（BEST-121）粉體材料體積表面電阻率測定儀

一、概述
I. overview
粉體材料體積表面電阻率測定儀既可測量高電阻，又可測微電流。采用了美國In公司的大規模集成電路,使儀器體積小、重量輕準確度高。數字液晶直接顯示電阻值和電流。量限從1×104Ω ～1×1018 Ω，是目前國內測量范圍zui寬，準確度zui高的數字超高阻測量儀。電流測量范圍為2×10-4 ～1×10-16Ａ。機內測試電壓10V/50V/100V/250V/500V/1000V任意可調。適用于橡膠、塑料、薄膜、地毯、織物及粉體、液體、及固體和膏體形狀的各種絕緣材料體積和表面電阻值的測定。
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、主要特點
Two, the main features
電阻測量范圍寬 1×104Ω ～1×1018Ω
Resistance measurement range 1 x 104 x ~ 1 x 1018 ohm
電流測量范圍為 2×10-4Ａ ～1×10-16Ａ
The current measurement range is 2 * 10-4A ~ 1 * 10-16A
體積小、重量輕、準確度高
Small size, light weight, high accuracy
電阻、電流雙顯示
Resistance, current double display
性能好穩定、讀數方便
Stable performance, easy reading
所有測試電壓(10V/50V/100/250/500/1000V) 測試時電阻結果直讀，免去老式高阻計在不同測試電壓下或不同量程時要乘以系數等使用不便的麻煩，使測量超高電阻就如用萬用表測量普通電阻樣簡便。既能測超高電阻又能測微電流
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、技術指標
Three, technical indicators
1、電阻測量范圍： 0.01×104Ω ～1×1018Ω。
1, resistance measurement range: 0.01 x 104 x ~ 1 * 1018.
2、電流測量范圍為： 2×10-4A～1×10-16A
2, current measurement range: 2 x 10-4A ~ 1 * 10-16A
3、顯 示 方 式：數字液晶顯示
3, display mode: Digital LCD display
4、內置測試電壓： 10V 、50V、100V、250、500、1000V
4, built-in test voltage: 10V, 50V, 100V, 250, 500, 1000V
5、基本準確度：1% (*注)
5, basic accuracy: 1% (*)
6、使用環境： 溫度：0℃～40℃，相對濕度<80%
6, the use of the environment: temperature: 0 DEG C to 40 C, relative humidity <80%
7、機內測試電壓： 10V/50V/100/250/500/1000V 任意切換
7, the test voltage: 10V/50V/100/250/500/1000V arbitrary switching
8、供電形式： AC 220V，50HZ，功耗約5W
8, power supply form: AC 220V, 50HZ, power consumption is about 5W
9、儀器尺寸： 285ｍｍ× 245ｍｍ× 120 mm
9, instrument size: 285mm * 245mm * 120 mm
10、質量： 約5KG
10, quality: about 5KG
四、工作原理
Four, working principle
根據歐姆定律，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 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.
 是同時測出電阻兩端的電壓V和流過電阻的電流I，通過內部的大規模集成電路完成電壓除以電流的計算，然后把所得到的結果經過A/D轉換后以數字顯示出電阻值，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的變而變，所以，即使測量電壓、被測量電阻、電源電壓等發生變化對其結果影響不大，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 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.
典型應用
Typical application
1、測量絕緣材料電阻(率)
1, measuring insulation resistance (rate)
2、測量防靜電材料的電阻及電阻率
2. Measure the resistance and resistivity of antistatic material
3、測量計算機房用活動地板的系統電阻值
3. Measure the system resistance value of the movable floor of the computer room
4、測量防靜電鞋、導電鞋的電阻值
4. Measure the resistance value of anti-static shoes and conductive shoes
5、光電二極管暗電流測量
5, photodiode dark current measurement
6、物理,光學和材料研究
6, physics, optics and materials research
標準配置：
Standard configuration:
1、測試儀器：1臺
1, test equipment: 1
2、電源線：1條
2, power line: 1
3、測量線：3根（屏蔽線、測試接線、接地線）
3, measuring line: 3 (shielded wire, test wiring, grounding wire)
4、使用說明書：1份
4, manual: 1 copies
備注：
Remarks：
 配不同的測量電極（夾具）可以測量不同材料（固體、粉體或液體）的體積電阻率和表面電阻率或電導率，*符合國家標準GB1410－2006固體電工絕緣材料絕緣電阻、體積電阻系數和表面電阻試驗方法，ASTM D257 絕緣材料的直流電阻或電導試驗方法 等標準要求。
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.