Alpha & Omega Semiconductor

PX409 - 0.08% High Accuracy Pressure Transducer | Omega Engineering

部品番号: PX409 ✓ 生産中
在庫あり 1〜3営業日以内に発送
開始価格 $705 USD / 個
MOQ: 1 |
価格更新日: 2026-10-13
ボリューム価格
数量 単価 小計
1 $895 $895.00
10 $850 $8,500.00
50 $805 $40,250.00
100 $760 $76,000.00
500 $705 $352,500.00
ℹ️ すべての価格はUSDです

PX409 概要

The Omega Engineering PX409 is a configurable, high-accuracy pressure transducer that delivers ±0.08% accuracy with a 5-point NIST-traceable calibration certificate included with every unit. Built around a micro-machined silicon strain-gauge sensing element with all-stainless-steel wetted parts and welded construction, the PX409 series supports gauge, absolute, vacuum, differential, and compound pressure ranges from inches of water up to 10,000 PSI. Standard output options include 4-20 mA, 0-5 VDC, 0-10 VDC, ±10 VDC, USB, and RS-485, suiting both legacy analog loops and modern digital data-acquisition systems.

A pressure transducer is a sensor that converts an applied fluid or gas pressure into a proportional electrical signal, typically voltage or current, for monitoring, control, or recording purposes. As a category, pressure transducers sit inside the broader hierarchy of pressure sensors -> sensors -> instrumentation -> industrial automation. Within that taxonomy, the PX409 is positioned as a high-accuracy, industrial-grade transmitter engineered for demanding test-stand, hydraulic, and process-control environments where traceability and long-term stability outweigh low-cost priorities.

Key features include ±0.08% Best-Fit-Straight-Line (BFSL) accuracy, ±0.03% linearity option, all-stainless-steel 17-4 PH or 316L wetted parts, welded hermetic sealing, 3X full-scale burst pressure rating, and premium temperature compensation across a -20 °C to +85 °C operating range. The unit ships with a NIST-traceable calibration certificate documenting five calibration points across the pressure range, supporting ISO 17025 and calibration-quality requirements in regulated industries.

Architecturally, the PX409 uses a micro-machined silicon diaphragm with a piezoresistive Wheatstone bridge. Onboard signal conditioning provides amplified, temperature-compensated output, eliminating the need for external instrumentation amplifiers in most applications. The robust mechanical design uses a 1/4" NPT male process connection as standard, with alternate fittings (1/2" NPT, 1/4" BSP, 7/16-20, SAE, or compression fittings) available via the factory configurator.

Typical applications include hydraulic and pneumatic system monitoring, test and measurement instrumentation, fuel-pressure mapping on engine dynamometers, tank-level hydrostatic measurement, refrigeration and HVAC pressure monitoring, pharmaceutical and food-processing line verification, and cleanroom / laboratory gas-line verification. The 4-20 mA option is particularly suited to long cable runs and noisy industrial environments where voltage signals would otherwise suffer degradation.

When integrating the PX409, observe the rated overpressure and burst specifications carefully. Hydraulic spikes and water-hammer events can exceed the rated pressure even when steady-state pressure is within range. For differential or vacuum models, keep the low-pressure side clean and dry; moisture ingestion is the most common service-life failure mode.

This page synthesizes distributor pricing, datasheet specifications, drop-in alternative part options from the same Omega family, and practical installation guidance not consolidated on the manufacturer product page.

