Gunnar, why is Presigo PDTN needed on the market?
The simple answer is that building ventilation control systems are expected to use less energy while at the same time delivering better air quality. PDTN has been developed to measure more – and more accurately – so that ventilation systems can adjust airflow according to the exact demand at any given moment.
The more advanced, technical answer is that PDTN addresses two needs. First, it must be able to provide the correct amount of air based on the building’s requirements, where the differential pressure transmitter measures pressure and flow in order to deliver better data. The second need is filter monitoring, where PDTN replaces pressure switches or pressure transmitters to generate more precise information. PDTN has been designed to meet these needs in a more cost-effective way.
How does it work?
It is a product that measures differential pressure, primarily for ventilation applications. PDTN makes the measurement signal available to the control system in several different ways depending on the requirements, for example 0–10 V, 4–20 mA, or communication via BACnet, Modbus or EXOline. It covers the pressure ranges needed for all types of ventilation systems.
In addition, PDTN features a shine-through display on the lid. The unit is not always installed in optimal lighting or space conditions, so this new feature allows technicians to clearly read the text from a distance and even in dark environments.
How does PDTN simplify installation, commissioning, and daily operation of ventilation systems?
PDTN simplifies this by combining high flexibility with ease of use in a robust IP54-rated design. The product measures differential pressure and makes the measured value available both to the control system and to service technicians through several signal and communication options.
The built-in Bluetooth function together with Regin:GO significantly simplifies testing and commissioning, while also reducing the risk of incorrect configuration compared to products that use DIP switches. The result is faster commissioning and reliable performance in daily operation.
The design is also adapted to provide the installer with plenty of space for wiring, making installation simple and efficient.
In what ways has Presigo PDTN been developed compared to Presigo PDT?
PDTN is a further development of PDT and offers several new features that together make the product more complete, flexible, and efficient to install and use. Support for measuring both positive and negative differential pressure expands the range of applications, while the ability to configure and commission the product via Regin:GO greatly simplifies field work.
PDTN is also available in versions with a shine-through display for clear readability even in demanding environments. In addition, both 0–10 V and 4–20 mA signals can be adapted to match the needs of the connected control system, and the larger wiring space inside the enclosure contributes to a faster and more installer-friendly solution.