概述
PR293系列納伏微歐測溫儀是一款適用于直流微小信號測量的高性能測試儀器,能夠高靈敏度地進(jìn)行電壓、電阻、電流及各類溫度信號量的采集及分析。作為溫度計(jì)量行業(yè)的專用儀器,PR293系列測溫儀具有豐富的溫度測試相關(guān)功能,使得溫度校準(zhǔn)及溫度量值傳遞過程變得簡單、便捷。
產(chǎn)品特點(diǎn)
1. 10nV/10μΩ的測試靈敏度:
測試靈敏度是電測儀器的關(guān)鍵技術(shù)參數(shù),超低噪聲放大器以及低紋波電源模塊的突破性設(shè)計(jì)大大降低了PR293測溫儀信號回路的讀數(shù)噪聲,而讀數(shù)噪聲的減小對于提高測試靈敏度至關(guān)重要。
2. 電阻動(dòng)態(tài)清零功能:
高高要求的電阻測量過程通常需要使用電流換向的方法,用以實(shí)現(xiàn)測量電阻真實(shí)數(shù)值的目的。PR293系列測溫儀具有“電阻動(dòng)態(tài)清零”功能,可以快速測得被測電阻的真值,而無需額外的電流換向操作。該功能可以根據(jù)實(shí)際需求,通過設(shè)置選項(xiàng)打開或者關(guān)閉。
3. 內(nèi)置5通道低噪聲掃描開關(guān):
PR293A型測溫儀后部集成了5組相互獨(dú)立的多功能測試端子,5組通道可獨(dú)立設(shè)置測試信號類型,無需任何外部開關(guān)即可進(jìn)行多通道的數(shù)據(jù)采集工作。低噪聲的設(shè)計(jì)可保障通過其接入的信號不會帶來額外的讀數(shù)噪聲。此外,5組測試通道具有*的通道間一致性。
4. 極低的溫度漂移:
PR293系列測溫儀內(nèi)置了極為精密的參考電阻,結(jié)合自校準(zhǔn)技術(shù),PR293測溫儀的溫度系數(shù)達(dá)到極低的水平,以100Ω量程為例,在10~35℃的環(huán)境溫度下,典型溫度系數(shù)為0.5ppm/℃。
5. 豐富的溫度計(jì)量功能:
PR293系列測溫儀支持多種溫度傳感器,可支持的傳感器范圍包括4種標(biāo)準(zhǔn)熱電偶、2種標(biāo)準(zhǔn)鉑電阻、8種工業(yè)鉑電阻及11種工作用熱電偶,并支持引用證書值或者修正值對測試結(jié)果進(jìn)行溫度溯源。
6. 出眾的易用性:
PR293測溫儀是為溫度計(jì)量行業(yè)量身定制的專用測試儀器,可顯示各種測試數(shù)據(jù)、曲線,并且可通過U盤進(jìn)行數(shù)據(jù)存儲,此外,程序中的統(tǒng)計(jì)功能還可以對數(shù)據(jù)隊(duì)列進(jìn)行/最小/平均值計(jì)算,以及多種溫度波動(dòng)性的計(jì)算,有助于在測試現(xiàn)場進(jìn)行直觀的數(shù)據(jù)分析。此外,PR293A型測溫儀還具有獨(dú)立的溫差測量模式,方便對各類恒溫設(shè)備進(jìn)行專業(yè)的溫場均勻性分析。
一般技術(shù)參數(shù)
重量 | 2.8kg(不含充電器) | 工作溫度 | 10℃~35℃ |
尺寸 | 230mm×200mm×105mm | 工作濕度 | 0~80%,非冷凝 |
電池類型 | 7.8V 6800mAh,可充電鋰電池 | 預(yù)熱時(shí)間 | 30分鐘預(yù)熱后有效 |
持續(xù)時(shí)間 | 6小時(shí) | 校準(zhǔn)周期 | 1年 |
產(chǎn)品選型
功能 | 量程 | 納伏微歐測溫儀 | 微歐測溫儀 | ||||
PR293AP | PR293AS | PR293BP | PR293BS | PR291AP | PR291AS | ||
電壓 | 30mV | ● | ● | ● | ● | / | / |
100mV | ● | ● | ● | ● | / | / | |
1V | ● | ● | ● | ● | / | / | |
50V | ● | ● | ● | ● | / | / | |
電流 | 50ma | ● | ● | ● | ● | / | / |
電阻 | 90Ω | ● | ● | ● | ● | ● | ● |
350Ω | ● | ● | ● | ● | ● | ● | |
1KΩ | ● | ● | ● | ● | ● | ● | |
10KΩ | ● | ● | ● | ● | ● | ● | |
熱電偶 | TC | ● | ● | ● | ● | / | / |
熱電阻 | RTD | ● | ● | ● | ● | ● | ● |
0.002級 | / | ● | / | ● | / | ● | / |
0.005級 | / | / | ● | / | ● | / | ● |
后置通道數(shù) | / | 5 | 5 | 2 | 2 | 2 | 2 |
專用參考端 | / | ● | ● | ● | ● | / | / |
技術(shù)參數(shù)
