T18SP6RQ Through-Beam Optical Sensor

Part Overview

The T18SP6RQ is a through-beam optical sensor manufactured by Banner Engineering Corporation, designed for long-range detection applications up to 787.402" (20m). This sensor operates with PNP output configuration in Dark-ON/Light-ON mode, utilizing infrared light source at 950nm wavelength. The product is currently classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing system support and new installations.

Substiute Parts

T18SP6RQ

Banner Engineering CorporationIn Stock: 1150T18SP6RQ Datasheet

Current PartRFQ

T18-2VPRL-Q8

Banner Engineering CorporationIn Stock: 777T18-2VPRL-Q8 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the T18SP6RQ is determined by the following critical parameters:

• Sensing Method: Must be through-beam configuration
• Output Configuration: Must be PNP with Dark-ON/Light-ON logic
• Voltage Supply Range: Must accommodate 10V ~ 30V operation
• Operating Temperature Range: Must support -40°C ~ 70°C
• Connection Method: Must use connector interface
• Ingress Protection: Must maintain minimum IEC IP67 rating
• Regulatory Compliance: Must be ROHS3 Compliant and REACH Unaffected

The T18-2VPRL-Q8 qualifies as a substitute based on these parameters. While it offers extended sensing distance (82.02' / 25m versus 20m) and improved response time (1.5ms versus 3ms), these represent functional enhancements rather than deviations from the core substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

The T18-2VPRL-Q8 is the designated substitute for the obsolete T18SP6RQ. Both sensors maintain identical electrical interface specifications (10V ~ 30V supply, PNP output, Dark-ON/Light-ON logic) and operational temperature range (-40°C ~ 70°C). Both components satisfy ROHS3 compliance and REACH unaffected status requirements.

The T18-2VPRL-Q8 carries active product status, ensuring ongoing manufacturer support and availability. The substitute provides enhanced performance characteristics including extended sensing distance and faster response time, with equivalent or superior ingress protection ratings. The shift from infrared (950nm) to red LED light source represents a technical change that may affect performance in specific environmental conditions but does not preclude functional substitution within standard industrial applications.

Frequently Asked Questions (FAQ)

Q: Can the T18-2VPRL-Q8 directly replace the T18SP6RQ in existing installations?

A: Yes, provided the application does not depend on the specific infrared (950nm) light source characteristic of the original sensor. Both sensors share identical electrical interface requirements, output logic, and operating temperature specifications. Physical connector compatibility must be verified during installation.

Q: What is the primary difference between these sensors?

A: The T18-2VPRL-Q8 offers extended sensing distance (25m versus 20m) and faster response time (1.5ms versus 3ms). The light source differs: the original uses infrared at 950nm, while the substitute uses red LED. Both maintain PNP Dark-ON/Light-ON output configuration and identical supply voltage range.

Q: Are there compliance or regulatory differences between these parts?

A: No. Both sensors are ROHS3 compliant and REACH unaffected. Ingress protection ratings are equivalent or superior on the substitute (IEC IP67, IEC IP68, IEC IP69K versus NEMA 6P, IEC IP67, IEC IP69K).

Q: Does the light source change affect sensor performance?

A: Light source selection impacts performance in specific environmental conditions. Red LED sensors typically perform differently in high ambient light or reflective environments compared to infrared sensors. Application-specific testing is necessary to confirm suitability for specialized use cases.

Q: What is the inventory status of these parts?

A: The T18SP6RQ (obsolete) has 1088 units in stock. The T18-2VPRL-Q8 (active) has 749 units in stock. Active product status ensures continued availability of the substitute.