Skip to search Skip to main content Skip to navigation

Call us at 1-888-826-6342

We noticed you are from . Visit your local site for regional offers and live support.

Configurable, High Accuracy Pressure Transducers

880 to 1,100 mbar, Barometric, 4 to 20 mA, 1/4" BSPP Male, Cable, (-49 to 240 °F)


Item# PXM409-880HBI

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $1,155.58
10-24 $1,097.80
25-49 $1,074.69
50-99 $1,028.47
100+ $1,005.35

In stock

Lead Time (If not in stock): 6 weeks
880 to 1,100 mbar, Barometric, 4 to 20 mA, 1/4" BSPP Male, Cable, (-49 to 240 °F) PXM409-880HBI PXM409-880HBI
  • Fast Response Time
  • High ±0.08% BSL Accuracy
  • High Precision Performance

PXM409-880HBI Model Options

View all models

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.

    loading all models
    loading all reviews
    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
    Rated 5 out of 5 by from Great product Great product. Works well. Software is simple and easy.
    Date published: 2021-05-12
    Rated 5 out of 5 by from Precise, repeatable, and easy to use These sensors replaced some older models that weren't rated for the pressure in my application. The new ones seem very reliable and the sensor-to-sensor variation between the two that I bought is much smaller than it was for the old ones.
    Date published: 2020-10-06
    • y_2024, m_7, d_24, h_7
    • bvseo_bulk, prod_bvrr, vn_bulk_3.0.42
    • cp_2, bvpage2n
    • co_hasreviews, tv_0, tr_15
    • loc_en_US, sid_PXM409-880HBI, prod, sort_[SortEntry(order=HELPFULNESS, direction=DESCENDING), SortEntry(order=POSITIVE_FEEDBACK, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
    • clientName_omega
    • bvseo_sdk, java_sdk, bvseo-4.0.0
    • CLOUD, getReviews, 8ms
    loading all QA

    I would like to purchase the Item# PX429-001GI, which shows a pressure range of 0-1 psi. How can I determine the resolution (ie x.xxxx psi) for the pressure reading that I will be able to get from the transducer?

    Asked by: Briananana
    This would depend on how small of a signal change the instrumentation you are using to read the signal can detect.
    Answered by: Applicatrions Engineer JK
    Date published: 2023-05-19

    Are 2-D or 3-D CAD drawings available for the PX459-030AI pressure sensor?

    Asked by: NickEng
    There are no CAD drawings currently available for the PX459 pressure transducers
    Answered by: Applications Engineer JK
    Date published: 2023-02-16

    Can you place these pressure transducers in an ultrasonic bath?

    Asked by: kevin8124
    No. These sensors are not designed to be submersible
    Answered by: Applications Engineer JK
    Date published: 2023-09-07

    What is the average pressure drop across one of these transducers?

    Asked by: Ingenia
    There is no pressure drop rating for this sensor.
    Answered by: Applicatrions Engineer JK
    Date published: 2023-06-13

    What is the difference between the PX409-030AI-EH and PX409-030AI Models?

    Asked by: Maxx
    Maxx, the -EH models have a 0.05% BFSL static pressure accuracy, whereas the models without -EH will have a 0.08% BFSL accuracy.
    Answered by: SAE d
    Date published: 2023-10-11

    I'm trying to locate the free software that accompanies this product, could you please provide the link?

    Asked by: Joe_
    Hello, and thanks for connecting with us. The software icon, for the free software download, is located in under the bullet points (before the Description copy) on the product page Please contact our Tech Support if have any further questions.
    Answered by: Jane
    Date published: 2019-10-09

    I have PX409-050A5V, what is the transfer function y=mx+b of Pressure vs Voltage output?

    Asked by: DannyP
    Thank you for your inquiry, the information you're requesting will be located on the certificate of calibration.
    Answered by: rkent
    Date published: 2022-04-08

    We have purchased pressure transducer model PX409-050G5V and process meter model DP25B-E. I have the User's Guide for DP25B-E meter, which diagram in 3.4 Connecting Sensor Inputs, should I use to wire up the transducer to the meter?

    Asked by: Tony54
    The PX409-050G5V is a 3-Wire DC Voltage Output sensor. You should use Fig. 3-6 to wire the sensor to the DP25B-E. The DP25B-E S1 DIP Switches should be set for a unipolar 0 to 10VDC Input range and 12VDC Excitation power. The Red wire connects to Terminal#2. The Black wire connects to Terminal#1. The White wire connects to Terminal#6. A jumper wire must also be installed between Terminals #1 and #7
    Answered by: JK Applications Engineer
    Date published: 2024-06-17

    It says that this sensor is recommended to be calibrated once a year, is the calibration procedure included with the sensor, or is calibration handled by a third party organization?

    Asked by: John96
    Thank you for your inquiry, we do not include a calibration procedure, however we do offer calibration services.
    Answered by: rkent
    Date published: 2021-12-09

    What is the recommended calibration frequency for these pressure transducers?

