Heat Quantity Measurememt in any Environment

The FLUXUS F721 Thermal Energy is specially designed for heat and cold quantity metering within industrial environments and is thus also available as hazardous area approved variants (ATEX, IECEx Zone 2).

Like all measuring systems of the FLUXUS series, the F721 Thermal Energy measures the volumetric flow rate non-invasively via its clamp-on ultrasonic transducers. Simultaneously, temperature probes monitor the temperatures at the supply and return lines of the heating or cooling system - either non-invasively with clamp-on technology or by use of wetted temperature probes.

From the temperature difference as well as the measured volume flow rate and on the basis of the physical media parameters stored in the internal database of the transmitter, the heating or cooling performance is calculated. With the help of the built-in totalizer function the FLUXUS F721 Thermal Energy can also be used as an energy meter.

Further, the FLUXUS F721 Thermal Energy can also be equipped with two measurement channels to:
- allow for a complete energetic monitoring of a heat exchanger,
- to simultaneously measures at two heat- or cold carrying lines or
- to allow accurate measurements even at strongly disturbed flow profiles by compensating these.

Another important advantage of FLUXUS F721 Thermal Energy lies within its high zero point stability and unrivalled accuracy even at very low flow rates - signal drift and significant measurement uncertainty, as it can often be observed at magnetive-inductive heat quantity meters when measuring at low flow rates, can be ruled out. Moreover, even potential mineral deposits on the inner pipe wall cannot influence the measurement.

The range of applications of the F721 Thermal Energy is almost unlimited, not only in terms of pipe dimensions (from 6 mm up to 12.000 mm), pipe materials and their manufactured quality (e.g. badly manufactured GRP pipes or rusty steel pipes) and temperatures (from -190 ° C up to + 650 ° C) but also in terms of flowing media - from process and cooling water, to thermal oils or cryogenic media.

Both the ultrasonic transducers and temperature probes are carefully paired and matched by FLEXIM. Due to these processes, the system measures with a high degree of accuracy and repeatability - even in applications with only small temperature differences, such as in cooling water circuits. The clamp-on ultrasonic sensors are well protected in extremely robust stainless steel mounting fixtures and withstand even the harshest mechanical stresses.

Thus, the FLUXUS F721 Thermal Energy offers the best metrological basis in terms of precision, long-life time, maintenance-free as well as cost-effective monitoring of thermal energy flows within industrial environments and thus forms the foundation for further process optimization tasks within the scope of a holistic energy management system - e.g. according to DIN ISO 50001.

ventajas

• Reliable and wearfree measurement from outside
• Virtually unlimited application range - even at extreme applications (from -190 °C uo to +650 °C)
• Accurate thermal energy measurement due to:
  - highly accurate flow measurement with paired and traceable calibrated ultrasonic transducers
  - highly accurate temperature measurement with paired and traceable calibrated temperature sensors (acc. to DIN EN 1434-1)
• Extremely high measuring dynamics from the lowest to the highest flow velocities - captures even the slightest flows at night time
• Simple, cost-effective retrofitting without any disruption to supply
• Tamper-proof storage of measuring data

Aplicaciones

• Gestión de energía municipal e industrial
  • Mediciones en edificios
    • Helping the Empire State Building to achieve LEED Gold
    • Non-Intrusive Flow Measurement of Chilled Water
    • Thermal Energy and Flow measurement at an Airport
    • Flow Measurement at an Ice Conversion Chiller Facility
  • Calefacción urbana
    • Non-invasive Flow Measurements in a District Heating Network
    • Flow Measurements in a Combined Heat and Power Plant (CHP)
    • Flow Velocity and Volume Flow Measurement on a District Heating Pipeline
  • Eficiencia energética en la industria
    • Flow and Thermal Energy Measurements within Facility Management
    • Flow and Thermal Energy Measurement in Pharmaceutical Production
    • Thermal Energy and Compressed Air Flow Measurements in Automotive Production
    • Compressed Air and Thermal Energy Measurement in an Industrial Environment
    • Medidas de flujo y de energía térmica en el proceso de elaboración de la cerveza
    • Flow and Thermal Energy Measurements in the Beverage Industry
• Industria
  • Alimentación y bebida
    • Flow and Thermal Energy Measurements in the Beverage Industry
    • Medidas de flujo y de energía térmica en el proceso de elaboración de la cerveza
  • Industrias farmacéuticas
    • Flow and Thermal Energy Measurements for Energy Efficiency Tasks
  • Marine
    • Flow and Thermal Energy Measurement at Refrigeration Plants

Hechos técnicas

Incertidumbre de medición del sistema de medición (caudal volumétrico)

±0.3 % de la lectura ±0.005 m/s

Measurement uncertainty at the measuring point (volumetric flow rate)

±1,0 % of reading ±0.005 m/s

Repetibilidad

0.15 % of reading ±0.005 m/s

Alcance de volocidad de flujo

0.01...25 m/s

Transmisor de zona Ex

ATEX/IECEx Zone 2, FM Class I /Div 2

Fuente de alimentación

100-230VAC, 24DC, 12DC

Transductor disponible

Shear wave

para zonas Ex

ATEX/IECEx Zone 1/Zone 2
FM Class I - Div2

para el rango de tamaños de tubería

10mm ... 2400mm

para el rango de temperatura

-40°C ... +240°C

Salidas

4-20mA active/passive
4-20mA HART active/passive
pulse/frequency/binary

Entradas

Pt100/Pt1000

Comunicación digital

Modbus RTU/TCP
BACnet MSTP/IP
M-Bus
Profibus PA
Foundation Fieldbus

Información adicional

For more detailed Information please download the Technical Specifications

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FLUXUS F721TE

Especificación técnica

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• EN
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Industrial Energy Efficiency Solutions

Folleto

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Energy Efficiency - District Heating and Cooling

Folleto

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• EN