P20 Heavy-Duty Industrial Pressure Sensor | 0.25% Precision & 316L Stainless Steel
Severe-Duty, High-Precision Pressure Transmitter for Hydraulics & Process Control
The P20 Series is engineered for high-demanding industrial environments where precision, fast response, and extreme durability are mandatory. Built with a piezoresistive silicon core and a welded 316L stainless steel isolated diaphragm, the P20 delivers superior accuracy (up to 0.25% F.S.) and exceptional stability against aggressive pressure shocks and media.
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High Accuracy & Fast Response: Precision option up to 0.25% F.S. with high dynamic frequency response.
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Severe-Duty Construction: Welded 316L stainless steel body and diaphragm (no internal elastomer seals to degrade).
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Broad Signal Options: Standard 2-wire 4-20mA, 0-10V, 0-5V, or optional HART protocol integration.
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Shock & Spike Resistant: High overload capacity designed to handle water hammer and hydraulic pressure peaks.
Description
Heavy-Duty Performance for Demanding Industrial Loops
In high-pressure hydraulics, chemical dosing, and critical process automation, standard OEM sensors with internal rubber O-rings or fragile diaphragms risk leaks and thermal drift. The P20 series eliminates these points of failure by utilizing a fully welded 316L stainless steel structure and high-grade piezoresistive silicon sensing technology.
Where the P20 Excels Over Standard Sensors
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Heavy Hydraulic Systems: Withstands extreme pressure transients, cavitation, and sudden valve closures without zero-point drift.
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Aggressive Industrial Fluids: Compatible with hydraulic oils, diesel, aggressive gases, and process fluids where standard ceramic or rubber seals fail.
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Precision Closed-Loop Automation: Provides crisp, low-drift signals (0.25% F.S.) for high-end PLCs, SCADA systems, and complex drive loops.
System Integration Simplified
Whether you are configuring a closed-loop hydraulic press control or feeding critical pressure data into a Siemens, Allen-Bradley, or SAIA PLC, the P20 offers standard industrial connectors (Hirschmann DIN 43650, M12 4-Pin) and flexible 4-20mA or 0-10V wiring schemes.
Features
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Piezoresistive Silicon Sensing Core: Delivers high signal-to-noise ratio and fast dynamic response.
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316L Stainless Steel Isolated Diaphragm: All-welded construction for harsh process media and zero internal leak paths.
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High-Precision Calibration: Standard 0.5% F.S. accuracy, with high-precision 0.25% F.S. options available.
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Superior Overload Protection: Handles up to 200% overpressure and high burst pressure thresholds.
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Robust RFI/EMI Resistance: Protected against heavy industrial electrical noise and inverter interference.
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Flexible Process Ports: G1/4″, G1/2″, 1/4″ NPT, and M20x1.5 male standard connection threads.
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IP65 to IP67 Enclosure: Sealed against harsh ambient dust, moisture, and oil spray.
Specification
| Parameter | Technical Details |
| Pressure Ranges | 0…0.1 bar up to 0…1000 bar (Gauge, Absolute, or Sealed Gauge) |
| Accuracy Class | Standard: ≤ ±0.5% F.S. | High-Precision: ≤ ±0.25% F.S. |
| Sensing Technology | Piezoresistive Silicon Core with 316L SS Isolated Diaphragm |
| Output Signals | 4-20mA (2-wire), 0-10V (3-wire), 0-5V (3-wire), HART Protocol (optional) |
| Power Supply | 12-36V DC (for 4-20mA), 15-30V DC (for 0-10V) |
| Long-Term Stability | ≤ ±0.2% F.S. / year |
| Operating Temperature | Medium: -30°C to +85°C | Storage: -40°C to +125°C |
| Temperature Compensation | -10°C to +70°C |
| Overload / Burst Pressure | Overload: 200% F.S. | Burst: 300% F.S. |
| Wetted Materials | 316L Stainless Steel (Diaphragm & Process Port) |
| Electrical Connections | DIN43650 Hirschmann, M12 4-Pin, Direct Cable Outlet |
| Process Connections | G1/4″ male, G1/2″ male, 1/4″ NPT male, M20x1.5 |
FAQ
Q: When should I choose the P20 over the economic P10 series?
A: Choose the P20 when you need higher accuracy (0.25% F.S.), when measuring aggressive fluids/oils that require a 316L stainless steel diaphragm, or in heavy hydraulic environments subject to severe pressure spikes and water hammer. For standard air, water, and HVAC HVAC fan/pump control, the P10 ceramic sensor is usually sufficient.
Q: Does the P20 handle pressure surges and water hammer in hydraulic lines?
A: Yes. The piezoresistive silicon core combined with the 316L diaphragm offers robust shock resistance (up to 200% overpressure rating). For extreme hydraulic environments with frequent shock waves, installing a pressure snubber or restrictor fitting on the G1/4 port is still recommended to maximize longevity.
Q: Can I connect the 4-20mA P20 transmitter directly to my PLC analog input module?
A: Absolutely. The 2-wire 4-20mA loop configuration allows direct connection to any standard 24V DC powered PLC analog input card (Siemens S7, Allen-Bradley, Beckhoff, SAIA, etc.) or process display meter.
Q: Is the P20 compatible with aggressive chemical or marine environments?
A: The wetted parts are 316L stainless steel, which offers broad compatibility with oils, fuels, water, hydraulic fluid, and light chemicals. For seawater or hyper-saline immersion, contact us for specialized titanium or fluoropolymer options.
Q: Can Longvista pre-configure or select the right thread and range for my application?
A: Yes. Longvista provides direct technical consulting from Ticino. We can assist you in calculating the required pressure range, burst safety margin, and connector pinouts before ordering.
Downloads
P20 Heavy-Duty Industrial Pressure Sensor | 0.25% Precision & 316L Stainless Steel – Datasheet
