（BEST-121）粉体材料体积表面电阻率测定仪
一、概述
I. overview
粉体材料体积表面电阻率测定仪既可测量高电阻，又可测微电流。采用了美国In公司的大规模集成电路,使仪器体积小、重量轻准确度高。数字液晶直接显示电阻值和电流。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10V/50V/100V/250V/500V/1000V任意可调。适用于橡胶、塑料、薄膜、地毯、织物及粉体、液体、及固体和膏体形状的各种绝缘材料体积和表面电阻值的测定。
This instrument can measure high resistance, and can measure current. The United States In company's large scale integrated circuit, so that the small size, light weight and high accuracy. Digital LCD display resistance value and current. The measurement limit is from 1 * 104 ~ 1 * 1018 *, which is the most widely used digital super high resistance measuring instrument. The current measurement range is 2 * 10-4 ~ 1 * 10-16A. The test voltage 10V/50V/100V/250V/500V/1000V can be adjusted arbitrarily. The instrument has high precision, good stability, fast display, easy reading. All apply to rubber, plastics, film, carpet, fabric and powder, liquid, and solid and pasty insulating material shape determination of volume and surface resistance value.
二、主要特点
Two, the main features
电阻测量范围宽 1×104Ω ～1×1018Ω
Resistance measurement range 1 x 104 x ~ 1 x 1018 ohm
电流测量范围为 2×10-4Ａ ～1×10-16Ａ
The current measurement range is 2 * 10-4A ~ 1 * 10-16A
体积小、重量轻、准确度高
Small size, light weight, high accuracy
电阻、电流双显示
Resistance, current double display
性能好稳定、读数方便
Stable performance, easy reading
所有测试电压(10V/50V/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。既能测超高电阻又能测微电流
All the test voltage (10V/50V/100/250/500/1000V) test resistance results in reading, replacing the old high resistance meter in different test voltage or different scale should be multiplied by the coefficient of the inconvenient trouble, high resistance as the multimeter is used to measure the general resistance of samples is simple to measure. It can measure both the high resistance and the micro current
三、技术指标
Three, technical indicators
1、电阻测量范围： 0.01×104Ω ～1×1018Ω。
1, resistance measurement range: 0.01 x 104 x ~ 1 * 1018.
2、电流测量范围为： 2×10-4A～1×10-16A
2, current measurement range: 2 x 10-4A ~ 1 * 10-16A
3、显 示 方 式：数字液晶显示
3, display mode: Digital LCD display
4、内置测试电压： 10V 、50V、100V、250、500、1000V
4, built-in test voltage: 10V, 50V, 100V, 250, 500, 1000V
5、基本准确度：1% (*注)
5, basic accuracy: 1% (*)
6、使用环境： 温度：0℃～40℃，相对湿度<80%
6, the use of the environment: temperature: 0 DEG C to 40 C, relative humidity <80%
7、机内测试电压： 10V/50V/100/250/500/1000V 任意切换
7, the test voltage: 10V/50V/100/250/500/1000V arbitrary switching
8、供电形式： AC 220V，50HZ，功耗约5W
8, power supply form: AC 220V, 50HZ, power consumption is about 5W
9、仪器尺寸： 285ｍｍ× 245ｍｍ× 120 mm
9, instrument size: 285mm * 245mm * 120 mm
10、质量： 约5KG
10, quality: about 5KG
四、工作原理
Four, working principle
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 Ohm's law, the measured resistance Rx is equal to the applied voltage V divided by the current I. The traditional working principle of high resistance meter is to measure the voltage V fixed, by measuring the current through the sampling resistor I to get the resistance value. From Ohm's law can be seen as the current I is inversely proportional to the resistance, but not proportional, so is nonlinear resistance display value is infinite resistance when the current is zero, which is zero at the header is infinite, the scale near the very dense, low resolution. The whole scale is nonlinear. And because the measurement of different resistance, the voltage V will also have some change, so the ordinary high resistance meter is the poor accuracy, low resolution.
是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。
This instrument is the current flowing through the resistor V and the voltage across the resistor I measured at the same time, the large scale integrated circuit to complete the calculation of the internal voltage divided by the current, and then the results obtained after A/D conversion by the digital display of the resistance value, even if the current voltage V and the flow resistance of the two ends of the I is changed at the same time, the resistance value is not displayed as ordinary high resistance meter as a result of the measured voltage or current change of V I variation, so, even if the measured voltage, the measured resistance and power voltage change has little influence on the results, the measurement accuracy is very high (patent), theoretically the error can be zero, while the actual error can be done a few thousandths or very few.
典型应用
Typical application
1、测量绝缘材料电阻(率)
1, measuring insulation resistance (rate)
2、测量防静电材料的电阻及电阻率
2. Measure the resistance and resistivity of antistatic material
3、测量计算机房用活动地板的系统电阻值
3. Measure the system resistance value of the movable floor of the computer room
4、测量防静电鞋、导电鞋的电阻值
4. Measure the resistance value of anti-static shoes and conductive shoes
5、光电二极管暗电流测量
5, photodiode dark current measurement
6、物理,光学和材料研究
6, physics, optics and materials research
标准配置：
Standard configuration:
1、测试仪器：1台
1, test equipment: 1
2、电源线：1条
2, power line: 1
3、测量线：3根（屏蔽线、测试接线、接地线）
3, measuring line: 3 (shielded wire, test wiring, grounding wire)
4、使用说明书：1份
4, manual: 1 copies
备注：
Remarks：
配不同的测量电极（夹具）可以测量不同材料（固体、粉体或液体）的体积电阻率和表面电阻率或电导率，*符合国家标准GB1410－2006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，ASTM D257 绝缘材料的直流电阻或电导试验方法 等标准要求。
The measuring instrument with different electrode (fixture) can measure different materials (solid, powder or liquid) of the volume resistivity and surface resistivity or conductivity, fully meet the national standard GB1410 - 2006 solid electrical insulation insulation resistance, volume resistivity and surface resistance test method of material ASTM, D257 DC resistance or conductance of insulating materials test methods standard.
