Equivalent & Substitute Parts for Parallax Inc. 29131

Part Overview

The Parallax Inc. 29131 is a resistive liquid and powder level sensor from the eTape™ series, designed to measure fluid levels through variable resistance output (85Ohm to 700Ohm). The sensor features adhesive mounting and operates across a temperature range of -9°C to 60°C with a 5V voltage rating.

This part is classified as Obsolete. Identifying equivalent or substitute components is necessary to maintain system functionality in applications where the original part is no longer available through standard distribution channels.

Substiute Parts

29131

Parallax Inc.In Stock: 105629131 Datasheet

Current PartRFQ

464

CEC IndustriesIn Stock: 807464 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the Parallax 29131 resistive level sensor is constrained by the following critical parameters:

• Output Type: Resistive (variable resistance output)
• Output Range: 85Ohm to 700Ohm
• Sensor Application: Liquid and powder level measurement
• Mounting Configuration: Adhesive attachment
• Operating Voltage: 5V
• Temperature Operating Range: -9°C to 60°C
• Environmental Compliance: RoHS Compliant

The substitute part identified (CEC Industries 464) does not meet the functional and electrical requirements for direct substitution. CEC Industries 464 is a lamp component (T-3.25 wedge base, 28V, 0.17A) designed for illumination applications, not level sensing. This part operates at 28V, has a different functional purpose, and lacks the resistive output characteristics required for level measurement applications.

Conclusion: No functionally equivalent substitute part is available from the provided substitute list. The CEC Industries 464 cannot replace the Parallax 29131 in any application requiring resistive level sensing.

Parameter Comparison

Engineering Selection Recommendations

Based on the provided data, the CEC Industries 464 cannot serve as a substitute for the Parallax 29131. The parts belong to entirely different functional categories: the Parallax 29131 is a resistive sensor for level measurement, while the CEC Industries 464 is an incandescent lamp for illumination.

For applications requiring the Parallax 29131 functionality:

• Verify the exact level measurement range and output impedance requirements of the original application circuit
• Consult alternative resistive level sensor manufacturers for compatible products with matching output ranges (85Ohm to 700Ohm)
• Confirm adhesive mounting compatibility with the target container or vessel
• Validate operating temperature requirements within the -9°C to 60°C specification

Both parts share RoHS compliance and EAR99 export classification status, but these certifications do not establish functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the CEC Industries 464 replace the Parallax 29131 in my application?

A: No. The CEC Industries 464 is a lamp component designed for illumination, not a level sensor. It cannot provide the resistive output signal required for level measurement applications.

Q: What makes two parts functionally equivalent in level sensor applications?

A: Equivalent level sensors must share the same output type (resistive), output impedance range (85Ohm to 700Ohm for this application), sensor medium compatibility (liquid/powder), mounting method (adhesive), and operating voltage (5V).

Q: Why is the Parallax 29131 classified as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. Original inventory may still be available through authorized distributors, but long-term availability is not guaranteed.

Q: What should I do if I cannot locate a Parallax 29131?

A: Contact level sensor manufacturers specializing in resistive output devices. Provide your application's specific requirements: output impedance range, fluid type, temperature range, and mounting constraints. Alternative manufacturers may offer compatible resistive level sensors.

Q: Are there any compliance concerns when substituting this part?

A: Both the original and any substitute must maintain RoHS compliance for applications in regulated markets. Verify ECCN classification for export applications.