DigitalFlow™ DF868 Datasheet
6Pages

Panametrics liquid ultrasonic flowmeter Applications The DF868 liquid flowmeter is a complete ultrasonic flow metering system for measurement of: • Economical non-intrusive flow measurement • Water and wastewater • Hot/chilled water • Water/glycol solutions • Refined hydrocarbons • Petroleum products • Crude oil • Lubricating oils • Diesel and fuel oils • Solvents • Chemicals • Other liquids • Hazardous (classified) location certifications • Simple set-up and installation • Suitable for wide range of pipe sizes and materials • Two-cha

Panametrics ultrasonic liquid flowmeter The DigitalFlow DF868 is a full-featured, fixed-installation liquid flowmeter designed to meet all your flow metering and energy measurement needs. Its patented Correlation Transit-Time™ digital signal processing provides drift-free measurements in ultraclean and most “dirty” liquids. This includes fluids with gas bubbles and entrained solids that have previously required Doppler-type meters. Dual-channel version reduces costs and improves performance The optional dual-channel/dual-path model can be userconfigured for a variety of applications. It can...

Flowmeter transducers The DF868 flowmeter uses the transit-time flow measurement technique The transit-time technique uses a pair of transducers, with Fluid flow each transducer sending and receiving coded ultrasonic signals through the fluid. When the fluid is flowing, signal transit time in the downstream direction is shorter than in the upstream direction. The difference between these Ultrasonic signal path transit times is proportional to the velocity of the flow. The DigitalFlow DF868 measures this time difference and uses programmed pipe parameters to determine flow rate and...

DF868 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.) • Standard: One-channel Pipe sizes • Using clamp-on transducers: 0.5 to 300 in (12.7 mm to 7.6 m) and larger Keypad 39-key tactile feedback membrane keypad • Using wetted transducers: 1 to 200 in (25.4 mm to 5 m) and larger Pipe wall thickness Up to 3 in (76.2 mm) Pipe materials All metals and most...

Digital interfaces Mountings Flanged flowcell, hot tap or cold tap • Optional: RS485 (multiuser) • Optional: Modbus® RTU Area classifications • Standard: General purpose • Optional: Weatherproof type 4/IP65 • Optional: Explosion-proof Class I, Division 1, Groups C&D; Class II, Groups E,F&G; Class III • Optional: OPC server • Optional: Ethernet Site parameter programming • Menu-driven operator interface using keypad and “soft” function keys • Storage for 10 sites • Optional: Flameproof ( II 2 G Ex d IIC T6) • Optional: Submersible MCerts Product Conformity Certificate Sira MC 050061/00 for...

Additional options PanaView™ PC interface software The DigitalFlow DF868 communicates with a PC through a serial interface and Windows® operating systems. Consult the manual for details on sites, logs and other operations with a PC. Panametrics, a Baker Hughes business, provides solutions in the toughest applications and environments for moisture, oxygen, liquid and gas flow measurement. Experts in flare management, Panametrics technology also reduces flare emissions and optimizes performance. With a reach that extends across the globe, Panametrics’ critical measurement solutions and flare...