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[供應(yīng)]橡膠表面電阻率測(cè)試儀
產(chǎn)地：北京市房山區(qū)經(jīng)濟(jì)技術(shù)開發(fā)區(qū)顧八路1號(hào)
更新時(shí)間：2025-03-18 08:56:46
有效期：2025年3月18日 -- 2025年9月15日
已獲點(diǎn)擊：317
ZST-121橡膠表面電阻率測(cè)試儀
一、符合標(biāo)準(zhǔn)及適用范圍：
*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。本儀器配不同的測(cè)量電極（夾具）可以測(cè)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。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(cè)定。本儀器除能測(cè)電阻外，還能直接測(cè)量微弱電流。
二、技術(shù)指標(biāo)
1、電阻測(cè)量范圍： 1×104Ω ～1×1018Ω。
2、電流測(cè)量范圍： 2×10-4A～1×10-16A
3、顯 示 方 式：數(shù)字液晶顯示
4、內(nèi)置測(cè)試電壓： 10V 、50V、100V、250V、500V、1000V（任意切換）
5、基本準(zhǔn)確度：1% (*注)
6、使用環(huán)境： 溫度：0℃～40℃，相對(duì)濕度<80%
7、供電形式： AC 220V，50HZ，功耗約5W
8、儀器尺寸： 285ｍｍ× 245ｍｍ× 120 mm
9、質(zhì)量： 約5KG
10、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
11、所有測(cè)試電壓(10V/50V/100/250/500/1000V) 測(cè)試時(shí)電阻結(jié)果直讀，免去老式高阻計(jì)在不同測(cè)試電壓下或不同量程時(shí)要乘以系數(shù)等使用不便的麻煩，使測(cè)量超高電阻就如用萬用表測(cè)量普通電阻樣簡便。
三、工作原理
根據(jù)歐姆定律，被測(cè)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(jì)的工作原理是測(cè)量電壓V固定，通過測(cè)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(shí)，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(gè)刻度是非線性的。又由于測(cè)量不同的電阻時(shí)，其電壓V也會(huì)有些變化，所以普通的高阻計(jì)是精度差、分辨率低。
本臺(tái)電阻率測(cè)試儀是同時(shí)測(cè)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(jì)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(shí)變化，其顯示的電阻值不象普通高阻計(jì)那樣因被測(cè)電壓V的變化或電流Ｉ的變化而變，所以，即使測(cè)量電壓、被測(cè)量電阻、電源電壓等發(fā)生變化對(duì)其結(jié)果影響不大，其測(cè)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。
四、典型應(yīng)用
1、測(cè)量絕緣材料電阻(率)
2、測(cè)量防靜電材料的電阻及電阻率
3、測(cè)量計(jì)算機(jī)房用活動(dòng)地板的系統(tǒng)電阻值
4、測(cè)量防靜電鞋、導(dǎo)電鞋的電阻值
5、光電二極管暗電流測(cè)量
6、物理,光學(xué)和材料研究
五、標(biāo)準(zhǔn)配置：
1、測(cè)試儀器：1臺(tái)
2、電極箱：1臺(tái)
2、電源線：1條
3、測(cè)量線：3根（屏蔽線、測(cè)試接線、接地線）
4、使用說明書：1份
5、合格證：一份
A, standard and scope of application:
In full compliance with national standards GB14102006 solid electrical insulation insulation resistance, volume resistivity and surface resistance test method of material, ASTM D257, DC resistance or conductance of insulating materials test method standards. The apparatus withdifferent measuring electrode (fixture) can measure different materials (solid, powder or liquid)of the volume resistivity and surface resistivity or conductivity. Various applicable to rubber,plastic, film, powder, liquid, and solid and pasty insulating material shape determination ofvolume and surface resistance value. In addition to the instruments can measure resistance, but also the direct measurement of weak current.
Two, technical indicators
1, resistance measuring range: 1 * 104 to 1 * 1018 Omega omega.
2, the current measuring range: 2 * 10-4A to 1 * 10-16A
3, the display mode: Digital LCD display
4, the built-in test voltage: 10V, 50V, 100V, 250V, 500V, 1000V (arbitrary switching)
5, basic accuracy: 1% (note)
6, the use of the environment: temperature: 0 to 40 DEG C, relative humidity <80%
7 power supply forms: AC, 220V, 50HZ, power consumption is about 5W
8, the instrument size: 285mm x 245mm x 120 mm
9, quality: about 5KG
10, small volume, light weight, high accuracy, resistance, current double display, performance good stability, convenient reading
11, all the test voltage (10V/50V/100/250/500/1000V) resistance results when testing direct reading, removed from the old high resistance meter in different test voltage or different rangeshould be multiplied by the coefficient etc. use inconvenience trouble, ultra high resistance asmeasured with a multimeter common resistance like simple measurements enable.
Three, the principle of work
According to Ohm's law, the resistance being measured Rx is equal to the applied voltagedivided by current V by I. The working principle of the high resistance meter is the traditionalmeasuring voltage V fixed, by measuring the current flowing through the sampling resistor I toobtain 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 resistive display value, i.e.,infinite resistance, current is zero, i.e. zero at the header is infinity, scale near the very dense,with a low resolution. The scale is nonlinear. Because the resistance measurement of differentvoltage, the V will also be some changes, so the high resistance of ordinary gauge is poor accuracy and low resolution.
The station is the current resistivity tester voltage V and flow resistance measured at the same time across the resistor I, the large scale integrated circuit internal to complete the calculation ofvoltage divided by current, then put the results obtained after A/D conversion to digital displayresistance, even current voltage V and the flow resistance at both ends of the I is at the same time change, resistance its display value does not like ordinary high resistance meter that due to changes in the voltage to be measured changes in V or I current and change, so, even if themeasure voltage, measure resistance, power supply voltage change has little influence on theresults, the measuring accuracy is very high (patent), theoretically the error can be zero, but the actual error can do a few thousandths or very few.
Four, the typical application
Insulation resistance 1, measurement (rate)
2, measurement of anti electrostatic material resistance and resistivity
3, measurement of computer room with movable floor system resistance value
Resistance of 4, measurement of anti-static shoes, conductive shoes value
5, photoelectric diode dark current measurement
6, physics, optics and material research
Five, the standard configuration:
1, test equipment: 1 sets
2, the electrode box: 1
2, the power line: 1
3, measuring line: 3 (shielding wire, test wiring, grounding wire)
4, instructions for use: 1
5, certificate: a
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