174A一氧化氮/二氧化氮NO+NO2气体检测管174A NITROGEN OXIDE/NITROGEN D
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一氧化氮/二氧化氮NO+NO2气体检测管174A NITROGEN OXIDE/NITROGEN DIOXIDE 10-300ppm(NO),1-40ppm(NO2)
Tube 74A
1. PERFORMANCE
1) Measuring range :NO ; 10-300 ppm NO2 ; 1-40 ppm
Number of pump strokes 1(100ml)
2) Sampling time :1.5 minutes/1 pump stroke
3) Detectable limit :NO ; 1 ppm NO2 ; 0.5 ppm
4) Shelf life :2 years
5) Operating temperature :10~30℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Concentration chart method
8) Colour change :NO ; White→Yellowish orange
NO2; White→Pale yellowish orange
2. RELATIVE STANDARD DEVIATION
NO ; RSD-low :10% RSD-mid.:10% RSD-high :10%
NO2 ; RSD-low :10% RSD-mid.:10% RSD-high: 5%
3. CHEMICAL REACTION
NO ; By reacting with an Oxidizer, NO2 is produced.
NO+CrO3+H2SO4→NO2
NO2 ; By reacting with o-Toluidine, Nitroso-o-Toluidine is produced.
4. CALIBRATION OF THE TUBE
NO ; STANDARD GAS CYLINDER METHOD
NO2 ; PERMEATION TUBE METHOD
5. INTERFERENCE AND CROSS SENSITIVITY
GAS To pump
OXYDATION
REAGENT
(RED)
REAGENT FOR NO2 DETECTION
(White)
REAGENT FOR NO DETECTION
(White)
174A,B NITROGEN OXIDE/NITROGEN DIOXIDE
Substance Interference ppm Coexistence
Chlorine Similar stain is produced. 1 Higher readings are given.
(I)NO TEMPERATURE CORRECTION TABLE
Chart NO True Concentration (ppm)
Readings 10℃ 12℃ 14℃ 16℃ 18℃ 20℃ 22℃ 24℃ 26℃ 28℃ 30℃
(ppm) 50°F 53.6°F 57.2°F 60.8°F 64.4°F 68°F 71.6°F 75.2°F 78.8°F 82.4°F 86°F
300 - - - - - 300 270 245 220 200 190
280 - - - - - 280 250 230 210 190 180
260 - - - - 300 260 235 215 195 180 170
240 - - - - 280 240 215 195 180 170 160
220 - - - 300 250 220 195 180 170 160 150
200 - - - 290 230 200 180 165 155 145 140
180 - - 300 250 200 180 165 150 140 135 130
160 - 310 260 215 180 160 150 140 130 125 120
140 310 260 220 185 155 140 130 122 117 113 110
120 260 215 180 155 135 120 112 106 101 98 95
100 210 185 150 130 110 100 95 90 86 83 80
80 160 140 120 100 87 80 77 75 72 71 70
60 100 90 80 70 64 60 57 54 52 51 50
40 60 56 52 48 43 40 38 37 36 35 35
20 30 28 26 24 22 20 20 20 20 20 20
10 10 10 10 10 10 10 10 10 10 10 10
(II)NO2 TEMPERATURE CORRECTION TABLE
Chart NO2 True Concentration (ppm)
Readings 10℃ 12℃ 14℃ 16℃ 18℃ 20℃ 22℃ 24℃ 26℃ 28℃ 30℃
(ppm) 50°F 53.6°F 57.2°F 60.8°F 64.4°F 68°F 71.6°F 75.2°F 78.8°F 82.4°F 86°F
40 - - - - - 40 39 38 37 37 36
38 - - - - 39 38 37 36 35 35 34
36 - - - 38 37 36 35 34 34 33 33
34 - 39 37 36 35 34 33 33 32 32 31
32 39 37 35 34 33 32 31 31 30 30 30
30 36 34 33 32 31 30 30 29 29 28 28
28 33 32 31 30 29 28 28 27 27 26 26
26 31 30 29 28 27 26 26 25 25 25 24
24 28 27 26 25 25 24 24 24 23 23 22
22 26 25 24 23 23 22 22 22 21 21 21
20 24 23 22 21 21 20 20 20 19 19 19
18 21 21 20 19 19 18 18 18 18 17 17
16 19 18 18 17 17 16 16 16 16 16 15
14 17 16 15 15 14 14 14 14 14 14 14
12 14 14 13 13 12 12 12 12 12 12 12
10 12 12 11 11 10 10 10 10 10 10 10
8 10 9 9 8 8 8 8 8 8 8 8
6 7 7 6 6 6 6 6 6 6 6 6
4 4 4 4 4 4 4 4 4 4 4 4
2 2 2 2 2 2 2 2 2 2 2 2
(III)CORRECTION TABLE OF NO2
CONCENTRATION COEXISTING WITH NO
NO2 Actual Concentration (ppm)
20 60 100 150 200 250 300
40 34 33 32 31 30
38 32 31 30 29 28
36 30 29 28 27 26
34 28 27 26 25 24
32 26 25 24 23 22
30 25 24 23 22 21 20
28 23 22 21 20 20 19
26 20 20 20 19 19 18
24 18 18 18 17 17 16
22 16 16 16 15 15 15
20 15 15 15 14 14 14
18 13 13 13 12 12 12
16 12 12 12 11 11 11
14 10 10 10 9 9 9
12 9 9 9 8 8 8
10 8 7 7 7 6 6 6
8 6 5 5 5 5 5 5
6 5 4 4 4 4 4 4
4 3 3 3 3 3 3 3
2 2 2 2 2 2 2 2
NH2
CH3 CH3
NO2+H2N ON=� NO
CH3 CH3
NITROGEN MONOXIDE�
NO ppm
NITROGEN DIOXIDE�
NO2 ppm
X
0
10
40
60
80
100
20
120
140
180
200
250
300
160
X
0
10
40
60
80
100
20
120
140
180
200
250
300
160
X
0
1
4 6 8
10
2
12
16
25
30
35
40
20
X
0
1
4 6 8
10
2
12
16
25
30
35
40
20
Sampling Gas Volum 100mR
NITROGEN OXIDES CONCENTRATION CHART
(Ⅱ)�
(Ⅰ)�
(I)NO Temperature Corrected
Concentration(ppm)
(II)NO2
Temperature
Corrected
Concentration
(ppm)