簡要描述:本儀器既可測(cè)量超高電阻,又可測(cè)極微弱電流。采用了大規(guī)模集成電路以及的技 術(shù),使儀器體積小、重量輕、準(zhǔn)確度高。以數(shù)字液晶顯示電阻并同時(shí)直接顯示流過被測(cè)電阻的電流。電阻量程從1×104Ω ~1×1018Ω, 電流測(cè)量范圍 為2 ×10-4A ~1 ×10-16A。機(jī)內(nèi)測(cè)試電壓為DC10V、50V、100V、250V、500V、1000V。
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ZST-121體積電阻率表面電阻率測(cè)定儀
注 意 事 項(xiàng)
儀器使用前請(qǐng)仔細(xì)閱讀以下內(nèi)容,否則將造成儀器損壞或電擊情況。
1. ★檢查儀器后面板電壓量程是否置于10V檔,電流電阻量程是否置于104檔。
2. ★接通電源調(diào)零,(注意此時(shí)主機(jī)不得與屏蔽箱線路連接)在“Rx"兩端開路的情況下,調(diào)零使電流表的顯示為0000。然后關(guān)機(jī)。
3. ★將待測(cè)試樣平鋪在不保護(hù)電極正中央,然后用保護(hù)電極壓住樣品,再插入被保護(hù)電極(不保護(hù)電極、保護(hù)電極、被保護(hù)電極應(yīng)同軸且確認(rèn)電極之間無短路)。
4. ★測(cè)體積電阻時(shí)測(cè)試按鈕撥到Rv邊,測(cè)表面電阻時(shí)測(cè)試按鈕撥到Rs邊,
5. ★接好測(cè)試線,將測(cè)試線將主機(jī)與屏蔽箱連接好。量程置于104檔,打開主機(jī)后面板電源開關(guān)按鈕。從儀器后面板調(diào)電壓按鈕到所要求的測(cè)量電壓。(比如:GBT 1692-2008 硫化橡膠 絕緣電阻率的測(cè)定 標(biāo)準(zhǔn)中注明要求在500V電壓進(jìn)行測(cè)定,那么電壓就要升到500V)
6. ★電流電阻量程按鈕從低檔位逐漸撥高檔,每撥一次停留1-2秒觀察顯示數(shù)字,當(dāng)被測(cè)電阻大于儀器測(cè)量量程時(shí),電阻表顯示“1",此時(shí)應(yīng)繼續(xù)將儀器撥到量程更高的位置。測(cè)量儀器有顯示值時(shí)應(yīng)停下,在1min的電化時(shí)間后測(cè)量電阻,當(dāng)前的數(shù)字乘以檔次即是被測(cè)電阻。
7. ★測(cè)試完畢先將量程撥至(104)檔,然后將測(cè)量電壓撥至10V檔,zui后將測(cè)試按鈕撥到中央位置后關(guān)閉電源。然后進(jìn)行下一次測(cè)試。
8. ★應(yīng)在“Rx"兩端開路時(shí)調(diào)零,一般一次調(diào)零后在測(cè)試過程中不需再調(diào)零。
9. ★禁止將“RX"兩端短路,以免微電流放大器受大電流沖擊。
10. ★不得在測(cè)試過程中不要隨意改動(dòng)測(cè)量電壓。
11. ★測(cè)量時(shí)從低次檔逐漸撥往高次檔。
12. ★接通電源后,手指不能觸及高壓線的金屬部分。
13. ★不得測(cè)試過程中不能觸摸微電流測(cè)試端。
14. ★在測(cè)量高阻時(shí),應(yīng)采用屏蔽盒將被測(cè)物體屏蔽。
15. ★嚴(yán)禁在試測(cè)過程隨意改變電壓量程及在通電過程中打開主機(jī)。
16. ★嚴(yán)禁電流電阻量程未在104檔及電壓在10V檔,更換試樣。
ZST-121體積電阻率表面電阻率測(cè)定儀
操作方式
★ZST-121體積、表面電阻率測(cè)定儀是一臺(tái)能測(cè)量*電阻和非常微弱電流的精密儀器是因?yàn)闄C(jī)器內(nèi)有一個(gè)超高性能的靜電計(jì)放大器,盡管儀器有多種保護(hù)措施,這個(gè)超高性能的靜電放大器在以下這些不正確操作使用中均可能因過大電流沖擊、過電壓或放電等*損壞或降低其測(cè)量精度與性能。
測(cè)試過程 | 不正確的操作方式 | 后果 | 是否閱讀 |
開機(jī)前
|
沒有將電壓撥至10V,電阻電流量程檔撥至104
|
過電流沖擊造成儀器放大器過電流而損壞
|
|
測(cè)試過程
|
隨意調(diào)節(jié)后面板電壓量程而改變測(cè)試電壓
| 過電流或反向放電沖擊造成儀器過電流而損壞
|
|
測(cè)試過程 | 改變屏蔽箱上體面電阻,表面電測(cè)測(cè)試開關(guān) | 過電流或反向放電沖擊造成儀器過電流而損壞 |
|
測(cè)試過程 | 測(cè)試電壓過高,導(dǎo)致測(cè)試材料擊穿 | 過電流或反向放電沖擊造成儀器過電流而損壞或測(cè)量性能降低 |
|
