德爾格*檢測管

德國德爾格Drager*氣體檢測管別名氰化氫氣體檢測管，是一種具有苦杏仁特殊氣味的無色液體。易溶于水、酒精和乙迷。易在空氣中均勻彌散，在空氣中可燃燒。氰化氫在空氣中的含量達到5.6%~12.8%時，具有爆炸性。氰化氫為氣體，其水溶液稱HCN。HCN屬于劇毒類。檢測管及采樣設備均具有國家計量器具型式批準證書。生產企業通過了ISO9001認證。

廣泛應用：

醫藥科研、制藥生產車間、煙草公司、環境監測、學校科研、樓宇建設、消防報警、污水處理、工業氣體過程控制石油石化、化工廠、冶煉廠、鋼鐵廠、煤炭廠、熱電廠、、鍋爐房、垃圾處理廠、隧道施工、輸油管道、加氣站、地下燃氣管道檢修、室內空氣質量檢測、危險場所安全防護、航空航天、軍用設備監測等。

?在空氣中測定HCN，火災中氣體會釋放出來并且耗盡。
?測量范圍 ：2 到30 ppm
?泵吸次數（n）：1
?測量時間 ：大約1 分鐘
?標準偏差 ：±10…15%
?顏色變化 ：微桔黃色到紅色
?測量范圍延伸：
           5 到75ppm, n=2, 讀數乘以2，5
           10 到150ppm, n=1，讀數乘以5

?周圍的環境：
           溫度 ：0 到30 攝氏度
           濕度 ：≤20mg/L(23 攝氏度相對濕度100%)
           大氣壓力 ：F=1013/大氣壓力（hPa）

?反應原理：

          a）HCN+Hgcl2→Hcl

          b）Hcl+methylred→red reaction product

氰化氫檢測管特點和優勢：

1、氰化氫檢測管是用來測定*氣體在某一環境中所含濃度含量的簡易檢測裝置。通過檢測劑與被檢測氣體的反應而出現顏色變化、來表示所測環境中的氣體含量濃度。具有操作簡便、使用廣泛、檢測精確、實時性強和經濟實惠的特點。

2、德爾格檢測管是兩端密封的玻璃管，在管中內裝填了一定數量的檢測劑，在玻璃管表面標有表示氣體濃度的刻度線。

3、檢測劑是德國德爾格公司專業研發人員經過科學配方研發生產的、計量和實驗驗證后所確定的反應指示劑附著在顆粒體表面。檢測劑一旦和被檢測氣體反應，會出現鮮明且穩定的顏色變化層，通過該變色層與玻璃管上的刻度相對照，就可確定被檢測氣體的精確濃度含量了。

4、檢測管不僅可用于室內空氣檢測、公共場所的空氣質量監測、作業現場的空氣及特定氣體的測試、大氣環境檢測等許多方面，也被用于許多需要控制氣體成分的生產工藝中。檢測管是掌握和分析氣體成分和濃度的有效、安全和簡便的方法。

氣體流向檢測管CH25301操作說明和測量結果：
1、用開管器打開檢測管的兩端
2、將檢測管緊緊地插入泵中。箭頭標記指向泵。
3、用檢測管吸取空氣或氣體樣品
4、讀取變色的整個長度
5、將結果乘以影響因素 F 修正大氣壓力的影響
6、操作后用空氣沖洗泵
7、交叉靈敏度：
• 閱讀100 ppm H2S, 300 ppmNH3, 200 ppm SO2, 50 ppm NO2 ,1000 ppm HCl和1000ppm腈無影響。
• H2S改變預制層到黑褐色。
• 超過300pm濃縮的氨水可能是讀數脫色。
• 磷化氫存在時HCN無法測量。

Highlights/Features

Draeger Tubes used in testing for Cyanide 2/a Draeger Part # 6728791 Measuring Range: 2 - 15 mg/m (10 Tests per Box)

Draeger Tubes used in todays workplace provide quantitative results with a high degree of accuracy, repeatability and selectivity. The printed scale allows technicians to easily view the direct reading of the concentration. Calibration by the user is not necessary. The length-of-stain discoloration does not correspond to the concentration as a direct measure but is a measure of the mass reaction of the air contaminant.

Draeger Tube use is made according to the different areas of application & testing:

· Air investigation in the workplace

· Measurements in the range of the occupational exposure limits

· Technical gas analysis

· Emission concentrations

· Compressed air for breathing apparatus and compressed gases

Draeger tubes are designed for on-the-spot measurements at a particular location over a relatively short time period. Draeger Tube measurements may last from 10 seconds to 15 minutes or so depending on the particular Draeger Tube and Draeger Tube sampling pump. Some applications for short-term tubes are the evaluation of concentration fluctuations in the workplace, the measurement of contaminants in the workers' breathing zone, the investigation of confined spaces (e. g. grain silos, chemical tanks, sewers) prior to entry and to check for gas leaks in process pipelines.

The Draeger Tube measurement system consists of a Drager-Tube and a Drager gas detector tube pump. Each Draeger-Tube contains a very sensitive reagent system that produces accurate readings when the technical characteristic of the gas detector pump precisely match the reaction of the reagent system in the tube. The Draeger Tube Pump delivers the correct volume and must also pull the sample through the Draeger Tube at the proper rate. Basically, the pump and tube form a sampling unit. To interchange the pumps and tubes of various manufacturers can lead to erroneous results.

The evaluation of the indication on the Draeger Tube is another important factor to be taken into consideration. The following are guidelines for interpreting the indication:

· continuously observe the tube during the measurement

· evaluate the indication immediay following the measurement according to the instructions for use

· use sufficient lighting

· a lighter background

· compare with an unused tube

Observing the tube during the measurement is particularly important to make sure that a complete discoloration of the tube has not happened without being realised. This complete discoloration can sometimes occur abruptly with high concentrations even during the course of the first stroke. A sufficient lighting source is necessary. Direct sunlight should be avoided because the UV-radiation of the sun may cause a change in the discoloration. Since such a change can sometimes occur even after a longer period of time. The reading of the tube must be done immediay following the measurement. Please download our guideline sheet for more information.

Please note: The use of other types of pumps with Draeger Tubes is not recommended. Although the volume may be the same, the difference in the flow characteristics of the pump and tube can result in considerable measurement errors.

    德爾格檢測管是裝滿化學試劑的玻璃管，此化學試劑與特定的化學物質或相關化學物質發生反應。用德爾格accuro氣泵抽取定量標準氣樣到檢測管中，如果檢測管中的試劑改變顏色，顏色變化的長度通常表明被測物質的濃度。德爾格檢測管系統是*氣體檢測領域*的、且應用zui廣泛的檢測形式。上海京工實業有限公司常年備庫現貨提供德國德爾格公司專業人員研發生產*的德國德爾格氣體流向檢測管Air Flow Tester。德爾格氣體流向檢測儀和氣體檢測管均通過歐盟認證。用戶廣泛稱之為發煙筆，用途廣泛，性價比好。

2016年上海京工在德國德爾格中國市場上銷量*、服務*、受客戶信譽*稱號！我司銷售的德爾格HCN氣體檢測管價格在中國市場上性價比是zui高的，廣受客戶青睞。咨詢！

上海京工——2017年德爾格授權書