    Asked by: btorrec
    The NIST traceable calibration report shipped with the sensor is valid for 1 year after the sensor ships from Omega. We recommend recalibration once a year calibration cycle.
    Answered by: Applicatrions Engineer JK
    Date published: 2021-04-27

    I'm trying to locate the free software that is advertised for this product, could you please provide the link?

    Asked by: UnderPressure
    Thanks for being an Omega customer. The free software is available here for this product:
    Answered by: Jane
    Date published: 2021-10-25

    Will MMDDU2.5V10P4C5T1A3, listed as uni-directional differential pressure, 0-2.5 psi, read vacuum if the low pressure port is connected to the vacuum process and the high pressure port open to atmosphere?

    Asked by: Ed5280
    Yes it will. You will see an increase if the 0 to 10VDC output signal if a 0 to -2.5 PSI is applied to the Low port
    Answered by: Applications Engineer JK
    Date published: 2022-03-21

    I have a PX409-3.5KGUSBH model transducer that currently reads absolute pressure. Can I calibrate the transducer in house to read relative gauge pressure instead?

    Asked by: aaron1230
    Thank you for your inquiry While the construction of a gauge or absolute sensor is fundamentally different, in this case where your sensor has a range of 3,500 psi A is so large it should be fine. This issue is that an absolute sensor has no way to react to changes in atmospheric pressure like a gauge sensor does. The typical worst-case limits in atmospheric pressure changes (if you don't change your elevation) are between 13.5 – 15.0 psi, or about 1.5 psi, this is only (1.5/3500*100) = 0.04% FS change for the sensor, smaller than the error band! You can safely ignore atmospheric pressure changes for this device and offset your device to represent a gauge pressure reading. hope this was helpful?
    Answered by: application engineer je
    Date published: 2022-08-03

    We have pressure transducer model number PX409-050A10V, for which we'd like to know its leakage specs and/or hermeticity rating... is that data available please?

    Asked by: Scottie
    Thank you for your inquire Overpressure Absolute Pressure: 5 psia: 6 times span 2.5 psia to 1000 psia: 4 times span 1500 to 5000 psia: 10,000 psi maximum Secondary Containment Gage/Diff/Vac/Compound: 10 inH2O to 5 psi: To 1000 psi 15 to 1000 psi: To 3000 psi 1500 to 5000 psi: To 10,000 ps
    Answered by: application engineer je
    Date published: 2022-05-19

    is the USB pressure sensor communication documented so it can be used with a language like LabVIEW? i would expect it shows up as a serial port and has a communication protocol to read values.

    Asked by: VSI_
    Thank you for your inquiry, Omega doesn’t support LabVIEW, but customers have told us they use our USBH sensors with LabVIEW : The easy-to-use ASCII data protocol of the USBH sensors can be handled with a standard LabVIEW VI like: Basic Serial Write and (While Omega gladly provides support for our .NET API, we cannot provide support for implementation as a part of LabVIEW). ). If you have any additional questions please contact our customer support department.
    Answered by: rkent
    Date published: 2022-04-15

    What gauge of wire is used in the 409 series transducer that is prewired? They look to be stranded wires and looking for the gauge / size.

    Asked by: CuriousUser409
    The wire size of PX409 cable is 24 AWG.
    Answered by: Raouf
    Date published: 2024-01-26

    I thought the sensor will come with a USB plug cable, but it doesn't. How should I connect the cable to a USB plug? What kind of USB plug should I get for it?

    Asked by: Anonymous
    There are two versions of the PX409 Pressure Transducers. One version as an analog output of millivolts, Voltage or Current. The other version has a high speed USB output. It appears you have the analog output version with would not have a USB connect on it. You would need to purchase a new PX409 with the part number ending in USBH. This unit has an attached cable with the USB connection on the end
    Answered by: Applicatrions Engineer JK
    Date published: 2021-05-07

    Is there an interface document for available to guide customer developed software deisgn to interface with these sensors over a USB connection to a Linux microPC?

    Asked by: NASA Life Support
    There is no documentation available to guide you in software design for this device.
    Answered by: Applications Engineer JK
    Date published: 2023-04-06

    Can these be used in helium systems?

    Asked by: Greg2
    All the parts of the PX409 series coming in contact with the media (wetted parts) are all 316 Stainless Steel. According to published chemical compatibility charts 316 SS is compatible with Helium
    Answered by: Applicatrions Engineer JK
    Date published: 2023-03-31

    The PX409 spec sheet has a temp. comp. range of -29 to 85°C. It has a graph that shows the thermal affect in the compensated range. The thermal affect is greater than the accuracy of 0.08%. How must thermal affect be factored into the accuracy?

    Asked by: ben06
    Thank you for your inquiry. Please contact us directly at or 1-800-826-6342 to discuss this question.
    Answered by: Applications Engineer Jk
    Date published: 2023-03-07

    What is the HSN (Harmonized System Nomenclature) code for the PX409-015CGUSBH and PX409-015GUSBH sensors?

