Point Resistance Tester - China

The point-to-point resistance tester is used to detect the point-to-point resistance rate of anti-static work clothes, which is suitable for class A and b-class anti-static work clothes.

The principle is to add test voltage 100 V to test samples for total 15 s.

The weak current flowing through the sample is sampled and amplified by the standard resistance and read on the high impedance meter.

The figures show the resistance value directly, with high accuracy, quick display, good stability and easy reading.

Operation Principle According to ohm's law, the tested resistance Rx is equal to the applied voltage V divided by the current I.

The traditional high impedance meter works by measuring the fixed voltage V, and the resistance value is get by measuring the current I that flows through the sampling resistor.

As can be seen from the ohm's law, since the current (I) is inversely proportional to the resistance rather than directly proportional, so the display value of resistance is nonlinear.

Namely when the resistance is infinite, the current is zero, and the zero level at the header is ∞.

The scale interval is very close with a very low resolution, so the whole scale is nonlinear.

The voltage V also changes due to the measurement of different resistance, so the normal high resistance meter is low in accuracy with low resolution.

The point-to-point resistance tester measures the voltage V at the two ends of the resistance and the current I flowing through the resistor at the same time.

Through the large scale integrated internal circuit, the calculation of voltage divided by the current is completed.

Then, the results obtained through A/D conversion shows digital resistance value.

Even though the voltage V at the two ends of the resistance and the current I flowing through the resistor change at the same time, the displayed resistance value will not change like the ordinary high resistance meter subject to the change of the tested voltage V and the current I.

So, even if the measured voltage, the measured resistance and power voltage change, it has a little influence on the results.

The accuracy is very high (patent), and theoretically the error can be zero, and the actual error can achieve parts per thousand or parts per ten thousand.

Standards GB12014-2009, GB/T 1410-2006, ASTM D257-99, GB/T 10581­2006, GB/T 1692­2008, GB/T 2439­2001, GB/T 12703.4­2010, GB/T 10064­2006, GB/T 22042­2008, EN 1149­1­1995, GB/T 1410­2006.

Company Contact:

• Posted By: Qinsun Instruments (Shanghai) Co., Ltd.

• Phone: +862164200566

• Address: No. 2578 Minhang District Gu Dai Road, Shanghai, Shanghai , shanghai , China

• Email:

• Website: https://www.qinsun-lab.com

• Business Description: Qinsun Instruments Co., LTD was founded in 2010, comprised of many experienced engineers and designers standing in the forefront of the industry.
  
  Qinsun specialize in the research and development of high quality lab instrument for textile testing industry.
  
  Our head office in Shanghai and we provide high quality testing instrument and comprehensive service for textile factory, academic research institute and textile lab worldwide.
  
  We have our own textile testing lab.
  
  Our textile testing methods and testing equipment are in the leading position in the industry and have passed the textile testing certification and iso textile testing standards issued by a number of testing.
  
  We always develop the highly sophisticated test instrument which can meet the various demands of the textile industry.
  
  We provide the upfront Micro weathering test equipments with our own brand name QINSUN, such as thermal resistance wet resistance meter, MMT(moisture management tester) etc, and the new functional test instrument include air permeability tester, hydrostatic head tester, thermal protection performance tester, as well as the widely used lab testing equipment such as textile washing color fastness tester, abrasion tester, pilling tester, rubbing color fastness tester, ironing tester and perspiration tester.
  
  For the laboratory requirements, we also bring forth the new practical test instruments.
  
  Qinsun products include: fabric test equipment, Textile Fabric Tester, fiber tester, yarn tester, carpet tester, non-woven fabric tester, toy tester, leather tester, automotive material test equipment and others.