Siemens QBE63-DP05 Differential Pressure Sensor
The Siemens QBE63-DP05 is a high-precision, industrial-grade differential pressure sensor engineered to accurately measure pressure differences in both liquid and gaseous media. Functioning as an essential data feedback instrument for building automation and process control networks, this robust sensor translates measured differential pressure variants into a standard linear 0 to 10 V DC analog output signal. Built with a heavy-duty stainless steel measurement cell and housing, it offers exceptional long-term calibration stability and resistance to system overpressures in critical HVAC, pumping, and plant utility networks.
Key Features
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Dual-Media Compatibility: Carefully optimized to deliver accurate measurements for neutral liquids, hot water, chilled water, and non-corrosive gaseous compounds.
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Resilient Piezo-Resistive Measuring Element: Utilizes a high-end ceramic sensor diaphragm that provides excellent linearity, minimal temperature drift, and superior fatigue life under constant hydraulic cyclical stress.
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High Overpressure Safety Margin: Engineered to withstand high static system pressures and sudden pressure spikes up to 21 bar (2.1 MPa) without compromising calibration parameters or internal seal integrity.
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Direct Linear Analog Feedback: Transmits a continuous 3-wire, 0…10 V DC output signal, offering instant, hassle-free integration into Siemens Desigo systems, programmable logic controllers (PLCs), or standalone building management hardware.
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Rugged Mechanical Construction: Outfitted with an IP54-rated protective enclosure and a sturdy integrated mounting bracket for secure installations against walls or mechanical piping structures.
Technical Specifications
| Feature | Specification |
| Model / Reference | QBE63-DP05 |
| Brand | Siemens (Building Technologies) |
| Product Type | Differential Pressure Sensor |
| Measuring Range | 0 to 5 bar (0…0.5 MPa) |
| Output Signal | 0…10 V DC (3-wire configuration) |
| Supply Voltage | 24 V AC (15%, 50/60 Hz) or 20dots30 V DC |
| Max. Admissible Static Pressure | 21 bar (2.1 MPa) |
| Pressure Connections | G 1/8″ Internal Threaded Ports |
| Permissible Media Temperature | -10°C to +80°C |
| Ingress Protection Rating | IP54 |
| Housing / Base Material | Stainless Steel 1.4305 (Housing) / Brass (Base block) |
Applications
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HVAC Pump Control: Measuring the differential pressure drop across large commercial water circulation pumps to dynamically regulate variable speed drives (VFDs) and optimize energy efficiency.
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Chiller and Boiler Loop Monitoring: Tracking fluid flow pressure variants across heat exchangers and chillers to verify minimum required flow rates and prevent core freezing.
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Industrial Filtration Systems: Gauging the pressure differential across large fluid filters to trigger automated backwashing cycles or alert operators of filter element clogging.
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District Heating Networks: Monitoring line-to-return pressure drops inside distributed heating plants to balance large-scale thermal networks.
