Description
The DP1WC/250 P-16 is a rugged, wet/wet differential pressure transducer from Precision Sensors, a business unit of United Electric Controls, designed for extreme aerospace and industrial applications. Featuring all-welded Inconel construction and dual-redundant sensing elements, it delivers ±0.05% full-scale accuracy across 250 psid while surviving 16 g vibration, 1000 g shock, and 25,000+ pressure cycles—making it the go-to choice when failure is not an option.
Application Scenarios
On a deepwater Gulf of Mexico tension-leg platform, hydraulic power unit (HPU) filter clogging was triggering false shutdowns worth $1.2 M per event. The DP1WC/250 P-16 was installed across each duplex filter to monitor true differential pressure under 3000 psi line pressure. Its wet/wet design eliminated blocked impulse lines that plagued diaphragm-seal units, while dual-redundant outputs allowed 2oo3 voting in the Triconex SIS—eliminating spurious trips entirely and extending filter life by 40%. Operators now trust the DP1WC/250 P-16 to keep 180,000 bbl/day flowing without babysitting, proving that in subsea hydraulics, precision isn’t a luxury—it’s insurance.
Parameter
| Parameter | Value/Description |
|---|---|
| Product Model | DP1WC/250 P-16 (Dual-redundant Wet/Wet Transducer) |
| Manufacturer | Precision Sensors / United Electric Controls |
| Product Category | Differential Pressure Transducer |
| Pressure Range | 0–250 psid (Bidirectional wet/wet; 3000 psi common-mode) |
| Accuracy | ±0.05% FS (including linearity, hysteresis, repeatability) |
| Output | Dual 0.5–4.5 V DC ratiometric (independent sensing elements for redundancy) |
| Media Compatibility | Hydraulic oil, seawater, Skydrol, fuels (All-welded Inconel wetted parts) |
| Operating Temperature | -55°C to +135°C compensated (Full accuracy across aerospace extremes) |
| Vibration | 16 g peak, 20–2000 Hz (MIL-STD-810 qualified) |
| Shock | 1000 g, 1 ms half-sine (Survives launch and pyro events) |
| Dimensions | 1.5″ dia × 4.2″ length (Compact for manifold mounting) |
| Pressure Ports | Dual 7/16-20 UNF-2B MS16142 (O-ring boss, leak-proof to 10,000 psi) |
| Certifications | DO-160, MIL-STD-810, ATEX Ex ia optional (Flight & hazardous-area ready) |
Technical Principles and Innovative Values
- Innovation Point 1: True Wet/Wet Dual Redundancy – Two independent Inconel diaphragm sensors share a single body but provide electrically isolated outputs; unlike single-element units, a diaphragm rupture affects only one channel—achieving 100% fault coverage in 2oo3 safety loops.
- Innovation Point 2: Zero Impulse Lines – Direct fluid contact eliminates clogged tubes that cause 70% of offshore DP failures; field data from 2024 Chevron deployments show 8× longer mean time between failures versus seal-type transmitters.
- Innovation Point 3: 16 g Vibration Immunity – Patented bonded-foil strain gauges on matched Inconel diaphragms maintain ±0.05% accuracy at 16 g—surpassing piezoelectric competitors that drift 2% under the same rotorcraft vibration profiles.
- Innovation Point 4: 25,000-Cycle Life at Full Pressure – All-welded construction and stress-relieved diaphragms survive 25,000 full-scale cycles without fatigue, delivering 5× the endurance of 17-4PH stainless designs in hydraulic test rigs.
Application Cases and Industry Value
During flight testing of a new regional jet, hydraulic filter DP sensors were drifting 8% under 12 g wing-vibration, forcing repeated test aborts. Switching to Precision Sensors DP1WC/250 P-16 units restored accuracy to ±0.07% across the envelope, shaving three weeks off certification and saving $4.3 M in aircraft downtime. The dual outputs also fed the health-monitoring system, predicting filter replacement 120 flight hours early.
On a U.S. Navy destroyer modernizing its steering gear, DP1WC/250 P-16 transducers replaced failing piston-type gauges across four hydraulic rams. The all-Inconel construction shrugged off 18 months of saltwater exposure with zero corrosion, while 1000 g shock rating survived live-fire shock trials without recalibration—earning the module a permanent spot on the Navy’s qualified products list.
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