測(cè)試過程 | 微電流測(cè)量線與高壓線短路 | 過電流或反向放電沖擊造成儀器過電流而損壞或測(cè)量性能降低 |
|
測(cè)試完成
| 未將電壓量程撥至10V,電阻電流量程檔撥至104進(jìn)行關(guān)機(jī)。
| 過電流或反向放電沖擊造成儀器過電流而損壞或測(cè)量性能降低 |
|
ZST-121體積電阻率表面電阻率測(cè)定儀概述
本儀器既可測(cè)量超高電阻,又可測(cè)極微弱電流。采用了大規(guī)模集成電路以及的技 術(shù),使儀器體積小、重量輕、準(zhǔn)確度高。以數(shù)字液晶顯示電阻并同時(shí)直接顯示流過被測(cè)電阻的電流。電阻量程從1×104Ω ~1×1018Ω, 電流測(cè)量范圍 為2 ×10-4A ~1 ×10-16A。機(jī)內(nèi)測(cè)試電壓為DC10V、50V、100V、250V、500V、1000V。
本儀器具有精度高、顯示迅速、穩(wěn)定性好、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(jì)算機(jī)房防靜電活動(dòng)地板等電阻值的檢驗(yàn)以及絕緣材料和電子電器產(chǎn)品的絕緣電阻測(cè)量。本儀器除能測(cè)電阻外,還能直接測(cè)量電流如電子器件暗電流等。
ZST-121體積電阻率表面電阻率測(cè)定儀主要特點(diǎn)
電阻測(cè)量范圍 1×104Ω ~1×1018 Ω;
電流測(cè)量范圍 2×10-4A ~1×10-16A;
體積小、重量輕、準(zhǔn)確度高;
*的被測(cè)電阻、和流過電阻的電流雙顯示,使操作測(cè)量更加方便;
性能穩(wěn)定、讀數(shù)方便;
既能測(cè)電阻又能測(cè)電流;
測(cè)試電壓有六種選擇DC10V、50V、100V、250V、500V、1000V;
使用操作簡便,在任何電阻量程和測(cè)試電壓下均直接讀顯示數(shù)字結(jié)果,免去要乘以一個(gè)系數(shù)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。
ZST-121體積電阻率表面電阻率測(cè)定儀主要應(yīng)用范圍
材料高阻測(cè)試測(cè)量如防靜電產(chǎn)品(防靜電鞋、防靜電塑料橡膠制品、計(jì)算機(jī)房防靜電活動(dòng)地板等)電阻值的檢測(cè);
材料體電阻(率)和表面電阻(率)測(cè)量;
電化學(xué)和材料測(cè)試,以及物理,光學(xué)和材料研究;
微弱電流測(cè)量如光電效應(yīng)和器件暗電流測(cè)量。
ZST-121體積電阻率表面電阻率測(cè)定儀 技術(shù)指標(biāo)
1. 電阻測(cè)量范圍: 1×104Ω ~1×1018Ω,分為十個(gè)量程。
2. 電流測(cè)量范圍為2×10-4A ~1×10-16A
3. 全數(shù)字液晶屏顯示。
4. 準(zhǔn)確度: 準(zhǔn)確度優(yōu)于下表
量程 | 有效顯示范圍 | 20~30℃ RH<80% |
104 | 0.01~19.99 | 1% |
105 | 0.01~19.99 | 1% |
106 | 0.01~19.99 | 1% |
107 | 0.01~19.99 | 1% |
108 | 0.01~19.99 | 1% |
109 | 0.01~19.99 | 1% |
1010 | 0.01~19.99 | 5%+2字 |
1011 | 0.01~19.99 | 5%+2字 |
1012 | 0.01~19.99 | 5%+5字 |
1013 | 0.01~19.99 | 10%+5字 |
1014 | 0.01~19.99 | 10%+5字 |
1014以上 | 0.01~19.99 | 10-15%+5字 |
( 超出有效顯示范圍時(shí)誤差有可能增加)測(cè)試電流準(zhǔn)確度與電阻相同
測(cè)試電壓準(zhǔn)確度為 10%
5. 使用環(huán)境: 溫度 -10℃~50℃ 相對(duì)濕度<90%。
6. 測(cè)試電壓: DC10V、50V、100V、250V、500V、1000V。±10%
7. 供電形式: AC 220V,50HZ,功耗約10W。
8. 儀器尺寸: 300mm× 280mm× 150 mm。
9. 質(zhì)量: 約3.0KG。
ZST-121體積電阻率表面電阻率測(cè)定儀工作原理
根據(jù)歐姆定律,被測(cè)電阻R等于施加電壓V除以通過的電流I。即
V
R= ---
I
傳統(tǒng)的儀器的工作原理是測(cè)量電壓V固定,通過測(cè)量流過被測(cè)物體的電流I以標(biāo)定電阻的刻度來讀出電阻值。從上式可以看出,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)的精度是很難提高的。
