Introduction
Infralytic GmbH, a leader in infrared (IR) oil film thickness sensor technology, presents the latest advancements in their product line with the introduction of the NGO3 model. This document compares the NGO3 with its predecessor, the NGO2, highlighting improvements and technical specifications.

Technical Specifications

• Measurement Method: Both models use infrared spectroscopy.
• Measured Variables: NGO2 measures oil layer in g/m², while NGO3 measures in both g/m² and mg/m².
• Distance to Strip: NGO2 operates at 120 mm, whereas NGO3 extends to 200 mm.
• Allowed Strip Height Deviations: NGO2 allows ±10 mm, and NGO3 allows ±20 mm.
• Mechanical Dimensions: NGO2 is 337 x 257 x 88 mm, and NGO3 is 519 x 264 x 100 mm.
• Weight: NGO2 weighs 7.8 kg, and NGO3 weighs 8 kg.
• Ambient Temperature Range: NGO2 operates from +5 °C to +40 °C, while NGO3 extends up to +55 °C.
• Measurement Frequency: NGO3 offers a range from 60 Hz to 450 Hz, with a default of 120 Hz.
• Measurement Range: NGO2 measures from 0.5 – 6 g/m², with special calibration possible from 0.05 g/m². NGO3 standard range is 0.3 – 6 g/m², with special calibration possible from 0.02 g/m².
• Strip Materials: Both models are compatible with all metals and ceramics.
• Quantifiable Coatings: NGO2 measures lubricants and mineral oils, while NGO3 can measure all translucent organic substances.
• Repeatability and Accuracy: NGO3 offers improved repeatability and accuracy with specialized calibrations.
• Window Cleaning Period: NGO2 requires cleaning every week, while NGO3 extends this to three months.

Electrical and Data Requirements

• Electrical Requirements: Both models require 24 V, 1A + 5-9 V, 6A.
• Data Transfer: NGO2 uses RS 422, while NGO3 offers RS 422 or Ethernet.
• Data Format: NGO3 uses Modbus.
• Air Requirements: NGO3 offers more flexible air requirements depending on environmental conditions.
• Protection Class: Both models are rated IP65.

Innovations and Improvements in NGO3

• Improved signal-noise ratio by a factor of more than 5.
• Doubled measuring rate.
• Thermally compensated detection.
• Enhanced internal light guides and reflectors.
• Thermally decoupled spectrometer.
• Reduced soiling of light exit glasses and detector window.
• Intelligent calibration management.
• Modular construction and simple assembly.
• Three-year guarantee on lamps with easy exchange.

Conclusion
The NGO3 model represents a significant advancement in IR oil film thickness measurement technology, offering enhanced accuracy, flexibility, and ease of maintenance compared to the NGO2 model.