Dwyer EFF User Manual
F-PWF/EFF
Technical Bulletin
K-Factors for Series
PWF & EFF
GENERAL INFORMATION
The accuracy of Dwyer Instruments Inc. ow meters depends
on the accuracy of the K-factor for each meter tting or
spool piece. Tee ttings and spool-type meters are wetcalibrated in the factory before shipping to the customer,
and the K-factor appears on a label on each individual tting
or meter. Saddle and weldolet ttings cannot be factorycalibrated because the K-factor will vary depending on the
type of pipe on which the meter is installed.
KFACTORS FOR SADDLE AND WELDOLET FITTINGS
SERIES PWF FOR SERIES PDWS
3" 4" 6" 8"
PVC/Steel
Sch. 40
PVC/Steel
Sch. 80
28.92
32.368
16.790
18.591
7.412
8.215
SADDLE AND WELDOLET FITTINGS
The charts below give K-factors for Series EFS2
(Electromagnetic) and Series PDWS (Paddle wheel) meters
installed in saddle or weldolet ttings on various pipes. On
the chart that corresponds to your meter type, locate your
pipe size and type. Enter the corresponding K-factor into
your controller.
SERIES EFF FOR SERIES EFS2
3" 4" 6" 8" 10"
4.275
4.684
70.397
78.748
40.985
45.360
18.130
20.084
10.497
11.495
6.674
7.322
Stainless
Steel (10S)
Stainless
25.614
28.920
14.996
16.790
6.747
7.412
3.926
4.275
62.385
70.397
36.626
40.985
16.510
18.130
9.642
10.497
6.173
6.674
Steel (40S)
Copper Tubing
31.386
17.847
7.981
4.563
76.371
43.552
19.513
11.201
7.230
(Type L)
Copper Tubing
32.212
18.294
8.272
4.736
78.371
44.638
20.223
11.622
7.500
(Type K)
Brass Pipe
Duct. Iron
29.033
23.548
17.009
15.282
7.268
6.913
4.254
3.485
70.672
57.376
41.517
37.320
17.778
16.915
10.445
9.503
6.674
6.197
(Class 52)
NOTE: These K-factors are in Pulses Per Gallon. To convert to Pulses Per Liter, divide by 3.785.
.
Dwyer Instruments, Inc. • 102 Indiana Highway 212 • Michigan City, IN 46360 • USA
(P) 219.879.8868 • (F) 219.872.9057 • 1.800.872.9141 • www.dwyer-inst.com
Loading...