.webp "Dual channel air flow transmitter")
.webp "Dual channel air flow detector")
.webp "Air flow measurement for Air Handling Units")
.webp "Air flow sensor for Air Handling Units")
.webp "Air flow transmitter for Air Handling Units")
.webp "Air flow meter for Air Handling Units")
EU declaration conformity
Dual differential pressure transmitter | 0-1000 Pa | 24 VAC-VDC
Product description
The HPD series offers the capability to simultaneously measure differential pressure in two distinct locations. It requires 24 VDC or 24 VAC supply voltage and its operational range is from 0 to 1.000 Pa. Based on the K-factor of the fan, air volume flow is calculated. Air velocity readout is available by connecting external Pitot tube connection set.
Transmitting measured values realised through two output channels and Modbus RTU connectivity. The output type is selectable: 0-10 VDC, 0-20 mA or 0-100% PWM. All parameters are adjustable via Modbus RTU, enhancing customization and adaptability to specific requirements.
One of the primary applications of the HPD series is monitoring the volume of supplied and extracted air in ventilation systems or Air Handling Units.
Its surface-mountable enclosure has an IP65 rating, safeguarding against the ingress of dust and moisture, thus ensuring reliable performance in various environmental conditions.
Additional specifications and description
Differential pressure, air volume flow or air velocity?
This sensor measures differential pressure [Pa] in two different locations simultaneously. Based on the measurements, air volume flow [m³/hr] or air velocity [m/s] can be calculated. To calculate air volume flow based on the K-factor of the fan, use the optional connection set type PSET-PVC-200 or PSET-QF-200. This connection set can also be used to measure differential pressure. To calculate air volume flow based on the duct cross section [cm²] or air velocity [m/s], use the optional connection set type PSET-PTS-200 or PSET-PTL-200.
This sensor measures differential pressure [Pa] in two different locations simultaneously. Based on the measurements, air volume flow [m³/hr] or air velocity [m/s] can be calculated. To calculate air volume flow based on the K-factor of the fan, use the optional connection set type PSET-PVC-200 or PSET-QF-200. This connection set can also be used to measure differential pressure. To calculate air volume flow based on the duct cross section [cm²] or air velocity [m/s], use the optional connection set type PSET-PTS-200 or PSET-PTL-200.
How does it work?
This sensor has two analogue outputs. Each output transmits the measured differential pressure, air volume flow or air velocity proportionally. The default range of this sensor is 0 to 1.000 Pa. By default, each output transmits 0 V at 0 Pa and 10 V at 1.000 Pa. This range, the output types and all other settings can be adjusted via Modbus RTU.
This sensor has two analogue outputs. Each output transmits the measured differential pressure, air volume flow or air velocity proportionally. The default range of this sensor is 0 to 1.000 Pa. By default, each output transmits 0 V at 0 Pa and 10 V at 1.000 Pa. This range, the output types and all other settings can be adjusted via Modbus RTU.
Analogue output and Modbus
To obtain the measured value from this sensor, there are two options. Either read it from the Modbus registers or via the analogue output. The latter proportionally transmits the measured pressure difference, air flow or air velocity. The standard range of this sensor is 0 to 1.000 Pa. By default, the output is 0 V at 0 Pa and 10 V at 1 kPa. This range, output type (0-10 VDC / 0-20 mA / 0-100% PWM) and all other settings can be adjusted via Modbus RTU.
To obtain the measured value from this sensor, there are two options. Either read it from the Modbus registers or via the analogue output. The latter proportionally transmits the measured pressure difference, air flow or air velocity. The standard range of this sensor is 0 to 1.000 Pa. By default, the output is 0 V at 0 Pa and 10 V at 1 kPa. This range, output type (0-10 VDC / 0-20 mA / 0-100% PWM) and all other settings can be adjusted via Modbus RTU.
Heat Recuperation Unit
This sensor measures air volume flow in two different locations simultaneously. It can be used to monitor the supplied and extracted air volume in ventilation systems or Heat Recuperation Units (HRU).
Easy to connect
The supply voltage, both outputs and Modbus RTU communication can be connected via the screw clamp terminal block. This sensor can be supplied with 24 VDC or with 24 VAC. It is intended for 3-wire connection. The ground of the output (GND) is internally connected to the ground of the supply voltage (V-). Make sure not to connect this common ground to other devices that are powered by a DC voltage.
The supply voltage, both outputs and Modbus RTU communication can be connected via the screw clamp terminal block. This sensor can be supplied with 24 VDC or with 24 VAC. It is intended for 3-wire connection. The ground of the output (GND) is internally connected to the ground of the supply voltage (V-). Make sure not to connect this common ground to other devices that are powered by a DC voltage.
High quality
The enclosure is made of high-quality r-ABS VO (UL94) plastic. This material is heat resistant, very tough and offers good protection against impacts. The pressure connection nozzles are made from Aluminium. The sensor enclosure offers an IP65 protection against ingress of dirt and water. This sensor can be wall-mounted.
The enclosure is made of high-quality r-ABS VO (UL94) plastic. This material is heat resistant, very tough and offers good protection against impacts. The pressure connection nozzles are made from Aluminium. The sensor enclosure offers an IP65 protection against ingress of dirt and water. This sensor can be wall-mounted.
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