別名為:粉體電阻率,膏體電阻率,液體電阻率,絕緣材料電阻率測定儀,高電阻微電流測量儀 

體積表面電阻測定儀（GEST-121） 

體積表面電阻測定儀符合標(biāo)準(zhǔn)： 

         GB/T 1410-2006《 固體絕緣材料體積電阻率和表面電阻率試驗(yàn)方法》 

         ASTM D257-99《絕緣材料的直流電阻或電導(dǎo)試驗(yàn)方法》 

         GB/T 10581-2006 《絕緣材料在高溫下電阻和電阻率的試驗(yàn)方法》 

GB/T 1692-2008 《硫化橡膠 絕緣電阻率的測定》 

GB/T 2439-2001《硫化橡膠或熱塑性橡膠 導(dǎo)電性能和耗散性能電阻率的測定》 

GB/T 12703.4-2010 《紡織品  靜電性能的評定  第４部分：電阻率》 

GB/T 10064-2006_《測定固體絕緣材料絕緣電阻的試驗(yàn)方法》 

一、體積表面電阻測定儀概述 

    本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。數(shù)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(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10V/50V/100V/250V/500V/1000V任意可調(diào)。本儀器具有精度高、顯示迅速、性好穩(wěn)定、讀數(shù)方便， 適用于橡膠、塑料、薄膜、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。本儀器除能測電阻外，還能直接測量微弱電流。 

二、體積表面電阻測定儀主要特點(diǎn) 

電阻測量范圍寬  1×104Ω ～1×1018Ω 

電流測量范圍為 2×10-4Ａ ～1×10-16Ａ 

體積小、重量輕、準(zhǔn)確度高 

電阻、電流雙顯示 

性能好穩(wěn)定、讀數(shù)方便 

所有測試電壓(10V/50V/100/250/500/1000V) 測試時電阻結(jié)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(shù)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 

三、體積表面電阻測定儀技術(shù)指標(biāo)               

1、電阻測量范圍： 1.0×104Ω ～1×1018Ω。 

2、電流測量范圍為： 2×10-4A～1×10-16A 

3、顯 示 方 式：數(shù)字液晶顯示 

4、內(nèi)置測試電壓： 10V 、50V、100V、250、500、1000V 

5、基本準(zhǔn)確度：1% (*注) 

6、使用環(huán)境： 溫度：0℃～40℃，相對濕度<80% 

7、機(jī)內(nèi)測試電壓： 10V/50V/100/250/500/1000V 任意切換 

8、供電形式： AC 220V，50HZ，功耗約5W 

9、儀器尺寸： 285ｍｍ× 245ｍｍ× 120 mm 

10、質(zhì)量： 約2.5KG 

四、體積表面電阻測定儀工作原理 

   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。 

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(shí)際誤差可以做到千分之幾或萬分之幾。 

體積電阻率表面電阻率測定儀典型應(yīng)用 

1、測量絕緣材料電阻、體積電阻、表面電阻(率) 

2、測量防靜電材料的電阻及電阻率 

3、測量計算機(jī)房用活動地板的系統(tǒng)電阻值 

4、測量防靜電鞋、導(dǎo)電鞋的電阻值 

5、光電二極管暗電流測量 

6、物理,光學(xué)和材料研究 

體積表面電阻測定儀標(biāo)準(zhǔn)配置：                      

1、測試儀器：1臺 

2、.電源線：1條 

3、測量線：3根（屏蔽線、測試接線、接地線） 

4、使用說明書：1份 

體積表面電阻測定儀備注： 

本儀器配不同的測量電極（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(dǎo)率，*符合國家標(biāo)準(zhǔn)GB1410－2006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(yàn)方法，ASTM D257 絕緣材料的直流電阻或電導(dǎo)試驗(yàn)方法 等標(biāo)準(zhǔn)要求。 

