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新設(shè)備可以在任何環(huán)境下實(shí)現(xiàn)安全準(zhǔn)確的可靠測(cè)量

NEWS RELEASE – Aug. 15, 2006 – National Instruments today announced 12 new isolated M and S Series multifunction data acquisition (DAQ) devices. These devices combine the safety of isolation with the high-performance timing, amplification and calibration technologies of existing M Series DAQ devices for increased accuracy. Built-in isolation increases the safety of data acquisition devices and eliminates common problems that can ruin measurement accuracy. The new multifunction devices offer 16-bit accuracy, 250 kS/s sampling rates, ±10 V or ±20 mA analog inputs, ±10 V or 0-20 mA analog outputs and 5 V TTL/CMOS or 24 V digital inputs and outputs.

8月15日消息——美國(guó)國(guó)家儀器公司今天發(fā)布了12款隔離式M系列和S系列的多功能數(shù)據(jù)采集（DAQ）設(shè)備。這些設(shè)備結(jié)合了隔離安全性以及現(xiàn)有M系列DAQ設(shè)備的高性能調(diào)速、放大和校準(zhǔn)技術(shù)，提高了精確度。內(nèi)置隔離作用提高了數(shù)據(jù)采集設(shè)備的安全性，消除了可以破壞測(cè)量精確度的普通問(wèn)題。新的多功能設(shè)備提供了16位的精確度，250 kS/s的取樣率，±10 V 或者 ±20 mA的模擬輸入，±10 V 或者 0-20 mA的模擬輸出，以及5 V TTL/CMOS 或者 24 V的數(shù)字輸入和輸出。

The new isolated M and S Series devices offer channel-to-channel or bank isolation with 1,950 VDC/1,400 Vrms transient withstand for 5 s to a PCI bus, which protects expensive equipment, the user and data from hazardous voltage spikes, transient signals and electrical noise. Isolation works by electrically separating the circuit’s front end, where hazardous voltages can exist, from the rest of the data acquisition system. Isolation is especially important when taking measurements from sensors in the proximity of wall power, large motors, high-voltage switches or other high-voltage lines.

新款隔離式M系列和S系列設(shè)備提供了通道至通道或者柵隔離，對(duì)一個(gè)PCI現(xiàn)場(chǎng)儀器具有5秒的1,950 VDC/1,400 Vrms 瞬時(shí)承受力，保護(hù)昂貴設(shè)備、使用者和數(shù)據(jù)免受到危險(xiǎn)電壓尖脈沖、瞬時(shí)信號(hào)以及電噪的損害。隔離通過(guò)從數(shù)據(jù)采集系統(tǒng)的其它地方將存在危險(xiǎn)電壓的電路前端電力地分離而起作用。隔離作用在測(cè)量靠近墻驅(qū)動(dòng)、大型電機(jī)、高壓開(kāi)關(guān)或者其它高壓線路的傳感器時(shí)就尤其重要。

Isolated M and S Series devices also reject common-mode voltages and prevent ground loops from forming, eliminating two common problems for data acquisition system users. High common-mode voltages can make it impossible to measure the signal in a non-isolated data acquisition system and can even damage the system. The new isolated M and S Series devices can measure from sensors with the signal plus common-mode voltages of up to 60 V. Ground loops, which occur when there is a difference between the ground voltages of the measurement system and the signal being measured, can result in high currents flowing between the two grounds and can damage equipment and ruin accuracy.

隔離式的M系列和S系列設(shè)備還可以抵制普通模式的電壓，避免了接地環(huán)路的生成，為數(shù)據(jù)系統(tǒng)使用者排除了兩個(gè)普遍問(wèn)題。普通模式高壓可以導(dǎo)致不能在一個(gè)非隔離式數(shù)據(jù)采集系統(tǒng)中測(cè)量信號(hào)，甚至?xí)p壞系統(tǒng)。新型的隔離式M系列和S系列設(shè)備可以測(cè)量傳感器的信號(hào)以及高達(dá)60V的普通模式電壓。因測(cè)量系統(tǒng)和所測(cè)量的信號(hào)之間的地壓差異而產(chǎn)生的接地環(huán)路可以導(dǎo)致兩點(diǎn)間的高電流流動(dòng)，從而損壞設(shè)備和破壞精確度。

Isolated M Series devices integrate seamlessly with the National Instruments LabVIEW graphical development platform, and users can configure the devices using NI measurement and services software.

隔離式M系列設(shè)備與國(guó)家儀器的LabVIEW 繪圖開(kāi)發(fā)平臺(tái)無(wú)縫整合，而且使用者可以利用國(guó)家儀器的測(cè)量和服務(wù)軟件配置設(shè)備。

About NI Data Acquisition

關(guān)于NI數(shù)據(jù)采集

By integrating commercially available silicon and bus technologies with innovative designs, NI data acquisition (DAQ) products continue to improve measurement speed and accuracy while reducing cost for engineers and scientists. NI data acquisition devices are available on the most widely used buses, including PCI, PXI, PCI Express and USB, and work with the industry’s most popular operating systems such as Windows, Linux and Mac OS X.

通過(guò)整合適用于商業(yè)的硅技術(shù)和現(xiàn)場(chǎng)技術(shù)以及創(chuàng)新的設(shè)計(jì)，NI 數(shù)據(jù)采集產(chǎn)品繼續(xù)提高著測(cè)量速度和精確度，同時(shí)減少工程師和科學(xué)家的成本。NI的數(shù)據(jù)采集設(shè)備適用于最廣泛的應(yīng)用現(xiàn)場(chǎng)設(shè)備，包括PCI， PXI，PCI Express 和 USB，以及可以工作于例如Windows， Linux 和 Mac OS X 等最流行的操作系統(tǒng)。

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