供應(yīng)廠家直銷表面電阻測試儀優(yōu)質(zhì)產(chǎn)品，武漢電阻測定儀，廣州電阻測定儀

Volume Surface insulation resistance meter

GEST-121

Skill

Technique

Square

e

Book

Test test Instrument Co., Ltd. Beijing crown

 Host Pictures

Three electrode Image :          Powder electrode Images:

Liquid electrode Pictures

Volume of surface resistance tester (GEST-121)

Standard:

GB/T 1410-2006 《 Volume resistivity of insulating materials and surface resistivity test methods》

ASTM D257-99  《 DC resistance of the insulating material or conductance test method》

GB/T 10581-2006 《 Insulating materials at high temperatures resistance and resistivity test methods》

GB/T 1692-2008 《 Vulcanized rubber insulation resistance measurement》

GB/T 2439-2001  《Rubber, vulcanized or thermoplastic rubber conductive and dissipative resistivity measurement》

GB/T 12703.4-2010 《Textiles electrostatic properties - Part 4 : Resistivity》

GB/T 10064-2006_ 《Textiles electrostatic properties - Part 4 : Resistivity》

ONE. Overview

The instrument can measure high resistance , but also to measure micro-current . Uses the U.S. Intel Corporation LSI , so equipment is small , light weight , high accuracy . Digital LCD display directly the resistance value and current. Limit the amount of from 1 × 104Ω ~ 1 × 1018 Ω, is currently the most wide measuring range , high accuracy digital high resistance measuring instrument . Current measurement range of 2 × 10-4 ~ 1 × 10-16A. Machine test voltage 10V/50V/100V/250V/500V/1000V adjustable. This instrument has high precision , showing rapid , good stability , easy reg for rubber, plastics, films , and powders , liquids, and solids and paste shapes of various insulating materials volume and surface resistivity value determination . In addition to the instrument can measure resistance , but also directly measure weak current .

Second, the main features of

Resistance measurement range 1 × 104Ω ~ 1 × 1018Ω

Current measurement range of 2 × 10-4A ~ 1 × 10-16A

Small size , light weight , high accuracy

Resistance, current dual display

Stable performance , easy reg

All test voltage (10V/50V/100/250/500/1000V) resistance test results direct reg , replacing old-fashioned high impedance meter at different test voltages or different range when multiplied by the coefficient of trouble such as inconvenient to use , the measurement high resistance to general resistance as measured with a multimeter like simple.

High resistance measurements can measure both micro-current

Third, technical indicators

1 , the resistance measurement range : 1.0 × 104Ω ~ 1 × 1018Ω.

2, the current measurement range : 2 × 10-4A ~ 1 × 10-16A

3 , the display mode : Digital LCD

4 , built-in test voltage : 10V, 50V, 100V, 250,500,1000 V

5 , the basic accuracy : 1% ( * Note )

6, the use of the environment : Temperature : 0 ℃ ~ 40 ℃, relative humidity \u003c80%

7 , the machine test voltage : 10V/50V/100/250/500/1000V arbitrary switching

8 , the power supply in the form : AC 220V, 50HZ, power consumption is about 5W

9 , Instrument Size : 285mm × 245mm × 120 mm

10 , Weight: about 2.5KG

Fourth, the working principle

According to Ohm s law, the measured resistance Rx is equal to the applied voltage V divided by the current through the I. The traditional high impedance meter works by measuring the voltage V fixed by measuring the current flowing through the sampling resistor I to get the resistance value. As can be seen from Ohms law , since the current I is inversely proportional to the resistance , rather than proportional to the resistor value displayed is nonlinear, i.e. infinite resistance , the current is zero, that the header is at zero ∞, its the scale is very close to dense, low resolution . Entire scale is nonlinear. Also, because the resistance of different measurement , the voltage V will be some variation , so the ordinary differential impedance meter is the precision , low resolution .

The instrument is also measure the voltage V across the resistor and a current flowing through the resistor I, large scale integrated circuit via the internal voltage divided by current calculation completion , then the results obtained after A / D conversion to digital display resistor value , even the voltage V across the resistor and the current I flowing through the resistor is changed simultaneously , which shows the resistance value is not as common as a result of taking into account the measured impedance changes or voltage V and the variation of the current I , therefore, even if the measuring voltage , resistance is measured , and power supply voltage changes little effect on its results , the measurement accuracy is high ( patent ) , in theory the error can be zero , the actual errors can be done a few thousandths or very few .

Typical applications

1, measuring insulation resistance, volume resistivity , surface resistance ( rate )

2, measuring the resistance and anti-static material resistivity

3, the measurement computer room raised floor system with resistance values

4, measuring anti-static shoes , conductive shoes resistance values

5 , the photodiode dark current measurement

6 , physics, optics and materials research

Standard configuration:

1 , test equipment : 1 set

2 , Power cord : 1

3 , measuring line : 3 ( shielded wire, test wiring, grounding wire )

4, using the Manual: 1

Remarks :

The instrument is equipped with different measuring electrode ( fixtures ) can measure different materials ( solid , powder or liquid ) volume resistivity and surface resistivity or conductivity , in full compliance with the national standard GB1410-2006 solid electrical insulation materials insulation resistance, volume resistance and surface resistivity test method , ASTM D257 DC insulation resistance or conductance standard test methods .

絕緣材料體積表面電阻測定儀

GEST-121

技

術(shù)

方

案

書

北京冠測試驗儀器有限公司

主機圖片：

三電極圖片：                粉體電極圖片：

液體電極圖片

體積表面電阻測定儀（GEST-121）

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方法》

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

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

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方法》

一、概述

    本儀器既可測量高電阻，又可測微電流。采用了美國Intel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)測量范圍最寬，準(zhǔn)確度的數(shù)字超高阻測量儀。電流測量范圍為2×10^-4 ～1×10^-16Ａ。機內(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、主要特點

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、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、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，而實際誤差可以做到千分之幾或萬分之幾。

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

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

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，完全符合國家標(biāo)準(zhǔn)GB1410－2006固體電工絕緣材料絕緣電阻、體積電阻系數(shù)和表面電阻試驗方法，ASTM D257 絕緣材料的直流電阻或電導(dǎo)試驗方法　等標(biāo)準(zhǔn)要求。