Yokogawa digitalYEWFLO (DY) - Manual (Page 12)

INTRODUCTION
IM 1F2B4-01-YIA
Page 8
STEAM
Nominal Size Flow Rate Minimum Linear and Maximum Measurable Saturated Steam Flow Rates in lb/hr
(inches) Limits at process line pressure
15 psig 25 psig 50 psig 75 psig 100 psig 125 psig 150 psig 175 psig 200 psig 250 psig 300 psig
½ min 12.8 14.6 18.4 21.5 24.1 26.5 28.7 30.7 32.6 36.6 43.4
max 122 161 254 346 437 527 616 705 765 973 1154
1 min 29.7 34 42.8 49.9 56.1 61.6 66.6 71.3 75.7 83.7 91.2
max 379 498 788 1071 1353 1632 1910 2185 2464 3014 357
1½ min 58.7 67.3 84.6 98.6 118 137 156 173 191 224 257
max 905 1188 1879 2554 3228 3894 4557 5215 5879 7192 8530
2 min 97.5 111 140 164 184 202 219 234 248 298 354
max 1500 1969 3113 4232 5349 6452 7550 8639 9740 11916 14133
3 min 188 216 271 316 355 390 422 452 480 576 683
max 2895 3800 6010 8170 10326 12455 14576 16678 18804 23004 27283
4 min 328 376 472 551 659 766 869 967 1065 1251 1434
max 5054 6633 10490 14260 18023 21739 25440 29109 32820 40150 47620
6 min 719 824 1184 1515 1827 2122 2407 2681 2951 3467 3974
max 11065 14523 22969 31224 39463 47600 55705 63739 71864 87914 104270
8 min 1549 1885 2720 3477 4193 4872 5525 6153 6773 7958 9122
max 19785 25968 41070 55830 70561 85111 99603 113968 128496 157194 186439
10 min 2725 3387 4888 6249 7536 8756 9930 11060 12174 14304 16396
max 30596 40157 63509 86334 109114 131614 154024 176238 198703 243081 288305
12 min 3903 4851 7000 8949 10793 12539 14220 15839 17434 20485 23481
max 43816 57590 90952 123640 156263 188485 220578 252392 284564 348119 412883
Table 1.4.3: Steam - Flowmeter Range
Notes: 1) Maximum flowrates are based on 262 ft/sec.
2) These figures are approximations. Refer to the sizing program for the exact minimum and
maximum flowrates for your applications.
Nominal Size Internal Diameter Cross Sectional Nominal Pulse Rate Nominal K-factor
(inches) (inches) Area (ft
2
) (Hz/ft/s) Pulse/US gal Pulse/ft
3
½ 0.57 0.0018 19.1 1423 10645
1 1.01 0.0056 10.8 259 1940
1½ 1.56 0.133 7.05 70.8 530
2 2.01 0.022 5.59 33.9 253
3 2.8 0.043 4.02 12.6 94.3
4 3.69 0.074 3 5.39 40.3
6 5.46 0.163 2.03 1.67 12.5
8 7.31 0.291 1.52 0.7 5.24
10 9.09 0.45 1.23 0.366 2.74
12 10.9 0.645 1.03 0.213 1.59
Table 1.4.4: Nominal K-factor and general flowmeter information