YL72 Non-Contact Spectrophotometer | 45/0 Inline Color Difference Monitoring

YL72 45/0 Non-Contact Spectrophotometer for Inline Color Monitoring

The YL72 non-contact spectrophotometer is designed for automated production lines, fixed fixtures, robot work cells and online color-difference monitoring. Its 45/0 geometry and 7.5 mm measuring distance allow color assessment without placing a probe on the sample. It can be evaluated for liquids, pastes, powders, delicate surfaces and other materials that are not suitable for direct-contact measurement.

YL72 supports USB, RJ45, RS485 and RS232 interfaces for evaluation with a host computer, PLC or automation system, subject to the supplied configuration. Before deployment, confirm sample condition, distance stability, line speed, mounting, trigger logic and the quality-control decision process.

45/0 measurement at a fixed non-contact distance

The instrument uses 45° annular illumination and 0° viewing. A stable 7.5 mm distance helps establish a repeatable online measurement position. For moving samples, assess conveyor speed, trigger location, sampling interval and the method used to return measurement data. Representative samples and actual production conditions should be tested before acceptance limits are set.

For delicate and special samples

Non-contact measurement can reduce probe adhesion, contamination and surface impact when evaluating liquids, pastes, powders, fragile surfaces or materials that should not be touched. Flowing, uneven or height-variable samples still require suitable positioning and a stable measurement window. Highly glossy, matte, translucent or non-uniform materials should be checked at representative points and orientations.

Optical sensing and automatic calibration

YL72 uses a silicon photodiode array and an integrated spectral component to collect visible-range color data from 400–700 nm, with 10 nm output intervals. A full-spectrum LED source and intelligent automatic calibration support routine measurement workflows. Follow the calibration frequency and procedures defined by your quality system.

Interfaces and production-line integration

USB, RJ45, RS485 and RS232 can be considered for data exchange with a host computer, PLC, robot or production equipment. Multi-station or multi-unit monitoring should be planned around line takt time, trigger method and data architecture. API or database exchange, real-time decisions, closed-loop control and automatic machine adjustment require separate engineering review and safety validation.

Typical evaluation applications

• Inline color monitoring: track color changes, batch variation and acceptance results during production.
• Special samples: assess liquids, pastes, powders and delicate surfaces without direct probe contact.
• Robot or fixture inspection: measure at defined positions with a repeatable distance and orientation.
• Digital quality records: transfer color data through the configured interface for logging and traceability.

Potential industries include food and beverage, cosmetics, printing, anodizing, coatings, paper, automotive paint, textiles and plastics. Suitability must be validated with the actual sample and process.

YL72 and YL70 selection

Consider YL72 when a fixed 7.5 mm non-contact distance, repeatability, inline color tracking or coordinated multi-unit measurement is central to the application. You may also compare the YL70 non-contact spectrophotometer or browse the non-contact spectrophotometer range for other configurations.

Planning checklist

Before implementation, document sample type and surface, sample movement, fixed measuring distance, line speed, trigger method, installation space, interface, calibration plan and internal acceptance criteria. For PLC, robot, database or real-time decision-system integration, have an engineer review the data flow and site process.

Frequently asked questions

What samples can YL72 evaluate?
It can be evaluated for liquids, pastes, powders, delicate surfaces and other samples unsuitable for direct-contact measurement. Maintain a stable sample position and measuring distance.

What is the measuring distance?
The specified non-contact distance is 7.5 mm. The sample and probe position should remain stable; fixtures may be needed for variable sample height.

Can YL72 monitor color on a production line?
It can be evaluated with a conveyor, fixed fixture or robot using the configured interfaces and trigger method. Confirm cycle time and data handling in the actual system.

Can it connect to a PLC or host system?
USB, RJ45, RS485 and RS232 are available for integration review. Confirm the communication protocol and data format for the supplied configuration.

To discuss application fit, provide sample details, measuring distance, line speed, measurement station and communication requirements. Contact Fulcrum Technology for YL72 selection and integration guidance.