DD北京北廣精儀儀器設(shè)備有限公司 鄭重聲明：*

體積電阻率表面電阻率測試儀  型號：BEST-121

本儀器是既可測量高電阻，又可測微電流。采用了美國In公司的大規(guī)模集成電路以及技術(shù),使儀器體積小、重量輕、準確度高。以雙3.1/2 位數(shù)字直接顯示電阻的高阻計和電流。量限從1×104Ω ～1×1018 Ω，是目前國內(nèi)測量范圍zui寬，準確度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。機內(nèi)測試電壓為10/50/100/250/500/1000V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， 適用于防靜電產(chǎn)品如防靜電鞋、防靜電塑料橡膠制品、計算機房防靜電活動地板等電阻值的檢驗以及絕緣材料和電子電器產(chǎn)品的絕緣電阻測量。本儀器除能測電阻外，還能直接測量微弱電流。

Volume resistivity of surface resistivity tester

Digital high resistance, a current measuring instrument type: EST-121: volume resistivity, surface resistivity uses: Instrumentation Test

One, volume resistivity surface resistivity tester overview

This instrument can measure high resistance, and measuring current. The American company In large scale integrated circuit and patented technology, the instrument has the advantages of small volume, light weight, high accuracy. Dual 3.1/2 digital display the resistance high resistance meter and current. Limit from 1× 104 Ω～ 1× 1018 Ω, is currently the most wide measurement range, the most accurate digital ultra high resistance meter. Current measurement range of 2× 10-4 ～ 1× 10-16A. The built-in test voltage is 10/50/100/250/500/1000V adjustable. The instrument has the advantages of high precision, good stability, showing a rapid, easy reading, applied to anti-static products such as anti-static shoes, anti-static plastic rubber products, computer room anti-static floor activities such as the resistance value of the test as well as insulating materials electrical and electronic products insulation resistance measurement. The instrument can measure the resistance, and can directly measure the weak current. 

Instrument is fully consistent with and better than the national standard GB1410 " solid electrical insulating materials, insulation resistance, volume resistivity and surface resistance test method " and " American Standard ASTM D257 DC resistance or conductance of insulating materials test methods " and other standards.

適用的主要標準：

 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

 GB 12014 防靜電工作服

 GB/T 20991-2007 個體防護裝備 鞋的測試方法

 GB 4385-1995 防靜電鞋、導電鞋技術(shù)要求 

 GB 12158-2006 防止靜電事故通用導則

 GB 4655-2003 橡膠工業(yè)靜電安全規(guī)程

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

 GB/T 12703.6-2010 紡織品 靜電性能的評定 第6部分 纖維泄漏電阻

 GB 13348-2009 液體石油產(chǎn)品靜電安全規(guī)程

 GB/T 15738-2008 導電和抗靜電纖維增強塑料電阻率試驗方法

 GB/T 18044-2008 地毯 靜電習性評價法 行走試驗

 GB/T 18864-2002 硫化橡膠 工業(yè)用抗靜電和導電產(chǎn)品 電阻極限范圍

 GB/T 22042-2008 服裝 防靜電性能 表面電阻率試驗方法

 GB/T 22043-2008 服裝 防靜電性能 通過材料的電阻（垂直電阻）試驗方法

 GB/T 24249-2009 防靜電潔凈織物

 GB 26539-2011 防靜電陶瓷磚 Antistatic ceramic tiles

 GB/T 26825-2011 抗靜電防腐膠

 GB 50515-2010 導（防）靜電地面設(shè)計規(guī)范

 GB 50611-2010 電子工程防靜電設(shè)計規(guī)范

 GJB 105-1998-Z 電子產(chǎn)品防靜電放電控制手冊

 GJB 3007A-2009 防靜電工作區(qū)技術(shù)要求

 GJB 5104-2004 無線電引信風帽用防靜電涂料及風帽靜電性能通用要求

 Two, volume resistivity surface resistivity tester main features

Resistance measuring range 0.01× 104 Ω～ 1× 1018 Ω

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

Small volume, light weight, high accuracy

Resistance, current double display

Good performance is stable, easy reading

All the test voltage （ 10/50/100/250/500/1000V ） test resistance results in reading, is removed from the old high resistance meter in different test voltage or different scale should be multiplied by the coefficient of the inconvenient trouble, allowing the measurement of 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

Wide application: applied to anti-static products such as anti-static shoes, anti-static plastic rubber products, computer room anti-static floor activities such as resistance testing electrical and electronic products insulation resistance measurement

