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EU declaration conformity
Differential pressure controller | -125 to 125 Pa | PoM
Product description
Differential pressure controller for fans to generate a Variable Air Volume flow. The operating range is -125 to +125 Pa.
The supply voltage is 24 VDC PoM - Modbus RTU communication and the supply voltage are connected via the RJ45 socket.
It controls differential pressure or air volume flow. Air velocity control is also possible in combination with a Pitot tube connection set: PSET-PTS-200. .
EC fans, frequency inverters or AC fan speed controllers can be controlled via Modbus RTU communication.
The four LED indicators provide a visual indication of the device status and the controlled values.
Additional specifications and description
Constant pressure, air volume flow or air velocity?
This differential pressure controller controls EC fans or AC fan speed controllers. It maintains the differential pressure [Pa] constant at the set point. The operating range is -125 to +125 Pa. It is also possible to control fan speed based on air volume flow [m³/hr] or air velocity [m/s]. To control 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 control differential pressure. To control 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. The setpoint can be adjusted via Modbus RTU.
This differential pressure controller controls EC fans or AC fan speed controllers. It maintains the differential pressure [Pa] constant at the set point. The operating range is -125 to +125 Pa. It is also possible to control fan speed based on air volume flow [m³/hr] or air velocity [m/s]. To control 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 control differential pressure. To control 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. The setpoint can be adjusted via Modbus RTU.
Visual indication
This pressure controller offers a clear, visual indication of the differential pressure level via the green, yellow and red LED. The green LED indicates that the pressure level is within range. When the pressure level enters the alert range, the yellow LED lights up. Red LED on means: differential pressure out of range. The LEDs can also indicate the status of the air volume flow or air velocity. The second green LED indicates the device status. It is activated when power supply and Modbus RTU communication are enabled.
This pressure controller offers a clear, visual indication of the differential pressure level via the green, yellow and red LED. The green LED indicates that the pressure level is within range. When the pressure level enters the alert range, the yellow LED lights up. Red LED on means: differential pressure out of range. The LEDs can also indicate the status of the air volume flow or air velocity. The second green LED indicates the device status. It is activated when power supply and Modbus RTU communication are enabled.
How it works
This pressure controller controls EC fans or AC fan speed controllers based on the measured differential pressure, air volume flow or air velocity. The fan speed is controlled to maintain the measured value constant at the setpoint. The setpoint can be adjusted via Modbus RTU.
This pressure controller controls EC fans or AC fan speed controllers based on the measured differential pressure, air volume flow or air velocity. The fan speed is controlled to maintain the measured value constant at the setpoint. The setpoint can be adjusted via Modbus RTU.
This pressure controller has no analogue output. It controls EC fans or AC fan speed controllers via Modbus RTU communication.
To match the reaction time of the fan to the application, P and I factors can be adjusted via Modbus RTU. P and I stand for proportional-integral control, a type of feedback control system commonly used in engineering and control theory. This control system adjusts the output based on the difference between the desired setpoint and the actual value. Integrated PI control means that both proportional and integral actions are integrated into the control scheme.
Reduced installation time
One RJ45 connector is all it takes to connect this sensor controller! Modbus RTU communication and 24 VDC power supply are connected via one cable - we call it Power over Modbus or PoM. All measured values are available via Modbus RTU communication. Most 24 VDC power supplies offer protection against short circuit, overload and overvoltage. A 24 VDC supply voltage increases the safety and reliability of your installation.
One RJ45 connector is all it takes to connect this sensor controller! Modbus RTU communication and 24 VDC power supply are connected via one cable - we call it Power over Modbus or PoM. All measured values are available via Modbus RTU communication. Most 24 VDC power supplies offer protection against short circuit, overload and overvoltage. A 24 VDC supply voltage increases the safety and reliability of your installation.
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 pressure controller can be wall-mounted indoors or outdoors.
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 pressure controller can be wall-mounted indoors or outdoors.
Maintain overpressure in staircases
A typical application for differential pressure controllers with this range is to maintain underpressure or overpressure in staircases or cleanrooms.
For instance, by creating a constant overpressure in the staircase, it remains smoke-free in case of fire.
A typical application for differential pressure controllers with this range is to maintain underpressure or overpressure in staircases or cleanrooms.
For instance, by creating a constant overpressure in the staircase, it remains smoke-free in case of fire.
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