Save energy and improve air quality by optimizing filter replacement

Thursday, March 8, 2018
Save energy and improve air quality by optimizing filter replacement

With the VLT® pressure transmitter PTU 025 connected directly to the AC drive, compliance with the ErP directive for ventilation systems is child's play: simply measure values and process them directly in the PID controller of the AC drive.

Danfoss introduces its new ErP-ready pressure sensor solution – the VLT® Pressure Transmitter PTU 025 – at the Light + Building exhibition in Messe Frankfurt, Germany from 18–23 March 2018. You‘ll find Danfoss in Hall 9.0 on Booth D10.
The new VLT® Pressure Transmitter PTU 025 is an integrated solution for airflow control that solves the common problem of when to replace filters in air handling units (AHU) and rooftop units (RTU). Late filter replacement can cause severe energy losses resulting from fans operating against clogged filters, while early replacement means the full potential of the filter lifetime is not utilized.
The module is quickly and simply mounted into the VLT® HVAC Drive, and automatically connected to the network or building management system. Filter pressure information in the ventilation systems is measured and analyzed by the drive according to predefined alarms and control parameters. This allows the drive to raise an alarm and let you know when it’s the right time to replace clogged filters.
This revolutionary product is fast to install and easy to commission and operate, and can also be retrofitted in existing applications. It meets both the drive-side efficiency requirements of the ErP Directive and the new specifications in relation to automated filter control.
Optimization of energy consumption by reducing unnecessary energy losses significantly reduces operating costs, while specification of the optimal time to replace filters ensures the cleanest, freshest air possible for an optimal indoor climate.
For more information, please contact: Robert Unseld, Danfoss Drives Tel. +49 (0)69 8902 489,

Danfoss Drives, member of the Danfoss group, is a world leader in variable speed control of electric motors. Since 1968, we have been pioneers in the AC drives business. Now one of the largest companies in the industry, we deliver on our passion for development, manufacturing and sale of the most versatile AC drives in the world. Our VACON® drives form the robust foundation for optimization in industrial applications. VLT® drives play a key role at the sharp end of global resource management and factory automation. Our AC drives adapt to any motor technology, and serve in the power range 0.18 kW to 6.0 MW. Read more at