Overview
The Omega PX419-2.5DWU10V is a 0-2.5 psid wet/wet differential pressure transducer that measures the difference between two liquid or gas media applied to its high and low ports, with both sides isolated by 316L stainless diaphragms for true wet/wet service. Built on Omega's micro-machined piezoresistive silicon core with digital dynamic thermal compensation, it delivers ±0.08% BSL accuracy combining linearity, hysteresis, and repeatability. It outputs a 0-10 Vdc signal and ships with a 5-point NIST-traceable calibration certificate. The serial number and range marking identify the high-pressure port.
Best for
- Filter and strainer monitoring, pump and flow measurement, and hydraulic systems
- Water and wastewater, pneumatic air, pitot-tube and airspeed measurement
- Test benches and industrial, automotive, or aerospace applications needing a wet/wet transducer
- 0-10 Vdc input PLCs, data loggers, and panel meters
Warranty
Backed by Omega's standard 13-month warranty (1-year coverage plus a one-month shipping grace period) against defects in materials and workmanship. ZOT Supply is an authorized Omega distributor offering fast nationwide and international shipping. Each unit ships with its 5-point NIST-traceable calibration certificate.
Key Features
True Wet/Wet Differential
Both high and low ports accept liquid or gas media, each isolated by a 316L stainless diaphragm, for direct differential measurement across wet processes.
0.08% BSL Accuracy
Linearity, hysteresis, and repeatability combined into a single ±0.08% best-straight-line specification on a micro-machined silicon core.
Digital Thermal Compensation
A custom ASIC maps temperature, pressure, and output to dynamically compensate across the compensated range, holding span and zero where competitors drift.
316L Welded Stainless Build
Welded stainless construction with 316L SS wetted parts and secondary containment for rugged, long-life service.
1 Million Cycle Life
Rated for a minimum of one million pressure cycles with ±0.1% FS typical long-term (1-year) stability.
5-Point NIST Calibration
Every transducer ships with a 5-point NIST-traceable calibration certificate documenting its as-shipped accuracy.
Technical Specifications
| Specification | Value |
|---|---|
| Pressure Range | 0-2.5 psid (0-170 mbar) |
| Pressure Type | Differential, Wet/Wet, Uni-Directional |
| Output | Amplified Voltage (0 to 10 Vdc) |
| Supply Voltage | 15 to 30 Vdc @ 10 mA |
| Accuracy | ±0.08% BSL (linearity, hysteresis, repeatability) |
| Long-Term Stability (1-Year) | ±0.1% FS typical |
| Operating Temperature | -45 to 121°C (-49 to 250°F) |
| Compensated Temperature | -17 to 85°C (1 to 185°F) |
| Thermal Effects (Zero / Span) | ±1.00% span over compensated range |
| Proof Pressure (Differential) | 4x range |
| Line / Static Pressure | 500 psi maximum applied to both sides simultaneously |
| Hi-Side Containment | to 1000 psi |
| Pressure Cycles | 1 million minimum |
| Pressure Ports | 1/4-18 NPT Male, each end |
| Wetted Parts | 316L Stainless Steel |
| Environmental Protection | IP65 |
| Response Time / Bandwidth | <1 ms / DC to 1 kHz typical |
| Weight | 200 g (7 oz) maximum |
| Approvals | CE (EN61326-1), RoHS; 5-point NIST-traceable calibration included |
Documentation
Frequently Asked Questions
What does wet/wet differential mean?
Both the high and low pressure ports can be exposed to liquid or gas media, each isolated by a 316L stainless diaphragm, so the transducer reads the difference between two wet lines directly.
How do I identify the high-pressure port?
The serial number and range marking on the body identify the high-pressure port.
What is the maximum line (static) pressure?
Up to 500 psi may be applied to both sides simultaneously without damage.
What is the proof pressure for the 0-2.5 psid range?
The differential proof pressure for this range is 4x range.
Is a mating connector included?
Yes. The mini-DIN version ships with its mating connector included.
- Series:
- PX409-DIF
- Pressure Type:
- Differential Wet/Wet
- Pressure Range:
- 0-2.5 psid
- Output Signal:
- 0-10 Vdc
- Accuracy:
- 0.08% BSL
- Process Connection:
- 1/4-18 NPT Male
- Electrical Termination:
- Mini-DIN
- Environmental Rating:
- IP65
- Wetted Parts:
- 316L SS
- Mounting:
- In-Line Process
