GX-8ML Inductive Proximity Sensor - Equivalent & Substitute Parts

Part Overview

The GX-8ML is an inductive proximity sensor manufactured by Panasonic Industrial Automation Sales, designed for non-contact detection in industrial automation applications. This M8 threaded cylinder sensor operates with a 1.6mm sensing distance and provides NPN-NO output configuration suitable for 10V to 30V supply systems.

The GX-8ML has reached obsolete product status. Identifying equivalent substitute parts ensures continued system availability and maintenance capability for existing installations and new designs requiring compatible functionality.

Substiute Parts

GX-8ML
Panasonic Industrial Automation SalesIn Stock: 660GX-8ML Datasheet
GX-8ML
Current Part
GX-308ML-A-N
Panasonic Industrial Automation SalesIn Stock: 742GX-308ML-A-N Datasheet
GX-308ML-A-N
MFR Recommended

Key Parameters

Parameter Value
Sensor Type Inductive
Sensing Distance 0.063" (1.6mm)
Output Type NPN-NO, 3-Wire
Voltage Supply Range 10V ~ 30V
Package / Case Cylinder, Threaded - M8
Termination Style Cable Leads
Ingress Protection IP67
Operating Temperature -25°C ~ 70°C
Material - Body Nickel-Plated Brass
Indicator LED
RoHS Status RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the GX-8ML is determined by strict equivalence across the following critical parameters:

  • Sensor Type: Must be Inductive
  • Sensing Distance: Must be 0.063" (1.6mm)
  • Output Type: Must be NPN-NO, 3-Wire configuration
  • Voltage Supply Range: Must support 10V ~ 30V operation
  • Package / Case: Must be Cylinder, Threaded - M8
  • Termination Style: Must be Cable Leads
  • Ingress Protection: Must meet minimum IP67 rating

The GX-308ML-A-N satisfies all substitution criteria as a direct equivalent part from the same manufacturer's active product line.

Parameter Comparison

Parameter GX-8ML (Obsolete) GX-308ML-A-N (Active) Compatibility
Sensor Type Inductive Inductive Match
Sensing Distance 0.063" (1.6mm) 0.063" (1.6mm) Match
Output Type NPN-NO, 3-Wire NPN-NO, 3-Wire Match
Voltage Supply Range 10V ~ 30V 10V ~ 30V Match
Package / Case Cylinder, Threaded - M8 Cylinder, Threaded - M8 Match
Termination Style Cable Leads Cable Leads Match
Ingress Protection IP67 IP67, IP67G, IP69K Compatible (Enhanced)
Operating Temperature -25°C ~ 70°C -40°C ~ 85°C (TA) Compatible (Extended)
Material - Body Nickel-Plated Brass Stainless Steel Compatible (Enhanced)
Response Frequency 500Hz 2kHz Compatible (Enhanced)
Indicator LED LED Match
RoHS Status RoHS Compliant ROHS3 Compliant Compatible (Enhanced)

Engineering Selection Recommendations

The GX-308ML-A-N is the manufacturer-recommended substitute for the obsolete GX-8ML. Both sensors maintain identical electrical and mechanical specifications for the critical substitution parameters: sensing distance, output configuration, supply voltage range, M8 threaded package, and cable lead termination.

The GX-308ML-A-N provides enhanced specifications across multiple dimensions:

  • Extended operating temperature range (-40°C to 85°C versus -25°C to 70°C)
  • Stainless steel body construction versus nickel-plated brass, offering improved corrosion resistance
  • Higher response frequency capability (2kHz versus 500Hz)
  • Extended ingress protection ratings (IP67G and IP69K in addition to IP67)
  • ROHS3 compliance versus RoHS compliance

These enhancements ensure compatibility with existing GX-8ML installations while providing improved performance characteristics and environmental durability for new deployments.

Frequently Asked Questions (FAQ)

Q: Can the GX-308ML-A-N directly replace the GX-8ML in existing installations?

A: Yes. The GX-308ML-A-N maintains identical electrical output type (NPN-NO, 3-Wire), supply voltage range (10V ~ 30V), sensing distance (1.6mm), and M8 threaded package configuration. Cable lead termination is identical. Direct mechanical and electrical substitution is supported.

Q: What are the key differences between these sensors?

A: The GX-308ML-A-N features stainless steel body construction compared to nickel-plated brass, extended operating temperature range, higher response frequency (2kHz versus 500Hz), and enhanced ingress protection ratings. These represent performance and durability improvements while maintaining core functional equivalence.

Q: Does the higher response frequency of the GX-308ML-A-N affect compatibility?

A: No. Higher response frequency capability is a performance enhancement that does not compromise compatibility. Systems designed for the GX-8ML's 500Hz response will operate correctly with the GX-308ML-A-N's 2kHz capability.

Q: Are there any supply voltage or wiring considerations for substitution?

A: No. Both sensors operate across the identical 10V ~ 30V supply range and use 3-Wire NPN-NO output configuration. Existing wiring and power supply connections require no modification.

Q: What is the significance of the stainless steel body in the GX-308ML-A-N?

A: Stainless steel provides enhanced corrosion resistance compared to nickel-plated brass, particularly in harsh or chemically aggressive environments. This material upgrade improves sensor longevity without affecting electrical or mechanical compatibility.

Q: Are both sensors RoHS compliant?

A: Yes. The GX-8ML is RoHS compliant. The GX-308ML-A-N meets the more recent ROHS3 compliance standard, representing an enhanced regulatory certification level.

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