100 PPM OF 100 Microns in Size Paticulate or Bubbles Required
Non-Invasive Clamp-On Transducer
Large Character Display
User Selected Velocity Units (FPS or MPS)
Measures Fluid Velocities from 0.3 to 30.0 FPS (0.10 to 9.00 MPS)
100:1 Turndown Ratio
Pipe Sizes from 6.3 mm (0.25")
CE Version Available
This product is no longer available and is being replaced by our FDT-25
The FD613 Series ultrasonic flow meter features advanced Trans-Phase measuring technology, providing
accurate and reliable flow velocity assessments in closed full pipe systems. The FD613 utilizes a non-
invasive clamp-on transducer which is placed on the outside of a pipe. Within seconds, the large
18 mm (0.7") LCD provides stable flowrate readings in feet (or meters) per second. This product operates
on metal or plastic pipes containing liquids with more than 100 ppm of 100 micron or larger suspended
solids or entrained gases.
PRINCIPLE OF OPERATION The FD613 Series flowmeter utilizes an advanced Trans-Phase measuring
technique, providing accurate, non-invasive fluid velocity assessment without opening the pipe. The
FD613 Series utilizes two piezoelectric crystals contained within one transducer to transmit ultrasonic
energy into the fluid stream and receive back energy reflected off discontinuities (suspended particles
or entrained gases) within the moving liquid. Transformations that result from the energy reflections
are processed and converted to a measurement of fluid velocity by the sophisticated software algorithm.
The processor also controls all operations of the instrument from its ultra-efficient battery management
circuitry to a proprietary FIR (Finite Impulse Response) filtration program.
SPECIFICATIONS Supply Voltage: Battery powered, non-rechargeable alkaline, four AA cells, providing over 30 hours of continuous
operation Flow Range: 0.30 to 30.00 FPS (0.10 to 9.00 MPS) Display: Single line – four-digit LCD readout of velocity (18 mm (0.7") digits), signal strength,
measuring units, and low battery indication Temperature: -20 to 60°C (-28 to 140°F) Enclosure Rating/Dimensions: NEMA-12X ABS plastic; 200 H x 100 W x 38 mm H (7.76 x 4 x 1.5") Weight: 0.7 kg (1.5 lb) Accuracy: ±2% full scale Transducer Transducer Material: Plated body; ULTEM 1000 sensor material Cable:
2 m (6.6 ft) cable and connector Temperature: -40 to 82°C (-40 to 180°F) Humidity: 0 to 95% non-condensing Mounting Method: Clamp-on style with DOW 111 coupling compound
† All amounts shown in AUD Note: FD613 comes complete with carrying case, silicone couplant, 4 "AA" batteries, NIST cetificate and operator's manual.
FD613 sensors sold separately.
FD614-CE comes with carrying case, silicone couplant, 4 "AA" batteries, 1 FD614-S2-CE clamp on sensor for pipes 1" diameter and larger, NIST certificate and operator's manual.
FD614-CE comes complete with sensor. If replacement or spare sensor is required order FD614-S2-CE.
FD614-CE and FD613 sensors are not interchangeable.