ZST-121體積、表面電阻率測(cè)定儀是同時(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。
Instrument for measuring volume resistivity of the surface resistivity of ZST-121
Note that
The instrument before use, please read the following carefully, otherwise it will cause the instrument damage or shock condition.
1 * check the instrument panel voltage range is placed after the 10V file, the currentresistance range is placed 104 file.
2. Connect the power supply zero, (note that when the host shall not be connected with theshielding box line) in the "Rx" both ends open circuit case, zero to display the current table0000. Then shut down.
3. The test samples will be tiled without protecting the electrode is central, and then use theguard electrode pressed samples, and then insert the protected electrode (do not protect theelectrode, electrode, electrode protection protected should be no short circuit between the coaxial electrodes and confirm).
The test button dial to 4 * Rv edge measuring volume resistance, surface resistancemeasurement when the test button dial to Rs side,
5 * connected test line, will test line will host and shielding box connected. The range is arranged in the 104 file, open the computer after the panel power switch button. From the instrument panel after voltage regulating button to measure the voltage required. (for example: GBT determination standard of 1692-2008 vulcanized rubber insulation resistivityindicate requirements were determined, in the 500V voltage the voltage will rise to 500V)
6. Current resistance range from low level gradually dial button high-grade, each dial againstay 1-2 seconds to observe the digital display, when the measured resistance greater than the instrument measurement range, resistance meter shows "1", this time should continue toinstrument dial to range to a higher position. Measuring instruments have displayed valueshould be stopped, measuring the resistance in the electrochemical after time 1min, the current number multiplied by the grade is measured resistance.