量程 | 測量范圍 | PR293AP/BP 1年準(zhǔn)確度 ±(ppm讀數(shù)+ppm量程) | PR293AS/BS 1年準(zhǔn)確度 ±(ppm讀數(shù)+ppm量程) | 分辨力 | 備注 |
30mV | -30.00000mV~35.00000mV | 15 + 4.0 | 20 + 6.7 | 10nV | 輸入阻抗≥1GΩ |
100mV | -110.00000mV~110.00000mV | 15 + 3.5 | 40 + 4.0 | 10nV | |
1V | -1.1000000V ~1.1000000V | 15 + 2.0 | 35 + 4.0 | 0.1μV | |
50V | -55.00000V~55.00000V | 25 + 2.0 | 50 + 4.0 | 10μV | 輸入阻抗≥1MΩ |
90Ω | 0.00000Ω~95.00000Ω | 20 + 2.5 | 30 + 4.4 | 10μΩ | 四線制測量,1mA激勵(lì)電流, 使用“電阻動(dòng)態(tài)清零”功能 |
350Ω | 0.0000Ω~360.0000Ω | 15 + 1.5 | 30 + 3.0 | 0.1mΩ | |
1KΩ | 0.0000000kΩ ~ 1.1000000kΩ | 15 + 1.0 | 30 + 2.0 | 0.1mΩ | |
10KΩ | 0.000000kΩ ~ 11.000000kΩ | 20 + 2.0 | 30 + 3.0 | 1mΩ | 四線制測量,0.1mA激勵(lì)電流 |
50mA | -55.000000 mA ~ 55.000000 mA | 30 + 3.0 | 40 + 4.0 | 1nA | 檢流電阻=10Ω |
類型 | 測量范圍 | PR293AP/BP 1年準(zhǔn)確度 | PR293AS/BS 1年準(zhǔn)確度 | 分辨力 | 備注 |
SPRT25 | -200.0000 ℃ ~ 660.0000℃ | -200℃,0.003℃ 0℃,0.007℃ 300℃,0.014℃ 600℃,0.022℃ | -200℃,0.005℃ 0℃,0.011℃ 300℃,0.022℃ 600℃,0.034℃ | 0.0001℃ | 使用電阻動(dòng)態(tài)清零功能 |
SPRT100 | -200.0000 ℃ ~ 740.0000℃ | -200℃,0.002℃ 0℃,0.005℃ 300℃,0.010℃ 600℃,0.016℃ | -200℃,0.004℃ 0℃,0.011℃ 300℃,0.021℃ 600℃,0.033℃ | ||
Pt100 | |||||
Pt10 | -200.0000 ℃ ~ 800.0000℃ | 0℃,0.011℃ 300℃,0.018℃ | 0℃,0.018℃ 300℃,0.029℃ | ||
Pt1000 | 0℃,0.013℃ 300℃,0.024℃ | 0℃,0.015℃ 300℃,0.026℃ |
類型 | 測量范圍 | PR293AP/BP 一年準(zhǔn)確度 | PR293AS/BS 一年準(zhǔn)確度 | 分辨力 | 備注 |
S | 100.000 ℃ ~ 1768.000 ℃ | 300℃,0.017℃600℃,0.019℃ 1000℃,0.023℃ | 300℃,0.027℃600℃,0.029℃ 1000℃,0.034℃ | 0.001℃ | 符合ITS-90溫度標(biāo)準(zhǔn) 不包括參考端補(bǔ)償誤差 |
R | |||||
B | 250.000 ℃ ~ 1820.000 ℃ | 300℃,0.042℃600℃,0.025℃ 1000℃,0.021℃ 1500℃,0.024℃ | 300℃,0.069℃600℃,0.040℃ 1000℃,0.033℃ 1500℃,0.035℃ | ||
K | -100.000 ℃ ~ 1300.000 ℃ | 300℃,0.013℃600℃,0.017℃ 1000℃,0.025℃ | 300℃,0.022℃600℃,0.032℃ 1000℃,0.053℃ | ||
N | -200.000 ℃ ~ 1300.000 ℃ | 300℃,0.014℃600℃,0.017℃ 1000℃,0.024℃ | 300℃,0.022℃600℃,0.032℃ 1000℃,0.048℃ | ||
J | -100.000 ℃ ~ 900.000 ℃ | 300℃,0.011℃600℃,0.015℃ 1000℃,0.021℃ | 300℃,0.019℃600℃,0.030℃ 1000℃,0.046℃ | ||
E | -90.000℃ ~ 700.000 ℃ | 300℃,0.009℃600℃,0.013℃ 1000℃,0.020℃ | 300℃,0.016℃600℃,0.028℃ 1000℃,0.046℃ | ||
T | -150.000 ℃ ~ 400.000 ℃ | -150℃,0.027℃ 300℃,0.010℃ | -150℃,0.041℃ 300℃,0.017℃ | ||
參考端補(bǔ)償 | -5.00 ℃ ~ 40.00 ℃ | 0.2℃ | 0.01℃ | 使用熱電偶插座 |