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Pressure transmitter | display | -125 to 125 Pa | 24 VDC

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Article code DPS-F--LP
GTIN 0.540.100.300.150.9
Intrastat number 90.26.20.20
Category Differential pressure transmitters with display
Current stock 10 U.
Factory lead time 4 Week(s)

Product description

This is a differential pressure sensor equipped with a display operating within the range from -125 to +125 Pa and powered by a 24 VDC supply voltage. It is capable of measuring either differential pressure or air volume flow. Additionally, air velocity readout is achievable by connecting an external Pitot tube connection set, namely PSET-PTS-200 or PSET-PTL-200. This sensor is commonly used for monitoring air volume flow and regulating the supply of fresh air.

The measurement is visually represented on a 7-segment LED display. The measured values are transmitted via both analogue output and Modbus RTU communication, with the output type being customizable (0—10 VDC, 0—20 mA or 0—100 % PWM).

Four LED indicators provide visual feedback on the sensor status and measured values. Furthermore, adjustments to the differential pressure range and other settings can be made through Modbus RTU configuration.

Additional specifications and description

 
Differential pressure, air volume flow or air velocity?
This sensor measures differential pressure [Pa]. Based on this measurement, 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. DPS with PSET-PVC
 
Visual indication
The 7-segment LED display visualises the measured pressure, volume flow or air velocity. On top of that, the green, yellow and red LED offer a visual indication of the measured value. 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 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 sensor status. It is activated when power supply and Modbus RTU communication are enabled. 
 
How does it work?
This sensor has one analogue output. It transmits the measured differential pressure, air volume flow or air velocity proportionally. The default range of this sensor is -125 to +125 Pa. By default, the output transmits 0 V at -125 Pa and 10 V at +125 Pa. This range, the output type and all other settings can be adjusted via Modbus RTU. The output type can be adjusted via Modbus RTU: 0-10 VDC / 0-20 mA / 0-100 % PWM.
 
Reduced installation time
The supply voltage, the analogue output and Modbus RTU communication can be connected via the cage clamp terminal block. They eliminate the need for routine maintenance and guarantee a reliable contact for solid or stranded wires. 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. 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 sensor can be wall-mounted.
 

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