
	Part Number All Omega search item

Ultrasonic Doppler Flowmeter

FD-400 Series

Ultrasonic Doppler Flowmeter

Click for larger image.

•	Non-Intrusive, Clamp-On Transducer for Most Pipes from 6 to 3050 mm (1.3 to 120")
•	Insertion Probe Transducer Also Available
•	Wide Measuring Range of 0.05 to 9 mps (0.15 to 30 fps)
•	Accuracy: ±2% of Calibrated Span
•	Configuration and Total Stored in Non-Volatile Flash ROM
•	NEMA 4X (IP66) Outdoor Enclosure
•	Provisions for Up to 4 Meters in a Single Piping System
•	NIST Certificate
View related products - Ultrasonic/Doppler Flowmeters

The FD-400 Series ultrasonic doppler flowmeters measure the flow of liquids that contain sound reflectors, suspended solids, or gas bubbles larger than 100 microns. These sophisticated instruments automatically adjust filtering and gain settings to produce reliable readings in a wide range of liquid and reflector conditions.

The FD-400 flowmeter transmitts ultrasonic sound through the pipe wall or from the probe tip into the flowing liquid by using piezoelectric crystals contained in the transducer and probe tip. The sound is then reflected by sonic reflectors suspended in the liquid and recorded by the receiver. If the sonic reflectors are moving within the sound transmission path, sound waves will be reflected at a frequency shifted (Doppler frequency) from the transmitted frequency. The difference between the 2 frequencies is directly proportional to the speed of the sonic reflectors, resulting in a liquid flow rate that is converted to various user-defined units.

Configuration of the FD-400 is accomplished via the front-panel keypad. A 2-line backlit LCD displays rate and total in user-selected units. Power supply options include AC and DC. Optional outputs include 4 to 20 mA, relays, and rate pulse.

Two transducer styles are available. The FD-400C clamp-on, non-intrusive transducer is recommended for most metal or plastic pipes. The FD-400C has a NEMA 6P (IP68) rating and is available in a high-temperature version, “HT”. The user can place these clamp-on transducers up to 305 m (1000') from the display enclosure. The FD-400I insertion probe transducer should be used on piping systems that do not permit ultrasonic penetration. The FD-400I inserts into the pipe wall and comes into direct contact with the flowing liquid.

SPECIFICATIONS GENERAL
Measuring Principle: Doppler ultrasonic
Flow Velocity Range: 0.05 to 9 mps (0.15 to 30 fps)
Accuracy: ±2% FS over calibrated span
Liquid Types: Liquids containing 100 ppm of useful sonic-suspended reflectors greater than 100 microns (see page E-4 for details)

MONITOR
Enclosure: NEMA 4X (IP66), polycarbonate, stainless steel, brass, plated-steel mounting brackets
Dimensions: 178 H x 146 W x 99 mm D (7.00 x 5.75 x 3.88")
Power Supply: 115/230 Vac, 50/60 Hz ±15% @ 5 VA max; 12 to 28 Vdc @ 2.5 VA max
Display: 2-line x 8-character LCD; LED backlighting; top row, 7-segment 18 mm (0.7"); bottom row, 14-segment 9 mm (0.35"); 8-digit rate, 8-digit total (resettable)
Units: User configured—feet, gallons, ft³, mil-gal, meters, liters, mil ft³, m³, mil-liters, acre-feet, oil barrels (42 gallon), liquor barrels (32.5 gallons), lb, kg
Rate: Interval—second, minute, hour, day
Totalizer exponent: E^-2 to E⁺⁶
Response Time: User selectable, 1 to 60 seconds
Outputs: 4 to 20 mA, 800 Ω max; internal or external power supply; 12-bit resolution; optically isolated
Dual Relay: Independently configured; form “C”, 200 Vac @ 0.5 A resistive; rate alarm, totalizer pulse, error
Rate Pulse: 2 output types— 500 mVac or open collector; 2500 Hz max; 12-bit resolution; 500 mV AC into 2 kΩ min; open collector 1 A at 100 V max
Multiple Meters: Synchronization provision included—used for multiple meter/single pipe system; up to 4 meters may be interconnected to 30 m (100') apart
Keypad: 4 pushbutton keys
Operating Temperature: General purpose, 40 to 85°C (40 to 185°F)

