High Temperature Volume and Surface Resistivity Tester

High Temperature Volume and Surface Resistivity Tester This standard applies to the determination of the volume resistivity of liquid plasticizers. Other liquid additives may also refer to this testing method.
GB/T 15738-2008 Test Method for Resistivity of Conductive and Antistatic Fiber Reinforced Plastics
GB 12158-2006 General Guidelines for Preventing Electrostatic Accidents
GB/T 10580-2003 Standard Conditions for Use Prior to and During the Testing of Solid Insulating Materials (IEC 60212:1971, IDT) IEC 60260:1968 Test Cabinets with Non-Injection Constant Relative Humidity 3 Definitions
GB 1672-8 Determination of Volume Resistivity of Liquid Plasticizers
GB 26539-2011 Antistatic Ceramic Tiles

High Temperature Volume and Surface Resistivity Tester When the resistance value is greater than 10^10 Ω, the measurement error is less than ±20%; when the resistance value is equal to or less than 10^10 Ω, the measurement error should be less than ±10%. Zero drift should not exceed 4% of the full scale per hour.
Subject Content and Scope of Application
GJB 3007A-2009 Technical Requirements for Antistatic Work Areas

High Temperature Volume and Surface Resistivity Tester The following requirements should be met during high resistance meter testing:
GB/T 12703.6-2010 Textiles - Evaluation of Electrostatic Properties - Part 6: Fiber Leakage Resistance
GB/T 1410-2006 "Test Methods for Volume Resistivity and Surface Resistivity of Solid Insulating Materials"
Note 2: Usually, the current mainly flows through a surface layer of the sample, but it also includes the portion flowing through the sample volume. Surface resistivity
GB 12014 Antistatic Workwear
Sample liquid plasticizer sample, approximately 40ml each time.
The quotient of the DC voltage applied between two electrodes placed on two opposite surfaces of the sample and the steady-state current flowing between these two electrodes, excluding the current along the sample surface, with possible polarization on the electrodes ignored.
GB/T 22043-2008 Clothing - Antistatic Properties - Test Method for Resistance Through Material (Vertical Resistance)
During testing, the voltage applied to the sample is a DC voltage of 100 to 1000V.
GJB 105-1998-Z Handbook for Electrostatic Discharge Control in Electronic Products
GB/T 26825-2011 Antistatic Anticorrosive Adhesive
The quotient of the DC electric field strength within the insulating material and the steady-state current density, i.e., the volume resistance per unit volume. Note: The SI unit of volume resistivity is Ω·m. In practice, Ω·cm is also used.
The measurement range of the high resistance meter should include 1×10^6 to 1×10^16 Ω.
ASTM D257-99 "Standard Test Methods for DC Resistance or Conductance of Insulating Materials"
GB 13348-2009 Safety Regulations for Electrostatics in Liquid Petroleum Products
Testing Instruments and Electrodes High Resistance Meter
GB/T 22042-2008 Clothing - Antistatic Properties - Test Method for Surface Resistivity
The quotient of the voltage applied between two electrodes on the surface of the sample and the current flowing between the two electrodes during a specified electrification time, with possible polarization on the electrodes ignored.
GB 4655-2003 Safety Regulations for Electrostatics in the Rubber Industry
This standard specifies the method for determining the volume resistivity of liquid plasticizers.
Note 1: Unless otherwise specified, surface resistance is measured after one minute of electrification.
GB 4385-1995 Technical Requirements for Antistatic Shoes and Conductive Shoes
Note: Unless otherwise specified, volume resistance is measured after one minute of electrification. 3.2
GB/T 1410-2006 Solid Insulating Materials - Test Methods for Volume Resistivity and Surface Resistivity
GB 50515-2010 Design Code for Conductive (Antistatic) Floors
GB 50611-2010 Design Code for Electrostatic Protection in Electronic Engineering
Pour the treated sample into the high-voltage electrode so that the liquid level just fully contacts the measuring surface. Testing is conducted in an environment with a temperature of 23±2°C and relative humidity of 60% to 70%.
GB/T 18864-2002 Vulcanized Rubber - Antistatic and Conductive Products for Industrial Use - Resistance Limits
The quotient of the DC electric field strength in the surface layer of the insulating material and the linear current density, i.e., the surface resistance per unit area. The size of the area is not important.
GB/T 20991-2007 Personal Protective Equipment - Test Methods for Footwear
Volume resistivity
Surface resistance
The following definitions apply to this standard.
GB/T 1692-2008 Determination of Insulation Resistance of Vulcanized Rubber
GB/T 24249-2009 Antistatic Cleanroom Textiles
Volume resistance
GB/T 18044-2008 Carpets - Evaluation of Electrostatic Behavior - Walking Test
Electrodes should be made of brass or stainless steel. The inner diameter of the high-voltage electrode is 146mm, the outer diameter of the measuring electrode is 120mm, the guard ring width is 8mm, the gap between the measuring electrode and the high-voltage electrode is 2mm, and the surface roughness of the electrode working face is 1.6 or below. The shape and dimensions of the electrodes are shown in Figure 1. Test steps
Volume resistivity is defined as the ratio of the DC electric field strength in the direction of the volume current to the current density at that point, expressed in Ω·m.
The sample should be free of bubbles and impurities. The sample should be conditioned at a temperature of 23±2°C and relative humidity of 60% to 70% for more than 2 hours.
GJB 5104-2004 General Requirements for Antistatic Coatings and Electrostatic Properties of Windshields for Radio Fuzes
The insulation resistance of the input wiring should be more than 100 times the input resistance of the instrument. The instrument should be calibrated regularly.
Note: The SI unit of surface resistivity is Ω. In practice, it is sometimes expressed as ohms per square.