Volume resistivity tester

 Volume resistivity tester standard configuration: 1. Test equipment: 1 set 2. Power cord: 1 3. Measure line: 3 (shielded cable, test wiring, grounding wire) 4. Instructions: 1 5. Conformity Proof: 1 a volume resistivity tester standard and scope: full compliance with national standard GB1410-2006 solid electrical insulation, resistance, volume resistivity and surface resistivity test method ASTM D257 DC Resistance or Conductance of Insulating Materials Test methods and other standards. The instrument is equipped different measurement electrode (fixture) can be measured in different materials (solid, powder or liquid) volume resistivity and surface resistivity or conductivity. The volume of various insulating materials for rubber, plastics, films, and powders, liquids, and solids and paste the shape and surface resistance values. In addition to the instrument can measure the resistance, but also can directly measure the weak current. Second, the volume resistivity tester Overview This instrument can measure ultra-high resistance, but also to measure very weak currents. LSI and uses the latest patented technology, the equipment is small, light weight, high accuracy. Digital LCD display resistance while direct current flowing through the measured resistance. Resistance range from 1 × 104Ω ~ 1 × 1018Ω, current measurement range is 2 × 10-4A ~ 1 × 10-16A. In test voltage is DC10V, 50V, 100V, 250V, 500V, 1000V. The instrument has high accuracy, fast display, good stability, easy reading for Static Control Products such as anti-static shoes, anti-static plastics and rubber products inspection, anti-static floor computer room and other resistance values ??as well as insulating materials and electrical and electronic products The insulation resistance measurement. Third, the volume resistivity tester technical indicators 1. resistance measurement range: 1 × 104Ω ~ 1 × 1018Ω, divided into ten range. 2. The current measurement range is 2 × 10-4A ~ 1 × 10-16A 3. Digital LCD display. 4. Accuracy: The accuracy is better than in the following table: measuring range of the effective display range 20 ~ 30 ℃ RH <80% 104 0.01 ~ 19.99 1% 105 0.01 ~ 19.99 1% 106 0.01 ~ 19.99 1% 107 0.01 ~ 19.99 1% 108 0.01 1% 109 0.01 ~ 19.99 ~ 19.99 ~ 19.99 0.01 1% 1010 5% 1011 + 2 words 5% + 0.01 to 19.99 0.01 to 19.99, 2 1012, 5 + 5% 1013 + 10% from 0.01 to 19.99 0.01 to 19.99, 5 1014 10% + 5 Word 1014 from 0.01 to 19.99 over 10-15% + 5 characters (beyond the range of the effective display errors are likely to increase) test current test voltage accuracy and the same degree of resistance is 10% accurate 5. Environment: Temperature -10 ℃ ~ 50 ℃ Relative humidity <90%. 6. Test voltage: DC10V, 50V, 100V, 250V, 500V, 1000V. ± 10% 7. Power form: AC 220V, 50HZ, power consumption of about 10W. 8. Instrument size: 300mm × 280mm × 150 mm. 9. Quality: about 3.0KG. Works according to Ohm's law, the measured resistance Rx equal to the current divided by the applied voltage V I. Traditional high impedance meter works by measuring the voltage V is fixed, by measuring the current flowing through the sampling resistor I used to get resistance. From Ohm's Law, since the current I is inversely proportional to the resistance, rather than proportional, the display value of the resistor is nonlinear, i.e., infinite resistance when the current is zero, i.e., at the zero position of the header is ∞, which Nearby scale very dense, low-resolution whole scale is nonlinear. Also, because the measurement of different resistances, the voltage V will be some variation, so the ordinary high resistance meter accuracy is poor, low resolution. After BEST121 digital impedance meter is measured simultaneously the voltage V across the resistor and the current flowing through the resistor I, to complete the calculation of the voltage divided by the current through the interior of large scale integrated circuits, and the results obtained through the A / D converter In figures show that the resistance value, even if the voltage V across the resistor and the current I flowing through the resistor is changed simultaneously, the resistance value of the display is not as common as a result of high resistance meter measured voltage V changes or changes in the current I becomes, therefore, even if the measurement voltage, the resistance is measured, the power supply voltage changes little effect on its high measurement accuracy (patent), in theory the error can be zero, but the actual error can be done thousandths or very few. Fourth, the volume resistivity tester uses 6.1 connect the power cord to ensure the supply of 220VAC / 50Hz 6.2 power will be placed in the current resistance range 104 stalls, put voltage range 10V, then boot. 6.3 In the case of zero "Rx" open at both ends, and zero ammeter display 0000 Note: In the "Rx" is not open at both ends, as connected to the resistance measuring box or measured after zero when the object produce large errors. Generally after the first zero in the testing process without further zero. After the completion of the shutdown. 6.4 connection lines connect the test line, the test line will connect the host and shielding box, measured when the test button is appropriated volume resistivity Rv side, when the test button is appropriated for measuring surface resistance Rs edges. Then boot. 6.5 Select the appropriate measure voltage ★ voltage selector switch on the rear panel, note that during the test should not tamper with the measured voltage, may be due to excessive voltage or current is too large damage to the device under test or test equipment; 6.6 from the low-grade test and measurement Bit gradually pull to upscale, stay a little time aside every 1 to 2 seconds to make the observation display numbers, when measured resistance is greater than the range of instruments to measure the resistance meter shows "1", and you should continue to be appropriated for the instrument range higher position, when the measuring instrument has displayed value should be stopped, the current figure is multiplied by the grade that is the measured resistance value. When a display numbers do not go down to the higher speed dialing times, whether measured over the range of the instrument, the protection circuit to work, the instrument measurement accuracy will drop the machine. 6.7 test is completed the current range pull resistance to the "104" position, after turning off the power voltage range 10V ★ adjusted once every measure should span the range switch back to position 104 "zero" position in order to avoid short circuit switched or measurements sometimes damage the instrument. By Ohm's law to measure the voltage divided by current and 1015Ω above 6.8 ultrahigh resistance measurement applications current calculation method to measure current resistance, as described in 8.5 content. 6.9 volume resistivity and surface resistivity conversion ★ During testing, the use of shielded box when making the volume resistivity and surface resistivity conversion, must be carried out after the power-off stall converter, otherwise it will lead to voltage shock or damage to the host can not be displayed. Contact: Yao Wei 139-1077-5627 / 010-5330-5279