Measuring Ranges
Saturated Steam
Example of Calculation
To determine:
Measuring range for saturated steam
with a nominal diameter DN 100 at an
operating pressure of 12 bar abs. and
140 bar abs.
Calculation:
Min. and max. values for the measuring
range can be found from the following
table:
at 12 bar abs. ⇒ 395...12227 kg/h
at 140 bar abs. ⇒ 2642...78911 kg/h
Supplementary information from table:
•
Saturated steam temp. =
188 °C (at 12 bar); 337 °C (at 140 bar)
•
Density = 6.13 kg/m
3
(at 12 bar)
87.0 kg/m
3
(at 140 bar)
Operating
pressure
[bar abs.]
Measuring ranges for various nominal widths in [kg/h]*
DN 15
min...max
DN 25
min...max
DN 40
min...max
DN 50
min...max
DN 80
min...max
DN 100
min...max
DN 150
min...max
DN 200
min...max
DN 250
min...max
DN 300
min...max
T
sat
°C
ρ
sat
kg/m
3
0.5
2.5...7.7 5.6...38.6 13.7...95.0 22.8...158 51.2...355 88.7...616 202...1401 396...2753 632...4390 893...6205 81.3 0.31
1
3.4...14.7 7.7...73.9 18.9...182 31.6...303 70.8...680 123...1178 279...2680 548...5267 874...8399 1236...11870 99.6 0.59
1.5
4.2...21.5 9.3...108 22.9...266 38.1...443 85.6...994 148...1722 337...3916 663...7697 1057...12274 1494...17346 111 0.86
2
4.8...28.1 10.6...141 26.2...348 43.6...580 97.9...1301 170...2254 386...5126 758...10075 1209...16066 1709...22706 120 1.13
3
5.8...41.1 12.9...207 31.6...508 52.8...848 118...1902 205...3295 467...7496 917...14732 1462...23492 2067...33200 134 1.65
4
6.6...53.9 14.7...271 36.2...666 60.4...1111 136...2492 235...4317 534...9820 1050...19300 1674...30777 2366...43495 144 2.16
5
7.3...66.5 16.4...334 40.2...822 67.1...1370 151...3074 261...5326 593...12115 1166...23810 1859...37968 2628...53659 152 2.67
6
8.0...78.9 17.8...397 43.8...976 73.1...1627 164..3651 284...6325 646...14388 1271...28278 2026...45094 2863...63729 159 3.17
7
8.6...91.3 19.2...459 47.2...1129 78.6...1883 176...4224 306...7318 695...16646 1367...32716 2179...52170 3080...73730 165 3.97
8
9.1...104 20.4...521 50.2...1281 83.8...2137 188...4794 326...8305 741...18893 1456...37131 2322...59211 3281...83680 170 4.16
10
10.2...128 22.7...645 55.9...1584 93.2...2642 209...5929 326...10270 824...23362 1619...45915 2582...73219 3649...103000 180 5.15
12
11.1...153 24.8...767 61...1886 102...3146 228...7058 395...12227 899...27813 1767...54663 2817...87169 3981...123000 188 6.13
15
12.3...189 27.6...951 67.9...2338 113...3899 254...8749 440...15156 1001...34477 1967...67760 3136...108000 4433...153000 198 7.6
25
15.8...312 38.5...1567 94.6...3853 158...6425 354...14416 613...24972 1395...56807 2742...112000 4372...178000 6179...252000 224 12.5
30
17.6...382 44.1...1880 108...4621 170...7242 406...17290 703...30135 1523...64909 234 15
35
19.2...446 49.6...2196 122...5399 191...8462 456...20200 795...35209 1712...75837 243 17.5
40
21.3...511 54.9...2365 135...5815 212...9115 505...21759 880...37926 1896...81689 250 20.1
45
23.3...578 60.2...2514 148...6181 232...9688 553...23128 965...40311 2078...86826 257 22.7
50
25.4...645 65.4...2657 161...6532 252...10238 601...24442 1048...42602 2257...91760 264 25.4
64
31.0...842 79.8...3035 196...7460 307...11693 734...27914 1279...48653 2755...105000 280 33.1
80
37.4...1082 96.3...3440 237...8457 371...13255 886...31643 1544...55154 3325...119000 295 42.5
100
45.6...130.4 118...3928 289...9657 453...15137 1081...36135 1884...62982 4058...136000 311 55.4
120
54.3...1466 140...4415 344...10854 540...17013 1288...40613 2245...70788 4835...152000 325 70
140
63.9...1634 165...4922 405...12099 635...18965 1516...45274 2642...78911 5691...170000 337 87
160
74.9...1816 193...5470 475...13447 744...21078 1776...50318 3096...87704 6668...189000 347 108
180
87.7...2016 226...6075 556...14934 871...23408 2079...55881 3623...97400 7804...210000 357 133
200
102...2235 264...6734 648...16555 1061...25948 2426...61944 4229...108000 9108...233000 366 163
220
119...2465 305...7427 751...18259 1177...28619 2810...68321 4898...119000 10550...256000 374 198
* This table is given as guideline for measuring ranges of Prowirl 70 F (flanged),
and Prowirl 70 H (high pressure).
Measuring range for the standard Prowirl H
high-pressure version
10
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