ドロップイン代替品: PX409 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。

クイック比較ツール — 並列比較する代替部品を選択:

PX409-100GI

✅ ドロップイン
📦 1/4" NPT process fitting, 4-20 mA output
100 PSI gauge range, 4-20 mA output, same datasheet family

📋 参考代替品(カタログ未掲載)

PX409-750GI

✅ ドロップイン
📦 1/4" NPT process fitting, 4-20 mA output
750 PSI gauge range, 4-20 mA output, otherwise identical to PX409 baseline build

📋 参考代替品(カタログ未掲載)

PX409-001VI

✅ ドロップイン
📦 1/4" NPT process fitting, voltage output
Vacuum range, voltage output option (0-5 VDC), same sensor family

📋 参考代替品(カタログ未掲載)

PX409-32HB5V

✅ ドロップイン
📦 1/4" NPT process fitting, 0-5 VDC output
Different pressure range (32 inH2O), 0-5 VDC output instead of 4-20 mA

📋 参考代替品(カタログ未掲載)

PX409-USBH

✅ ドロップイン
📦 1/4" NPT process fitting, USB output
USB digital output instead of analog 4-20 mA; same sensing element

📋 参考代替品(カタログ未掲載)

PX409 最大定格&電気的特性

Pressure Type Gauge / Absolute / Vacuum / Differential / Compound (configurable)
Accuracy (BFSL) ±0.08% of full scale
Linearity (optional) ±0.03% of full scale
Pressure Range Inches of water to 10,000 PSI (model-dependent)
Output Options 4-20 mA / 0-5 VDC / 0-10 VDC / ±10 VDC / USB / RS-485
Calibration Certificate 5-point NIST traceable (included)
Process Connection 1/4" NPT male (standard)
Wetted Materials 17-4 PH / 316L stainless steel
動作温度 -20 °C to +85 °C
Compensated Temperature -20 °C to +85 °C (premium compensation)
Burst Pressure Rating 3x full scale (minimum)
Construction Welded, hermetically sealed
Sensing Technology Micro-machined silicon strain gauge (piezoresistive)
Electrical Connection Flying lead / cable / M12 connector (model-dependent)
実装スタイル Inline process mount
RoHS ステータス Compliant

PX409 standard ピン配置ガイド

PX409 (standard パッケージ) のピン配置。 ピン番号、機能、接続図はメーカーのデータシートで定義されています。正確なフットプリントとはんだ付けのガイドラインについては、データシートを参照してください。

PX409 の standard パッケージピン配置図

詳細なピン配置データはありません: PX409.

詳細は データシート をご参照ください。

主な用途

PX409 の用途: 6 件s: Hydraulic System Pressure Monitoring, Test and Measurement Instrumentation, HVAC and Refrigeration Pressure Monitoring, Engine Dynamometer Fuel and Oil Pressure Mapping, Pharmaceutical and Food-Process Line Pressure Verification, Cleanroom and Laboratory Gas-Line Verification.

🏭

Hydraulic System Pressure Monitoring

The PX409 is purpose-built for continuous hydraulic-system pressure monitoring on industrial machinery, test stands, and mobile-equipment skids. Its 3X full-scale burst pressure rating provides a robust safety margin against transient water-hammer spikes typical of hydraulic lines, and the all-stainless-steel 17-4 PH / 316L wetted path tolerates petroleum-based hydraulic fluids, water-glycol, and most synthetic lubricants. The 4-20 mA two-wire current-loop output option is preferred for hydraulic installations because the current signal rejects induced EMI across long cable trays to PLC analog input modules. With ±0.08% BFSL accuracy and the included 5-point NIST-traceable calibration certificate, the PX409 supports ISO 17025 auditability in regulated manufacturing environments and gives test engineers a calibrated, traceable reading on every cycle.

🧪

Test and Measurement Instrumentation

The PX409 is widely deployed in laboratory and production test-and-measurement stands where its ±0.08% accuracy and bundled 5-point NIST-traceable calibration certificate provide the documentation required by quality systems. The optional ±0.03% linearity variant goes further to support high-resolution sweep testing of pressure regulators, flow-control valves, and burst-test fixtures. The series spans from inches of water for low-pressure airflow characterization up to 10,000 PSI for high-pressure component qualification; one sensor family covers the entire test-bench pressure range, simplifying purchasing and standardization. The USB-output high-speed PX409-USBH variant connects directly to a PC with bundled .NET drivers, enabling automated data acquisition without a separate signal conditioner or DAQ chassis.

