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.

The PX309 should not be used to measure hydrogen. Embrittlement will occur.

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?

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?

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.

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

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

By "load", I meant electrical load (i.e. resistance value, measured in Ohms). Sorry if that wasn't clear form the question. From another answer stating the max current is 24mA, the max resistance would be 1000 Ohms. Is this correct?

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?

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.

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General Purpose, Stainless Steel Pressure Transducers

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

By &quot;load&quot;, I meant electrical load (i.e. resistance value, measured in Ohms). Sorry if that wasn't clear form the question. From another answer stating the max current is 24mA, the max resistance would be 1000 Ohms. Is this correct?

0 to 100 psi, Gauge, 10 mV/V, M12

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Data Sheet (PDF)

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Item# PX359-100GV

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PX359-100GV Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

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Pressure Range

Pressure Type

Accuracy Value(compensated range)

Output Signal

Electrical Output

Connection/Termination

Additional Features

Accuracy Class

Pressure Port Size

Pressure Port Type

Operating Temperature Range

Specs

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

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
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)

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Reviews

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

Manuals & Downloads

Data Sheet (1)

PX309_spec

Compliance Certificates (3)

Articles (3)

Questions & Answers

Hey, Our lab is currently using PX209-015A5V, and we are going to purchase the same one. But I just found the PX209 is not available, and I found PX309-015A5V, could you please tell me the difference between them? Thanks, Lei

Asked by: Leiii

The difference is the PX209 Series sensors wetted parts consist of stainless steel, borosilicate glass, silicon nitride & epoxy. The PX309 Series sensors wetted parts are all stainless steel. The PX309 would be the direct replacement for the PX209

Answered by: JK Applications Engineer

Date published: 2024-03-18

Can it be exposed to vacuum? I'm going to measure the positive pressure inside a sealed box when it's filled with inert gas. But the box will also be pumped to vacuum sometimes (pressure will be measured by other gauges). Will this transducer be damaged?

Asked by: wanglikun08

Yes the PX309 Absolute reference can be used inside a vacuum chamber

Answered by: Applicatrions Engineer JK

Date published: 2019-11-20

What is the resolution of PX309-100G5V? I do not need the accuracy value which is 0.25%. I need the resolution. The smallest pressure change that can be detectable in the sensor and how much output voltage can vary for the smallest change.

Asked by: RAJNe

Resolution really depends on how small of a signal change the instrument you are using to read the signal can resolve.

Answered by: Applicatrions Engineer JK

Date published: 2023-02-16

Is the PX309/329 series compatible with measuring air conditioning system refrigerant pressures (R134a)?

Asked by: TEng1

Yes it is. All wetted parts on the PX309 Series pressure transducers are either 17-4PH or 316 Stainless Steel

Answered by: Applicatrions Engineer JK

Date published: 2020-08-14

Would this unit be able to read water pressure up to the pressure ranges stated as long as the wiring and controls were kept waterproof?

Asked by: azeringue27

Yes it would. The wetted parts of the process connection are all stainless steel. The pressure media can either be a gas or liquid as long as it's compatible with stainless steel. The body and cable of the sensor have an IP65 environmental rating so they can tolerate dust ingress and moderate water spray. The sensor would not handle complete submersion in water.

Answered by: JK Applications Engineer

Date published: 2024-04-05

How do I I calibrate PX319-300A?

Asked by: Brad125

Thank you for reaching out to Omega with your question. The pressure transducer you have , has a 300 psia range with an analog output. Typically it will be 4-20 mA/ amplified voltage or mV/V. Typically you would use a pressure calibrator to simulate known pressures, in your case 0 psia at no load and 300 psia at full pressure then you will measure the analog output from the pressure transducer. The output will have to be trimmed so that it meets the 0.25 % FS accuracy specification listed on the specification sheet. (Note that this unit does not come with span/ zero adjustment pots) We suggest sending the unit back to the factory for recalibration one year after installation of the unit. Thank you.

Answered by: SAE DVJ

Date published: 2019-07-23

Does the PX309 or PX359-005GI have adjustable zero and span pots? Also, there was a question earlier about IP65 rating for the M12 connector - where the M12 connector and cable do not maintain IP65 rating - is this the same for the PX309 cable?

Asked by: KC18

There are no zero and span adjustments on any of the variants of the PX309 Series. The PX309 has a permanently attached cable. The IP65 rating is maintained on the PX309

Answered by: JK Applications Engineer

Date published: 2024-03-01