Insulation material volume surface area resistivity tester use method
Applicable standards : GB/T 22042-2008 "Test method for surface resistivity of antistatic performance of clothing"
; EN 1149-1-1995 "Electrical properties of protective clothing - Part 1 - Methods and requirements for surface resistance testing";
GB/T 1410-2006 "Test method for volume resistivity and surface resistivity of solid insulating materials" (equivalent to international standard IEC93-1980);
FZ/T 64013-2008 "Electrostatic flocking plush";
SJ/10694-2006 "General Specifications for Anti-Static Testing of Electronic Product Manufacturing and Application Systems"
ASTM D257 "Test Method for DC Resistance or Conductance of Insulating Materials"
GB/T 2439-2001 "Determination of electrical conductivity and dissipative properties of vulcanized rubber or thermoplastic rubber" GB/T 10581-2006 "Test method for resistance and resistivity of insulating materials at high temperatures"
GB/T 1692-2008 "Determination of insulation resistance of vulcanized rubber"
GB/T 12703.4-2010 "Evaluation of electrostatic properties of textiles - Part 4: Electrical resistivity"
GB/T 10064-2006 "Test method for determining insulation resistance of solid insulating materials".
Specific parameters:
1. Resistance measurement range: 0.01×104Ω～1×1018Ω.
2. The current measurement range is: 2×10-4A～1×10-16A
3, display mode: touch screen display
4, built-in test voltage: 0-1000V stepless adjustable
5. Basic accuracy: 1% (*Note)
6, the use of the environment: Temperature: 0 ° C ~ 40 ° C, relative humidity <80%
7, the test voltage inside the machine: 0-1000v arbitrary switching
8, power supply form: AC 220V, 50HZ, power consumption of about 5W
9, instrument size: 285mm × 245mm × 120 mm
10, quality: about 2.5KG
The instrument can measure both high resistance and micro current. The large-scale integrated circuit of Intel Corporation of the United States is adopted to make the instrument small in size, light in weight and high in accuracy. The digital liquid crystal directly displays the resistance value and current. The measurement range is from 1×104Ω to 1×1018 Ω. It is the digital ultra-high resistance measuring instrument with the widest measurement range and the highest accuracy in China. The current measurement range is 2×10-4 to 1×10-16A. The internal test voltage is adjustable from 0 to 1000V. The instrument has high precision, quick display, good stability and convenient reading, and is suitable for measuring the volume and surface resistance of various insulating materials in the shape of rubber, plastic, film, powder, liquid, and solid and paste. In addition to measuring resistance, the instrument can directly measure weak current .
Resistance measurement range is 0.01×10 4 Ω～1×10 18 Ω
Current measurement range is 2 × 10 -4 A to 1 × 10 -16 A
Small size, light weight, high accuracy, high resistance, double current display performance, convenient reading, easy reading of all test voltages 0-1000V test results, eliminating the need for old high-resistance meters to be tested at different test voltages or different ranges Inconvenient troubles such as the use of coefficients, etc., making measuring ultra-high resistance is as simple as measuring a common resistance with a multimeter.
Can measure ultra high resistance and micro current
Design principle:
According to Ohm's law, the measured resistance Rx is equal to the applied voltage V divided by the passing current I. The conventional high resistance meter works by measuring the voltage V fixed and measuring the current flowing through the sampling resistor to obtain the resistance value. It can be seen from Ohm's law that since the current I is inversely proportional to the resistance, not proportional, the display value of the resistance is non-linear, that is, when the resistance is infinite, the current is zero, that is, the zero position of the meter is ∞, The nearby scale is very dense and the resolution is very low. The entire scale is non-linear. Moreover, since the voltage V is also changed somewhat when measuring different resistances, the ordinary high resistance meter has poor precision and low resolution.
The instrument simultaneously measures the voltage V across the resistor and the current I flowing through the resistor. The voltage is divided by the current calculation by the internal large-scale integrated circuit, and then the obtained result is digitally displayed after A/D conversion. The resistance value, even if the voltage V across the resistor and the current I flowing through the resistor change simultaneously, the resistance value displayed is not changed by the change of the measured voltage V or the current I as in the ordinary high resistance meter. Even if the measured voltage, the measured resistance, the power supply voltage, etc. change little, the measurement accuracy is very high, and the theoretical error can be zero, and the actual error can be a few thousand or ten thousand. a few.
Use environment:
Temperature: 0 ° C ~ 40 ° C, relative humidity <80%. Power supply 220v power 10w.
Standard configuration:
1. Test equipment: 1 set
2. Power cord: 1
3. Measuring line: 3 (shield line, test wiring, grounding wire)
4. Instruction manual: 1 part
Preparation before the test :
1. Prepare 220v power supply.
2. Put the sample in the environment required by the national standard (according to the requirements of different samples, put the sample in a constant temperature and humidity environment, it is recommended to put the sample in the constant temperature and humidity test chamber. .)
3 The insulating material after the test cannot be immediately tested on the electrode. Since the sample after the test is electrified, the surface resistance of the sample after electroforming will vary. The error between the test results and the original results are quite different.
4. Find a good ground wire installation and install the ground wire. (The resistance test of volume surface area is greatly affected by the surface stray current. In order to make the test more accurate, the influence of stray current should be avoided as much as possible.)
Preparation of specific samples before testing according to GB-T10580 conditions .
start testing:
1. According to the wiring of the instrument, connect the line and connect the ground wire.
2. Take the treated sample out of the constant temperature environment, place the sample in the middle of the electrode in the shielding box, and place the sample as far as possible from the high-voltage charged device to prevent the electrochemical effect from affecting the test result.
3. After the sample is placed, turn on the power switch and test according to the specified voltage position according to the requirements of the national standard.
4. Adjust the resistance gear position. When there is a value on the screen, stop the resistance gear position. (Because the current or voltage fluctuation will cause the resistance to be unstable, when 1 minute, the reading is the resistivity of the volume surface area). Record the resistance. Turn the voltage gear to zero or turn off the power. Take out the sample. (Note: The maximum internal voltage of the instrument is 1000v to prevent danger. When removing the sample, turn off the power.)
Result processing:
In order to accurately determine the experimental results, five sets of samples were prepared and the average value was taken.
When the same piece of sample needs to be measured twice, it needs to be discharged under the environment required by the national standard.
Record the test results. If there is special pre-experimental treatment, it should be marked on the experimental report.
After sales and repair:
1. Provide instructions, transportation, and remote guidance.
2. After the test equipment arrives at the buyer, test the sample provided by the user and provide a test report.
3. Training: After the buyer's instrument is received, the seller will use it for installation and installation. After the training of the applicable party, the basic principles of the equipment, software operation, use, maintenance equipment and applications can be consulted. If there is any understanding of the operation or equipment maintenance, you can consult the company at any time . The company will have special technicians. Answer it for you.
4, software upgrade: free new operating software for life.
warranty service:
1. The warranty period of the equipment is 3 years, lifetime after-sales service. When the user determines the fault, it will solve the problem within 1 hour. If it can't be solved, our company will send the engineer to the site for free service within 48 hours to find out the fault. The reason is that the user will report the cause and troubleshooting of the fault in time to ensure the normal use of the device.
2. If the warranty period is not man-made damage, the purchase price (processing) will be charged.
3. After the warranty period expires, continue to provide users with quality service. After receiving the user maintenance invitation, the engineer will be sent to the site for maintenance within 2 days.
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