💡

HVAC and Refrigeration Pressure Monitoring

In HVAC and commercial refrigeration systems, the PX409 reliably monitors refrigerant and air-handling pressures across the full -20 °C to +85 °C compensated temperature range of the sensor. Low-pressure inches-of-water gauge ranges support cleanroom static-pressure verification and duct air-flow balance checks, while higher-pressure ranges cover refrigerant suction and discharge lines. The stainless-steel welded construction tolerates common refrigerants including R-410A, R-134a, and R-22 within compatibility limits confirmed via the manufacturer's chemical compatibility chart. Maintenance crews benefit from the 4-20 mA option for distributed rooftop equipment where long analog cable runs feed back to a building-management-system controller.

🚗

Engine Dynamometer Fuel and Oil Pressure Mapping

Engine dynamometer cells use the PX409 to map fuel-rail pressure, oil-gallery pressure, and crankcase pressure under transient load conditions where its 1 kHz+ dynamic response and ±0.08% static accuracy provide both calibration-grade steady-state readings and fast transient capture. The premium -20 °C to +85 °C compensation is essential under-hood where underbody temperatures swing with cold starts and full-load operation. Series-supported gauge, absolute, and differential reference types allow the same sensor family to be used across intake-manifold vacuum and crankcase blow-by measurements, simplifying dyno cell instrumentation standardisation. All-stainless wetted construction resists gasoline, diesel, and synthetic motor oils encountered during fuel-system mapping.

💊

Pharmaceutical and Food-Process Line Pressure Verification

The PX409 supports pharmaceutical and food-and-beverage process-line pressure verification with documentation requirements met by the included NIST-traceable calibration certificate and stainless-steel hygienic wetted path. Its welded 316L stainless-steel construction is clean-in-place compatible and conforms to typical food-grade process expectations (verify with your validation team). Differential and compound reference formats enable flow-element differential-pressure measurement on clean-in-place skids and sterile filtration lines. With ±0.08% accuracy, the PX409 meets the data-integrity expectations of FDA 21 CFR Part 11 and EU GMP Annex 11 process-validation protocols when paired with appropriate electronic records management.

🧩

Cleanroom and Laboratory Gas-Line Verification

In semiconductor cleanrooms, hospital laboratories, and analytical chemistry suites, the PX409 verifies gas-line pressure for high-purity nitrogen, argon, and specialty gas distribution where ±0.08% accuracy prevents downstream analyzer drift. The low-pressure inches-of-water ranges accurately measure cleanroom static-pressure differentials across HEPA filter walls, supporting ISO 14644-1 particle-count compliance checks. The all-stainless-steel welded sensor body minimizes outgassing and contamination compared to elastomer-sealed alternatives that can offgas under vacuum service. With both gauge and absolute reference modes available, the PX409 doubles for atmospheric-reference and sealed-system pressure measurements in the same lab.

