DigitalFlow™ Multipurpose Ultrasonic Liquid Flowmeter Startup Guide (1- and 2-Channel) 41
Chapter 4. Specifications
4.1.8 Fluid Types
4.1.8a Transit-Time Mode:
Acoustically conductive fluids, including most clean liquids and many with entrained solids or gas bubbles. Maximum
void fraction depends on transducer interrogation carrier frequency, path length and pipe configuration.
4.1.8b TransFlection Mode:
Multiphase fluids, including raw sewage, sludge, slurries, tar sands, acoustically attenuating liquids and other
demanding applications.
4.2 Electrical Specifications
The electrical specifications for the Model DF868 flowmeter are divided into the following categories:
4.2.1 Power Supply
4.2.1a Standard:
100 to 130 VAC, 50/60 Hz
200 to 265 VAC, 50/60 Hz
4.2.1b Optional:
12 to 28 VDC, ±5%
4.2.2 Power Usage
20 W maximum
4.2.3 Operating Modes
4.2.3a Flow Measurement:
Transit-Time for clamp-on or wetted transducers.
TransFlection for clamp-on transducers.
4.2.3b Energy Measurement:
To calculate energy flow rate, use Analog Input Board for transmitters. Use RTD Input board for direct RTDs.
4.2.4 European Compliance
This unit complies with EMC Directive 2004/108/EC and 2006/95/EC Low Voltage Directive (Installation Category II,
Pollution Degree 2).
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