Sensor applications

Flow Meters for Heating

  • Sensors for heat pumps, gas boilers, andbiomass heating systems
  • Almost no pressure loss, ensuring efficient operation
  • Robust construction for long-term reliability
  • Trusted technology with proven performancein heating applications
  • Integrated Heat Energy Measurement

Air conditioning unit

Applications

Ultrasonic flow meters are essential for modern heat pumps and other heating technologies. They’re accurate, cost-efficient, robust, and feature state-of-the-art communication interfaces such as Modbus and LIN-Bus. They cause almost no pressure loss and include gas bubble and glycol compensation, revolutionizing flow measurement for heating applications.

Heat pumps

Gas Boilers

Biomass Heating

Energy measurement

Heating circuit diagram

Heat energy measurement

  • Use ultrasonic flow meters in both the source and heating circuit
  • With an external temperature probe for the return flow, accurately measure heat energy in both circuits
  • Monitor overall efficiency to optimize heat pump control effectively
  • Maintain energy balance in geothermal heating sources

Gas bubble detection

Heat exchanger diagram

R290 Heat pumps

  • If the heat exchanger leaks, there’s a safety risk of flammable refrigerants (such as R290/Propane) entering the heating water circuit
  • Ultrasonic Gas Bubble Detection identifies the refrigerant, enabling the initiation of a safety shutdown

Long-term usage

Energy efficient design

Energy efficiency

  • The sensor is designed like a tube and causes almost no pressure loss
  • No moving parts or bluff bodies
  • Pump operates at optimal efficiency by accurately measuring volume flow
  • Optimized refrigerant circuit due to precise measurement of heat energy consumption
  • Increased modulation range through low flow measurement
ALSONIC Reliability

Robust and reliable

  • No moving parts mean no wear and blockage, ensuring a long service life without maintenance
  • Sensor components don't touch the fluid directly, preventing measurement interference from dirt particles in the heating water
  • Sensor ensures a minimum flow to initiate defrosting mode in air-to-air heat pumps
  • Pressure, temperature, and flow measurement enable various predictive maintenance features

Glycol concentration detection

Flowing glycol

Glycol concentration detection and freezing-point estimation

  • Keep your end-user informed about the glycol concentration in their installation or the maximum negative temperature which the system can withstand 

  • Real-time measurement of the glycol concentration in water-glycol mixtures 

  • Selectable glycol type for accurate concentration results

All-in-one solution

All-in-one sensor

Multi-functionality

  • One sensor measures volume flow, temperature, pressure, heat quantity, glycol concentration, and air bubbles
  • Simplify your procurement and design with reduced complexity

OEM Solutions

Puzzle piece

Tailored Solutions for Heating

  • Customized solutions tailored for series products
  • Seamless integration into heat pumps or gas boilers
  • Cost-effective and simplified design
  • Explore Allengra's tailored solutions

Products

Allengra ALSONIC Brass

ALSONIC Brass DN15-DN50

Modular ultrasonic flow sensor made out of brass.
Allengra ALSONIC Plastic

ALSONIC Plastic DN15-DN50

Modular ultrasonic flow sensor made out of high-end plastic material.
L-Type HVAC Flow Meter

L-Type HVAC Flow Meter

Ultrasonic flow meter with plastic housing designed for HVAC/R systems.
Multifunctional Flow Probe

Multifunctional Flow Probe

Multifunctional probe with built-in ultrasonic flow measurement, pressure measurement, temperature measurement and heat metering.

Inline S Flow Meter

Inline S Flow Meter

Tailor made ultrasonic flow sensor full plastic for the HVAC industry with customer specific hydraulic connections.

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