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環(huán)氧氯丙烷OCH2CHCH2Cl氣體檢測(cè)管192S EPICHLOROHYDRIN 5-50ppm,“SEI"認(rèn)證是什么?“安全設(shè)備學(xué)會(huì)Safety Equipment Institute(SEI)"—上Z為嚴(yán)格的認(rèn)證之一,由美國國家標(biāo)準(zhǔn)學(xué)會(huì)和工業(yè)安全設(shè)備聯(lián)合會(huì)American NationalStandardsInstitute/Industrial Safety Equipment Association(ANSI/ISEA)做出。2006年6月,SEI對(duì)21種氣體檢測(cè)管進(jìn)行了認(rèn)證
更新時(shí)間:2025-01-08
在線留言環(huán)氧氯丙烷OCH2CHCH2Cl氣體檢測(cè)管192S EPICHLOROHYDRIN 5-50ppm
Tube 92S
1. PERFORMANCE
1) Measuring range :5-50 ppm
Number of pump strokes 3(300ml)
2) Sampling time :2 minutes/3 pump strokes
3) Detectable limit :1 ppm
4) Shelf life :1 year
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 3 pump strokes
8) Colour change :Greenish yellow→Pink
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By decomposing with an Oxidizer, Hyrogen chloride is produced and PH indicator is discoloured.
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
????????????
GAS ???? To pump
DETECTOR TUBE
(Orange)
PRETREAT TUBE
50
40
30
20
10
5
ppm
300ml
192S EPICHLOROHYDRIN
CH2CHCH2Cl+CrO3+H2SO4→HCl
O
Substance Interference Coexistence
Halogenated hydrocarbons Similar stain is produced. Higher readings are given.
FIG.1
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 5℃ 10℃ 15℃ 20℃ 30℃ 40℃
(ppm) (32°F) (41°F) (50°F) (59°F) (68°F) (86°F) (104°F)
50 - - 70 60 50 42 37
40 - - 57 47 40 34 30
30 - 61 42 35 30 25 23
20 80 39 29 24 20 17 15
10 33 19 15 12 10 9 8
5 15 10 8 6 5 5 4
0
30
40
50
60
20
10
Trichlorocthylene〔ppm〕?
FIG.1 Influence of Trichlorocthylene
Epichlorohydrin indicating value 〔ppm〕
50 100 150 200 250
Coexistence
Interference
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