Compact Pressure Transmitter | 4-20mA & 0-10V for HVAC, VFDs & Air Compressors | P10
High-Reliability Compact Pressure Transmitter for HVAC, VFD Control & Air Compressors
The P10 Series is an industrial-grade ceramic pressure sensor engineered for air, water, refrigeration, and hydraulic systems. Featuring robust EMI/RFI shielding and wide output options (4-20mA, 0-10V, 0.5-4.5V), it integrates seamlessly with Variable Frequency Drives (VFDs), PLCs, and Building Management Systems (BMS).
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Standard Signal Options: 2-wire 4-20mA, 3-wire 0-10V, 0-5V, or 0.5-4.5V ratiometric.
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Multiple Connectors: Hirschmann DIN43650, M12 4-Pin, Packard, or direct-sealed lead cable (P91 configuration).
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Durable Sensing Core: Ceramic cell with automatic temperature compensation and IP65–IP67 protection.
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Versatile Pressure Ranges: Gauge and negative pressure options from -1 bar up to 600 bar.
Description
Engineered for Seamless System Integration
In industrial automation and HVAC systems, a pressure sensor is only as good as its integration with your motor drive or control unit. The P10 series provides exact signal matching for constant-pressure pump controls, air compressors, and ventilation systems.
Key Application Areas
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VFD Constant Pressure Control: Connect the 4-20mA or 0-10V output directly to your VFD PID feedback loops for energy-efficient water pumping and fan velocity control.
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Air Compressors & HVAC Ducts: Monitor pneumatic pressure lines, refrigeration circuits, and HVAC air loops with stable ceramic sensing technology.
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Hydraulics & Process Lines: High-pressure variants up to 600 bar handle harsh industrial pressure spikes with high EMI/RFI immunity.
Configuration Options (P10 vs. P91 Pre-Wired)
To simplify field service and installation, choose between two primary connection profiles:
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P10 Plug Series: Uses detachable Hirschmann DIN43650 or M12 4-Pin connectors for quick replacement and field maintenance.
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P91 Cable Series: Features a direct-sealed cable outlet (standard 40cm or custom lengths) ideal for compact OEM machinery and tight compressor enclosures.
Features
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Ceramic Sensing Cell: Highly resistant to mechanical wear, cavitation, and aggressive process media.
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Broad Electrical Compatibility: Configurable in 4-20mA (10-30V DC), 0-10V (15-30V DC), and 0.5-4.5V ratiometric (5V DC).
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Industrial Shielding: Advanced internal electronics guard against electrical noise and radio frequency interference (EMI/RFI).
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Flexible Process Ports: Available in standard G1/4 male, G1/2 male, 1/4 NPT male/female, 1/8 NPT, and 7/16-20 UNF.
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Environmental Protection: IP65 rating on standard DIN connectors and up to IP67 on direct-cable and M12 configurations.
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Automatic Thermal Compensation: Maintains reliable accuracy across working temperature swings.
Specification
| Parameter | Technical Details |
| Pressure Ranges | -1…0…1 bar up to 0…600 bar (Gauge / Negative) |
| Output Signals | 4-20mA (2-wire), 0-5V, 0-10V, 0.5-4.5V Ratiometric (3-wire) |
| Power Supply | 10-30V DC (for 4-20mA), 15-30V DC (for 0-10V), 5V DC (Ratiometric) |
| Accuracy | Standard: ≤ ±1.0% F.S. |
| Long-Term Stability | 0.2% F.S. ±0.05% / year |
| Operating Temperature | Medium: -30°C to +105°C |
| Temperature Compensation | 0°C to +50°C (≤ 2% F.S. thermal drift) |
| Wetted Materials | 304 Stainless Steel, Ceramic Diaphragm, FKM / CR / HNBR O-Rings |
| Electrical Connectors | DIN43650 Hirschmann, M12 4-Pin, Packard 3-Pin, Direct Sealed Cable (P91 style) |
| Process Connections | G1/4″ male, G1/2″ male, 1/4″ NPT male/female, 1/8″ NPT male, 7/16-20 UNF |
| Ingress Protection | IP65 (DIN / Packard) / IP67 (M12 / Direct Cable) |
FAQ
Q: Which output signal should I select for a VFD pump control setup?
A: If your Variable Frequency Drive (VFD) is installed more than a few meters away from the sensor, choose 4-20mA (2-wire) to eliminate signal voltage drop. For direct control panel wiring or Building Management Systems (BMS) that default to voltage loops, select 0-10V.
Q: What is the difference between the P10 standard model and the P91 configuration?
A: The P10 uses quick-disconnect plug bodies (such as Hirschmann DIN or M12) for fast field replacement. The P91 option replaces the plug housing with a pre-wired, direct-sealed cable outlet for space-constrained machine OEM applications.
Q: Can this sensor handle water pressure spikes or hydraulic shock?
A: Yes. The ceramic diaphragm offers strong burst and overpressure resistance. For systems prone to extreme pressure hammer (such as fast-closing solenoid valves), installing a simple pressure snubber upstream of the sensor port is recommended.
Q: Is this sensor compatible with air compressors and refrigeration media?
A: Absolutely. The P10 features inert ceramic sensing elements and fluorine rubber seals (FKM/HNBR) compatible with non-corrosive gases, air, water, synthetic oils, and standard refrigerants.
Q: Does Longvista provide technical support for wiring and parameter setup?
A: Yes. As a Swiss industrial automation specialist, Longvista offers direct wiring guidance and setup advice for pairing pressure transmitters with VFDs and controllers.
Datasheet
Compact Pressure Transmitter | 4-20mA & 0-10V for HVAC, VFDs & Air Compressors | P10 – Datasheet
