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Chapter 10. Specifications
214 Transport® Model PT878 Portable Liquid Flowmeter User’s Manual
Note: 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.
Range: –12.2 to 12.2 m/s (–40 to 40 ft/s)
Rangeability: 400:1
Repeatability: ±0.1% to 0.3% of reading
Note: 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).
Energy Accuracy The accuracy of the energy measurement is a
(% of reading): combination of the accuracy of the flow and
temperature measurement. Accuracy of 1% is
typical for calibrated systems.
Low Voltage This unit complies with European Standard
Directive EN61010-1 Installation Category II,
Compliance: Pollution Degree 2.
EMC This unit complies with EN61326:1998
Directive CL.A Annex C. For continuous unmonitored
Compliance operation, follow provisions of the 89/336/EMC
Compliance.
10.2 Electrical
Internal Batteries
Type: Rechargeable batteries. (Optional NiCad 6
R
nonrechargeable alkaline available.)
Battery Life: 9-11 hours of continuous operation is typical
Battery Charger:
Input: 100-250 VAC, 50/60 Hz, 0.38 A
Memory: 1 MB datalog/site battery-backed RAM
1 MB program FLASH memory