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Customer Care representatives are available by phone Monday–Friday, from 9am–5pm CST.

(800) 616–3837

Preso®

Preso® Differential Pressure flow meters are precision-engineered to offer exceptional turndown ratios and superior accuracy. Designed to accommodate any manufacturer’s pressure transducer, the Preso family offers a complete line of primary flow elements including Pitot tubes, venturi meters and wedge meters.

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Cone Differential Pressure Flow Meter
Accuracy
±0.5%
±0.5%
Size
12...609 mm
1/2...24 in.
Repeatability
± 0.1% or better
± 0.1% or better
COIN® Wedge, Flange Process by Flange Instrumentation (Model FF) Flow Meter
Size
12...1219 mm
1/2...48 in.
Temperature Range
Up to 815° C
Up to 1500° F
Pressure Range
Dependent on flange rating
Dependent on flange rating
Accuracy
(uncalibrated) ±3% (calibrated) ±0.5%
(uncalibrated) ±3% (calibrated) ±0.5%
Ellipse® AR Annular Flow Meter
Size
50…1820 mm
2...72 in.
Temperature Range
Up to 426° C
Up to 800° F
Flow Range
20…130,000 lpm
5.3...34,340 gpm
Pressure Range
Up to 55 bar
Up to 800 psi
Accuracy
±0.75%
±0.75%
Model LPL Venturi Low Pressure Loss Flow Meter
Size
13...1524 mm
1/2...60 in.
Temperature Range
Up to 815 °C
Up to 1500 °F
Flow Range
0.95...3,122,965 lpm
0.25...825,000 gpm
Pressure Range
Up to 620 bar
Up to 9000 PSI
Accuracy
(uncalibrated) ±3% (calibrated) Up to ±0.5%
(uncalibrated) ±3% (calibrated) Up to ±0.5%
Model SSM Venturi Nozzle Flow Meter
Size
13...1524 mm
1/2...60 in.
Temperature Range
Up to 815 °C
Up to 1500 °F
Flow Range
0.95...3,122,965 lpm
0.25...825,000 gpm
Pressure Range
Up to 620 bar
Up to 9000 PSI
Accuracy
(uncalibrated) ±1% (calibrated) Up to ±0.5%
(uncalibrated) ±1% (calibrated) Up to ±0.5%
Model SSL Venturi Classic Flow Meter
Size
13...1524 mm
1/2...60 in.
Temperature Range
Up to 815° C
Up to 1500° F
Flow Range
0.95...3,122,965 lpm
0.25...825,000 gpm
Pressure Range
Up to 620 bar
Up to 9000 PSI
Accuracy
(uncalibrated) ±0.75% (calibrated) Up to ±0.25%
(uncalibrated) ±0.75% (calibrated) Up to ±0.25%
COIN® Wedge Wafer (Model NW) Flow Meter
Size
13 - 101 mm
1/2" - 4"
Temperature Range
Up to 426°C
Up to 800°F
Pressure Rating
Dependent on flange rating
Dependent on flange rating
Accuracy
(uncalibrated) ± 3% (calibrated) ± 0,5%
(uncalibrated) ± 3% (calibrated) ± 0,5%
COIN® Back-to-Back Wedge (Model NN) Flow Meter
Size
12...152 mm
1/2...6 in.
Temperature Range
Up to 426 °C
Up to 800 °F
Pressure Range
Dependent on flange rating
Dependent on flange rating
Accuracy
(uncalibrated) ±3% (calibrated) ±0.5%
(uncalibrated) ±3% (calibrated) ±0.5%
COIN® Butt Weld Wedge (Model NB) Flow Meter
Size
12...406.4 mm
1/2...16 in.
Temperature Range
Up to 426 °C
Up to 800 °F
Pressure Range
Dependent on flange rating
Dependent on flange rating
Accuracy
(uncalibrated) ±3% (calibrated) ±0.5%
(uncalibrated) ±3% (calibrated) ±0.5%

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Our Technology

Learn about the differential pressure technology behind our Preso meters and how they work.

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(800) 616–3837