    Asked by: Klaus
    Thank you for your inquiry, please contact us directly to obtain the HSN number
    Answered by: rkent
    Date published: 2022-10-14

    Do you have documentation that describes the serial commands for the RS-485 interface (or the modbus registers)?

    Asked by: ABH33
    Thank you for your inquiry, we do offer a quick start manual for the RS485 sensors. This document can be found in the product manual section of our website ( PX409-485 and PXM409-485) if you require additional information please contact one of our Pressure engineers
    Answered by: rkent
    Date published: 2023-12-20

    Hello, we need to measure up to 20 Bar pressure absolute. You offer a 17.5 Bar and 30 Bar option. Would the 17.5 Bar sensor report up to 20 Bar, and without causing damage?

    Asked by: ZebraTech
    Hello, Thank you for contacting Omega Engineering. If you want to measure 20 bar absolute you should not use the 17.5 Bar absolute unit, you may damage the diaphragm. Please go with the 30 bar absolute model. Thank you.
    Answered by: SAE d
    Date published: 2019-10-11

    What is the ambient storage temperature of this device? Is it the same or similar to the operating temperature?

    Asked by: Maxx
    These units have been tested to withstand an operating temperature of -49 to 240 Fahrenheit but not for prolonged periods. We do not have data on how the sensor will be affected if you store these transducers under those extreme conditions for longer periods of time.
    Answered by: SAE d
    Date published: 2023-10-11

    What is the weight for part# PX459-100GI

    Asked by: ErJav
    Thank you for your inquiry, this unit weighs less than 2 pounds
    Answered by: rkent
    Date published: 2022-11-01

    I need to get accuracy and range on this. Can you please help

    Asked by: Xochiltet
    The three available accuracy ranges these sensors are 0.03%,0.05% & 0.08%. Accuracy is based on the full scale range of the sensor. Available pressure ranges from a low range of 0 to 10"wc up to 0 to 7500 PSI
    Answered by: Applicatrions Engineer JK
    Date published: 2019-11-21

    I'm trying to locate the free software that is advertised for this product, could you please provide the link?

    Asked by: Joe_
    Thanks for your question. The free software is available here for this product:
    Answered by: Jane
    Date published: 2022-02-01

    What do you recommend if we exceed the proof pressure of 300%? Is the equipment still good to use? Would you recommend recalibration?

    Asked by: mike21
    Avoid exceeding the proof pressure rating of the sensor. You will damage the sensing diaphragm of the unit. It will most not be calibratable once damage
    Answered by: Applicatrions Engineer JK
    Date published: 2021-02-09

    I am trying to locate the system requirements for the software.

    Asked by: Jessie
    The system requirements are: An up-to-date Windows 7, SP1; .NET Framework 4.5.2 (part of Microsoft’s automatic updates); USB 2.0 port. (USB 3 also works). Please contact our Tech Support if you need any further assistance.
    Answered by: Jane
    Date published: 2019-05-06

    Would the 0 to 350 mbar range transducer be accurate enough to read a 1/10 of a mbar? We are mostly interested in looking at absolute pressures ~1/10 to 10 mbar.

    Asked by: Astro
    Accuracy specification for this unit is 0.08%. This means your allowable error for the 0 to 350mbar range unit would be +/- 0.28 mbar. This would not be accurate enough for your requirement.
    Answered by: Applicatrions Engineer JK
    Date published: 2019-11-21
    • y_2024, m_7, d_24, h_7CST
    • bvseo_bulk, prod_bvqa, vn_bulk_3.0.42
    • cp_2, bvpage2n
    • co_hasquestionsanswers, tq_48
    • loc_en_US, sid_PXM409-880HBI, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
    • clientName_omega
    • bvseo_sdk, java_sdk, bvseo-4.0.0
    • CLOUD, getContent, 41ms
    Extra mating DIN connector for PX419
    13 In Stock
    Mating connector (sold separately) for PX429S Series
    40 In Stock
    Pressure snubber for air/gaseous media
    0 In Stock
    Pressure snubber for water and light oils
    0 In Stock
    Pressure snubber for viscous liquids
    0 In Stock
    The M12 connectors can be attached to existing sensor or extension cables with a 6 to 8 mm cable diameter in the field by means of screw type connections
    159 In Stock
    5 m (16') PVC cable, straight 4-pin M12 female connector one end, flying leads one end, for all PX359 absolute range and gage ranges >100 psi
    0 In Stock
    M12 Extension Cable, 4 Wire PVC Cable, Right Angled Socket Connector One End and Flying Leads the Other, 5 meters long
    0 In Stock
    6-Digit strain meter with excitation
    0 In Stock
    6-Digit process meter for voltage and current models
    0 In Stock
    4-Digit Meter with excitation for mV/V Models
    3 In Stock
    4-digit precision process meter for use with voltage and current output models
    0 In Stock

    Related Categories

    Save Configuration