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General Purpose, Stainless Steel Pressure Transducers

0 to 100 psi, Gauge, 4 to 20 mA, Cable

$275.96

Item# PX309-100GI

Volume Discount Schedule

Quantity	Price each
1-4	$275.96
5-9	$262.16
10-24	$256.64
25-49	$245.60
50-99	$240.09
100+	$234.57

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Lead Time ( If not in Stock): 11 weeks

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0 to 100 psi, Gauge, 4 to 20 mA, Cable is rated 4.7 out of 5 by 3.

1, 2 & 5 psi Low Pressure Ranges!
All Stainless Steel Construction
Gage, Absolute, Compound Gage or Vacuum Pressure
Rugged Solid State Design
High Stability, Low Drift
0.25% Static Accuracy
IP65 Protection Class

Data Sheet (PDF)

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Pressure Range

Pressure Type

Accuracy Class

Accuracy Value (compensated range)

Output Signal

Electrical Output

Pressure Port Size

Pressure Port Type

Connection/Termination

Operating Temperature Range

Additional Features

Product Specs

Accuracy Value ±1.0% (5 psig/psia is ±1.5%
Repeatability ±0.25% BSL
Vibration ±20 g
Shock 50 g

Product Details

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: 17-4 PH SS
Bandwidth: DC to 1 kHz (typical)
CE: Compliant
Shock: 50 g, 11 ms half-sine
Vibration: ±20 g
Response Time: <1 millisecond
Weight:
PX309: 154 g (5.4 oz)
PX319/329/359: 100 g (3.5 oz)
IP Rating: IP65

PLEASE REFER TO 'SPECS' FOR ADDITIONAL SPECIFICATIONS FOR EACH OUTPUT (mV, 0 to 5 Vdc and 4 to 20 mA)

All Models

Reviews

Rated 4 out of 5 by under pressure 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 Rick G from Pressure feedback without breaking the bank Over the years I have purchased a number of these PX309-100GI transducers. I am using them at a nursery where they control the speed of 15HP submersible well pumps driven by Vacon VFD's. Pretty well fail safe. on this last one we added a snubber to hopefully extend the life of the transducer given the location.

Date published: 2020-04-22

Rated 5 out of 5 by Leak Testing from Good value transducer I have used many of these transducers and found them a good value. It makes it easy to purchase them and Omega gives a fast delivery. When I need a replacement, I can get them within days.

Date published: 2020-04-09

Questions And Answers

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: Applications Engineer JK

Date published: 2020-10-09

Are FPW-15 or PSR-24 recommended as excitation sources for PX3093KG5V transmitter?

Asked by: alphaTech

Yes, The PX309 will run on any DC voltage between 9 and 30 VDC so either supply will work.

Answered by: Applications Engineer JK

Date published: 2020-10-02

What is the input impedance and output impedance of the PX309?

Asked by: JWeng

We do not provide the input/output impedance for the PX309 0 to 5VDC output units. The impedance can widely vary due to the internal components used in the each sensor.

Answered by: Applications Engineer JK

Date published: 2021-03-04

What is the difference between a compound gauge and absolute gauge?

Asked by: jackie270

The compound gauge are measuring a vacuum or positive pressure relative to the atmospheric pressure. The unit has a vent to atmosphere for the reference. The absolute gauge units measure pressure relative to an internal sealed vacuum reference.

Answered by: Applications Engineer JK

Date published: 2020-07-07

What is the accuracy and repeatability for PX359-100GI and PX319-300G5V? I see conflicting values in the product summary, common specificiations, and the datasheet.

Asked by: Mayub

Combined accuracy of the PX309 Series is 0.25% BSL. This is a root,sum, square calculation of the linearity, hysteresis & repeatability values for this sensor.

Answered by: Applications Engineer JK

Date published: 2020-04-08

Can this transducer be used with a 24Vdc power supply?

Asked by: nrebers

Thank you for contacting Omega Engineering with your question. The PX309 series transducers are available several different output types and not all of them can operate on 24 Vdc. If the model in questions has a 0-5 Vdc, 0-10 Vdc, or 4-20 mA output then yes, they can operate on 24 volts. If it is one with a millivolt output, then the excitation voltage would be 5 or 10 Vdc depending on the pressure range. Please feel free to contact us again if you have any other questions.

Answered by: engineer rf

Date published: 2019-11-19

Is there a manual for installing and programming the PX309-5KG5V? I tried accessing the ftp.omega.com 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: Applications Engineer JK

Date published: 2020-08-15