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GX-MK18A-P Equivalent & Substitute Parts
Part Overview
The GX-MK18A-P is an inductive proximity sensor manufactured by Panasonic Industrial Automation Sales. This cylindrical M18-threaded sensor provides PNP-NO output with a 9.6mm sensing distance, designed for industrial automation applications requiring non-contact object detection. The product is currently obsolete, making identification of compatible substitute parts essential for system maintenance and component replacement in existing installations.
Substiute Parts
Key Parameters
| Parameter | GX-MK18A-P |
|---|---|
| Sensor Type | Inductive |
| Sensing Distance | 0.378" (9.6mm) |
| Output Type | PNP-NO, 3-Wire |
| Voltage Supply | 12V ~ 24V |
| Response Frequency | 1kHz |
| Package / Case | Cylinder, Threaded - M18 |
| Ingress Protection | IP68, IP69K |
| Operating Temperature | -25°C ~ 70°C |
| Material - Body | Nickel-Plated Brass |
| Termination Style | Cable Leads |
| RoHS Status | RoHS Compliant |
Substitute Part Grouping Explanation
The GX-318MLK-A-P qualifies as a substitute for the GX-MK18A-P based on the following critical parameters:
Matching Parameters:
- Sensor Type: Both are inductive proximity sensors
- Output Type: Both provide PNP-NO, 3-Wire configuration
- Package / Case: Both use Cylinder, Threaded - M18 form factor
- Termination Style: Both use Cable Leads
- Material - Body: Both use Nickel-Plated Brass
- Ingress Protection: Both meet IP69K rating (GX-318MLK-A-P additionally supports IP67 and IP67G)
Differing Parameters:
- Sensing Distance: GX-318MLK-A-P has 0.504" (12.8mm) versus 9.6mm
- Voltage Supply: GX-318MLK-A-P supports 10V ~ 30V (broader range)
- Response Frequency: GX-318MLK-A-P operates at 600Hz versus 1kHz
- Operating Temperature: GX-318MLK-A-P range is -40°C ~ 85°C (extended)
- Product Status: GX-318MLK-A-P is Active
Parameter Comparison
| Parameter | GX-MK18A-P | GX-318MLK-A-P | Compatibility Note |
|---|---|---|---|
| Sensor Type | Inductive | Inductive | Match |
| Output Type | PNP-NO, 3-Wire | PNP-NO, 3-Wire | Match |
| Sensing Distance | 0.378" (9.6mm) | 0.504" (12.8mm) | Substitute has greater range |
| Voltage Supply | 12V ~ 24V | 10V ~ 30V | Substitute supports wider range |
| Response Frequency | 1kHz | 600Hz | Substitute has lower response rate |
| Package / Case | Cylinder, Threaded - M18 | Cylinder, Threaded - M18 | Match |
| Ingress Protection | IP68, IP69K | IP67, IP67G, IP69K | Both meet IP69K; substitute adds IP67 variants |
| Operating Temperature | -25°C ~ 70°C | -40°C ~ 85°C | Substitute supports extended range |
| Material - Body | Nickel-Plated Brass | Nickel-Plated Brass | Match |
| Termination Style | Cable Leads | Cable Leads | Match |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | Both compliant; substitute meets newer standard |
Engineering Selection Recommendations
The GX-318MLK-A-P is an active-status substitute for the obsolete GX-MK18A-P. Both sensors share identical electrical output characteristics (PNP-NO, 3-Wire), mechanical form factor (M18 threaded cylinder), and material composition (nickel-plated brass). The GX-318MLK-A-P meets current RoHS3 compliance requirements, whereas the original part meets RoHS Compliant standards.
Selection of the GX-318MLK-A-P requires verification that the increased sensing distance (12.8mm versus 9.6mm) and reduced response frequency (600Hz versus 1kHz) are acceptable for the specific application. The substitute's broader voltage supply range (10V ~ 30V) and extended operating temperature range (-40°C ~ 85°C) provide operational flexibility. Both parts maintain IP69K ingress protection rating, suitable for harsh industrial environments.
Frequently Asked Questions (FAQ)
Q: Can the GX-318MLK-A-P directly replace the GX-MK18A-P in existing installations?
A: Mechanical and electrical compatibility is confirmed. The M18 threaded cylinder form factor and PNP-NO, 3-Wire output enable direct socket replacement. However, the increased sensing distance (12.8mm versus 9.6mm) may require adjustment of component positioning or detection logic depending on application requirements.
Q: What is the impact of the different sensing distances?
A: The GX-318MLK-A-P detects objects at a greater distance (12.8mm) compared to the original part (9.6mm). Applications requiring precise short-range detection may need recalibration or repositioning of the sensor relative to target objects.
Q: Does the lower response frequency of the GX-318MLK-A-P affect performance?
A: The substitute operates at 600Hz versus the original 1kHz. This difference is relevant only for applications requiring detection of rapidly moving objects or high-speed switching cycles. Most industrial automation applications operate within the 600Hz response capability.
Q: Are there voltage supply considerations for substitution?
A: The GX-318MLK-A-P supports 10V ~ 30V, which encompasses the original part's 12V ~ 24V range. Existing power supply configurations remain compatible without modification.
Q: What are the packaging differences?
A: The GX-MK18A-P ships in standard packaging, while the GX-318MLK-A-P is packaged in a Box. This difference affects only logistics and storage; the sensor itself is identical in form factor and function.
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