Search Results

Standard

PARTICLE COUNT DATA CONVERSION AND EXTRAPOLATION

1993-01-01

HISTORICAL

AIR877

This report describes a mathematical model which can be used to analyze particle count data. Particle counts which fit the model can be graphically displayed. converted from one counting size-frequency range to another, and extrapolated to estimate counts beyond the measured range. Derivation, applications and calculations are described.

Standard

METHOD FOR CALIBRATION AND VERIFICATION OF AUTOMATIC LIQUIDBORNE PARTICLE COUNTER (LIGHT METHOD)

1971-10-01

HISTORICAL

ARP1192

This Aerospace Recommended Practice covers the calibration and verification of automatic liquid-borne particle counter for the determination of the concentration by number and size distribution of particles in aerospace liquids. This method is intended for the standardization of automatic liquid-borne particle counting instrumentation.

Standard

PROCEDURE FOR CALIBRATION AND VERIFICATION OF LIQUID-BORNE PARTICLE COUNTER: AN ABSOLUTE STANDARD

1978-10-01

HISTORICAL

ARP1192A

This ARP describes procedure for determining the counting and sizing accuracy for an automatic liquid-borne particle counter (APC). This procedure is used in conjunction with a suspension of precisely sized spherical particles.

Standard

FILTER PATCH TESTING PROCEDURES FOR AEROSPACE HYDRAULIC NON-ROTATING EQUIPMENT

1991-11-01

HISTORICAL

ARP1302

These recommendations are written to cover the subject of obtaining filter patch test samples from aerospace hydraulic equipment of the categories shown below. The same procedure shall apply regardless of the unit category.

Standard

FILTER PATCH TESTING PROCEDURES FOR AEROSPACE HYDRAULIC PUMPS AND MOTORS

1991-11-01

HISTORICAL

ARP575A

These recommendations are written to cover the subject of obtaining filter patch test samples from aerospace hydraulic units of the categories shown below. The same procedure shall apply regardless of the unit drive category.

Standard

DEGRADATION LIMITS OF MIL-H-5606B HYDRAULIC FLUID

1968-01-01

HISTORICAL

AIR810A

Standard

AEROSPACE-CLEANLINESS CLASSIFICATION FOR HYDRAULIC FLUIDS

1990-03-30

HISTORICAL

AS4059A

This SAE Aerospace Standard defines cleanliness levels for particulate contamination of hydraulic fluids and includes methods of reporting data relating to the contamination levels. The contamination levels selected are an extension and simplification of the widely accepted NAS 1638.

Standard

AEROSPACE-CLEANLINESS CLASSIFICATION FOR HYDRAULIC FLUIDS

1995-03-01

HISTORICAL

AS4059B

This SAE Aerospace Standard (AS) defines cleanliness levels for particulate contamination of hydraulic fluids and includes methods of reporting data relating to the contamination levels. The contamination levels selected are an extension and simplification of the widely accepted NAS 1638.

Standard

Aerospace Fluid Power - Cleanliness Classification for Hydraulic Fluids

2000-08-01

HISTORICAL

AS4059C

This SAE Aerospace Standard (AS) defines cleanliness levels for particulate contamination of hydraulic fluids and includes methods of reporting data relating to the contamination levels. The contamination levels selected are an extension of the widely accepted NAS 1638 cleanliness levels.

Standard

AEROSPACE-CLEANLINESS CLASSIFICATION FOR HYDRAULIC FLUIDS

1988-06-14

HISTORICAL

AS4059

This SAE Aerospace Standard defines cleanliness levels for particulate contamination of hydraulic fluids and includes methods of reporting data relating to the contamination levels. The contamination levels selected are an extension and simplification of the widely accepted NAS 1638.

Standard

PROCEDURE FOR THE DETERMINATION OF PARTICULATE CONTAMINATION OF HYDRAULIC FLUIDS BY THE PARTICLE COUNT METHOD

1991-11-01

HISTORICAL

ARP598

This test describes a self-checking procedure for the determination of particulate contaminant five microns or greater in size in hydraulic fluids by the particle count method. A maximum variation of two to one (±33% of the average of two runs) in results should be expected for replicate counts on the same sample, providing that the procedure is followed closely and the precautions presented on pages 10 and 11 of the procedure, regarding manipulation, check samples and self-checking aspects, are observed.