四、測試 

將被測試樣用測量電纜線和導線分別與訊號輸入端和測試電壓輸出端連接。 將測試電壓選擇開關(guān)置于所需要的測試電壓檔。 將“放電-測試”開關(guān)置于“測試”檔，輸入短路開關(guān)仍置于“短路”。對試樣經(jīng)一定時間的充電以后（視試樣的容量大小而定，一般為15秒。電容量大時，可適當延長充電時間），即可將輸入短路開關(guān)撳至“測量”進行讀數(shù)，若發(fā)現(xiàn)指針很快打出滿刻度，應立即撳輸入短路開關(guān)，使其置于“短路”， 將“放電-測試”開關(guān)置于“放電”檔，等查明原因并排除故障后再進行測試。 當輸入短路開關(guān)置于測量后，如發(fā)現(xiàn)表頭無讀數(shù)，或指示很少，可將倍率開關(guān)逐步升高，數(shù)字顯示依次為7、8、9、…直至讀數(shù)清晰為止（盡量取儀表上1～10的那段刻度）。通過旋轉(zhuǎn)倍率旋鈕，使示數(shù)處于半偏以內(nèi)的位置，便于讀數(shù)。測量時先將RV/RS轉(zhuǎn)換開關(guān)置于RV測量體積電阻，然后置于RS測量表面電阻。讀數(shù)方法如下：表頭指示為讀數(shù)，數(shù)字顯示為10的指數(shù)，單位W。用不同電壓進行測量時，其電阻系數(shù)不一樣，電阻系數(shù)標在電壓值下方。將儀表上的讀數(shù)（單位為兆歐）乘以倍率開關(guān)所指示的倍率及測試電壓開關(guān)所指的系數(shù)（10V為0.01；100V為0.1；250V為0.25；500V為0.5；1000V為1）即為被測試樣的絕緣電阻值。例如：讀數(shù)為3.5′106W倍率開關(guān)所指系數(shù)為108，測量電壓為100V，則被測電阻值為：3.5′106′108′0.1 =3.5′1013W。 在測試絕緣電阻時，如發(fā)現(xiàn)指針有不斷上升的現(xiàn)象，這是由于電介質(zhì)的吸收現(xiàn)象所致，若在很長時間內(nèi)未能穩(wěn)定，則一般情況下取接通測試開關(guān)后一分鐘時的讀數(shù)作為試樣的絕緣電阻值。

一個試樣測試完畢，即將輸入短路撳鍵置于“短路”，測試電壓控制開關(guān)置于“關(guān)”后，將方式選擇開關(guān)撥向放電位置，幾分鐘后方可取出試樣。對電容量較大的試樣者需經(jīng)1分鐘左右的放電，方能取出試樣，以免受測試系統(tǒng)電容中殘余電荷的電擊。。若要重復測試時，應將試樣上的殘留電荷全部放掉方能進行。

然后進入下一個試樣的測試：為了操作簡便無誤，測量絕緣材料體積電阻（Rv）和表面電阻（Rs）時采用了轉(zhuǎn)換開關(guān)。當旋鈕指在Rv處時，高壓電極加上測試電壓。保護電極接地，當旋鈕指在Rs處時，保護電極加上測試電壓，高壓電極接地。 儀器使用完畢，應先切斷電源，將面板上各開關(guān)恢復到測試前的位置，拆除所有接線，將儀器安放保管好。

準備 

使用前，面板上的各開關(guān)位置應如下：

ａ） 倍率開關(guān)置于靈敏度zui低檔位置。

ｂ） 測試電壓開關(guān)置于“10V”處

c） “放電-測試”開關(guān)置于“放電”位置。

d） 電源總開關(guān)（POWER）置于“關(guān)”。

e） 輸入短路撳鍵置于“短路”。

f） 極性開關(guān)置于“0”。

檢查測試環(huán)境的濕度是否在允許的范圍內(nèi)。尤其當環(huán)境濕度高于80%以上時，對測量較高的絕緣電阻（大于10 11Ω及小于10-8 A）時微電流可能會導致較大的誤差。

接通電源預熱30分鐘，將極性開關(guān)置于“+”，此時可能發(fā)現(xiàn)指示儀表的指針會離開“∞”及“0”處，這時可慢慢調(diào)節(jié)“∞”及“0”電位器，使指針置于“∞”及“0”處。

Three, volume resistivity surface resistivity tester technical indicators

The 1 resistor measurement range: 0.01× 104 Ω～ 1× 1018 Ω.

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

3 double header display: 3.1/2 LED display

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

5 basic accuracy: 1% （ note ）

6: use environment temperature: 0℃ ~ 40 ℃, relative humidity <80%

7 built-in test voltage: 10/50/100/250/500/1000V arbitrary switching

The 8 power supply forms: AC 220V, 50HZ, power consumption is about 5W

六、 技術(shù)參數(shù) 

·         型 號 SB36固體（液體）體積電阻率及表面電阻率測試儀

·         額定電壓 10 100 250 500 1000 準確度 ±5 % 

·         電阻測量 1* 106～1* 1017準確度 ±10 % ±20 % 

 ·         微電流測量 1* 105～1* 1014準確度 ±10 % ±20 % 

·         外形尺寸/重量（MM /KG） 380W * 260D * 150H / 10 主要用途及特點: 

·         適用于科研、工廠、學校、企業(yè)部門對絕緣材料、電工產(chǎn)品、電子設(shè)備以及元件的絕緣測量和高阻值兆歐電阻的測量也可用著微電流測量，是一種直讀式和微電流兩用儀器。 

測試電壓（V） 誤 差 

DC—10V ±5% 

DC—50V ±5% 

DC—100V ±5% 

DC—500V ±5% 

DC—1000V ±5% 

　Four, volume resistivity surface resistivity meter working principle

According to the Ohm's law, the measured resistance is equal to voltage is applied through Rx V divided by the current I. The traditional high resistance meter is the working principle of measuring voltage V fixed, by measuring the current flows through the sampling resistor I to get the value of resistance. From Ohm's law can be seen, because the current I is inversely proportional to the resistance, but not proportional to the resistance, so the display value is nonlinear, namely the resistance to infinity, the current is zero, i.e., zero is∞, in the vicinity of the scale is very dense, with a low resolution. The scale is nonlinear. Because the measurement of different resistance, the voltage V also vary, so the average high resistance meter is poor accuracy, low resolution.

