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General Purpose, Stainless Steel Pressure Transducers

0 to 15 psi, Absolute , 4 to 20 mA, Cable


Item# PX309-015AI

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 C$524.49
10-24 C$498.27
25-49 C$487.78
50-99 C$466.80
100+ C$456.31

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Lead Time (If not in stock): 6 Days
0 to 15 psi, Absolute , 4 to 20 mA, Cable PX309-015AI PX309-015AI
  • 1, 2 & 5 psi Low Pressure Ranges!
  • All Stainless Steel Construction
  • Gage, Absolute, Compound Gage or Vacuum Pressure
  • Rugged Solid State Design

PX309-015AI Model Options

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Pressure Range
Pressure Type
Accuracy Value(compensated range)
Output Signal
Electrical Output
Additional Features
Accuracy Class
Pressure Port Size
Pressure Port Type
Operating Temperature Range

OMEGA’s PX309 Series Stainless Steel Pressure transducers below 100 psi use a high accuracy silicon sensor protected by an oil-filled stainless steel diaphragm. Units 100 psi and above use silicon strain gages molecularly bonded to the stainless steel diaphragm.

We provide a complete range of services—from product inception, through design and prototypes, to manufacturing and testing. Our application engineers work closely with our customers to customize, design or create entirely new products. Call us—whether you’re an OEM, manufacturer, or end user.

Link to Pressure Transducer Installation Article

The PX309 is also available in Metric configurations; please see the PXM309 for complete details, or contact our Pressure department for more information.

Common Specifications
Ranges: -15 to 50 psig, 0 to 1000 psia, 100 to 10,000 psig
Accuracy (Combined Linearity, Hysteresis and Repeatability): ±0.25% BSL, max
Minimum Resistance Between Transducer Body and Any Wire: 1M Ω @ 25 Vdc
Calibration: In vertical direction with fitting down,positive outputs only
Pressure Cycles: 10 million, minimum
Pressure Overload: -15 to 50 psig and 0 to 1000 psia: 3 times rated pressure or 20 psi whichever is greater, 100 to 10,000 psig: 2 times rated pressure
Burst Pressure: -15 to 50 psig and 0 to 1000 psia: 4 times rated pressure or 25 psi whichever is greater, 100 to 10,000 psig: 5 times rated pressure
Long Term Stability (1 Year): ±0.25% of FS, typical
Operating Temperature: -40 to 85°C (-40 to 185°F)
Pressure Port: ¼-18 MNPT
Pressure Port Material: -15 to 50 psig and 0 to 1000 psia: 316 SS, 100 to 10,000 psig: SS 316 or 17-4
0 to 500 psi: may contain HNBR o-ring in wetted pressure port assembly
Bandwidth: DC to 1 kHz (typical)
CE: Compliant
Shock: 50 g, 11 ms half-sine
Vibration: ±20 g
Response Time: <1 millisecond
    PX309: 154 g (5.4 oz)
    PX319/329/359: 100 g (3.5 oz)
IP Rating: IP65

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Rated 1 out of 5 by from Untrustworthy calibrations Faked calibration certificate (again). Claims to have been calibrated to 10,000psi using calibration equipment that will go to only 6,000psi
Date published: 2024-04-13
Rated 2 out of 5 by from Word of Caution The product performance was great, but there is a major design flaw. The cable connection option has the cable connected to the body by a nut that if loosened and taken off will break the unit. Whereas the PX409 series differential transducer instead does not have this problem, it has a sealed connection that doesn't allow you to break the unit so easily. The reason I was attempting to take the nut off in the first place was because it was loose and the unit was dunked under water for cleaning so I was trying to make sure the unit would dry out fully before supplying power to the transducer.
Date published: 2021-04-16
Rated 4 out of 5 by from compact and reliable Have purchased several of these transducers over the last 10 years and do not recall ever having to replace one due to failure. I usually get the 319 series and my only complaint is that there is no key on the connector to simplify pin alignment. They are also offered a wide range of pressure ratings.
Date published: 2019-04-04
Rated 5 out of 5 by from Reliable Quality Sensor Great item. Easy to set up and use. Used in compressed air and boiler system.
Date published: 2024-07-12
Rated 5 out of 5 by from Good experience using this for experiments Easy to use and incorporate into our setup for research
Date published: 2024-07-09
Rated 5 out of 5 by from also no surprises Works as expected and easy to integrate with our NI DAQ system
Date published: 2024-06-04
Rated 5 out of 5 by from no surprises. Works as expected and, easy set up with our NI DAQ monitoring water pressures for a multi-function heatpump-waterheater.
Date published: 2024-06-04
Rated 5 out of 5 by from Great Low-Pressure Transducer Works great, performs exactly as expected for my application.
Date published: 2024-05-28
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loading all QA

