering design, the plastic steel whole punching and folding forming table structure, the appearance is beautiful, simple;

Easy to move and durable.