Flexim FLUXUS H721 - Non-Intrusive Ultrasonic Flow Meter for Standard Volume Flow Measurement
The Flexim FLUXUS H721 is Flexim’s flow and analytical measuring system for the hydrocarbon processing industry (HPI). This sophisticated and highly accurate non-intrusive flow meter combines precise ultrasonic flow and sound speed measurement with advanced calculation features and diagnostics. The H721’s nonintrusive flow meter built-in HPI computer calculates API gravity, operational density, density at base conditions and kinematic viscosity. Volumetric flow rates reported by the meter are automatically compensated for temperature and pressure within the meter according to industry standards ASTM1250, GPA TP25 and D4311 thus allowing for precise and dynamic standard volume flow measurement of liquid hydrocarbons.
Flexim FLUXUS H721 - Non-Intrusive Ultrasonic Flow Meter for Standard Volume Flow Measurement
Specs
Measuring Quantities
Flow: Operating volumetric flow rate, standard volumetric flow rate according to ASTM 1250/TP25/4311, flow velocity, mass flow rate
HPI: API gravity, density, normalized density
interface detection: Slope of the HPI physical quantities
HPI: API gravity, density, normalized density
interface detection: Slope of the HPI physical quantities
Accuracy
Measurement uncertainty of the measuring system (volumetric flow rate): ±0.3 % of reading ±0.005 m/s
Measurement uncertainty at the measuring point (volumetric flow rate): ±1.0 % of reading ±0.005 m/s
Measurement uncertainty at the measuring point (volumetric flow rate): ±1.0 % of reading ±0.005 m/s
Time Constant/Response
Transit time (HPI functions): repeatable: 1/(50 • fα) ±10-4 • t
absolute: 1/(5 • fα) ±10-4 • t
fα - transducer frequency
t - total transit time e.g. for transducers with transducer frequency M (fα = 1 MHz):
repeatable: 20 ns ±10-4 . t
absolute: 200 ns ±10-4 . T
absolute: 1/(5 • fα) ±10-4 • t
fα - transducer frequency
t - total transit time e.g. for transducers with transducer frequency M (fα = 1 MHz):
repeatable: 20 ns ±10-4 . t
absolute: 200 ns ±10-4 . T
Certifications/Approvals
Transmitter: ATEX/IECEx zone 2
Transducers: ATEX/IECEx Zone 2, FM Class I /Div 2
Transducers: ATEX/IECEx Zone 2, FM Class I /Div 2
Power Supply
100 ... 230 V AC / 50 ... 60 Hz
12 / 24 V DC
12 / 24 V DC
Output
4 - 20 m+BS13+BT12
Input
Pt100 / Pt1000
4 - 20 mA active / passive
binary
4 - 20 mA active / passive
binary
Communication Protocol
Modbus RTU/TCP
HART
Profibus PA
Foundation Fieldbus
HART
Profibus PA
Foundation Fieldbus
Pipe Size
0.24 inch to 255.9 inch
Temperature Range
Pipe Wall: -40°F to +392°F
System Configuration and Installation
For more detailed Information please download the Technical Specifications
Features
- Advanced Flow and Analytics - Automatic Fluid Identification and Interface Detection
- Standard Volume Flow Compensation - Pressure & Temperature Inputs
- Superior temperature stability - Zero drift. Temperature compensated transducers
- Robust - "Fit for Purpose" durable mounting fixtures and ATEX/IECEx Zone 2, FM Class I /Div 2 transducers
- High turndown range - capability of measuring at very low flow rates
- Bi-directional flow metering