DPH-A27 Equivalent & Substitute Parts

Part Overview

The DPH-A27 is a compound pressure sensor head manufactured by Panasonic Industrial Automation Sales, designed for industrial automation applications. This sensor provides analog voltage output (1 V ~ 5 V) with ±1% accuracy across a compound pressure range of ±14.5 PSI (±100 kPa), operating within 0°C to 50°C. The product is currently obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and component sourcing in active installations.

Substiute Parts

DPH-A27

Panasonic Industrial Automation SalesIn Stock: 1107DPH-A27 Datasheet

Current PartRFQ

NPI-19J-101GH

Amphenol NovaSensorIn Stock: 999NPI-19J-101GH Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete DPH-A27 is evaluated based on the following critical parameters:

• Pressure Type & Operating Range: The DPH-A27 operates as a compound pressure sensor at ±14.5 PSI (±100 kPa). Substitute parts must accommodate this pressure specification.
• Output Type & Signal Compatibility: The DPH-A27 provides analog voltage output (1 V ~ 5 V). Substitute parts with different output types (such as Wheatstone Bridge or millivolt outputs) require signal conditioning or interface modification.
• Port Configuration: The DPH-A27 features both female 10-32 UNF and male 1/8" NPT ports. Port compatibility is essential for mechanical installation.
• Electrical Interface: Supply voltage (12 V ~ 24 V) and termination style (connector-based) must be compatible with existing system architecture.
• Environmental Operating Range: The DPH-A27 operates from 0°C to 50°C. Substitutes with extended or narrower temperature ranges may require system re-evaluation.

The identified substitute NPI-19J-101GH shares the male 1/8" NPT port configuration and operates within the same pressure class (14.5 PSI / 100 kPa). However, critical differences exist in output type, termination style, and operating temperature range that must be addressed during integration.

Parameter Comparison

Engineering Selection Recommendations

The NPI-19J-101GH is identified as a functionally related alternative to the obsolete DPH-A27 based on shared pressure class (14.5 PSI / 100 kPa) and male 1/8" NPT port configuration. However, direct substitution is not recommended without system-level modifications:

Output Signal Incompatibility: The DPH-A27 outputs analog voltage (1 V ~ 5 V), while the NPI-19J-101GH outputs a Wheatstone Bridge signal (0 mV ~ 100 mV). Integration requires signal conditioning circuitry or a compatible instrumentation amplifier to convert the bridge output to the expected voltage range.

Termination Difference: The DPH-A27 uses connector-based termination, while the NPI-19J-101GH uses flex cable termination. Mechanical and electrical interface redesign is necessary.

Pressure Type Distinction: The DPH-A27 measures compound pressure (bidirectional), while the NPI-19J-101GH measures vented gauge pressure (unidirectional). System applications requiring compound pressure measurement may require alternative evaluation.

Product Status: The NPI-19J-101GH is currently active in production and RoHS3 compliant, supporting long-term availability and regulatory compliance.

Temperature Operating Range: The NPI-19J-101GH supports -40°C to 125°C, exceeding the DPH-A27 range of 0°C to 50°C. This provides operational flexibility for extended environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can the NPI-19J-101GH directly replace the DPH-A27 in an existing system?

A: No. While both sensors operate at 14.5 PSI (100 kPa) and share the male 1/8" NPT port, the NPI-19J-101GH requires signal conditioning to convert its Wheatstone Bridge output (0 mV ~ 100 mV) to the DPH-A27's analog voltage output (1 V ~ 5 V). Additionally, termination style differs (flex cable vs. connector), requiring interface modification.

Q: What is the key difference between compound pressure and vented gauge pressure?

A: Compound pressure sensors measure bidirectional pressure (both positive and negative relative to atmospheric pressure), indicated by the ± notation in the DPH-A27 specification (±14.5 PSI). Vented gauge pressure sensors measure only positive pressure relative to atmospheric pressure. Application requirements determine which type is appropriate.

Q: Is the NPI-19J-101GH suitable for applications requiring the DPH-A27's ±72.52 PSI (±500 kPa) maximum pressure rating?

A: No. The NPI-19J-101GH has a maximum pressure rating of 29.01 PSI (200 kPa), which is significantly lower than the DPH-A27's ±72.52 PSI (±500 kPa) burst rating. Applications requiring higher pressure tolerance must identify alternative components.

Q: What is the accuracy difference between these sensors?

A: The DPH-A27 provides ±1% accuracy, while the NPI-19J-101GH provides ±0.25% accuracy. The NPI-19J-101GH offers superior measurement precision, which may benefit applications requiring tighter tolerance control.

Q: Are both sensors RoHS compliant?

A: Yes. The DPH-A27 is RoHS Compliant, and the NPI-19J-101GH is ROHS3 Compliant. Both meet regulatory requirements for hazardous substance restrictions.

Q: What supply voltage does the NPI-19J-101GH require?

A: The supply voltage specification for the NPI-19J-101GH is not provided in the available technical data. This parameter must be obtained from the manufacturer's datasheet before system integration.