Omega Products FDT-31 User Manual

TransiT-Time UlTrasonic FlowmeTer

FDT-30 Series

U Compact Enclosure U Large Digital Display U 4 to 20 mA, TTL

and Turbine Simulated Outputs

U Rate and Total Displays U Clean Liquid Compatible

The FDT-30 Series provides easy and low cost installation by clamping to the outside of existing piping systems. Non-invasive transit time system allows solids to pass through the pipe with no affect on the meter. Y-strainers or ﬁltering devices are not needed. Greater accuracy can be attained in applications consisting of entrained gases. The FDT-30 Series will automatically correct displayed ﬂow rates and electronic outputs. Direct interface is provided to data collection systems via 4 to 20 mA output and either TTL-pulse or simulated turbine meter outputs that are proportional to ﬂuid ﬂow rate. Designed to replace mechanical ﬂowmeters in applications where liquid conditions tend to

FDT-31 shown smaller than actual size.

damage or impede mechanical ﬂow meter operation. No maintenance is required. The FDT-30 Series can be used on applications such as well water and other liquids with moderate amounts of suspended solids or aeration.

FDT-30 Series is housed in an enclosure suitable for outdoor mounting. Integral mount transducers are available for pipes 50 mm (2") and smaller.

SPECIFICATION

Liquid Types: Most clean liquids, or

liquids containing moderate amounts of suspended solids

Power: 11 to 30 Vdc @ 0.25 A Velocity: 0.03 to 12.4 MPS

(0.1 to 40 FPS) 4 to 20 mA Output (Standard): 12-bit resolution; source power; 5V max insertion loss; 900 Ω max loop impedance; can share ground common with power supply-isolated from piping system

Turbine Frequency Output (TTL Pulse): Switch selectable;

non-ground referenced AC, ground referenced squarewave; 100 mV pp min/5 Vdc amplitude; 0 to 1 kHz range; 50% ±10% duty cycle

Display: 2 line x 8 character LCD alternates between rate and total in 10 second intervals

Top Row: 18 mm (0.7"), 7-segment Bottom Row: 9 mm (0.35"),

14-segment

Rate: 8 digits max Totalizer: 8 digits max; exponential

multipliers from -1 to +6 Units: Feet, gallons, ft barrels (liquid and oil), acre-feet, lbs, meters, m rates programmable for per: sec, min, hr, or day Operating Ambient: -40 to 85°C (-40 to 185°F) Enclosure: NEMA 3 ABS, PVC and Ultem, brass or SS hardware Dimensions: 75 W x 150 L x 63 mm D (3 x 6 x 2.5") Transducer Type: Clamp-on for pipe mount; time of ﬂight ultrasonic Accuracy: ±1% rdg @ rates > 0.3 MPS (1 FPS); ±0.003 MPS (0.01 FPS) @ rates < 0.3 MPS (1 FPS)

Repeatability: ±0.5% rdg Response Time: 0.3 to 30 sec,

adjustable Protection: Reverse polarity, surge suppression

Pipe Sizes: 12 to 50 mm (0.5 to 2") Pipe Materials: Carbon steel, stainless

steel, copper and plastic

, liters, million-liters, kg;

, million-gal,

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U-Bolt Connections (ANSI & Copper 2" Models)

Standard System

169.2 (6.66)

80.5

(3.17)

65.3

(2.57)

22.2 (0.875) Dia conduit hole

Dimensions: mm (inch)

Pipe Pipe Measuring Size Material A B C D Range

ANSI 62.5 59.9 67.6 21.3 2 to 100 LPM (2.46) (2.36) (2.66) (0.84) 0.5 to 25 GPM

¹⁄₂" Copper 62.5 59.9 84.6 15.9 2 to 100 LPM (2.46) (2.36) (3.33) (0.63) 0.5 to 25 GPM

Tubing 62.5 57.9 94.5 12.7 2 to 100 LPM (2.46) (2.28) (3.72) (0.50) 0.5 to 25 GPM