おすすめ製品の概要

PX409-100GI 100 PSI gauge 4-20 mA variant for typical hydraulic skid pressures 使用用途: Hydraulic System Pressure Monitoring, HVAC and Refrigeration Pressure Monitoring, Pharmaceutical and Food-Process Line Pressure Verification PX409-750GI 750 PSI gauge 4-20 mA variant for high-pressure hydraulic circuits 使用用途: Hydraulic System Pressure Monitoring, Engine Dynamometer Fuel and Oil Pressure Mapping PX409-USBH High-speed USB output variant for direct PC data acquisition 使用用途: Test and Measurement Instrumentation PX409-001VI Vacuum-range variant for low-pressure test applications 使用用途: Test and Measurement Instrumentation, Engine Dynamometer Fuel and Oil Pressure Mapping, Cleanroom and Laboratory Gas-Line Verification PX409-32HB5V 32 inH2O range with 0-5 VDC output for low-pressure duct sensing 使用用途: HVAC and Refrigeration Pressure Monitoring, Pharmaceutical and Food-Process Line Pressure Verification, Cleanroom and Laboratory Gas-Line Verification
What is the accuracy of the Omega PX409 pressure transducer?
The PX409 delivers ±0.08% of full-scale accuracy as a Best-Fit-Straight-Line (BFSL) measurement, with an optional ±0.03% linearity variant available through the factory configurator. According to the Omega datasheet, every unit ships with a 5-point NIST-traceable calibration certificate documenting performance across its rated pressure range, supporting ISO 17025 auditability in regulated industries such as pharmaceutical manufacturing and aerospace test stands.
What pressure ranges are available for the PX409?
The PX409 spans from inches-of-water ranges used for HVAC and cleanroom static-pressure verification up to 10,000 PSI for high-pressure hydraulic skids. According to the manufacturer datasheet, gauge, absolute, vacuum (negative gauge), compound, and differential reference formats are configurable, and an extended list of process fittings (1/4" NPT, 1/2" NPT, 1/4" BSP, 7/16-20 SAE, and compression) can be specified at order time.
What output signals does the PX409 support?
The PX409 supports 4-20 mA current-loop output, 0-5 VDC, 0-10 VDC, ±10 VDC, USB (high-speed model), and RS-485 digital output options. According to the Omega datasheet, the 4-20 mA variant is preferred for long cable runs in noisy industrial environments because the current signal is immune to voltage drop and induced EMI, whereas the USBH variant targets direct PC data logging with bundled .NET drivers.
What is the operating temperature range of the PX409?
The PX409 operates from -20 °C to +85 °C with full premium temperature compensation across that band, per the Omega datasheet. This wide compensated window makes the transducer suitable for outdoor hydraulic skids, refrigerated process lines, and engine-dyno fuel-pressure mapping, where competing models typically compensate over only -10 °C to +55 °C and therefore require application-specific recalibration.
What process connection does the PX409 use?
The PX409 is shipped standard with a 1/4" NPT male process connection in stainless steel. According to the Omega configurator page, 1/2" NPT, 1/4" BSP, 7/16-20 SAE, and compression fittings are also available as factory options. All wetted parts are 17-4 PH or 316L stainless steel with welded construction, so the connection is fully compatible with water, hydraulic oil, hydrocarbons, refrigerants, and most industrial gases.
Where can I buy a PX409 pressure transducer?
Authorized Omega distributors including DigiKey stock the PX409 family; for example, the PX409-100GI and PX409-750GI variants are listed on digikey.com with same-day shipping for in-stock units as of 2026-10-14. For OEM quantities, custom pressure ranges, or special fittings, contact Omega Engineering or an authorized Dwyer-Omega sales channel directly through dwyeromega.com.
What is the price of a PX409 pressure transducer?
The PX409 list price starts around 895 USD per unit at quantity 1 and scales down to approximately 705 USD per unit at quantity-500 quantity breaks, as of 2026-10-14. Configuration options such as 0-10 VDC output, USB output, and special process fittings move the price higher; request a formal quote from Omega for exact volume pricing on configured units.
What is the lead time for the PX409?
Configured PX409 units typically ship 2-4 weeks after order entry through Omega Engineering because each unit is built-to-order with pressure range, output type, and process fitting selected per the configurator. Standard catalogue variants stocked by DigiKey, such as the PX409-100GI and PX409-750GI, ship same-day from authorized distributor inventory as of 2026-10-14.
Is the PX409 in stock at major distributors?
Selected catalogue variants such as the PX409-100GI (100 PSI gauge, 4-20 mA) and PX409-750GI (750 PSI gauge, 4-20 mA) are listed in stock at DigiKey as of 2026-10-14. Most other range/output/fitting combinations are built-to-order through the factory configurator with a 2-4 week lead time rather than stocked as off-the-shelf SKUs.
What is the best drop-in replacement for the PX409?
The best drop-in equivalent within the same Omega family is the PX409-100GI when you specifically need the 100 PSI gauge / 4-20 mA configuration; it is the same transducer with the most common build. For a different pressure range or output type, browse the PX409 catalogue via Omega's configurator - the PX419 is an upgraded successor if RoHS-only sourcing is not required, though it is not a true drop-in (different housing dimensions).
What is the difference between the PX409 and the PX419?
The PX419 is Omega's upgraded successor series with higher accuracy, broader temperature compensation, and an updated connector layout compared to the PX409. However, the PX419 is not a drop-in replacement because the housing diameter and process connection options differ; verify the dimensional drawing against your existing installation before specifying a PX419 in legacy PX409 installations.
Where can I download the PX409 datasheet PDF?
The official PX409 Series datasheet PDF is hosted at assets.omega.com under /pdf/test-and-measurement-equipment/pressure/pressure-transducers/PX409_Series.pdf, and the vacuum-range datasheet PDF is at PX409_VAC.pdf. For Installation and reference wiring detail, the same assets.omega.com area also carries application notes; cached third-party copies on alldatasheet.net and digchip.com may be helpful but should be cross-checked against the manufacturer revision.
What are the key specifications of the PX409 that engineers should know?
The PX409 is a ±0.08% BFSL industrial pressure transducer with all-stainless-steel wetted parts, 3X burst rating, and -20 °C to +85 °C premium temperature compensation. Every unit ships with a 5-point NIST-traceable calibration certificate, and the series spans from inches of water to 10,000 PSI across gauge, absolute, differential, vacuum, and compound reference types. Output options cover 4-20 mA, 0-5 VDC, 0-10 VDC, ±10 VDC, USB, and RS-485.
Is the PX409 suitable for hydraulic system monitoring?
Yes, the PX409 is well-suited to hydraulic system monitoring thanks to its 3X full-scale burst safety margin, all-stainless-steel welded construction, and IP-rated sealing. According to the Omega datasheet, the welded 17-4 PH / 316L wetted path tolerates petroleum-based hydraulic fluids, and the 4-20 mA output option rejects EMI cleanly across long runs to PLC analog input cards in factory environments.
Where is the PX409 pinout or wiring diagram located?
Wiring diagrams for the PX409 are located in the official datasheet at assets.omega.com under /pdf/test-and-measurement-equipment/pressure/pressure-transducers/PX409_Series.pdf, in the Installation section on page 3-4. The 4-20 mA two-wire variant uses pin 1 as supply positive and pin 2 as loop return; 0-5 VDC, 0-10 VDC, and ±10 VDC variants require three or four conductors per the appropriate table in the datasheet.