At the same time measure the voltage across the resistor V and the current through the resistor I, through the interior of the large scale integrated circuit to complete the voltage divided by the current calculation, and then the results obtained after A/D conversion to digital show resistance, even if the voltage across the resistor V and the current through the resistor I is changed at the same time, the display resistance value is not as common due to high resistance meter that measured voltage or current change of V I change, so, even if the measured voltage, resistance, power supply voltage is measured the changes in the results have little effect, the measurement accuracy is very high （ patent ）, theoretically the error can be zero, while the actual error can be done a few thousandths or extremely few.

七、測試電壓：

（V） 10V 50V 100V 250V 500V 1000V 

檔位 倍率 量限Ω 誤差 量限Ω 誤差 量限Ω 誤差 量限Ω 誤差 量限Ω 誤差 量限Ω 誤差 

1 102 1×106

—

2×107 ±10% 5×106

—

1×108 ±10% 1×107—

2×108 ±10% 2.5×107—

5×108 ±10% 5×107

—

1×109 ±10% 1×108

—

2×109 ±10% 

2 103 1×107

—

2×108 ±10% 5×107

—

1×109 ±10% 1×108—

2×109 ±10% 2.5×108—

5×109 ±10% 5×108

—

1×1010 ±10% 1×109

—

2×1010 ±10% 

3 104 1×108

—

2×109 ±10% 5×108

—

1×1010 ±10% 1×109—

2×1010 ±10% 2.5×109—

5×1010 ±10% 5×109

—

1×1011 ±10% 1×1010—

2×1011 ±10% 

4 105 1×109

—

2×1010 ±10% 5×109

—

1×1011 ±10% 1×1010—

2×1011 ±10% 2.5×1010—

5×1011 ±10% 5×1010—

1×1012 ±10% 1×1011—

2×1012 ±10% 

5 106 1×1010—

2×1011 ±10% 5×1010

—

1×1012 ±10% 1×1011—

2×1012 ±10% 2.5×1011—

5×1012 ±10% 5×1011—

1×1013 ±20% 1×1012—

2×1013 ±20% 

6 107 1×1011—

2×1012 ±10% 5×1011

—

1×1013 ±20% 1×1012—

2×1013 ±20% 2.5×1012—

5×1013 ±20% 5×1012—

1×1014 ±20% 1×1013—

2×1014 ±20% 

7 108 1×1012—

2×1013 ±20% 5×1012

—

1×1014 ±20% 1×1013—

2×1014 ±20% 2.5×1013—

5×1014 ±20% 5×1013—

1×1015 ±20% 1×1014—

2×1015 ±20% 

8 109 1×1013—

2×1014 ±20% 5×1013

—

1×1015 ±20% 1×1014—

2×1015 ±20% 2.5×1014—

5×1015 ±20% 5×1014—

1×1016 ±20% 1×1015—

2×1016 ±20% 

Typical application

1 measurements of anti-static shoes, conductive shoes resistance value

2, measurement of the antistatic material resistance and resistivity

3, measurement computer room with movable floor system resistance

4, measurement of insulation resistance （ rate）

5, photodiode dark current measurement

6, physics, optics and materials research

Canton company other insulating materials testing instruments:

BDJC-0-100KV dielectric breakdown testing instrument

BDJC series insulating materials at power frequencies of dielectric breakdown test instrument

BDJC series voltage dielectric strength test apparatus

BDJC series voltage breakdown testing instrument

BDJC series insulating paint film breakdown strength tester

BDJC capacitor voltage breakdown testing instrument

EST-121 volume surface resistivity measuring instrument

GDAT-A dielectric loss tester / dielectric constant test

GDAT-C model dielectric constant dielectric loss tester

BDH leakage resistance tester

BDH-B arc resistance tester

北廣公司其它絕緣材料檢測儀器: 

BDJC-0-100KV 介電擊穿試驗儀

BDJC系列絕緣材料工頻率介電擊穿試驗儀

BDJC系列電壓介電強度試驗儀器

BDJC系列 電壓擊穿試驗儀 

BDJC系列絕緣漆漆膜擊穿強度試驗儀

BDJC電容器紙工頻電壓擊穿試驗儀

BEST-121 體積表面電阻率測定儀 

GDAT-A介質(zhì)損耗測試儀/介電常數(shù)測試儀 

GDAT-C新型介電常數(shù)介質(zhì)損耗測試儀

BDH 耐漏電起痕試驗儀

BDH-B耐電弧試驗儀