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Configurable, High Accuracy Pressure Transducers

0 to -15 psi, Vacuum, 4 to 20 mA, 1/4" NPT Male, Cable, (-49 to 240 °F)


Item# PX409-015VI

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $942.36
10-24 $895.24
25-49 $876.39
50-99 $838.70
100+ $819.85

In stock

Lead Time (If not in stock): 6 weeks
0 to -15 psi, Vacuum, 4 to 20 mA, 1/4" NPT Male, Cable, (-49 to 240 °F) PX409-015VI PX409-015VI
  • Fast Response Time
  • High ±0.08% BSL Accuracy
  • High Precision Performance

PX409-015VI 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.

*Highlighted options are not compatible. Please select a different combination or click the CONFIGURE button to build your own.

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

  • Input Resistance 5000 Ω ±20% typical
  • Output Resistance 5000 Ω ±20% typical
  • Shock 50 g
  • Repeatability ±0.08% BSL maximum
  • Vibration 5-2000-5 Hz
  • Wetted Materials 316L Stainless Steel
  • Zero Balance ±0.5% FS typical 1% maximum (1% typical
  • Accuracy Value 0.08% (compound ranges calibrated only in positive direction)

The Most Popular Ranges and Configurations are Stocked for Immediate Delivery. 

OMEGA’S high accuracy PX409 Series Pressure Transducers have a proven record in high-performance commercial and aerospace applications for over 25 years. A full Wheatstone bridge is diffused into a silicon wafer and then micro-machined to exacting standards to produce a silicon sensor that has excellent stability, linearity, repeatability, and excellent long-term stability. At our state-of-the-art facilities, transducers are calibrated using extremely high accuracy equipment, and a 5-point NIST traceable calibration certificate is included with each model. All Stainless Steel wetted parts, welded construction and premium temperature compensation makes transducers suitable for use in tough industrial environments. OMEGA’s free downloadable Software provides advanced data logging capabilities hence add value and flexibility to your transducer performance.

Build/Order/Ship OMEGA’S MM Series Custom Pressure Transducers to meet your pressure sensing requirements:  As a lead pressure transducer manufacturer, Omega has developed a new interactive configuration tool that provides a fast and simple way to build custom transducer suitable for application. MM Series custom transducers allow for over 1-million possible combinations of parameters such as pressure type, range, unit, material, output, accuracy, fitting, temperature compensation range, and electrical termination.  At the end of the process, the Configurator will provide a part number, price and delivery time for the transducer. For more information about Configurator, Options Selection and FAQs. 



PX409 Series Standard Pressure Transducers

PX409 Series 

Hermetically Sealed Gauge (Imperial)

PX409 Series

High Speed USB Output Transducers (Imperial/Metric)

PX409 Series

RS485 Output Transmitters






Pressure Type

Gauge, Absolute
Compound ,Barometric

Sealed Gauge

Gauge, Absolute
Compound ,Barometric

Gauge, Absolute
Compound ,Barometric
Vacuum, Sealed Gauge


0 to 10 Vdc
0 to 5 Vdc
4 to 20 mA
10 mV/V

0 to 10 Vdc
0 to 5 Vdc
4 to 20 mA
10 mV/V


0 to 5 Vdc
4 to 20 mA

Electrical Terminations

M12 Connector

Hermetic Pin Termination

Cable (Std USB Connector Termination)

M12 Connector

Operating Temperature Range

-45 to 121 °C (-49 to 250 °F) or
-45 to 115 °C (-49 to 240 °F)

-45 to 121 °C (-49 to 250 °F) or
-45 to 115 °C (-49 to 240 °F)

-40 to 85 °C (-40 to 185 °F)

-40 to 85 °C (-40 to 185 °F)

Key Features

300% or 400% Proof Pressure
Metric Pressure Ranges

Hermetically Sealed for the Harsh Environments

1000 Reading/Second
Omega’s Free PC Software  for Data Logging and Charting

Up to 640 Readings/Second
Long Distance Transmission
Omega’s Free PC Software   for Data Logging and Charting

Data Sheets

PX409 Gauge-Absolute-Vac-CG-Barometric Pressure
PX409 Hermetically Sealed Gauge Pressure Transducers PX409 High Speed USB Output Pressure Transducers PX409-RS485 Output Pressure Transmitter

* Extra High Accuracy (±0.05% or ±0.03%) Models Available
* Visit Accessories section for compatible Accessories

Some of the most Popular Applications  of Pressure Transducers include: 
  • Measuring inlet, outlet, or system pressure in engine test setup
  • Measuring pressure drops in a line for preventive maintenance
  • Measuring fluid height or level in tanks
  • Measuring a water pipe leak or gas leak and monitoring gas pressure
  • Maintaining pressure in food and beverage lines
  • Sanitary pressure  measurement  in the bio or pharmaceutical industry.
  • For Intrinsically Safe and CSA ratings see model PX509-IS .


    What is the accuracy of the PX409 Series?

    The PX409 Series has a high accuracy of ±0.08% BSL and includes linearity, hysteresis, and repeatability. To obtain their high accuracy and stability, the PX409 Series uses state-of-the-art digital mapping of the temperature, pressure, and output performance of the silicon sensor in conjunction with a custom ASIC to provide dynamic thermal compensation across the temperature and pressure parameters.

    Is the PX409 Series suitable for any liquid and gas applications?

    OMEGA piezoresistive pressure transducers have a proven record in high performance commercial and aerospace applications for over 25 years. The piezoresistive process and the construction of the PX409 Series provides a very rugged transducer with exceptional accuracy, stability, and thermal effects. The PX409 Series is all stainless steel (316 SS) wetted parts. Please ensure the media under measurement is compatible with wetted parts.

