B7.2 - Development of Flow Sensors Realized with Printed Circuit Board Technology for Air Conditioning Systems

Glatzl, Thomas; Ćerimović, Samir; Steiner, Harald; Talic, Almir; Beigelbeck, Roman; Sauter, Thilo; Jachimowicz, A.; Keplinger, Franz

doi:10.5162/sensor2015/b7.2

Proceedings SENSOR 2015 2015

DOI: 10.5162/sensor2015/b7.2

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B7.2 - Development of Flow Sensors Realized with Printed Circuit Board Technology for Air Conditioning Systems

Thomas Glatzl

Samir Ćerimović²,

Harald Steiner³

et al.

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Cited by 2 publications

References 11 publications

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A Thermal Flow Sensor Based on Printed Circuit Technology in Constant Temperature Mode for Various Fluids

Glatzl

Beigelbeck

Ćerimović

et al. 2019

Sensors

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We present a thermal flow sensor designed for measuring air as well as water flow velocities in heating, ventilation, and air conditioning (HVAC) systems. The sensor is designed to integrate the flow along the entire diameter of the pipe also quantifying the volume flow rate of the streaming fluid where the calorimetric principle in constant temperature operation is utilized as a readout method. In the constant temperature mode, a controller keeps a specific excess temperature between sensing elements at a constant level resulting in a flow dependent heater voltage. To achieve cost-effective sensors, the fabrication of the transducer is fully based on printed circuit board technology allowing low-cost mass production with different form factors. In addition, 2D-FEM simulations were carried out in order to predict the sensor characteristic of envisaged setups. The simulation enables a fast and easy way to evaluate the sensor’s behaviour in different fluids. The results of the FEM simulations are compared to measurements in real environments, proving the credibility of the model.

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A Thermal Flow Sensor Based on Printed Circuit Technology in Constant Temperature Mode for Various Fluids

Glatzl

Beigelbeck

Ćerimović

et al. 2019

Sensors

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Hot-film and calorimetric thermal air flow sensors realized with printed board technology

Glatzl

Ćerimović

Steiner

et al. 2016

J. Sens. Sens. Syst.

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Abstract. This paper addresses the development of flow sensors optimized for heating, ventilating, and air conditioning systems. The sensors are based on the printed circuit board technology facilitating robust, flexible (in terms of layout), and cost-effective devices. Two approaches for measuring fluid quantities like flow velocity over the whole cross section are investigated in this context. The first one relies on hot-film transduction and stands out for its simplicity, but also shows some severe limitations, which can be circumvented by the second approach based on calorimetric transduction. Supported by extensive numerical simulations, several sensor embodiments were investigated and fabricated. After experimental characterization, measurement and simulation results were compared, which turned out to be in good agreement.

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B7.2 - Development of Flow Sensors Realized with Printed Circuit Board Technology for Air Conditioning Systems

Cited by 2 publications

References 11 publications

A Thermal Flow Sensor Based on Printed Circuit Technology in Constant Temperature Mode for Various Fluids

A Thermal Flow Sensor Based on Printed Circuit Technology in Constant Temperature Mode for Various Fluids

Hot-film and calorimetric thermal air flow sensors realized with printed board technology

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