ANSI 62.5 65.3 67.6 26.7 4 to 200 LPM (2.46) (2.57) (2.66) (1.05) 1 to 55 GPM

³⁄₄" Copper 62.5 63.5 90.4 22.2 4 to 200 LPM (2.46) (2.50) (3.56) (0.88) 1 to 55 GPM

Tubing 62.5 57.9 94.5 12.7 4 to 100 LPM (2.46) (2.50) (3.56) (0.75) 1 to 55 GPM

ANSI 62.5 74.2 72.6 33.4 8 to 375 LPM (2.46) (2.92) (2.86) (1.32) 2 to 100 GPM

1" Copper 62.5 72.9 96.5 28.6 8 to 375 LPM (2.46) (2.87) (3.80) (1.13) 2 to 100 GPM

Tubing 62.5 69.9 96.5 25.4 8 to 375 LPM (2.46) (2.75) (3.80) (1.00) 2 to 100 GPM

ANSI 71.0 80.8 79.8 42.2 15 to 570 LPM (2.80) (3.18) (3.14) (1.66) 4 to 150 GPM

1¹⁄₄" Copper 62.5 76.2 102.6 34.9 15 to 570 LPM (2.46) (3.00) (4.04) (1.38) 4 to 150 GPM

Tubing 62.5 76.2 102.6 31.8 15 to 570 LPM (2.46) (3.00) (4.04) (1.25) 4 to 150 GPM

ANSI 76.7 86.9 84.6 48.3 18 to 830 LPM (3.02) (3.42) (3.33) (1.90) 5 to 220 GPM

1¹⁄₂" Copper 68.8 72.6 108.7 41.3 18 to 830 LPM

(2.71) (2.86) (4.28) (1.63) 5 to 220 GPM Tubing 68.8 84.1 108.7 38.1 18 to 830 LPM

(2.71) (3.31) (4.28) (1.50) 5 to 220 GPM ANSI 94.0 86.9* 139.7 60.3* 30 to 1500 LPM

(3.70) (3.42) (5.50) (2.375) 8 to 400 GPM 2" Copper 94.0 85.9* 139.7 54.0* 30 to 1500 LPM

(3.70) (3.38) (5.50) (2.125) 8 to 400 GPM Tubing 81.5 98.0 120.7 50.8 30 to 1500 LPM

(3.21) (3.85) (4.75) (2.00) 8 to 400 GPM

Varies due to U-bolt configuration

To Order Visit omega.com/fdt-30_series for Pricing and Details

Model No. Description Range LPM (GPM)

FDT-31 Transit-time ultrasonic flowmeter, ¹⁄₂" ANSI pipe 2 to 100 (0.5 to 25) FDT-32 Transit-time ultrasonic flowmeter, ³⁄₄" ANSI pipe 4 to 200 (1 to 55) FDT-33 Transit-time ultrasonic flowmeter, 1" ANSI pipe 8 to 375 (2 to 100) FDT-34 Transit-time ultrasonic flowmeter, 1¹⁄₄" ANSI pipe 15 to 570 (4 to 150) FDT-35 Transit-time ultrasonic flowmeter, 1¹⁄₂" ANSI pipe 18 to 830 (5 to 220) FDT-36 Transit-time ultrasonic flowmeter, 2" ANSI pipe 30 to 1500 (8 to 400)

Accessories

Model No. Description

FDT-GREASE Coupling grease for FDT-30/80 series

Comes complete with operator’s manual and coupling grease. For copper pipe applications, add suffix “-C” to model number, no additional charge.

For plastic tubing applications, add suffix “-T” to model number, no additional charge.

Ordering Examples: FDT-32, transit-time ultrasonic flowmeter for FDT-33-C, transit-time ultrasonic flowmeter for 1" copper pipe, FDT-GREASE, coupling grease.

⁄4" ANSI pipe.

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