Honeywell PX2 Pressure Transducers

Honeywell PX2 Pressure Transducers

Overview

The Honeywell PX2 Series Heavy Duty Pressure Transmitter is a family of highly configurable industrial pressure transducers designed for reliable performance in demanding applications. Using piezoresistive sensing technology with an on-board ASIC for signal conditioning, the PX2 Series is housed in a rugged 304 stainless steel enclosure and delivers fully calibrated, temperature-compensated output across a wide operating range.

Unlike traditional process transmitters that integrate local display modules, the PX2 Series is a compact transducer form factor optimized for OEM and machinery integration where space is constrained and remote monitoring via control systems is preferred. For applications requiring local visual indication, external panel meters or loop-powered LCD displays can be integrated into the 4–20 mA loop.

The PX2 Series measures absolute, sealed gage, or vented gage pressure, with thousands of possible configurations allowing Honeywell to meet diverse customer requirements with short lead times-1. The series is available in three pressure ranges covering 1 bar to 70 bar, 100 kPa to 7 MPa, or 15 psi to 1000 psi-1. All products are RoHS compliant and manufactured according to ISO 9001 standards-1.

Key Specifications

General Specifications

Performance & Accuracy

Total Error Band (TEB) Clarification

The PX2 Series is fully calibrated and compensated for offset, sensitivity, temperature effects and non-linearity using the on-board ASIC. This provides a Total Error Band of ±2% over the entire operating temperature range of −40 °C to 125 °C, meaning users can rely on consistent measurement accuracy without performing additional in-system calibration across the full temperature spectrum-1.

Temperature Specifications

Electrical Specifications

Pressure Port Specifications

Environmental & Mechanical

Media Compatibility

The PX2 Series is compatible with a wide range of harsh media commonly found in industrial applications-1-18:

Note: For ammonia and other highly corrosive media, refer to Honeywell‘s SPT Series-18. The PX2 Series fluid path is an assembly of 304 stainless steel, epoxy, alumina, glass, and silicon; use only non-abrasive, chemically compatible media to prevent damage to diaphragm or port materials-25.

Certifications & Compliance

Pressure Reference Types

The PX2 Series supports three distinct pressure measurement references:

Output Signal Options

The PX2 Series offers multiple output configurations to accommodate different control system requirements:

For applications requiring local visual indication with a 4–20 mA output, an external loop-powered LCD panel meter or digital indicator can be placed in series with the current loop to provide real-time pressure readout without affecting the 4–20 mA signal integrity.

Configuration Nomenclature

The PX2 Series ordering code follows a structured format that encodes pressure range, output type, pressure reference, port style, electrical connection, and other options. Standard configuration elements include:

Pressure Range: 006B (6 bar), 015P (15 psi), 030P (30 psi), 060P (60 psi), 100P (100 psi), 200P (200 psi), 300P (300 psi), 500P (500 psi), 1000P (1000 psi)

Output Type: AC (0.5–4.5 V ratiometric), AD (1–5 V regulated), AF (4–20 mA), AG (0–10 V)

Pressure Reference: A (Absolute), G (Vented Gage), S (Sealed Gage)

Port Style: Variants include NPT, UNF, G-thread, and M-thread options

Electrical Connection: Packard, Deutsch, cable, or custom harness

Example Configuration: PX2AN1XX200PAAAX = PX2 Series, Absolute pressure, 200 psi range, 0.5–4.5 V output, 1/4″ NPT male port, Packard connector, RoHS compliant.

Applications

The PX2 Series Heavy Duty Pressure Transmitter is engineered for monitoring performance and efficiency across a broad spectrum of industrial applications–18:

The PX2 Series can survive at least 10 million pressure cycles and operates reliably in the rigorous environments commonly found in HVAC/R and air compressor applications-18. The wide operating temperature range and ingress protection up to IP69K enable deployment in washdown environments and outdoor installations where moisture, dust, and temperature extremes are present-1.

Installation & Wiring Considerations

When installing the PX2 Series pressure transmitter, observe the following guidelines:

Torque Specifications: NPT ports are installed based on Turns From Finger Tight (TFFT) rather than specific torque values. When using NPT ports in stainless steel manifolds, use a thread sealant with anti-seize properties to prevent thread galling-25.

Installation Tools: Use appropriate tools such as an open-ended wrench or deep well socket. Always hand-start transducers into the mounting hole to prevent cross-threading and damage-25.

Overpressure Protection: Do not exceed the specified overpressure rating. Both static and dynamic overpressure must be considered, particularly in hydraulic system applications where pressure fluctuations can produce high peak pressures (water hammer effect). An oscilloscope is recommended for determining if high-pressure transients exist in a system. A pressure snubber may be used to reduce peak pressure applied to the transducer-25.

Electromagnetic Interference (EMI): Although the PX2 Series has been rated for high immunity to electrical noise (100 V/m radiated immunity), care should be taken when used near high-voltage sources that emit high levels of radiated electromagnetic energy, such as variable frequency motor drives, solenoids, radio transmitters, and engine ignition systems. The use of shielded cable and grounding of the pressure port is recommended-25.

Power Supply: Ensure the power supply is off while wiring. Ratiometric voltage devices require either a regulated 3.3 Vdc or regulated 5.0 Vdc supply depending on the specific model. All other versions can use an unregulated supply within the specified excitation ranges-25.

Ordering Information

When specifying the Honeywell PX2 Series Heavy Duty Pressure Transmitter, consider the following configuration parameters:

Pressure Range: Select from 1 bar to 70 bar (or equivalent in kPa/psi)

Pressure Reference: Absolute, Sealed Gage, or Vented Gage

Output Signal: 4–20 mA, 0.5–4.5 V ratiometric, 1–5 V, or 0–10 V

Pressure Port Type: Select from NPT, UNF, G-thread, or M-thread options

Electrical Connection: Packard Metri-Pack 150, Deutsch DT04-3P, cable harness, or custom

Accuracy Grade: Standard (±0.25% FSS) or economy (±0.5% FSS) where available

Consult the official Honeywell PX2 Series datasheet (document number 500599462) for the complete ordering matrix and available configuration codes-12.