.webp "Pressure sensor")
.webp "Pressure meter")
.webp "Pressure transmitter")
.webp "Pressure detector")
.webp "HVAC pressure sensor")
.webp "HVAC pressure meter")
EU declaration conformity
Differential Pressure Sensor | -125 to +125 Pa | 24 VDC
Product description
HPS-F--LP is a sensor for measuring differential pressure, air volume flow, or air velocity.
The sensor has one analogue output and operates on a 24 VDC power supply. All measured values and settings are accessible via Modbus RTU communication.
The enclosure is made of premium plastic and provides an IP65 protection. The sensor is designed for wall-mounting.
Additional specifications and description
Which parameters are measured and why is it important?
This sensor measures differential pressure [Pa]. Based on this measurement, air volume flow [m³/hr] or air velocity [m/s] can be calculated. To enable these calculations, are required.
Set types PSET-PVC-200 or PSET-QF-200 can be used to measure differential pressure or air volume flow based on the K-factor of the fan.
Set types PSET-PTS-200 or PSET-PTL-200 can be used to measure air velocity or air volume flow based on the cross section of the duct.
Differential pressure is a key parameter for optimising ventilation system performance. Maintaining the correct differential pressure ensures proper airflow, improves indoor air quality and comfort, and supports optimal energy efficiency.
What are the configuration and customisation options?
This sensor has one analogue output that transmits the measured differential pressure, air volume flow or air velocity. Different output types are available, including 0–10 VDC, 0–20 mA, 0–100% PWM. By default, the sensor measures differential pressure within the range of -125 to +125 Pa. The output transmits 0 V at -125 Pa and 10 V at +125 Pa. The range, the output type and all other settings can be adjusted via Modbus RTU.
The sensor offers a clear, visual status indication of the measured parameters via the green, yellow and red LED light. The green LED indicates that the parameter is within range, yellow signals an alert range, and red indicates out of range values. The second green LED indicates the sensor status. It is activated when power supply and Modbus RTU communication are enabled.
Modbus RTU communication is used to transmit the measured values and can be used to change all of the settings. The Modbus register map provides a complete overview of all adjustable settings.
How is the sensor installed, and what are the power and connectivity requirements?
The sensor is intended for mounting on a wall.
The supply voltage is 24 VDC. The ground terminals of the power supply (V-) and output (GND) are internally not connected. This means that a 4-wire cable is required to connect this sensor. A 24 VDC supply voltage increases the safety and reliability of your installation, by offering protection against short circuit, overload and overvoltage.
The supply voltage, the analogue output and Modbus RTU communication can be connected via the cage clamp terminal blocks. They eliminate the need for routine maintenance and guarantee a reliable contact for solid or stranded wires.
What are the manufacturing quality and protection ratings?
All sensors are designed and manufactured in Europe. Each device is calibrated and tested in our factory. Only high-quality components are used, ensuring long-term stability and accuracy.
The enclosure is produced in-house by Sentera Plastics from grey premium ASA. This material is heat-resistant and provides exceptional strength and excellent protection against impacts. It offers an IP65 protection against ingress of dust and moisture. The pressure connection nozzles are made from aluminium.
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