EE820
苛刻環(huán)境用二氧化碳變送器
EE820是專為苛刻環(huán)境應(yīng)用設(shè)計(jì)的一款高量程CO2變送器。
生產(chǎn)過程中特有的多點(diǎn)二氧化碳和溫度校準(zhǔn)步驟保證了變送器在整個(gè)溫度工作范圍測量的高精度。
EE820采用的是E+E單光源雙光速紅外線測量技術(shù)，可自動(dòng)進(jìn)行光源老化補(bǔ)充，并具有較高的抗污染能力，從而保證了產(chǎn)品卓越的長期穩(wěn)定性。為了應(yīng)對(duì)提高響應(yīng)時(shí)間的要求，EE820過濾器的背面安裝了一個(gè)風(fēng)扇，用于加速被測空氣的循環(huán)和流動(dòng)。
配備的IP54防護(hù)等級(jí)的外殼和特殊的過濾器，使EE820可以應(yīng)用在污染工況中，例如農(nóng)業(yè)和畜牧業(yè)。在進(jìn)行清潔操作前，使用M12接頭可以方便拆除變送器。
典型應(yīng)用
益加義專利技術(shù)--CO2自動(dòng)校準(zhǔn)程序采用了雙光源雙光束的方法。 NDIR CO2測量元件保證了其測量的長期穩(wěn)定性。
測量原理
益加義專利技術(shù)--CO2自動(dòng)校準(zhǔn)程序采用了雙光源雙光束方法，通過測量固定波長的紅外線光強(qiáng)，將其轉(zhuǎn)換為CO2的吸收量。
兩個(gè)紅外線光源有著不同的工作周期：其中一個(gè)紅外光源作為測量光源，每隔30秒測量一次CO2濃度，并發(fā)送測量信號(hào)。另一個(gè)紅外光源作為對(duì)比光源，僅在自動(dòng)校準(zhǔn)時(shí)工作，每24小時(shí)被激活2次。對(duì)比光源的工作時(shí)間很短，老化漂移量可以忽略，因此可用來定期精確校準(zhǔn)測量光源。
益加義公司擁有多年薄膜技術(shù)的研發(fā)經(jīng)驗(yàn)和現(xiàn)代化的潔凈室車間。紅外測量單元的測量腔體鍍金工藝和組裝工藝均在高等級(jí)的潔凈室完成，這對(duì)儀表長期穩(wěn)定的測量十分重要。
優(yōu)勢(shì)
- 一個(gè)穩(wěn)定的紅外對(duì)比光源，補(bǔ)償漂移
- 只需一個(gè)紅外波長濾波器
- 測量單元設(shè)計(jì)精致
- 薄膜覆蓋在測量入口處，有效保護(hù)測量單元免受灰塵顆粒污染
技術(shù)資料
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0...2000 / 5000 / 10000ppm CO2
Measuring range
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0...2000ppm: ± (50ppm + 2% of measuring value)
Accuracy
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0...5000ppm: ± (50ppm + 3% of measuring value)
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0...10000ppm: ± (100ppm + 5% of measuring value)
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0...5V / 10V or 4...20mA
Outputs
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EE820
CO2 transmitter for Demanding Applicatons
The EE820 is designed for use in harsh, demanding applications. A multip-point CO2 and temperature factory adjustment procedure leads to an excellent CO2 measurement accuracy over the entire temperature working range.
The EE820 incorporates the E+E dual wavelength NDIR CO2 sensor, which compensates for ageing effects, is highly insensitive to pollution and offers outstanding long term stability.For fast response time requirements there is an EE820 version with forced air circulation created by a fan installed behind the filter.With its robust, functional housing and a special integrated filter the EE820 can be installed in polluted applications such as agriculture and livestock barns. The M12 connector option facilitates easy removal of the EE820 before site cleaning operations.
An optional kit facilitates easy configuration and adjustment of the EE820.
Key Features
E+E dual wavelength NDIR CO2 working principle
Measuring range up to 10,000ppm
Auto-calibration for excellent long term stability
Very low Temperature dependency
Fast response time version
Robust and functional enclosure
Highly insensitive to pollution
Voltage or current analogue outputs
Fast and easy installation
Easy user configuration and adjustment
Typical Applicatons
Greenhouses
Fruit and vegetable storage
Stables
Hatcheries and Incubators
Vehicles, Trains, Trams
