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Clamp-On Transit Time Ultrasonic Flow Meter

Clamp-On Ultrasonic Flow for Liquids

Item# FDT-40

Clamp-On Ultrasonic Flow for Liquids FDT-40 FDT-40
  • Discontinued. Replaced by UFM-DQG-Series
  • Bi-Directional Flow Measurement
  • Rugged, Aluminum Enclosure
  • Rate and Total Backlit Display
  • 4 to 20 mA and Dual Alarm Outputs
  • USB Programming Port
  • RS485 MODBUS® Network Connection


FDT-40 Series ultrasonic flow and energy meters clamp on to the outside of pipes and do not come in contact with the internal liquid. The technology has inherent advantages over alternate devices including: low-cost installation, no pressure head loss, no moving parts to maintain or replace, no fluid compatibility issue, and a large, bi-directional measuring range that ensures reliable readings even at very low and high flow rates. FDT-40 Series is available in a variety of configurations that permit the user to select a meter with features suitable to meet particular application requirements.

Specifications
System
Liquid Types: Most clean liquids or liquids containing small amounts of suspended solids or gas bubbles
Velocity Range: Bi-directional to greater than 40 FPS (12 MPS)
Flow Accuracy:
    Larger Than 50 mm (2"): ±1% of reading or ±0.01 FPS (0.003 MPS), whichever is greater
    25 to 50 mm (1 to 2"): ±1% of reading or ±0.04 FPS (0.012 MPS), whichever is greater
¾" (19 mm) and Smaller: ±1% of full scale
Sensitivity Flow: 0.001 FPS (0.0003 MPS)
Repeatability: 0.5% of reading
Transmitter
Power Requirements (AC): 95 to 264 Vac 47 to 63 Hz @ 17 VA maximum standard, 20 to 28 Vac 47 to 63 Hz @ 0.35 A maximum (“-24VAC” models), 10 to 28 Vdc @ 5 W maximum (“-VDC” models)
Protection: Auto resettable fuse, reverse polarity and transient suppression
Display: Two line LCD, LED backlit; top row 18 mm (0.7") height, 7-segment; bottom row 9 mm (0.35") height, 14-segment
Icons: RUN, PROGRAM, RELAY1, RELAY2
Flow Rate Indication: 8-digit positive, 7-digit negative maximum; auto decimal, lead zero blanking
Flow Totalizer: 8-digit positive, 7-digit negative maximum (re-set via keypad press, software, network command or momentary contact closure
Enclosure NEMA 4 (IP65) Construction: Powder-coated aluminum, polycarbonate, stainless steel, polyurethane, nickel-plated steel mounting brackets
Size (Electronic Enclosure Only): 152 W x 112 H x 56 mm D (6.0 x 4.4 x 2.2")
Conduit Holes: (2) ½ NPT female (1) ¾ NPT female
Temperature: -40 to 85°C (-40 to 185°F)
Configuration: Via optional keypad or PC running software (Note: not all configuration parameters are available from the keypad – i.e. flow and temperature calibration and advanced filter settings)
Engineering Units Flow Meter: Feet, gallons, cubic feet, million gallons, barrels (liquid and oil), acre-feet, lbs, meters, cubic meters, liters, million liters, kg
Inputs/Outputs USB 2.0: For connection of a PC running configuration utility
    RS485: MODBUS RTU command set
    4 to 20 mA: 12-bit, internal power, can span negative to positive flow/ energy rates
    0 to 1000 Hz: Open-collector, 12-bit, can span negative to positive rates; square-wave or turbine meter simulation outputs
Two Alarm Outputs: Open-collector, configure as rate alarm, signal strength alarm or totalizer pulse
Transducers
Construction
    Standard (FDT-41 thru 46): NEMA 6 (IP67), PVC, PEI, Nylon cord grip, PVC cable jacket
    Temperature: -40 to 60°C (-40 to 140°F)
    FDT-41 thru 46 with “-HT” option, FDT-47 and FDT-48: NEMA 6 (IP67), CPVC, PEI, Nylon cord grip, PVC cable jacket
    Temperature: -40 to 90°C (-40 to 194°F)
    FDT-47 “-HT”: NEMA 6 (IP67), PTFE, polyimide, Nickel-plated brass cord grip, PFA cable jacket
    Temperature: -40 to 176°C (-40 to 350°F)
Frequency:
    FDT41 thru 46: 2 MHz
    FDT-47: 1 MHz
    FDT-48: 500 KHz
Cables: RG59 coaxial, 75 ? or twin axial, 78 ? (optional armored conduit)
Cable Length: Standard 6 m (20') 300 m (990') maximum in 3 m (10') increments Software Utilities Utilized to configure, calibrate and troubleshoot flowmeters. Connection via USB A/B cable; software is compatible with Windows 2000, Windows XP, Windows Vista® and Windows® 7
RS485 Network All FDT-40 meters come equipped with RS485 drivers and utilize a MODBUS RTU command set (data can be returned in single-precision, doubleprecision, integer or floating point values). Up to 126 units products can be run on a single daisy-chain network and be individually queried for flow rate, positive flow accumulator, negative flow accumulator and signal strength. Flow accumulators can be cleared at discrete addresses or globally. The RS485 network is also compatible with direct to Excel, application.
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