Johnson Controls DP150MR2-SA Universal Differential Pressure Transducer
The Johnson Controls DP150 Series (specifically the DP150MR2-SA) is an elite, multi-range low differential pressure transducer designed for HVAC professionals. At its core is a welded, all-stainless steel capacitive sensing element that provides superior accuracy and long-term stability with minimal amplification.
This universal model is the ultimate “truck stock” solution for contractors, offering the flexibility of 8 field-selectable ranges and 3 field-selectable outputs. Whether you are performing a new installation, a retrofit, or an emergency service call, the DP150 adapts to the job site requirements with a simple flip of a switch.
Key Features
Universal 3-in-1 Design: Includes a field-configurable duct probe, standard wall mount tabs, and a DIN rail mount option to handle any installation scenario.
Multi-Range Versatility: Features 8 field-selectable pressure ranges, allowing one unit to replace multiple single-range transducers.
Selectable Outputs: Easily toggle between different signal outputs to match your controller’s requirements.
On-Board Display: Equipped with a bright 3.5 digit LCD for real-time pressure monitoring and easier calibration.
Simplified Calibration: Features field-accessible pushbuttons for Zero and Span adjustments, eliminating the need for specialized tools.
Rugged Sensing Tech: The “dead-ended” capacitive sensor is housed in stainless steel, making it suitable for harsh environments and demanding air-flow applications.
Power Flexibility: Operates on unregulated AC or DC power, providing compatibility with various building automation systems (BAS).
Technical Specifications
| Feature | Details |
| Manufacturer | Johnson Controls |
| Model Number | DP150MR2-SA (SP150 Series) |
| Sensor Type | All-Stainless Steel Capacitive |
| Ranges | 8 Field-Selectable |
| Outputs | 3 Field-Selectable |
| Display | 3.5 Digit LCD |
| Mounting | Wall, Duct Probe, or DIN Rail |
| Operation | Unregulated AC or DC |
Suggested Applications
Commercial HVAC: Monitoring building static pressure and cleanroom pressure.
Duct Static Pressure: High-accuracy monitoring for VAV systems.
Filter Monitoring: Detecting pressure drops across filters to signal maintenance.
Retrofits: Replacing older, less stable transducers with a modern, high-stability unit.
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