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>> 177U水蒸汽H2O氣體檢知管177U WATER VAPOUR 0.05-2.0mg/l
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
水蒸汽H2O氣體檢知管177U WATER VAPOUR 0.05-2.0mg/l
Tube 77U
1. PERFORMANCE
1) Measuring range :0.05-2.0 mg/l
Number of pump strokes 1(100ml)
2) Sampling time :1 minute/1 pump stroke
3) Detectable limit :0.03 mg/l
4) Shelf life :3 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 1 pump stroke
8) Colour change : Yellow→Blue or Yellowish green
2. RELATIVE STANDARD DEVIATION
RSD-low:10% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
By reacting with Magnesium perchlomate, PH indicator is discoloured.
H2O+Mg(CIO4)2→Mg(CIO4)2H2O
4. CALIBRATION OF THE TUBE
DIFFUSION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
1.8
2.0
1.4
1.6
1.2
0.8
1.0
0.4
0.6
0.1
0.05
0.2
mg/l
177U WATER VAPOUR
Substance Interference Coexistence
Alcohols FIG.1 Similar stain is produced. Higher readings are given.
Paraffinic hydrocarbons The accuracy of readings is not The accuracy of readings is not
affected. affected.
0
2.0
Methanol〔ppm〕?
FIG.1 Influence of Methanol
Water vapour indicating value 〔mg/R〕
1500
1.5
500 1000
0.5
1.0
Coexistence
Interference
TEMPERATURE CORRECTION TABLE
Scale True Concentration (mg/r)
Readings
(mg/r) 32°F 41°F 50°F 59°F 68°F 77°F 86°F 95°F 104°F
2.0 3.70 3.06 2.48 2.00 1.60 1.28 0.92 0.66
1.8 4.40 3.26 2.66 2.20 1.80 1.44 1.10 0.82 0.58
1.6 4.00 2.94 2.40 1.95 1.60 1.30 0.98 0.74 0.52
1.4 3.30 2.52 2.08 1.72 1.40 1.15 0.85 0.64 0.44
1.2 2.70 2.06 1.80 1.48 1.20 0.98 0.72 0.54 0.38
1.0 1.92 1.66 1.50 1.24 1.00 0.82 0.60 0.46 0.30
0.8 1.58 1.38 1.24 1.00 0.08 0.66 0.50 0.36 0.25
0.6 1.10 1.02 0.90 0.74 0.60 0.50 0.37 0.26 0.18
0.4 0.72 0.68 0.60 0.50 0.40 0.34 0.25 0.18 0.12
0.2 0.38 0.36 0.32 0.26 0.20 0.18 0.14 0.08 0.06
0.1 0.18 0.17 0.15 0.13 0.10 0.08 0.06 0.50 0.04
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