Dwyer UFC User Manual download pdf (Page 53)

8: Specification

GENERAL

DSP Measurement Technique: Transit time.

Timing Resolution: 50 pico-second, continuous signal level indication on display.

Flow Velocity Range: Minimum Velocity 0.33 ft/s; Max Velocity 33 ft/s: Bi-directional.

Turn Down Ratio: 200:1

Accuracy: ±0.5% to ±2% of flow reading for flow rates >0.03 ft/s and Pipe OD >3.0 in (75 mm).

±3% of flow reading for flow rates >0.03 ft/s and Pipe OD in range 0.5 to 3.0 in (13 to 75 mm).

±6% of flow reading for flow rates <0.03 ft/s.

Repeatability: ±0.5% of measured value or ±0.03 ft/s whichever is the greater.

Reynolds Number Correction: Flow velocity corrected for Reynolds number over entire velocity range.

Response Time: < 500 ms depending on pipe diameter.

Selectable Flow Units: VELOCITY: m/sec, ft/sec.

VOLUME: L/s, L/min, L/h, gal/s gal/min, gal/h, USgals/s, USgals/min, USgals/h, Barrel/h, Barrel/

day, m³/s, m³/min, m³/h.

Selectable Volume Units: US gallons, gallons, barrels (oil), liters, m³.

Total Volume: 12 Digits - forward and reverse.

APPLICABLE FLUID TYPES

Fluid Condition: Clean liquids or oils that have less than 3% by volume of particulate content. Applications include

river water, sea water, potable water, demineralized water, glycol/water mix, hydraulic systems

and diesel oil.

APPLICABLE PIPE TYPES

Pipe Materials: Any sonic conducting medium such as Carbon Steel, Stainless Steel, Copper, UPVC, PVDF,

Concrete, Galvanized Steel, Mild Steel, Glass, Brass. Including Lined Pipes - Epoxy, Rubber,

Steel, Plastic.

Pipe Dimension (outside diameter): Min 0.5

inch (13 mm); Max 197 inches (5000 mm) with D sensor set.

Pipe Wall Thickness: 0.04 to 3.0 inches (1 to 75 mm).

Pipe Lining: Applicable pipe linings include Rubber, Glass, Concrete, Epoxy, Steel.

Pipe Lining Thickness: 0.0 to 1.0 inches (0 to 25 mm).

Pipe Wall Temperature Range: Standard sensor operating temperature is -4°F to +275°F (-20°C to +135°C).

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Dwyer UFC User Manual Page 53