    What is the power supply for the PX409 Series?

    The power supply of the PX409 Series depends on the output of the chosen model and power supply fluctuation protection is standard on all models. Please refer to the table below for details.

    Output Model

    Power Supply

    0 to 5 Vdc

    10 to 30 Vdc@10 mA

    0 to 10 Vdc

    15 to 30 Vdc@10 mA

    4 to 20 mA

    9 to 30 Vdc

    10 mV/V

    Ratiometric 5 to 10 Volts DC

    Is the PX409 Series calibrated?

    The Px409 Series are calibrated using extremely high accuracy equipment and a 5-point NIST traceable calibration certificate that is included with each transducer. It is recommended that the sensor be recalibrated once a year. The most popular ranges and configurations are stocked for immediate delivery. All others typically have a very short lead-time.

    How can I install a PX409 Series in a pipe? Does it need a specific orientation (vertical or horizontal)?

    The PX409 Series has a ¼ - 18 NPT male fitting that is threaded into a pipe fitting for installation. There is no specific orientation needed – the unit is calibrated in the vertical direction with fitting down. The sensor is designed to be quickly customized to meet your exacting specifications, often with fast delivery.

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    Rated 5 out of 5 by from Top notch The quality of the signal and the precision are excellent. Also, the build quality is also very good.
    Date published: 2023-02-24
    Rated 5 out of 5 by from Great piece of equipment. Durable and reliable sensor. Arrived fairly quickly. A great choice when precise measurements are required.
    Date published: 2023-09-18
    Rated 5 out of 5 by from Quick Delivery Estimated restocking time of 4 weeks but got it in two! Excellent quality sensor
    Date published: 2023-07-27
    Rated 5 out of 5 by from High accuracy High accuracy and easy to mount it into experimetn
    Date published: 2023-05-01
    Rated 5 out of 5 by from Great Device These are fully functional and very easy to set up and use.
    Date published: 2023-04-20
    Rated 5 out of 5 by from Exactly what I paid for! Transducer is exactly what was expected. Packaging and documentation were perfect as well!
    Date published: 2023-04-01
    Rated 5 out of 5 by from Quick shipping and great product Awesome reliable product and shorter lead times than everyone else in the industry.
    Date published: 2023-02-28
    Date published: 2023-02-27
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    loading all QA

    You can specify the "pressure type" measurement as "gauge" or "vacuum". What exactly does the vacuum pressure type mean? It is the same as absolute pressure?

    Asked by: JoeyH9
    A vacuum-type sensor is like a negative gauge, the signal has a negative scale, meaning the low output will be when the pressure is at zero, and as the pressure DECREASES the signal will INCREASE
    Answered by: Cyrus Grimes
    Date published: 2020-12-16

    Is there an option to add grid lines to the charting area?

    Asked by: Domenic
    There is no option to add grid lines to the charting area.
    Answered by: Application Engineer JK
    Date published: 2021-03-23

    Will MMDDB2.5BIV10P4C5T1A3, listed as bi-directional differential pressure, 0-2.5 psi, read vacuum if the low port is connected to the vacuum process and the high port open to atmosphere? Will it work with both ports across different vacuums?

    Asked by: Ed5280
    If you connect a vacuum to the low and leave the high port open to atmosphere the unit will output 0 to -10VDC if a vacuum id applied to the LOW port. If you apply varying vacuums to both ports the unit will respond with a sign representing the difference between the vacuums applied ranging from -10VDC to +10VDC
    Answered by: Applications Engineer JK
    Date published: 2022-03-21

    What is the resolution limit on this device? I'm interested in your 0-2 bar sensor and what the lowest pressure value it is able to measure accurately.

    Asked by: Ben_
    Resolution would depend on how small of a signal change the instrumentation used to read the 0 to 10VDC output can resolve. The sensor will read from 0 to 2 bar but the lower 10% of the range (0 to 0.2 bar) would end to be less accurate
    Answered by: Application Engineer JK
    Date published: 2022-03-01

    Are the high accuracy transducers rated for use with hydrogen?

    Asked by: jrea98
    We do not recommended using our transducers in a hydrogen application due to embrittlement of the wetted parts when exposed to hydrogen
    Answered by: Application Engineer JK
    Date published: 2022-02-10

    Hi, we have a PX409-16BI transmitter that we are developing a validation procedure for. Stated zero and span tolerances are +/- 0.5% FS typical with a +/- 1% FS maximum. Which should I use for validation? (BSL is not a validation tolerance)

    Asked by: John314
    You would use the +/- 1% FS max
    Answered by: Application Engineer JK
    Date published: 2020-06-12

    When you say accuracy, are you referring to the resolution or the measurement, or the actual measurement accuracy? What are the respective values of each?

    Asked by: Julian
    Thank you for contacting Omega. The PX409 is a full analog path sensor, meaning it's resolution is essentially infinite. The accuracy we specify details the uncertainty of the output. We specify the combined uncertainty contributed by non-linearity, repeatability, and histories.
    Answered by: Jane
    Date published: 2019-02-12

    I have to return a couple of these pressure sensors to a client overseas (UK). But before my company can ship them, we need to know the ECCN export number. Please supply the ECCN for these items... PXM419-070BA10V. Thank you.

    Asked by: ziggy19
    Thank you for contacting Omega engineering, for export related question kindly send an email to Thank you.
    Answered by: SAE DVJ
    Date published: 2019-11-23
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