Yokogawa digitalYEWFLO (DY) - Manual (Page 11)

INTRODUCTION
IM 1F2B4-01-YIA
Page 7
1.4 B
ASIC
S
IZING
1.4.1 Flowmeter sizing
Notes: 1) This table assumes standard
conditions of 59ºF (15ºC).
2) Maximum flowrates are based
on 32 ft/sec.
3) These figures are
approximations. Refer to the
Yewflo sizing program for the
exact minimum and maximum
for your application.
4) The values shown in parenthesis
is the minimum linear flowrate.
5) Proper pipe bracing may be
required to obtain minimum
flowrate.
LIQUID
Nominal Size Minimum and Maximum
mm inch Measurable Flow Rates in U.S. gpm
1
15 ½ 1.3 -4.2 and 27
25 1 2 -7.3 and 82
40 1½ 5.9 -11.3 and 196
50 2 9.8 -14.5 and 324
80 3 20 and 628
100 4 33 and 1100
150 6 79 and 2400
200 8 150 and 4290
250 10 265 and 6460
300 12 300 and 9260
Table 1.4.1: Water -Flowmeter Range
GAS
Nominal Size Flow Rate Minimum Linear and Maximum Measurable Air Flow Rates in SCFH
(inches) Limits (Standard conditions are 59ºF and 14.7 psia) at process line pressure
0 psig 50 psig 100 psig 150 psig 200 psig 300 psig 400 psig 500 psig
½ min 172 361 500 719 939 1379 1822 2266
max 1700 7492 13302 19128 24967 36692 48454 60266
1 min 400 839 1118 1486 1940 2851 3765 4683
max 5267 23215 41217 59268 77362 113692 150137 186737
1½ min 792 1919 3037 4061 5026 6838 8970 11157
max 1267 55397 98355 141428 184604 271296 358263 445599
2 min 1313 2756 4080 5867 7658 11254 14862 18485
max 20821 91779 162951 234313 305846 449474 593557 738253
3 min 2534 5321 7877 11326 14784 21726 28691 35685
max 40196 177182 314580 452347 590443 867720 1145876 1425214
4 min 4423 10710 16953 22670 28055 38174 50076 62283
max 70157 309249 549061 789516 1030544 1514497 1999984 2487535
6 min 9685 29678 46977 64927 84749 124548 164473 204567
max 153618 677145 1202247 1728757 2256524 3316208 4379250 5446812
8 min 20851 68121 107827 144185 178437 242799 303286 265774
max 274675 1010761 2149664 3091086 4034753 5929510 7830269 9739113
10 min 37370 122437 193804 259153 320716 436397 545115 649056
max 424752 1872295 3324193 4779987 6239253 9169263 12108556 15060351
12 min 53518 175343 277549 371134 459300 624968 780663 929518
max 608291 2681328 4760604 6845457 8935284 13131375 17340759 21568047
Table 1.4.2: Air-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 application.