ZST-121橡膠的體積表面電阻檢測儀器

GB1410《固體電工絕緣材料絕緣電阻、體積電阻系數(shù)和表面電阻試驗方法》
GB1410 "test method for insulation resistance, volume resistance coefficient and surface resistance of solid electrical insulating materials"
AST D257《絕緣材料的直流電阻或電導(dǎo)試驗方法》
Test method for DC resistance or conductance of insulating materials by D257 ASTM
一、概述
First, an overview
橡膠的體積表面電阻檢測儀器既可測量高電阻，又可測微電流。采用了美國In公司的大規(guī)模集成電路,使儀器體積小、重量輕、準(zhǔn)確度高。以雙3.1/2 位數(shù)字直接顯示電阻的高阻計和電流。量限從1×104Ω ～1×1018 Ω，是目前國內(nèi)測量范圍zui寬，準(zhǔn)確度zui高的數(shù)字超高阻測量儀。電流測量范圍為2×10-4 ～1×10-16Ａ。機(jī)內(nèi)測試電壓為10/50/100/250/500/1000V任意可調(diào)。具有精度高、顯示迅速、性好穩(wěn)定、讀數(shù)方便， 適用于固體絕緣材料體積/表面電阻率測定儀除能測電阻外，還能直接測量微弱電流。
Can measure high resistance, and measuring current. Large scale integrated circuit of In company is adopted, which makes the instrument small size, light weight and high accuracy. High resistance meter and current with dual 3.1/2 bit digital direct display resistance. The measurement range is from 1 * 104 to 1 * 1018, which is the most wide measurement range and the highest accuracy. The current measurement range is 2 * 10-4 ~ 1 * 10-16A. The test voltage of the machine is adjustable for 10/50/100/250/500/1000V. The instrument has the advantages of high accuracy, rapid display, good stability, convenient reading, which is suitable for the volume of solid insulation material volume / surface resistivity measuring instrument in addition to measuring resistance, but also can directly measure the weak current.
三、技術(shù)指標(biāo)
Three, technical indicators
序號    項目    參數(shù)
Item parameters
1    電阻測量范圍    1×104Ω ～1×1018Ω
1 resistance measurement range 1 * 104 ~ 1 * 1018
2    電流測量范圍    2×10-4A～1×10-16A
2 current measurement range 2 * 10-4A ~ 1 * 10-16A
3    雙表頭顯示    3.1/2位LED顯示
3 double headers 3.1/2 LED display
4    內(nèi)置測試電壓    10V、50V、100V、250、500、1000V
4 built in test voltage 10V, 50V, 100V, 250, 500, 1000V
5    基本準(zhǔn)確度    2%
5 basic accuracy 2%
6    使用環(huán)境    溫度：0℃～40℃，相對濕度<80%
6 using ambient temperature: 0 degrees Celsius to 40 degrees Celsius, relative humidity <80%
7    機(jī)內(nèi)測試電壓    10/50/100/250/500/1000V 任意切換
7 machine test voltage 10/50/100/250/500/1000V arbitrary switching
8    供電形式    AC 220V，50HZ，功耗約5W
8 power supply form 220V 50HZ, AC, power consumption is about 5W
9    儀器尺寸    285ｍｍ× 245ｍｍ× 120 mm
9 instrument size 285mm * 245mm * 120 mm
10    質(zhì)量    約2.5KG
10 the quality is about 2.5KG
四、工作原理
Four, working principle
根據(jù)歐姆定律，被測電阻Rx等于施加電壓V除以通過的電流I。傳統(tǒng)的高阻計的工作原理是測量電壓V固定，通過測量流過取樣電阻的電流I來得到電阻值。從歐姆定律可以看出，由于電流I是與電阻成反比，而不是成正比，所以電阻的顯示值是非線性的，即電阻無窮大時，電流為零，即表頭的零位處是∞，其附近的刻度非常密，分辨率很低。整個刻度是非線性的。又由于測量不同的電阻時，其電壓V也會有些變化，所以普通的高阻計是精度差、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 high resistance meter works is the measurement of the voltage V fixed, by measuring the flow through the sampling resistance of the current 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 since the measurement of different resistance, the voltage V will be some changes, so the average high resistance meter is poor accuracy, low resolution.
本儀器是同時測出電阻兩端的電壓V和流過電阻的電流I，通過內(nèi)部的大規(guī)模集成電路完成電壓除以電流的計算，然后把所得到的結(jié)果經(jīng)過A/D轉(zhuǎn)換后以數(shù)字顯示出電阻值，即便是電阻兩端的電壓V和流過電阻的電流I是同時變化，其顯示的電阻值不象普通高阻計那樣因被測電壓V的變化或電流Ｉ的變化而變，所以，即使測量電壓、被測量電阻、電源電壓等發(fā)生變化對其結(jié)果影響不大，其測量精度很高()，從理論上講其誤差可以做到零，而實際誤差可以做到千分之幾或萬分之幾。
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.
典型應(yīng)用
Typical applications
1．測量防靜電鞋、導(dǎo)電鞋的電阻值
1 measure the resistance value of the anti-static shoes and conductive shoes.
2、測量防靜電材料的電阻及電阻率
2. Measure the resistance and resistivity of the antistatic material.
3、測量計算機(jī)房用活動地板的系統(tǒng)電阻值
3. Measure the system resistance value of the computer room floor.
4、測量絕緣材料電阻(率)
4, measuring the resistance of insulating materials (rate)
5、光電二極管暗電流測量
5, photoelectric diode dark current measurement
6、物理,光學(xué)和材料研究
6, physics, optics and materials research
標(biāo)準(zhǔn)配置：
Standard configuration:
序號    配置    數(shù)量    單位
Number unit
1    測試儀器    臺    1
1 test instrument table 1
2    電源線    條    1
2 power cord 1
3    測量線    根    3
3 measuring line root 3
4    使用說明書    份    1
4 using the instruction manual 1