Where can I find the transfer function for a PX309-100A10V? Is it included in the calibration documentation or do I have to generate it myself?

Asked by: dtorgersen
I am reading voltages off the sensor and using custom software to output a pressure. where do i find the equation that converts the sensor output voltage to pressure?
Answered by: dtorgersen
Date published: 2023-11-16

Is there a manual for installing and programming the PX309-5KG5V? I tried accessing the site, but it wasn't working. There also isn't a user manual on the product site. I am trying to connect it to a Arduino Uno and a 12V battery.

Asked by: nbosio1001
The PX309-5KG5V is simply an analog output sensor generating a 0 to 5VDC signal over it's 0 to 5000 PSI pressure range. There is no programming necessary and there is no manual. A wiring is available on both the specification sheet on our website and the calibration report that is shipped with the unit. This is a 3 wire device and wiring is as follows. Red wire should connect to the positive(+) side of our 12V battery. Black wire should connected to both the negative (-) side of your 12V battery and the negative (-) or low input of your readout device. White wire should connect to the positive (+) or high input of your readout device. We would have not have any info on how specifically you would connect this to a Arduino Uno
Answered by: Applicatrions Engineer JK
Date published: 2022-11-04

What is the maximum load that can be used in series with the PX309-1KA (4-20mA output)?

Asked by: ExampleName
Thank you for your inquire. over pressure 0 to 1000 psia: 3 times rated Burst Pressure 0 to 1000 psia: 4 times rated pressure
Answered by: application engineer je
Date published: 2022-06-14

Does Omega PX309 read above the +15 PSI maximum pressure with less accuracy or the15 PSI is the maximum positive pressure that can read? and what will happen if my sample produces more pressure than the specified limit, is that going to damage the sensor?

Asked by: ZARA
Thank you for your inquiry, the PX309 15PSI has a Pressure Overload rating of 3 times rated pressure. The accuracy of the unit is based on zero to full scale, we do not guarantee specifications over the rated pressure.
Answered by: rkent
Date published: 2022-09-09

Are there any limitations for using the PX309 series transmitters under constant exposure to hydrogen gas (pressures up to 3k psi)? (hydrogen embrittlement specifically) Thank you.

Asked by: alphaTech
The PX309 should not be used to measure hydrogen. Embrittlement will occur.
Answered by: Applicatrions Engineer JK
Date published: 2020-10-09

How do I know if my PX359-500A5V contains HNBR o-ring in the wetted pressure port assembly?

Asked by: Myke
We have several suppliers for the 0 to 500 psi sensing element used in the PX309 Series pressure transducer. One of them inadvertently supplied elements with the HNBR O-ring. Unfortunately there no way to identify which units were built use this element without physically cutting unit open the unit which would basically destroy it.
Answered by: JK Applications Engineer
Date published: 2024-07-11

What is the inside diameter and depth of the sensing port within the Male 1/4 NPT port on model PX309-100A10V ?

Asked by: Brendon
Thanks for your inquiry. Would only have available a approximation. 1/8 of an inch The depth would fluctuate Hope this was helpful.
Answered by: application engineer je
Date published: 2021-04-30

Will PX309-100G5V work with Both Liquid and gas environments?

Asked by: Prem N
Hello, Thank you for contacting Omega Engineering. The PX309 is compatible with both gases and liquids. You will however have to make sure your media is compatible with the wetted parts.
Answered by: SAE d
Date published: 2023-02-22
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