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                      首頁>產(chǎn)品中心>日本光明北川式氣體檢測管>氣體快速檢測管>187S總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

                      總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

                      簡要描述:

                      187S GENERAL HYDROCARBONS (+) 總烴,50-1400ppm Cyclohexane 環(huán)己烷C6H12 檢測管為什么會有顏色變化?發(fā)生顏色變化的真正原因是檢測管里面的檢測試劑與氣體接觸時,發(fā)生的化學(xué)反應(yīng),從而生成了另外一種不同的物質(zhì)。
                      例如,當二氧化碳檢測管里面的白色試劑接觸到二氧化碳氣體時,發(fā)生變化生成了另外一種紫色的物質(zhì)。當氧氣檢測管里面的黑色試劑與氧氣接觸時,發(fā)生變化生成了另外一種白色的物質(zhì)。

                      更新時間:2025-01-01

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                      總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

                      總烴氣體檢測管187S GENERAL HYDROCARBONS 50-1400ppm

                      Tube No.
                      137
                      1. PERFORMANCE
                      1) Measuring range :50-1,400 ppm(as n-Hexane)
                      Number of pump strokes 1(100ml)
                      2 pump strokes(200ml)are required for Kerosine and Mineral tupentine
                      determination.
                      2) Sampling time :1.5 minutes/1 pump stroke
                      3) Detectable limit :5 ppm
                      4) Shelf life :2 years
                      5) Operating temperature :0~40℃
                      6) Temperature compensation :Necessary(refer to "Table 2. Temperature CorrectionTable")
                      7) Reading :Direct reading from the scale calibrated by 1 pump stroke
                      8) Colour change :Orange→Yellowish green
                      2. RELATIVE STANDARD DEVIATION
                      RSD-low:10% RSD-mid.:5% RSD-high:5%(Controlled on n-Hexane)
                      3. CHEMICAL REACTION
                      Chromium oxide is reduced.
                      CH3(CH2)4CH3+Cr6++H2SO4→Cr3+
                      4. CALIBRATION OF THE TUBE
                      GAS CHROMATOGRAPHY
                      5. INTERFERENCE AND CROSS SENSITIVITY
                      GAS To pump
                      1400
                      1200
                      1000
                      800
                      600
                      400
                      200
                      100
                      50
                      ppm
                      ????
                      187S GENERAL HYDROCARBONS
                      Substance Interference Coexistence
                      The bottom of the discoloured
                      Aromatic hydrocarbons layer is changed to Black and
                      higher readings are given.
                      It has no influence on readings even if Alcohols, Esters or Ketones each co-exists up to 6%.
                      (NOTE)
                      1)Determine the concentration of objective gas by multiplication with the figure shown in Table 1 after
                      temperature correction.
                      Example)For measuring Heptane at 10℃ of temperature
                      Reading concentration :600 ppm
                      Concentration on temperature correction :660 ppm
                      Concentration of Heptane :990 ppm
                      Table.2 Temperature Correction Table (20℃standard)
                      Readings 0℃ 10℃ 20℃ 30℃ 40℃
                      1400 1630 1530 1400 1270 1180
                      1200 1400 1320 1200 1090 1010
                      1000 1170 1100 1000 910 840
                      800 930 870 800 720 670
                      600 700 660 600 550 500
                      400 460 430 400 360 330
                      200 220 210 200 180 170
                      100 100 100 100 100 100
                      Unit:ppm
                      Name of Gas Figure Name of Gas Figure
                      Isobutane 0.8 Heptane 1.5
                      Pentane 0.8 Octane 2.0
                      n-Hexane 1.0 Cyclohexane 1.0
                      Table.1 Coefficient Chart

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