當前位置:上海境宣實業有限公司>>日本光明北川式氣體檢測管>>氣體快速檢測管>> 190U四氫萘C10H12氣體檢測管190U Dicyclopentadiene 2-60ppm
室內空氣甲醛檢測管No.713 FORMALDEHYDE 0.01-0
氯乙烯CH2=CHCl氣體測毒管132SC VINYL CHLORID
氯乙烯CH2=CHCl氣體檢知管132SB VINYL CHLORID
四氫萘C10H12氣體檢測管190U Dicyclopentadiene 2-60ppm
Tube 90U
1. PERFORMANCE
1) Measuring range :2-60 ppm
Number of pump strokes 3(300 ml)
2) Sampling time :4.5 minutes / 3 pump strokes
3) Detectable limit :0.5 ppm
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Graduations printed on the tube are calibrated by Ethyl cellosolve at 3 pump
strokes and Furfural concentration is determined by using a conversion chart.
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH=CH
O +H2SO4+Cr6+→Cr3+
CH=C-CHO
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
500
400
300
200
150
100
50
20
5
ppm
(White)
DEHUMIDIFIER
190U C FURFURAL
Substance ppm Interference Coexistence
Alcohols Similar stains are produced and higher
readings are given.
Toluene 200 Whole reagent is changed to Pale orange. Unclear stains are produced.
TEMPERATURE CORRECTION TABLE
Conver. Corrected Concentration (ppm)
value 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
60 - - 60 50 45
50 - 71 50 45 40
40 - 53 40 35 35
30 63 35 30 30 30
20 25 22 20 20 20
15 17 15 15 15 15
10 10 10 10 10 10
5 5 5 5 5 5
2 2 2 2 2 2
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