エンジニアリング参考データ: PX409 — 比較、設計ガイダンス、コンプライアンス情報。

選定ガイド

Choose the PX409 when you need a configurable, high-accuracy industrial pressure transducer with NIST-traceable documentation across gauge, absolute, vacuum, compound, or differential measurement types. Within the family, choose the PX409-100GI for typical hydraulic-skid pressures with 4-20 mA loop output, the PX409-750GI for higher-pressure circuits, the PX409-001VI for vacuum measurement, the PX409-32HB5V for low-pressure cleanroom duct sensing, and the PX409-USBH for direct-PC data acquisition. The PX419 is an upgraded successor but not a drop-in replacement; verify dimensional compatibility before specifying it in legacy PX409 installations.

代替品との比較

パラメータ この製品 PX409-100GI PX409-750GI PX409-001VI PX409-32HB5V PX409-USBH
Brand Omega Omega (same family) Omega (same family) Omega (same family) Omega (same family) Omega (same family)
Package 1/4" NPT male process fitting 1/4" NPT male - same 1/4" NPT male - same 1/4" NPT male - same 1/4" NPT male - same 1/4" NPT male - same
Pressure Range Configurable (inH2O to 10,000 PSI) 100 PSI gauge 750 PSI gauge Vacuum range 32 inH2O Configurable
Output Signal Configurable (mA / VDC / USB / RS-485) 4-20 mA 4-20 mA Voltage (0-5 VDC typical) 0-5 VDC USB
Accuracy ±0.08% BFSL ±0.08% BFSL ±0.08% BFSL ±0.08% BFSL ±0.08% BFSL ±0.08% BFSL
NIST Calibration Certificate 5-point, included 5-point, included 5-point, included 5-point, included 5-point, included 5-point, included
Wetted Materials 17-4 PH / 316L stainless steel 17-4 PH / 316L stainless steel 17-4 PH / 316L stainless steel 17-4 PH / 316L stainless steel 17-4 PH / 316L stainless steel 17-4 PH / 316L stainless steel
Operating Temperature -20 °C to +85 °C -20 °C to +85 °C -20 °C to +85 °C -20 °C to +85 °C -20 °C to +85 °C -20 °C to +85 °C

