Dwyer Series PUB - Manual (Page 41)

6: Specification
37
6: Specification
GENERAL
DSP Measurement Technique: Transit time.
Timing Resolution: 50 pico-seconds, continuous signal level indication on display.
Flow Velocity Range: Minimum Velocity 0.33 ft/s; Max Velocity 65.6 ft/s: Bi-directional.
Turn Down Ratio: 100:1
Accuracy: ±0.5% to ±2% of flow reading for flow rate >0.66 ft/s and Pipe ID >3.0 inches (75 mm).
±3% of flow reading for flow rate >0.66 ft/s and Pipe ID in range 0.5 to 3.0 inches (13 to 75 mm).
±6% of flow reading for flow rate < 0.66 ft/s.
Repeatability: ±0.5% of measured value or ±0.066 ft/s (±0.02 m/s) whichever is the greater.
Reynolds Number Correction: Flow velocity corrected for Reynolds number over entire velocity range.
Response Time: < 500ms depending on pipe diameter.
Selectable Flow Units: VELOCITY: m/sec, ft/sec.
VOLUME: L/s, L/min, L/h, gal/min, gal/h, USgals/min, USgals/h, Barrel/h, Barrel/day, m³/s,
m³/min, m³/h.
Selectable Volume Units: L, gal, USgals, Barrel, 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): PUB-A 0.5 to 4.5 inches (13 to 115 mm).
PUB-B 2.0 to 40.0 inches (50 to 1000 mm).
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: Sensor operating temperature is -4°F to +275°F (-20°C to +135°C).