LFY-406A Material Resistivity Tester

Main application
This instrument can be used to measure the surface specific resistance (surface resistivity) and volume specific resistance (volume resistivity) of various fabrics, clothing and other insulating materials, thereby reflecting the electrostatic properties of the tested materials.
Instrument features
This instrument measures using the three-electrode method to test the sample. Its test device mainly consists of a flat electrode device and a high-resistance meter. The basic principle is to apply different voltage levels of direct current to the sample, the weak current flowing through the sample is sampled and amplified by a standard resistor, and then read from the high-resistance meter. The resistance value is directly displayed in numbers, with high accuracy, rapid display, good stability and convenient reading.

Technical indicators
1. Adopting a highly integrated 3 1/2-digit digital display
2. Measuring range: 1×10^5 Ω ～ 9.999×10^14 Ω
3. Test voltages: 100V, 250V, 500V, 1000V
4. Working environment temperature required in the laboratory: (20±2)℃, humidity: (35±10)%RH
5. Within 1-8 hours of stable working voltage and without signal input, the zero point drift of the instrument is less than ±5%
6. Basic error of the instrument for measuring standard resistors: ≤±10%
7. Includes a set of electrodes, standard resistor box, etc.

Applicable standards
GB/T 12703.4-2010 Textiles - Evaluation of static properties - Part 4: Resistivity
DIN 54345 Part 1 "Testing of textiles electrostatic behavior - determination of electrical resistances"
GB/T 6719-2009 Technical requirements for bag-type dust collectors 9.8 Anti-static filter material's anti-static properties
GB/T 27869-2011 Technical requirements for electro-dust composite dust collectors 7.3 Filter material testing methods
HJ/T 324-2006 Technical requirements for environmental protection products - Bag-type dust collectors' filter materials 5.2.1
HJ/T 326-2006 Technical requirements for environmental protection products - Bag-type dust collectors' coated filter materials 5.9
JB/T 8532-2008 Pulse jet type bag-type dust collectors
JB/T 8533-2010 Rotating reverse blowing type bag-type dust collectors standards
JB/T 10341-2002 Bag-type dust collectors
JB/T 10921-2008 Bag-type dust collectors for coal-fired boilers 4.23.1
AQ 1022-2006 Coal mine bag-type dust collectors 5.3.2
MT/T 159-2019 General technical conditions for mine dust collectors
MT 113-1995 General test methods and judgment rules for flame-retardant and anti-static properties of polymer products for use in underground coal mines
JC/T 819-2007 Bag-type dust collectors for cement industry CXBC series 5.2.5.1
GB 12625-1990 Technical conditions for filter materials and filter bags for bag-type dust collectors
JC/T 837-2013 Four-chamber reverse blowing type cleaning bag-type dust collectors 4.1.7 
FZ/T 64082-2021 Filter Material Base Cloth 
GB/T 24249-2009 Anti-static Clean Fabric 
FZ/T 80018-2024  Clothing - Requirements for Anti-static Performance and Test Methods 
GB 31421-2025  Head Protection - Anti-static Work Cap