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ISO 11171
ISO 11171 is an international standard for calibrating liquid particle counters. As the functionality of hydraulic fluids suffers when contaminated with particles, particle counters are used for contamination control. The particle counter determines the concentration and the size distribution of the particles. Therefore, the accuracy of the liquid particle counter has to be established through calibration. According to ISO 11171 for the primary particle-sizing calibration National Institute of Standards and Technology, NIST SRM 2806 suspension{{clarify, date=December 2013 has to be used. In annex "F" of ISO 11171, preparation of secondary calibration suspension is described. In general ISO 11171 specifies procedures for two different subjects: * sample preparation * sensor calibration (particle-sizing calibration, coincidence error, resolution and Volumetric flow rate, flow rate limit determination etc.) Source document * ISO 11171:2010(E) ''Hydraulic fluid power – Calibration o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Particle Counter
A particle counter is used for monitoring and diagnosing particle contamination within specific clean media, including air, water and chemicals. Particle counters are used in a variety of applications in support of clean manufacturing practices, industries include: electronic components and assemblies, pharmaceutical drug products and medical devices, and industrial technologies such as oil and gas. Technology Particle counters function primarily using the principles of light scattering, although other technologies may also be employed. Light scattering by particles use instrumentation comprising a high-intensity light source (a laser), a controlled media flow (air, gas or liquid) and highly sensitive light-gathering detectors (a photo detector). Laser optical particle counters employ five major systems: #Lasers and optics: A laser operates on a single wavelength, so the light source is consistent with constant power output to illuminate the particle sampling region. #Control ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
