MLH500PST12E Equivalent & Substitute Parts

Part Overview

The MLH500PST12E is an all-metal pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for sealed gauge pressure measurement in industrial automation applications. This component delivers amplified analog voltage output with temperature compensation across a wide operating range. The product is classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, redesign, and procurement planning.

Substiute Parts

MLH500PST12E

Honeywell Sensing and Productivity SolutionsIn Stock: 1152MLH500PST12E Datasheet

Current PartRFQ

P51-500-S-AF-I12-5V-000-000

Amphenol SSI TechnologiesIn Stock: 1065P51-500-S-AF-I12-5V-000-000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MLH500PST12E is determined by strict alignment of the following critical parameters:

Pressure Measurement Specifications:

• Sealed gauge pressure type
• 500 PSI operating pressure rating
• Male 9/16" (14.29 mm) UNF threaded port

Electrical Interface:

• Analog voltage output
• Amplified output with temperature compensation
• Supply voltage range compatibility

Environmental & Compliance:

• Operating temperature range
• RoHS compliance status
• ECCN and HTSUS classification alignment

The substitute part P51-500-S-AF-I12-5V-000-000 from Amphenol SSI Technologies satisfies these core substitution criteria through matching pressure type, port configuration, output type, and regulatory compliance. Variations in output voltage range, accuracy specification, and maximum temperature rating represent acceptable engineering tolerances within the sealed gauge pressure sensor category.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The MLH500PST12E is classified as obsolete. The P51-500-S-AF-I12-5V-000-000 carries active product status, ensuring ongoing manufacturer support, availability, and compliance with current regulatory standards.

Regulatory Compliance: Both components maintain RoHS compliance and share identical ECCN (EAR99) and HTSUS (9026.20.4000) classifications, confirming equivalent regulatory standing for procurement and export purposes.

Mechanical Compatibility: Both sensors feature identical port configurations (Male 9/16" UNF threaded), enabling direct mechanical substitution in existing manifold and mounting assemblies without mechanical redesign.

Electrical Interface: The substitute part operates within overlapping supply voltage ranges (8 V ~ 30 V vs. 7 V ~ 30 V). Output voltage ranges differ (1 V ~ 5 V vs. 0.5 V ~ 4.5 V), requiring signal conditioning circuit verification to confirm compatibility with existing analog input modules and data acquisition systems.

Accuracy Trade-off: The substitute part specifies ±0.5% accuracy versus the original ±0.25%. System-level accuracy requirements must be evaluated to determine acceptability of this specification change.

Temperature Operating Range: The substitute part operates to 105°C maximum versus 125°C for the original. Applications requiring operation above 105°C require alternative component selection.

Frequently Asked Questions (FAQ)

Q: Can the P51-500-S-AF-I12-5V-000-000 be used as a direct replacement for the MLH500PST12E?

A: Mechanical and functional substitution is possible due to matching pressure ratings, port configurations, and output types. However, electrical signal conditioning must be verified. The substitute part's output range (1 V ~ 5 V) differs from the original (0.5 V ~ 4.5 V), and accuracy specification is ±0.5% versus ±0.25%. System-level testing is required to confirm signal compatibility with existing analog input circuits.

Q: What are the critical parameters that determine substitution eligibility?

A: Substitution eligibility is determined by: sealed gauge pressure type, 500 PSI operating pressure rating, male 9/16" UNF threaded port, analog voltage output with amplification and temperature compensation, RoHS compliance, and matching ECCN/HTSUS classifications. Deviations in these parameters disqualify alternative components.

Q: Does the substitute part require different mounting hardware?

A: No. Both components feature identical male 9/16" UNF threaded ports, enabling use of existing port adapters, manifold connections, and mounting hardware without modification.

Q: What is the impact of the ±0.5% accuracy specification on system performance?

A: The substitute part's ±0.5% accuracy is twice the tolerance of the original ±0.25% specification. Applications with tight pressure measurement requirements must evaluate whether this increased tolerance is acceptable for process control, safety interlocks, or data logging functions.

Q: Are there temperature limitations when substituting this component?

A: Yes. The substitute part operates to a maximum of 105°C, compared to 125°C for the original. Applications requiring sustained operation above 105°C cannot use this substitute and require alternative component selection.

Q: Do both components share the same supply voltage requirements?

A: Both components operate within the 7 V ~ 30 V range, with the substitute part specifying a minimum of 8 V. Existing power supplies designed for the original component will function with the substitute, provided minimum supply voltage does not fall below 8 V.

Q: What packaging differences exist between these components?

A: The original specifies "Cylinder, Metal" packaging, while the substitute specifies "Cylinder" packaging. Both are supplied in cylindrical metal housings suitable for threaded port installation. The substitute is packaged in boxes for distribution.