产品名称：橡塑材料体积电阻及体积电阻率测试仪
Product Name: Volume surface resistance tester
产品型号：ZST-121
Item No: ZST-121
符合国标：GB/T1410-2006 ASTM D257-99
In line with the national standard: GB/T1410-2006 ASTM D257-99
测量范围：0.01×104Ω～1×1018Ω
Measuring range: 0.01 x 104 x ~ 1 * 1018
显示方式：液晶显示、直读电阻、电流
Display: LCD display, direct reading resistor, current
测试方法：三电极法
Test method: three electrode method
符合标准：
Meet the standard:
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》
GB1410 test method for insulation resistance, volume resistivity and surface resistivity of solid electrical insulating materials
ASTM D257《绝缘材料的直流电阻或电导试验方法》
ASTM D257 test methods for DC resistance or conductance of insulating materials
一、概述
I. overview
橡塑材料体积电阻及体积电阻率测试仪既可测量高电阻，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。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。固体绝缘材料体积/表面电阻率测定仪除能测电阻外，还能直接测量微弱电流。
Can measure high resistance, but also can measure the electric current. The United States In company's large scale integrated circuit, so that the small size, light weight, high accuracy. High resistance meter and current with dual 3.1/2 digit direct display resistor. 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 of the machine is 10/50/100/250/500/1000V adjustable. The instrument has high precision, good stability, fast display, easy reading, application of insulation resistance measurement in anti-static products such as anti-static shoes, anti-static plastic rubber products, computer room inspection anti electrostatic floor activities such as resistance and insulating materials electrical and electronic products. Solid insulation material volume / surface resistivity meter can measure the resistance, but also can directly measure the weak current.
三、技术指标
Three, technical indicators
1    电阻测量范围    1×104Ω ～1×1018Ω
1 resistance measurement range 1 x 104 x ~ 1 * 1018
2    电流测量范围    2×10-4A～1×10-16A
2 current measurement range 2 x 10-4A ~ 1 * 10-16A
3    双表头显示    3.1/2位LED显示
3 dual header display 3.1/2 bit LED 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    2%
5 basic accuracy 2%
6    使用环境    温度：0℃～40℃，相对湿度<80%
6 use the ambient temperature: 0 degrees C to 40 C, relative humidity <80%
7    机内测试电压    10/50/100/250/500/1000V 任意切换
7 internal test voltage 10/50/100/250/500/1000V 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2.5KG
10 mass of about 2.5KG
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。
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 changes in the measured voltage or current change of V and I, so even if the measurement voltage, the measured resistance and power voltage change has little influence on the results, the measuring accuracy is very high (patent), according to the theory of the error can do zero, while the actual error can be done a few thousandths or very few.
典型应用
Typical application
1．测量防静电鞋、导电鞋的电阻值
1 measure the resistance value of anti-static shoes and conductive shoes
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、测量绝缘材料电阻(率)
4, measuring insulation resistance (rate)
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    台    1
1 test instrument 1
2    电源线    条    1
2 power cord 1
3    测量线    根    3
3 line root 3
4    使用说明书    份    1
4 instruction manual 1