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北京北廣精儀儀器設(shè)備有限公司研發(fā)部
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北京北廣精儀儀器設(shè)備有限公司研發(fā)部
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產(chǎn)品型號(hào)BEST-121
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所 在 地北京市
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更新時(shí)間：2023-06-12 09:17:28瀏覽次數(shù)：995次
聯(lián)系我時(shí)，請(qǐng)告知來(lái)自 環(huán)保在線體積表面電阻率測(cè)試儀*符合國(guó)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。
BEST-121體積表面電阻率測(cè)試儀
一、 概述：
BEST- 121型高絕緣體積表面電阻測(cè)量?jī)x用于測(cè)量絕緣材料、電工產(chǎn)品、各種元器件的絕緣電阻；與恒溫水浴配套后，還能測(cè)量不同溫度下的塑料電線電纜（無(wú)屏蔽層）的絕緣電阻，該儀器具有測(cè)量精度高、性能穩(wěn)定、操作簡(jiǎn)單、輸入端高壓短路等優(yōu)點(diǎn)，儀器的zui高量程 1018Ω電阻值（測(cè)試電壓為 1000V）
本儀表貫徹 GB1410－2006 高絕緣體積電阻測(cè)量?jī)x企業(yè)標(biāo)準(zhǔn)。
測(cè)試電壓（V）
DC—10V
DC—50V
DC—100V
DC—500V
DC—1000V
體積表面電阻率測(cè)試儀配不同的測(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、主要特點(diǎn)：
電阻測(cè)量范圍寬 1×104Ω ～1×1018Ω
電流測(cè)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(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(wàn)用表測(cè)量普通電阻樣簡(jiǎn)便。既能測(cè)超高電阻又能測(cè)微電流
三,技術(shù)指標(biāo)：
1,電阻測(cè)量范圍： 0.01×104Ω ～1×1018Ω。
2,電流測(cè)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(cè)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(duì)濕度<80%
7,機(jī)內(nèi)測(cè)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5KG
四,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(guò)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(guò)測(cè)量流過(guò)取樣電阻的電流I來(lái)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(wú)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。
本儀器是同時(shí)測(cè)出電阻兩端的電壓V和流過(guò)電阻的電流I,通過(guò)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(guò)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(guò)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(wàn)分之幾。
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
標(biāo)準(zhǔn)配置：
1,測(cè)試儀器：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(shuō)明書(shū)：1份
體積表面電阻率測(cè)試儀
Volume surface resistivity measuring instrument with different measuring electrodes (fixture) can measure the volume resistivity and surface resistivity or conductivity of different materials (solid, powder or liquid). Suitable for the measurement of the volume and surface resistance of rubber, plastics, film, powder, liquid, and solid and paste shapes. In addition to the measurement of resistance of the instrument, but also can directly measure the weak current.
Two, the main features:
Resistance measurement range x 104 x 1 x 1018 x 1
The current measurement range is 2 * 10-4A ~ 1 * 10-16A
Small in size, light in weight and high in accuracy.
Resistance, current dual display
Good performance and stable, easy to read
All the test voltage (10V/50V/100/250/500/1000V) to test the resistance results in reading, replacing the old high resistance meter in different test voltage or different scale to multiplied by the coefficient of use inconvenience trouble, enable the measurement of ultra high resistance as the multimeter is used to measure the general resistance of samples is simple. Not only can measure high resistance and micro current
Three, technical indicators:
1, resistance measurement range: 0.01 * 104 ~ 1 * 1018.
2, the current measurement range is: 2 * 10-4A ~ 1 * 10-16A
3, explicit formula: digital liquid crystal display
4, built-in test voltage: 10V, 50V, 100V, 2505001000V
5, basic accuracy: 1% (* Note)
6, the use of the environment: temperature: 0 degrees Celsius to 40 degrees Celsius, the relative humidity of <80%
7, the machine test voltage: 10V/50V/100/250/500/1000V arbitrary switching
8, the form of power supply: 220V AC, 50HZ, power consumption is about 5W
9, instrument size: 285mm * 245mm * 120 mm
10, quality: about 5KG
Four, working principle
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. Can be seen from Ohm's law, due to the current I is inversely proportional to the resistance, and not directly proportional to, so the resistance to the display value is nonlinear, the resistance is infinite, the current is zero, namely header zero is infinity, near the scale is very close, the resolution is too low. 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.
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, by measuring the resistance, the power supply voltage changes have little effect 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.
Typical applications
1, measuring the resistance of insulating materials (rate)
2, measuring the resistance and resistivity of antistatic materials
3, measuring the system resistance value of the computer room floor
4, measure the anti-static shoes, the resistance value of conductive shoes
5. Dark current measurement of photodiode
6, physics, optics and materials research
Standard configuration:
1, test equipment: 1 sets
2, power cord: 1
3, measuring line: 3 (shielding wire, test wiring, grounding wire)
4, the instruction manual: 1 copies
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