硫化氫檢測管
德國德爾格硫化氫檢測管測定時(shí),把檢測管放置于有硫化氫氣體的環(huán)境中,硫化氫通過檢測管端口擴(kuò)散進(jìn)入管內(nèi),在經(jīng)過惰性載體時(shí),與惰性載體上的顯色劑發(fā)生反應(yīng),從而產(chǎn)生明顯的顏色變化。檢氣管顯色長度的平方與硫化氫濃度及采樣時(shí)間的乘積在一定范圍內(nèi)成線性關(guān)系,從而求出環(huán)境中硫化氫的時(shí)間加權(quán)平均濃度。 德國德爾格Drager檢測管具有快速測出硫化氫濃度的優(yōu)點(diǎn),具有現(xiàn)場采樣,現(xiàn)場檢測,現(xiàn)場指導(dǎo)工作的優(yōu)勢(shì)。在一般情況下,溫度、濕度、風(fēng)速等對(duì)測定無明顯影響,該檢氣管適用于工廠、車間、下水道等廢氣中硫化氫的檢測。檢氣管的亞硝與硫化氫是*反應(yīng),其抗干擾能力較強(qiáng)。檢測管在避光條件下保存,有效期至少為一個(gè)月。且靈敏度高,成本低。它適用于各種燒煤或耗汽油的工廠、車間或機(jī)動(dòng)車輛等排放氣中的有毒氣體H2S的定性和定量的測定,而且可以大面的積布點(diǎn)測定,如石油井周圍環(huán)境H2S含量的測定,確定是否需要疏散人群,以確保人民的生命安全。在穩(wěn)定性方面,經(jīng)過試驗(yàn),經(jīng)密封的檢氣管可至少可保存一個(gè)月質(zhì)量不變,一般情況下,溫度、濕度和風(fēng)速等對(duì)測定無明顯影響,且該檢測管有一定的抗干擾能力強(qiáng)。
近年來,有毒有害氣體的泄露、爆炸等事故時(shí)有發(fā)生,不僅威脅著工作人員的人身安全,還造成環(huán)境污染。有毒有害氣體(硫化氫、氨氣、氯氣)的來源以及危害,德爾格硫化氫氣體檢測管可以分析各種有毒有害氣體的濃度含量。經(jīng)德國德爾格公司專業(yè)人士研究出針對(duì)各氣樣的氣體檢測管。提高了檢測管靈敏度,德爾格檢測管具有簡便、快捷、采樣體積小、響應(yīng)時(shí)間短、便于攜帶和靈敏度高的優(yōu)點(diǎn),是一種定性和半定量的檢測方法。硫化氫氣體檢測管對(duì)樣品氣樣為50 mL的氣體的檢出限為30 mg·m-3,響應(yīng)時(shí)間小于10 min。氨氣氣體檢測管對(duì)樣品氣樣為50 mL的氣體的檢出限為15 mg·m-3,響應(yīng)時(shí)間小于5 min。氯氣氣體檢測管對(duì)樣品氣樣為50 mL的氣體的檢出限為4 mg·m-3,響應(yīng)時(shí)間小于10 min。測氣樣后有明顯的顏色變化,且兩者之間不發(fā)生化學(xué)反應(yīng),選取合適的干燥條件,指示劑的濕潤程度,對(duì)檢測結(jié)果有著重要的影響。
一、H2S氣體檢測管產(chǎn)品用途:
主要用于煤炭,石化、電力、環(huán)保等工礦企業(yè)工作環(huán)境中硫化氫氣體濃度的快速測定。它具有儀器簡單,操作容易,攜帶方便,分析速度快的優(yōu)點(diǎn)。
●應(yīng)用范圍:
檢測空氣和氣體中的硫化氫含量。
測量范圍:1 到20ppm
測試氣體體積:1L
測量時(shí)間: 5 分鐘
標(biāo)準(zhǔn)誤差:±15%
結(jié)果: 讀取n=10 次對(duì)應(yīng)刻度的ppmH2S 濃度值
顏色變化:白色→褐色
●周圍環(huán)境:
溫度 :2℃到40℃
濕度 :≤40mg/L(35℃時(shí)相當(dāng)于100%r.h.)
二、硫化氫便攜式檢測管使用方法:
先將檢測管上端切開,再將下端切開。根據(jù)檢測管的型號(hào)。用檢定器抽取相應(yīng)量的氣體,用短膠管迅速與檢測管下端連接,在規(guī)定時(shí)間內(nèi)使氣體勻速通過檢測管,此時(shí)被測氣體中H2S與指示粉反應(yīng),產(chǎn)生褐色變色環(huán),由變色環(huán)上端所指示高度,可直接從檢測管上讀出H2S的含量。
三、德爾格檢測管注意事項(xiàng):
1、使用者必須是經(jīng)過正規(guī)培訓(xùn)的專業(yè)檢測人員。
2、檢測管應(yīng)貯存在常溫,干燥的室內(nèi),嚴(yán)防日光照射。搬運(yùn),使用時(shí)應(yīng)避免碰撞,摔砸。
3、檢定器必須定期檢驗(yàn),以確保測量結(jié)果的準(zhǔn)確性。采樣量與進(jìn)氣速度必須與檢測管型號(hào)相匹配。
4、檢測管出現(xiàn)裂隙或斷尖等現(xiàn)象
5、避免皮膚接觸管內(nèi)填充物,因?yàn)樗哂懈g性
Highlights/Features
Draeger Tubes used in testing for Hydrogen Sulfide 0.5/a Draeger Part # 6728041 Measuring Range: 0.5 - 15 ppm (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.
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四、產(chǎn)品訂貨信息:
檢測管名稱 | 測量范圍 | 訂貨號(hào) |
硫化氫 H2S 0.2/a | 0.2-5 ppm | 8101461 |
硫化氫 H2S 0.2/b | 0.2-6 ppm | 8101991 |
硫化氫 H2S 0.5/a | 0.5-15 ppm | 6728041 |
硫化氫 H2S 1/c | 1-200 ppm | 6719001 |
硫化氫 H2S 1/d | 1-200 ppm | 8101831 |
硫化氫 H2S 2/a | 2-200 ppm | 6728821 |
硫化氫 H2S 2/b | 1-60 ppm | 8101961 |
硫化氫 H2S 5/b | 5-60 ppm | CH29801 |
硫化氫 H2S 100/a | 100-2,000 ppm | CH29101 |
硫化氫 H2S 0.2%/A | 0.2-7 Vol.% | CH28101 |
硫化氫 H2S 0.2%/a | 2-40 Vol.% | 8101211 |
硫化氫+ 二氧化硫 H2S+SO2 0.2%/A | 0.2-7 Vol.% | CH28201 |