Witt 

Witt 
WITT Kältemaschinenfabrik 公司是一家家族企業(yè)，成立于 1896 年，從成立之初就開始從事工業(yè)制冷設備的生產(chǎn)，擁有 100-120 多名員工，設計、開發(fā)和生產(chǎn)制冷泵、調(diào)節(jié)器、壓力單元等制冷組件，位于亞琛的辦公室向世界各地的客戶提供制冷組件，并提供

TH. WITT Kältemaschinenfabrik 公司是一家家族企業(yè)，成立于 1896 年，從成立之初就開始從事工業(yè)制冷設備的生產(chǎn)，擁有 100-120 多名員工，設計、開發(fā)和生產(chǎn)制冷泵、調(diào)節(jié)器、壓力單元等制冷組件，位于亞琛的辦公室向世界各地的客戶提供制冷組件，并提供

氣體分析儀

氣體分析儀OXYBABY®M +

用于MAP封裝的O2-和O2 / CO2-頂空氣體分析儀，標準版

頂空氣體分析儀OXYBABY®6.0

O2和CO2氣體分析儀，用于MAP封裝的頂部空間，高級

氣體分析儀OXYBABY®M + P

用于壓力管線的O2-，CO2-或O2 / CO2-氣體分析儀，標準版

氣體分析儀OXYBABY®6.0 P

用于壓力管線的O2-，CO2或O2 / CO2-氣體分析儀，高級版

氣體分析儀OXYBABY®Med

用于醫(yī)療應用的O2-和O2 / CO2-氣體分析儀

氣體分析儀OXYBEAM

激體分析儀（O2或CO2），用于包裝的無損樣品測試

氣體分析儀PA 7.0

用于O2，CO2或O2 / CO2的緊湊型氣體分析儀，各種應用

氣體分析儀MAPY 4.0

適用于O2，CO2或O2 / CO2的高級氣體分析儀，各種應用

在線氣體分析儀MAPY LE

Gas analyser for O2, CO2 or O2/CO2, e.g. for flow packs

Inline Gas Analyser MAPY VAC

for traysealers and thermoformers, O2 or O2/CO2

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Gas Analysers

Gas analysers from Witt determine gas concentrations in gas mixtures quickly and precisely and are highly versatile. State-of-the-art sensors and intuitive controls allow easy handling of the gas analysers, guarantee exact analysis results and ensure the quality of your processes. Depending on the type of application, the gas analysers can be supplied separately or integrated into gas mixing systems.

As stationary or portable gas analysers for sampling or continuous gas analysis, they are available for a wide range of technical gases and applications. Witt offers gas analysers for example for oxygen, carbon dioxide, helium, hydrogen or methane. The gas analysers are used, for example, in food and pharmaceutical industries, in hospitals and medical applications, to control gas supply lines in thermal processing plants and numerous other industrial applications.

As special versions of the gas analysers, Witt also offers devices for indoor air monitoring as well as for humidity measurement or dew point analysis of gases.
 

Gas analysers for the control of protective atmospheres in the food and pharmaceutical industries

Gas analysers are essential for quality control when a process involves packaging under protective atmosphere. The quality control can be done either as continuous gas analysis directly during the packaging process or downstream to the packaging process by means of sample analysis.

In continuous gas analysis, an analysis module is integrated into the gas mixing system. The gas analyser then continuously monitors the composition of the gas mixture.

Sample analysis is carried out as quality control in almost all companies packaging with modified atmospheres. A needle is used to remove a gas sample from the packaging. Probably the world's best-known model from the Witt product range is the handheld gas analyser OXYBABY®. This reliable assistant for checking protective atmospheres is one of the best-selling gas analysers in the food industry.

Witt gas analysers are reliable and require only a very small quantity of gas. Thus, they are also suitable for packaging with a very small gas-containing headspace, i.e. a small amount of inert gas in the packaging. Because of this, Witt gas analysers are also used for checking packaging of medical products in the pharmaceutical industry, such as vials, ampoules or blister packs.
 

Non-destructive random sampling with gas analysers

The nondestructive control of MAP packaging is also possible with Witt gas analysers. Using state-of-the-art and safe laser technology, the oxygen content can be reliably determined in transparent packaging.
 

Gas analysers for highest quality in thermal processing plants

Protective and surface finishing demands highly accurate gas mixtures. But these highest quality steel finishing processes also requires the necessary control and safety. So for these processes Witt offers integrated gas analysis systems in the gas mixers, which continuously monitor and optimise the composition of the forming gases.
The combination of Witt gas analysers with gas mixers assures safety when handling flammable gases.
 

Modern gas sensors as the heart of gas analysers

The technical heart of the Witt gas analysers is the actual measuring cell. For the measurement of oxygen and carbon dioxide, the following measurement principles are applied:
 

1. Zirconia measuring cells

Zirconia measuring cells are characterised by their high response speed and a relatively long service life. Their sensitivity also allows measurements in the ppm range. On the other hand, the ceramic sensor is very sensitive to pressure surges and has a high power consumption due to the necessary heating. Zirconia gas analysers measuring cells are often used in stationary analysers.
 

2. Electrochemical measuring cells

Electrochemical measuring cells are relatively inexpensive and require no supply voltage. Disadvantages are the relatively short lifetime at too high oxygen concentrations, and a relatively long response time or measurement time. In addition, a frequent calibration of the gas analyser is necessary.
 

3. Paramagnetic measuring cells

使用順磁測量單元，可以獲得具有較長校準間隔的*穩(wěn)定測量信號。由于這是物理測量原理，因此電池使用壽命長。另一方面，這些相對昂貴的測量單元不允許在ppm范圍內(nèi)進行分析，并且容易受到高氣壓下的誤差的影響。它們優(yōu)選在高氧氣濃度下使用。
 

4.紅外傳感器

為了分析二氧化碳氣體，通常使用帶有紅外傳感器的分析儀。這些是相對便宜和低磨損的。

根據(jù)具體應用，Witt還依賴于其他氣體分析技術(shù)，例如用于確定二元氣體混合物的熱導率原理或氣相色譜儀中的分離過程。

MAP氣體分析儀手冊