水蒸汽H2O气体检知管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
所有评论仅代表网友意见,与本站立场无关。