whatsapp button
Particle Counter Sensor

Particle Counter Sensor
Parent Product
Oil Particle Counters
Standards
ISO 11171
ISO 4402
ISO 4406
NAS 1638
ROCT 17216
SAE AS4059
View PDF

Particle Counter Sensor - QualiOPC™ 60

Particle Counter Sensor performance shapes the accuracy of any oil cleanliness system. QualiOPC™ 60 is a compact optical sensor built for liquid particle sizing and counting in portable, inline, and laboratory contamination monitoring systems. Particle Counter Sensor - QualiOPC™ 60 is a precision analytical module for detecting solid particles suspended in liquids using the optical light-blocking method.

This sensor is intended for integration into advanced oil and liquid particle counter platforms used in predictive maintenance, fluid condition monitoring, and quality control. This model is rugged, compact, and suitable for portable or fixed installations, with support for internationally recognized cleanliness and calibration practices such as ISO 4402 and ISO 11171.

QualiOPC™ 60 is a Particle Counter Sensor designed for precise measurement of particle contamination in industrial liquids. It is used as the sensing core in portable particle counters, online particle counters, and laboratory fluid cleanliness instruments where reliable particle sizing and counting are required.

The sensor uses semiconductor laser optics and the light-blocking principle to detect suspended particles across a broad particle size range. Its compact cylindrical design supports easier integration into system modules for condition-based maintenance, contamination control, and fluid health analysis in field or lab settings.

Particle Counter Sensor - QualiOPC™ 60 Applications

  • Hydraulic Oil Monitoring: QualiOPC™ 60 is suitable for hydraulic oil monitoring where wear debris and contamination levels need to be tracked for predictive maintenance.
  • Lubricating Oil Analysis: the sensor can be integrated into systems that measure particulate contamination in industrial and mechanical lubricants. This helps assess fluid cleanliness and overall lubricant condition.
  • Transformer Insulating Oil Testing: that makes the sensor relevant for power generation and transmission equipment where dielectric fluid cleanliness matters.
  • Gear, Engine, and Aviation Fuel Inspection: these use cases support particle contamination analysis for rotating equipment, engines, and fuel cleanliness verification.
  • Inline Industrial Fluid Monitoring: because the sensor is described as compatible with portable and online particle counter systems, it also fits real-time industrial fluid condition monitoring where contamination tracking is built into a larger instrument platform.
Particle Counter Sensor - QualiOPC™ 60

Standards

  • ISO 4402 – fluid particle counting calibration reference
  • ISO 11171 – calibration and verification reference for automatic particle counters
  • ISO 4406 – fluid cleanliness coding
  • NAS 1638 – aerospace fluid contamination classification
  • SAE AS4059 – aerospace and industrial fluid cleanliness classification
  • ROCT 17216 – particle contamination classification standard

Particle Counter Sensor - QualiOPC™ 60 Key Features

  • Optical light-blocking detection for accurate liquid particle sizing and counting.
  • High-sensitivity optical design for stable performance and strong resolution in contamination detection.
  • Fine particle size channel resolution,a representative fine interval of 0.1 µm depending on system configuration.
  • Broad application compatibility for portable, online, and laboratory particle counter systems.
  • Compact, rugged construction for long-term use in field instruments or fixed installations.
  • Calibration support aligned with ISO 4402 and ISO 11171.
  • Semiconductor laser light source.
  • Broad particle size capability from 1 µm to 500 µm.
  • Repeatability RSD below 2%.
  • Detection speed and cleaning speed 5 to 60 mL/min, with a default of 25 mL/min for detection.

Theory and Method

QualiOPC™ 60 works on the optical light-blocking method. As particles pass through the sensing zone, they interrupt the laser beam, and the system converts those signal changes into particle size and count information.

This method is widely used in liquid contamination monitoring because it supports direct measurement of suspended solid particles in oils and related fluids. The sensor as a high-sensitivity optical component designed for stable performance, fine resolution, and repeatable measurement in integrated particle counter systems.

Particle Counter Sensor - QualiOPC™ 60 Technical Specification

ParameterQualiOPC™ 60
ModelQualiOPC™ 60
Product TypeParticle Counter Sensor
Light SourceSemiconductor laser
Detection PrincipleOptical light-blocking method
Particle Size Range1 μm to 500 μm
Sensitivity1 μm (ISO 4402) or 4 μm(c) / 4 μm based on ISO 11171
Detection Speed5 to 60 mL/min, default 25 mL/min
Cleaning Speed5 to 60 mL/min
Coincidence Error Limit12,000 to 40,000 particles/mL
RepeatabilityRSD < 2%
Sample Temperature0°C to 80°C
Length214 mm
Maximum Height115 mm
Head Diameter52 mm
Tail Diameter46 mm
MountingMovable fixture, M4 screw mounting
CompatibilityPortable and online particle counter systems
Calibration SupportISO 4402, ISO 11171

Request
Quotation

Back to Main Page

Oil Particle Counters