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On-Demand Webinar:

Ultra-low Differential Pressure Sensors for HVAC – Are Both High Sensitivity and Reliability Possible?

In HVAC systems, pressure sensors are a central element for monitoring volumetric flow rates and pressures in lines and rooms. This webinar explains how First Sensor’s flow-based LMI differential pressure sensor enables superior sensitivity for the measurement of ultra-low pressures.

Date: May 3, 2017
Time: 10 AM EDT (7 AM PDT / 4:00 PM CEST)
Duration: 1 hour
Presented by:


In HVAC systems, the ability to monitor volumetric flow rates and pressures in lines and rooms is decisive when it comes to operating heating, ventilation, and air-conditioning systems efficiently and economically. Pressure sensors are a central element for controlling the systems. To ensure compliance with strict legal requirements and to minimize energy costs, ever-decreasing measuring ranges as well as greater measuring sensitivities, accuracies, and long-term stabilities of the sensors are required. In addition, the pressure sensors must cope with particular requirements in HVAC systems, such as dust-laden air, and must be small and easy to integrate in OEM systems.

This presentation covers First Sensor's flow-based LMI differential pressure sensor, based on thermal flow measurement of air through a micro-flow channel integrated within the sensor chip. This innovative sensor technology enables superior sensitivity for the measurement of ultra-low pressures from 25 Pa (0.25 mbar) full scale with high resolution and offset stability. The extremely low gas flow through the sensor ensures high immunity to dust contamination, humidity and connection tube lengths/diameters compared to other flow-based pressure sensors.

Key Takeaways

  • Learn the issues with sensors for HVAC applications, and how First Sensor's micro flow technology can solve them
  • Understand the difference between micro-flow channel design versus conventional technology
  • Learn about sensitivity, offset long-term stability, dust immunity and operational versatility


Dr. Adriano Pittarelli, Product Marketing Manager, First Sensor

Dr. Adriano Pittarelli has 15 years of experience in using pressure and flow sensors for medical and HVAC applications. For the last three years he has been focused on the patented First Sensor micro-flow technology which offers outstanding performance especially for HVAC applications. Adriano is the product marketing manager responsible for all flow based pressure sensors of First Sensor.