TRANSDUCERS
Type: Compression-mode ultrasonic, 625 kHz
Housing Material:
    Standard Clamp-On: NEMA 6P (IP68), -40 to 100°C (-40 to 210°F), CPVC, Ultem®, nylon, PVC (cable jacket), aluminum (small pipe)
    High-Temp Clamp-On: NEMA 4 (IP65), -40 to 200°C (-40 to 400°F), Vespel®, anodized aluminum, nickel-plated brass, PFA (cable jacket)
    Doppler Probe: NEMA 6 (IP67) -40 to 100°C (-40 to 210°F); 700 psi (48 bar) max, 316 SS, Ultem®, FKM, nylon, PVC (cable jacket)
    Optional Flexible Armored Conduit: Zinc-plated steel, PVC
Cable Length:
    Standard Lengths: 6 m (20') standard

To Order (Specify Model Number)

Part Number	Availability	Price	Description	Qty.

FD-400		$1,695.00	Ultrasonic rate and totalizer	qty.
FD-410		$1,940.00	Rate and totalizer with 4 to 20 mA output	qty.
FD-411		$2,185.00	Rate and totalizer with two 4 to 20 mA outputs	qty.
FD-412		$2,185.00	Rate and totalizer with 4 to 20 mA and 2 relay outputs	qty.
FD-413		$2,185.00	Rate and totalizer with 4 to 20 mA and pulse outputs	qty.
FD-420		$1,940.00	Rate and totalizer with 2 relay outputs	qty.
FD-423		$2,185.00	Rate and totalizer with 2 relays and a pulse output	qty.
FD-430		$1,940.00	Rate and totalizer with pulse output	qty.
FD-433		$2,185.00	Rate and totalizer with 2 pulse outputs	qty.
FD-GREASE		$5.00	Replacement acoustic grease for sensor mounting	qty.

Clamp-On Transducers and Accessories

FD-400C-STD		$970.00	Standard-size clamp-on transducer set, 25 to 3050 mm (1 to 120")	qty.
FD-400C-SML		$1,300.00	Small-pipe clamp-on transducer set, 6 to 25 mm (1.4 to 1")	qty.
FD-400C-STD-HT		$1,555.00	Standard-size clamp-on transducer set for high temperature, 25 to 3050 mm (1 to 120")	qty.

Insertion-Style Transducers and Accessories

FD-400I-8		$1,155.00	Insertion transducer sensor 8"	qty.
FD-400I-18		$1,435.00	Insertion transducer sensor 18"	qty.
FD-400I-18-50 FT		$1,520.00	Insertion Transducer sensor 18" with 50 feet of cable	qty.
FD-400I-28		$1,670.00	Insertion transducer sensor 28"	qty.
FD-400I-38		$1,915.00	Insertion transducer sensor 38"	qty.
FD-400I-48		$2,100.00	Insertion transducer sensor 48"	qty.
FD-400I-CR-18		$1,285.00	Insertion crank for FD-400I-18	qty.
FD-400I-CR-28		$1,295.00	Insertion crank for FD-400I-28	qty.
FD-400I-CR-38		$1,310.00	Insertion crank for FD-400I-38	qty.
FD-400I-CR-48		$1,325.00	Insertion crank for FD-400I-48	qty.
FD-400I-BV		$185.00	Bronze valve isolation kit 11.2 NPT	qty.
FD-400I-SFK		$105.00	Probe insertion fitting seal kit	qty.
FD-400I-SSV		$305.00	Stainless steel valve isolation kit 11. NPT	qty.

† All dollar amounts on this site are shown in US currency.

Note: FD-400 Series meters come with NIST Cert, wall mount bracket, and operator's manual.
FD-400C-STD sensors come with four mounting straps.
Ordering Example: (1) FD-400 Ultrasonic rate and totalizer , (1) FD-400C-STD Standard-size clamp-on transducer set, 25 to 3050 mm (1 to 120") = $2,665.00

Keywords.:flow transducer, ultrasonic, ultrasonic flow meter