Overview
The Omega PX429-500GI is a high-accuracy 0 psi to 500 psi gage pressure transducer built on Omega's micro-machined piezoresistive silicon platform, delivering best-in-class accuracy that combines linearity, hysteresis, and repeatability. A custom ASIC applies digital dynamic thermal compensation across the full temperature and pressure range, so the transducer holds its accuracy where lower-grade devices drift. It outputs a 4-20 mA signal and ships with a 5-point NIST-traceable calibration certificate.
Best for
- Aerospace, automotive, and test-bench measurement requiring reference-grade accuracy
- Industrial process and equipment OEM applications with wide ambient temperature swings
- 4-20 mA input PLCs, data loggers, and panel meters
- Rugged, all-stainless installations in harsh industrial environments
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
0.08% BSL Accuracy
Linearity, hysteresis, and repeatability combined into a single ±0.08% best-straight-line specification, verified on 100% of units.
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.
5-Point NIST Calibration
Every transducer ships with a 5-point NIST-traceable calibration certificate documenting its as-shipped accuracy.
Ruggedized Silicon Core
Piezoresistive silicon in a glass-to-metal sealed chamber with a 316 SS diaphragm and secondary fluid containment in the event of a diaphragm rupture.
Protected Electronics
Reverse-polarity, EMC, and power-supply fluctuation protection are standard, with high proof-pressure margin on the sensing element.
All-Stainless Construction
316 SS wetted parts and welded stainless construction for wet and harsh industrial environments.
Technical Specifications
| Specification | Value |
|---|---|
| Pressure Range | 0 psi to 500 psi |
| Pressure Type | Gage |
| Output | Current Loop (4 to 20 mA) |
| Accuracy | ±0.08% BSL (linearity, hysteresis, repeatability) |
| Long-Term Stability (1-Year) | ±0.1% FS typical |
| Operating Temperature | -45 to 115°C (-49 to 240°F) |
| Proof Pressure | High proof-pressure margin (see datasheet by range) |
| Process Connection | 1/4-18 NPT Male |
| Electrical Termination | Twist-Lock (PT06 style) |
| Wetted Parts | 316 Stainless Steel |
| Environmental Protection | IP65 |
| Response Time / Bandwidth | <1 ms / DC to 1 kHz typical |
| Approvals | CE, RoHS; 5-point NIST-traceable calibration included |
Documentation
Frequently Asked Questions
What does the accuracy specification include?
It combines linearity, hysteresis, and repeatability into a single best-straight-line figure, so it reflects total measurement error rather than a single contributor.
Does this transducer come calibrated?
Yes. Every unit ships with a 5-point NIST-traceable calibration certificate documenting its as-shipped accuracy.
What is the gage pressure reference?
This model references ambient atmospheric pressure through a vent, reading pressure relative to the surrounding atmosphere.
Does it need a mating connector?
Yes, this termination uses a separate mating connector (PT06F10-6S twist-lock connector), ordered separately.
Can it handle wet or harsh environments?
Yes. The housing is rated IP65 and all wetted parts are 316 stainless steel.
- Brand:
- Omega
- Series:
- PX429
- Pressure Type:
- Gage
- Pressure Range:
- 0-500 psi
- Output Signal:
- 4-20 mA
- Accuracy:
- 0.08% BSL
- Process Connection:
- 1/4 in Male NPT
- Electrical Connection:
- Twist-Lock
- Environmental Rating:
- IP65
- Wetted Material:
- 316L SS
