Expansion Report(from AGA Report No. 3)

9.7

Copyright Schlumberger 1972revised July 1997

Conditions: Flange taps Downstream pressure connections

Example: Given: Inside diameter of meter tubing D = 4.026 in. Orifice diameter d = 2.125 in. Static pressure Pf = 180 psig Differential pressure hw = 260 in. of water

Find: Expansion factor Solution from chart Y2 = 1.0083

Pf2

Pf2

Y2

300

250

200

75

150

10050

0.5 1 in. 1.5 2 in. 3 in. 4 in.3.5

400360 320260 240 220

200180 60

140

50100

3020

400250200

160 140 120100

9080

400 380360 340

330 320310

400 390 380 370360 350 340

250

330

300 290280

260

70

350

400

450

500400

550

600

300

1.00

1.01

1.02

1.03

A

125

50hw

hw

225

90

7080

60

200175

D=6.065D=5.761

D=4.026D=3.068D=2.067

150125

100

d (in.)

5040

200

hw(in. of water)

Pf2 (psig)

160

2.5

270

25