12
U.S. MEASUREMENT
Unit of Measure:
Gallon
TURNDOWN
60:1
ACCURACY
Line Size
Flow Range
(GPM)
ACCURACY
±Uncertainty
Typ.
K-factor
(PPG)
1/2 inch
0.16 to 10 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.023
fps
± .015
gpm
4347
3/4 inch
0.33 to 20 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.012
fps
± .015
gpm
1937
1 inch
0.67 to 40 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.006
fps
± .015
gpm
1089
1 1/2
inch
1.33 to 80 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .015
gpm
484.1
2 inch
2.5 to 150 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .030
gpm
400
3 inch
5 to 300 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .060
gpm
121
4 inch
10 to 600 gpm
(.25 to 15 fps)
± 0.5% of
Reading
± 0.003
fps
± .120
gpm
68.1
FLUID OPERATING
TEMPERATURE:
+32° F to +210° F (NPT & BSPP)
+32° F to +180° F (Polymer and Steel Flanges)
(Do not allow fluid to freeze inside meter.)
STORAGE
TEMPERATURE:
–40° F to +228° F
AMBIENT AIR
OPERATING
TEMPERATURE
0° F to +140° F
ALL METERS
There is a correlation between ambient air temperature
and maximum fluid operating temperature. As ambient
air temperature increases, the maximum fluid operating
temperature decreases. See Maximum Temperature Conditions
graph named “TEMPERATURES” on page 16 to verify that
your process is within allowable meter operating limits.