Fabric breathability tester test debugging and operation steps

Fabric breathability tester is suitable for a variety of textiles including industrial fabrics, nonwovens, other breathable products such as sponges and paper and other highly breathable materials testing, is Shanghai Qianshi Precision Electromechanical Technology Co.
, Ltd.
independent research and development of test equipment, cost-effective, complete
after-sales service.

Test principle: the pre-treated specimen is placed between the upper and lower test chambers, clamped, first of all, the low pressure chamber (lower chamber) for vacuum treatment, and then vacuum the entire system, when the specified vacuum level is reached, close the test lower chamber, fill the high pressure chamber (upper chamber) with a certain pressure test gas, and ensure that a constant pressure difference (adjustable) is formed on both sides of the sample, so that the gas will penetrate from the high pressure side to the low pressure side under the action of the differential pressure gradient.
By monitoring the internal pressure on the low pressure side, the blocking parameters
of the tested sample are obtained.

Test debugging: 1, the instrument should be leveled before working, the specific operation is to rotate the adjustable foot to make the instrument level
.

2.
Check whether the specimen fixed value ring is tightened and whether the airtight ring is close to the two joint surfaces
.

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

4.
Check whether the suction hose and the flow cylinder are tightly
connected.

5.
Check whether the door cover and door lock on the flow cylinder can be covered tightly
.

6.
Check whether the printer is online
correctly.

7.
Correction
.

8, check whether the instrument is leaking: use a non-hole plate instead of a correction plate for testing, the air permeability screen display value is 0 (allowed to beat below 10Pa) for no leakage, otherwise a part of the instrument leaks, should be checked and adjusted
.

Operation steps: 01, prepare the specimen as required and cut into the specified size
.

02.
Select the specimen fixed value ring and install it on the
instrument.

03.
Select the nozzle
.

04.
Turn on the power supply
of the instrument.

05.
Set
the parameters.

06.
Press the start button and the instrument starts
.

07.
The instrument automatically compresses the specimen, starts the test, and when the set pressure difference is reached, the specimen is automatically released, and the instrument automatically converts the test result and stops
.

08, the next piece of specimen test, until the effective number of tests to meet the requirements (the number of times the display is currently the first test) according to GB/T 5453-97 for data processing
.

09.
The test results can be observed on the air permeability/differential pressure display and can also be printed
.

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