7. The test finished first range dial to (104) file, and then measuring the voltage transferred to the 10V file, will be the final test button dial to the central position after power off. And thenthe next test.
8 it should be in the "Rx" open end tune zero, a general tone in the testing process does not need to be zero zero.
9 * ban the use of "RX" ends in order to avoid short circuit, a micro current amplifier by the large current impact.
10 * not in the test process, do not arbitrarily change the voltage measurement.
11. When measured from low to higher gear shifting gear gradually.
12. After the power is switched on, the metal part of the finger can not touch the high-voltage wire.
13. Shall not touch the micro current measurement end testing process.
14. The measurements on high resistance, should use the shielding box of the object isshielded.
15 it is strictly prohibited in the testing process to randomly change the voltage range andopen the host in the electrifying process.
It is strictly prohibited to 16 current resistance range in 104 stalls and voltage in the 10V file,the replacement of specimen.
Instrument for measuring volume resistivity of the surface resistivity of ZST-121
Mode of operation
ZST-121 volume, surface resistivity tester is a precision measurement instrument of highresistance and very weak current is because the machine has a high performance of theelectrometer amplifier, although the instrument has many protection measures, the ultra high performance electrostatic amplifier in these incorrect operation in use are likely due to too large the current impact, over voltage or discharge of permanent damage or reduce themeasurement accuracy and performance.
The testing process
Incorrect operation mode
The consequences
Whether you read
Before starting the machine
No voltage shifting to 10V, resistance current range shift shifting to 104
Overcurrent impact instrument amplifier overcurrent damage
The testing process
Free adjustment after the panel voltage range and change the test voltage
Over current or reverse discharging overcurrent damage caused by shock instrument
The testing process
Change the shielding box on a decent resistance, surface electrical test switch
Over current or reverse discharging overcurrent damage caused by shock instrument
The testing process
The test voltage is too high, resulting in the breakdown of test materials
Over current or reverse discharge impact instrument over current and the damage orreduced performance measurement
The testing process
Short micro current measurement line and the high voltage line
Over current or reverse discharge impact instrument over current and the damage orreduced performance measurement
Test completed
The voltage range will not be allocated to 10V, resistance current range shift shifting to 104shutdown.
Over current or reverse discharge impact instrument over current and the damage orreduced performance measurement
ZST-121 determination of volume resistivity tester overview of surface resistivity
This instrument can measure both ultra high resistance, and can be measured extremely weak current. Using large scale integrated circuit and new patent technology, the instrumenthas the advantages of small volume, light weight, high accuracy. With digital liquid crystal display resistance and directly display the current flows through the measured resistance.Resistance range from 1 * 104 to 1 * 1018 Omega Omega, current measuring range of 2 * 10-4A to 1 * 10-16A. The built-in test voltage of DC10V, 50V, 100V, 250V, 500V, 1000V.
The instrument has high precision, good stability, show rapid, convenient reading, suitable formeasuring insulation resistance in anti-static products such as anti-static shoes, anti-staticplastic and rubber products, computer room inspection activities such as anti electrostaticfloor value of resistance and insulation materials and electronic products. In addition to the instruments can measure resistance, can also direct current measurements such as the electronic devices such as dark current.
The main features of ZST-121 instrument for determination of volume resistivity surface resistivity
Resistance measurement range of 1 * 104 to 1 * 1018 Omega omega;
The current measurement range of 2 * 10-4A to 1 * 10-16A;
Small volume, light weight, high accuracy;
Current flowing through the resistor, and the resistor is measured the unique dual display,make the operation more convenient measurement;
Stable performance, easy reading;
Not only can measure resistance and can measure current;
The test voltage is six DC10V, 50V, 100V, select 250V, 500V, 1000V;
Easy to use, in any resistance range and testing
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