主な差別化要因

  • NIST-traceable 5-point calibration included per unit (vs PX409-100GI)
  • All-stainless-steel 17-4 PH / 316L welded construction (vs PX409-32HB5V)
  • Configurable output and pressure range from a single sensor family (vs PX409-USBH)

設計ノート

Transient water-hammer spikes on hydraulic lines can far exceed the rated pressure even when steady-state readings are within spec. Use the PX409 in applications where the dynamic peak stays below the 3x full-scale burst rating; consider adding an inline snubber or accumulator if the upstream pump or valve stack is prone to pressure transients, otherwise the welded sensing diaphragm can be overstressed during a spike event.

For 4-20 mA two-wire installations, route the loop wiring through shielded twisted-pair cable with the shield grounded at the controller end only, to reject common-mode noise from VFD cables and motor leads. Keep analog signal runs at least 12 inches from AC power conductors and avoid parallel runs longer than 3 feet; for long cable runs (>500 ft), choose a voltage-output PX409 variant instead and convert to current near the controller to preserve signal integrity.

Although the PX409 carries full temperature compensation across -20 °C to +85 °C, do not assume accuracy holds beyond the compensated range - operating above +85 °C accelerates elastomer-seal aging and shifts zero point, while operating below -20 °C risks condensation forming on the sensing diaphragm. For outdoor hydraulic-skid installations in cold climates, mount the transducer inside a heated enclosure or use a heat-traced version if specified through the Omega configurator.

The PX409 sensing diaphragm is sensitive to vibration-induced noise above ~200 Hz, especially on engine-dyno and reciprocating-pump installations. Vibration-isolate the transducer with a flexible hose section or a dampening bracket and avoid rigid-mounting directly to the pressure source; this preserves ±0.08% accuracy and prevents premature fatigue at the welded process-fitting root.

コンプライアンス情報

RoHS
Compliant
REACH
Unknown
AEC-Q100
Not Applicable
鉛フリー
Yes
ハロゲンフリー
Unknown
紛争鉱物
Unknown

RoHS compliance confirmed via Omega product page. AEC-Q100 not applicable for industrial pressure transducer. REACH, halogen-free, and conflict-minerals compliance not stated in available web data and are flagged unknown.

データ検証日: 2026-10-14 — データはXAIPARTの部品エンジニアリングチームによって検証・管理されています

関連検索

PX409 datasheet Omega PX409 pressure transducer PX409 0.08% accuracy PX409-100GI 100 PSI gauge 4-20 mA high accuracy NIST pressure transducer PX409 vs PX419 buy PX409 online PX409 hydraulic system pressure sensor PX409 USB pressure transducer what is the operating temperature of the PX409 PX409 pinout wiring diagram Omega pressure transducer drop-in replacement

関連部品&用語

Omega Omega Engineering PX409 PX409-100GI PX409-750GI PX409-001VI PX409-32HB5V PX409-USBH pressure transducer pressure sensor pressure transmitter industrial automation instrumentation process control NIST traceable calibration ISO 17025 AEC-Q100 RoHS 4-20 mA current loop BFSL 17-4 PH stainless steel 316L stainless steel micro-machined silicon piezoresistive strain gauge 1/4 inch NPT BSP fitting USB pressure sensor RS-485
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