C6H5CH=CH2气体检知管158SB STYRENE 1-100ppm
Tube No.158SB
1. PERFORMANCE
1) Measuring range ：2-100 ppm 1-50 ppm
Number of pump strokes 2(200mL) 4(400mL)
2) Sampling time ：1 minute / 1 pump stroke
3) Detectable limit ：0.2 ppm(400mL)
4) Shelf life ：3 years
5) Operating temperature ：0～40℃
7) Reading ：Direct reading from the scale calibrated by 2 pump strokes
8) Colour change ：White→Yellow
2. RELATIVE STANDARD DEVIATION
RSD-low ： 5 ％ RSD-mid.： 5 ％ RSD-high : ％
3. CHEMICAL REACTION
A polymer of Styrene is produced by fume sulphuric acid.
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
158SB STYRENE
Substance ppm Interference Coexistence
Acrylonitrile The accuracy of readings is
not affected.
Lower readings are given.
Butadiene 5
Formaldehyde
Pale orange stain is produced.
Acetaldehyde
Higher readings are given.
Methyl alcohol The accuracy of readings is
not affected.
Ethyl alcohol 〃
Ethyl acetate 〃〃
Butyl acetate 〃〃
(NOTE )
In case of 2 pump strokes, following formula is available for actual concentration.
Actual concentration ＝ 1 / 2×Reading value.
C C H – C H 2 C H 2
H 2SO 4
400
15
350
3500
1800
700
700
The accuracy of readings is
not affected.
Orange stain is produced.
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GAS To pump
DEHUMIDIFIER TUBE DETECTOR TUBE
(White)
TEMPERATURE CORRECTION COEFFICIENT TABLE
Temperature
0℃
10℃ (50°)
20℃ (68°)
30℃ (86°)
40℃ (104°)
0
0.80
0.90
1.00
1.10
1.20
1
0.81
0.91
1.01
1.11
6
0.86
0.96
1.06
1.16
5
0.85
0.95
1.05
1.15
4
0.84
0.94
1.04
1.14
3
0.83
0.93
1.03
1.13
2
0.82
0.92
1.02
1.12
7
0.87
0.97
1.07
1.17
8
0.88
0.98
1.08
1.18
9
0.89
0.99
1.09
1.19
