体积电阻率表面电阻率测定仪
Volume resistivity surface resistivity meter
数字超高阻、微电流测量仪
Digital high megohm, micro electric current measuring instrument
一、概述
A, an overview of the
本仪器是既可测量高电阻，又可测微电流。采用了美国In公司的大规模集成电路以及技术,使仪器体积小、重量轻、准确度高。以双3.1/2 位数字直接显示电阻的高阻计和电流。量限从1×104Ω ～1×1018 Ω，是目前国内测量范围zui宽，准确度zui高的数字超高阻测量仪。电流测量范围为2×10-4 ～1×10-16Ａ。机内测试电压为10/50/100/250/500/1000V任意可调。本仪器具有精度高、显示迅速、性好稳定、读数方便， 适用于防静电产品如防静电鞋、防静电塑料橡胶制品、计算机房防静电活动地板等电阻值的检验以及绝缘材料和电子电器产品的绝缘电阻测量。本仪器除能测电阻外，还能直接测量微弱电流。
The instrument can measure high resistance, and micro electric current can be obtained. American In company of large scale integrated circuit is adopted, and patent technology, make the instrument is small in size, light weight, high accuracy. With double 3.1/2 digit indicates the current high resistance meter and resistance directly. Quantity limit from 1 x 104 Ω ~ 1 x 1018 Ω, is currently the domestic most wide measuring range, accuracy of the highest Numbers high resistance meter. Current measuring range is 2 x 1 x 10-10-4 ~ 16 a. Built-in test voltage for 10/50/100/250/100/250 v arbitrary adjustable. The instrument has high precision, display quickly, good stability, easy reading, applied to anti-static products such as anti-static shoes, anti-static plastic rubber products, such as anti-static raised floor computer room resistance test and insulation resistance measurements of insulation materials and electrical and electronic products. The instrument besides can measure resistance, but also can directly measure the weak current.
仪*符合并优于国家标准GB1410《固体电工绝缘材料绝缘电阻、体积电阻系数和表面电阻试验方法》和美国标准ASTM D257《绝缘材料的直流电阻或电导试验方法》等标准的要求。
Instrument fully meet and exceed national standards GB1410 the insulation resistance of solid electrical insulating materials, volume resistivity and surface resistivity test method, and the American standard ASTM D257 \"dc resistance or conductance method for insulation materials, etc. Standard requirements.
二、主要特点
Second, the main characteristics
电阻测量范围宽 0.01×104Ω ～1×1018 Ω
Resistance measurement of a wide range of 0.01 x 104 Ω ~ 1 x 1018 Ω
电流测量范围为 2×10-4Ａ ～1×10-16Ａ
Current measuring range is 2 x 10-4 a ~ 1 x 10 to 16 a
体积小、重量轻、准确度高
Small volume, light weight, high accuracy
电阻、电流双显示
Resistance, current double display
性能好稳定、读数方便
Good performance stability, easy reading
所有测试电压（10/50/100/250/500/1000V） 测试时电阻结果直读，免去老式高阻计在不同测试电压下或不同量程时要乘以系数等使用不便的麻烦， 使测量超高电阻就如用万用表测量普通电阻样简便。
All test （10/50/100/250/100/250 v） voltage resistance test results, direct reading from the old high resistance meter or different under different voltage range, difficult to use when multiplied by the coefficient of trouble, make measure ultra-high resistance as ordinary resistance is measured with a multimeter sample is simple.
