Atec GE-Sensing-Tech-PT878 - Manual (Page 5)

PT878 Specifications
Operation and Performance
Fluid Types
Acoustically conductive fluids, including most clean
liquids, and many liquids with entrained solids or gas
bubbles. Maximum void fraction depends on transducer,
interrogation carrier frequency, path length and pipe
configuration.
Pipe Sizes
0.5 in to 300 in (12.7 mm to 7.6 m) and larger
Pipe Wall Thickness
Up to 3 in (76.2 mm)
Pipe Materials
All metals and most plastics. Consult GE for
concrete, composite materials, and highly
corroded or lined pipes.
Clamp-On Flow Accuracy (Velocity)
• Pipe ID>6 in (150 mm): ±1% to 2% of reading typical
• Pipe ID<6 in (150 mm): ±2% to 5% of reading typical
Accuracy depends on pipe size and whether measurement
is one-path or two-path. Accuracy to ±0.5% of reading may
be achievable with process calibration.
Repeatability
±0.1% to 0.3% of reading
Range (Bidirectional)
–40 to 40 ft/s (–12.2 to 12.2 m/s)
Rangeability (Overall)
400:1
Specifications assume a fully developed flow profile
(typically 10 diameters upstream and 5 diameters
downstream of straight pipe run) and flow velocity greater
than 1 ft/s (0.3 m/s).
Measurement Parameters
Volumetric flow, totalized flow and flow velocity
Electronics
Flow Measurement
Patented Correlation Transit-Time mode
Enclosure
Submersible IP67
Dimensions
Weight 3 lb (1.36 kg),
Size (h x w x d) 9.4 in x 5.5 in x 1.5 in
(238 mm x 138 mm x 38 mm)
Display
240 x 200 pixel backlit LCD graphic display
Keypad
25-key rubberized tactile membrane keypad
Internal Battery
Rechargeable battery: 9 to 11 hr of continuous
operation
Battery Charger Input
100 to 250 VAC, 50/60 Hz, 0.38 A
Memory
FLASH memory, field-upgradable
Operating Temperature
–4°F to 131°F (–20°C to 55°C)
Storage Temperature
–40°F to 158°F (–40°C to 70°C)
To ensure maximum battery life, storage
temperature exceeding 35°C (95°F) is not
recommended for more than one month.
Standard Inputs/Outputs
• One 0/4 to 20 mA current output, 550 W
maximum load
• One user-selectable pulse (solid state, 5 V
maximum) or frequency (5 V square wave, 100 to
10,000 Hz)
• Two 4 to 20 mA analog inputs with switchable
power supply for loop-powered temperature
transmitters