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首页>产品中心>日本光明北川式气体检测管>气体快速检测管>114溴气体气体检测管 114 BROMINE Br2 1-20ppm

溴气体气体检测管 114 BROMINE Br2 1-20ppm

简要描述:

溴气体气体检测管 114 BROMINE Br2 1-20ppm,在大多数情况下,有限空间工作环境具有以下特征:其体积足以让工作人员进入;仅有有限的出入通道;工人一般不在里面长时间作业等等;典型的有限空间包括水塔、储藏罐、下水道、地下电缆室、大型锅炉、容器、导管等。据科学调查显示,与有限空间有关的事故常常是致命性的,而死亡往往是由于缺乏对有限空间内气体进行监测而引起的。因此,在进入一个有限空间工作环境之前,为了确保工作人员的安全,必须测定里面的气体含量,如氧气、可燃气体和有毒气体的浓度。

更新时间:2017-07-19

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溴气体气体检测管 114 BROMINE Br2 1-20ppm

溴气体气体检测管 114 BROMINE Br2 1-20ppm

Tube No.
1. PERFORMANCE
1) Measuring range :1-20 ppm
Number of pump strokes 1(100ml)
2) Sampling time :2 minutes/1 pump stroke
3) Detectable limit :0.1 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Reading :Concentration chart method
7) Colour change :White→Orange
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:5% RSD-high:5%
3. CHEMICAL REACTION
o-Toluidine is oxidized and Orthoquinone is produced.
4. CALIBRATION OF THE TUBE
COLOURIMETRY METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
114 BROMINE
Substance Interference ppm Coexistence
Nitrogen dioxide FIG.1 Similar stain is produced. Higher readings are given.
Chlorine FIG.2 〃1 〃
Chlorine dioxide FIG.3 〃〃
0
20
10
Nitrogen dioxide〔ppm〕�
FIG.1 Influence of Nitrogen dioxide
Bromine indicating value 〔ppm〕
10 20
Coexistence
Interference
0
20
10
Chlorine〔ppm〕�
FIG.2 Influence of Chlorine
Bromine indicating value 〔ppm〕
10 20
Coexistence
Interference
0
20
10
Chlorine dioxide〔ppm〕�
FIG.3 Influence of Chlorine dioxide Bromine indicating value 〔
ppm〕
10 20
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Chart Correct Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
20 32 24 20 17 14
15 22 18 15 12 10
10 15 13 10 8 6
5 9 7 5 4 3
3 6 4 3 2 1.5
1 3 1.5 1 0.8 0.5
Br2+H2N
CH3 CH3
NH2 BrNH2
CH3 CH3
NH2Br
X
X
0
1
5
10
15
20
3
0
1
5
10
15
20
3
BROMINE�
LENGTH-OF-STAIN�

FOR 1 PUMP STROKE(100mR)�
ppm IN AIR CONCENTRATION
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