既能测超高电阻又能测微电流
Both can measure high resistance and can measure micro electric current
适用范围广:适用于防静电产品如防静电鞋、防静电塑料橡胶制品、计算机房防静电活动地板等电阻值的检验和电子电器产品的绝缘电阻测量
Wide applicable scope: is suitable for the anti-static products such as anti-static shoes, anti-static plastic rubber products, anti-static raised floor computer room resistance test and electrical and electronic products such as insulation resistance measurement
三、技术指标
Third, technical indicators
1.电阻测量范围： 0.01×104Ω ～1×1018Ω。
1. Resistance measuring range: 0.01 x 104 x 1018 Ω Ω ~ 1.
2.电流测量范围为: 2×10-4A～1×10-16A
2. The current measuring range is: 2 x 10-4 a ~ 1 x 10 to 16 a
3. 双表头显示: 3.1/2位LED显示
3. Double header shows: 3.1/2 LED display
4. 内置测试电压： 10V、50V、100V、250、500、1000V
4. Built-in test voltage: 10 v and 50 v, 100 v, 250, 500, 100 v
5. 基本准确度：1% （*注）
5. The basic accuracy: 1% （*）
6 使用环境: 温度：0℃～40℃，相对湿度<80%
6 using the environment temperature: 0 ℃ to 40 ℃, relative humidity of < 80%
7 机内测试电压: 10/50/100/250/500/1000V 任意切换
Test voltage within 7 machine: 10/50/100/250/100/250 v arbitrary switching
8.供电形式: AC 220V，50HZ，功耗约5W
8. Power supply: AC 220 v, 50 hz, power consumption of about 5 w
四、工作原理
Four, principle of work
根据欧姆定律，被测电阻Rx等于施加电压V除以通过的电流I。传统的高阻计的工作原理是测量电压V固定，通过测量流过取样电阻的电流I来得到电阻值。从欧姆定律可以看出，由于电流I是与电阻成反比，而不是成正比，所以电阻的显示值是非线性的，即电阻无穷大时，电流为零，即表头的零位处是∞，其附近的刻度非常密，分辨率很低。整个刻度是非线性的。又由于测量不同的电阻时，其电压V也会有些变化，所以普通的高阻计是精度差、分辨率低。
According to the ohm's law, the resistance to be measured the Rx is equal to the applied voltage V divided by the current through the I. Traditional high resistance meter work principle is to measure the voltage V is fixed, the current through the sample resistance by measuring the I to get resistance. From ohm's law can be seen that due to the current I is inversely proportional to the resistance, and is not proportional to, so the display value of resistance is nonlinear, the resistance is infinite, the current is zero, namely the header of the zero level is up, the scale is very near, the resolution is very low. The whole scale is nonlinear. Again due to the different resistance measurements, the voltage V is also will have some change, so ordinary high resistance meter is of poor precision and low resolution.
同时测出电阻两端的电压V和流过电阻的电流I，通过内部的大规模集成电路完成电压除以电流的计算，然后把所得到的结果经过A/D转换后以数字显示出电阻值，即便是电阻两端的电压V和流过电阻的电流I是同时变化，其显示的电阻值不象普通高阻计那样因被测电压V的变化或电流Ｉ的变化而变，所以，即使测量电压、被测量电阻、电源电压等发生变化对其结果影响不大，其测量精度很高（），从理论上讲其误差可以做到零，而实际误差可以做到千分之几或万分之几。
And resistance is measured at each end of the current through the resistor voltage V and I, through the internal voltage divided by the current calculation of large scale integrated circuit is complete, then put the results after A/D conversion to digital shows resistance, even at the ends of the resistance current through the resistor voltage V and I are changing at the same time, the display of the resistance value is not like ordinary high resistance meter by measuring the change in the voltage V or current I change and change, so, even if the measurement of voltage, by measuring the resistance change, power supply voltage, etc. The results, the measuring accuracy is very high （patent）, in theory, the error can be zero, and the actual error can be done A few parts per thousand or very few.
典型应用
Typical applications
1．测量防静电鞋、导电鞋的电阻值
1. Measure the anti-static shoes, conductive resistance value
2、测量防静电材料的电阻及电阻率
2, measuring resistance and resistivity of antistatic materials
3、测量计算机房用活动地板的系统电阻值
3, computer room measured in raised floor system resistance value
4、测量绝缘材料电阻（率）
4, measuring insulation resistance （rates）
5、光电二极管暗电流测量
5, photoelectric diode dark current measurement
6、物理,光学和材料研究
6, physics, optics and materials research