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Alias: powder paste electrical resistivity, resistivity, liquid resistivity tester, insulation resistivity of the materials, micro current measurement instrument with high resistance
Volume surface resistance tester (GEST-121)
Volume surface resistance tester standard:
GB/T 1410-2006 "solid insulating material volume resistivity and surface resistivity test method"
DC resistance or conductance of insulating materials test method "ASTM D257-99"
Test method GB/T 10581-2006 "insulation resistance at high temperature and resistivity"
Determination of 1692-2008 vulcanized rubber insulation resistivity of "GB/T"
GB/T 2439-2001 "rubber vulcanized or thermoplastic conductive properties and dissipative properties determination of resistivity"
GB/T 12703.4-2010 "textile xerographic performance evaluation of fourth parts: the resistivity"
GB/T 10064-2006_ "determination of solid insulation resistance of insulation materials test method"
A volume, surface resistance tester overview
This instrument can measure high resistance, but also can measure current. Use of large scale integrated circuit American In company, make the instrument has the advantages of small volume, light weight, high accuracy. Digital LCD display resistance value and the current. Range from 1 × 104 Ω to 1 × 1018 Ω, is currently the most wide measuring range, accuracy the highest high resistance measuring instrument. Current measuring range is 2 × 10-4 ～ 1 × 10-16A. The built-in test voltage of 10V/50V/100V/250V/500V/1000V adjustable. The instrument has high precision, good stability, shows a rapid, convenient reading, and is suitable for various rubber, plastic, film, and powder, liquid, and solid and pasty shape insulating materials by volume and surface resistance value. This instrument can measure resistance, and can directly measure weak current.
The two volume, surface resistance tester main features
Resistance measurement range of 1 × 104 to 1 × 1018 Ω
Current measuring range is 2 × 10-4A ～ 1 × 10-16A
Small volume, light weight, high accuracy
Resistance, current double display
Good performance is stable, easy reading
All voltage test (10V/50V/100/250/500/1000V) resistance results test reading, from old high resistance meter in different test voltage or different range should be multiplied by the coefficient of inconvenience and trouble, ultra high resistance as measured with a multimeter common resistance is measured.
Not only can measure high resistance and micro current
The three volume, surface resistance tester technical indicators
1, resistance measurement range: 1 × 104 ~ 1 × 1018 Ω.
2, the current measurement range: 2 × 10-4A ～ 1 × 10-16A
3, the display mode: Digital LCD display
4, the built-in test voltage: 10V, 50V, 100V, 250, 500, 1000V
5, basic accuracy: 1% (note)
6, the use of the environment: temperature: 0 ℃ ~ 40 ℃, relative humidity <80%
7, the built-in test voltage: 10V/50V/100/250/500/1000V arbitrary switching
8, the power supply form: AC 220V, 50HZ, power consumption is about 5W
9, the instrument size: 285mm x 245mm x 120 mm
10, quality: about 2.5KG
The four volume, surface resistance tester principle
According to Ohm's law, the measured resistance Rx is equal to the applied voltage divided by current V by I. The working principle of high resistance meter is the traditional measure voltage V fixed, by measuring the current flows through the sampling resistor I to get the resistance value. From Ohm's law can be seen, the current I is inversely proportional to the resistance, not proportional, so is nonlinear resistive display value, namely the infinite resistance, current is zero, i.e. zero at the header is ∞, graduated in the vicinity of the very tight, very low resolution. The scale is nonlinear. Because the resistance measurement is different, its voltage V there will be some changes, so the high resistance of ordinary meter is poor accuracy, low resolution.
This instrument is current and voltage V and flow resistance at the same time measuring resistor I, the large scale integrated circuit internal to complete the calculation of voltage divided by current, and then the obtained results after A/D conversion to digital display resistance value, even if is current and voltage of V and flow resistance at both ends of the I is changed at the same time, the displayed value resistance do not like ordinary high resistance meter that due to changes in the measured voltage or current change of V I and change, so, even if the measurement of voltage, resistance, power supply voltage is measured and the change had little effect on the results, the measuring accuracy is very high (patent), theoretically the error can do zero, while the actual error can be done a few thousandths or very few.
Determination of volume resistivity instrument typical application of surface resistivity
1, measure the insulation resistance, volume resistance, surface resistance (rate)
2, the measurement of anti resistance and resistivity electrostatic materials
3, the measurement used in computer room floor system resistance value
Resistance of 4, measurement of anti-static shoes, conductive shoes value
5, photoelectric diode dark current measurement
6, physical, optical and material research
Volume surface resistance tester standard:
1, test equipment: 1 sets
2, power line: 1
3, the measuring line: 3 (shielding line, test line, ground wire)
4, use instructions: 1
Volume surface resistance tester notes:
This instrument measuring electrode with different (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 resistance, volume resistivity and surface resistance test method of material, ASTM D257 DC resistance or conductance of insulating materials test method standard.
For details about the determination of volume resistivity surface resistivity more please contact us