Measuring Compressed Air Quality According to ISO 8573-1

CS INSTRUMENTS provides reliable systems and instruments to measure residual oil and particle counts in compressed air and gas—available in both stationary and mobile versions. We ensure accurate, continuous monitoring that helps maintain ISO 8573 compliance, protect end-product quality, and reduce downtime. Choose our reliable air quality measurement solutions today!

Visit: https://www.cs-instruments.com/za/applications/compressed-air-quality/measuring-compressed-air-quality-according-to-iso8573/

1. RELIABLE AIR QUALITY MEASUREMENT
SOLUTIONS BY CS INSTRUMENTS
MEASURING
COMPRESSED AIR
QUALITY ACCORDING
TO ISO 8573-1
MEASURING
COMPRESSED AIR
QUALITY ACCORDING
TO ISO 8573-1

2. COMPRESSED AIR QUALITY AND
ISO 8573 REQUIREMENTS
Compressed air is an important medium in industrial,
automated production. The ISO 8573 standard defines the
key impurities that affect compressed air systems — including
particles, water, oil, vapours, and microbiological
contaminants.
CS INSTRUMENTS' customised solutions for stationary and
portable monitoring offer continuous, real-time monitoring to
prevent contamination and reduce system downtime.

3. ISO 8573 consists of multiple parts covering contaminants
and purity classes:
ISO 8573 STANDARD
OVERVIEW
Part 1: Impurities and cleanliness classes
Part 2: Test methods for oil aerosol content
Part 3: Test methods for humidity
Part 4: Solid particle content
Part 5: Oil vapour & organic solvent content
Part 6: Gaseous pollutants
Part 7: Microbiological contamination
Parts 8 & 9: Mass concentration and liquid water content
Here, we explore inline systems for continuous monitoring of oil
aerosols, dew point moisture, and particulate matter, including
microbiological contamination.

4. INLINE MEASUREMENT
METHODS & ADVANTAGES
Modern measuring systems use PID sensor
technologies for online detection of oil vapours,
enabling continuous display and detection of
peaks.
Sensors are connected via ball valves or quick
couplings, allowing continuous analysis with
minimal interruption.
Measured values can be recorded and trigger
alarms when thresholds are exceeded, providing
real-time protection and insight.

5. 1
2
3
KEY PRODUCTS &
THEIR ROLES
4
OIL CHECK 500:
Enables permanent, highly accurate
measurement of vaporous residual oil
content from 0.001 mg/m³ to 4 mg/m³,
supporting monitoring across the entire
measuring range for compressed air
quality class 1.
Particle Counter PC 400:
A high-precision optical particle counter
that measures particles from 0.1 µm. It is
suitable for monitoring compressed air
quality class 1.
Dew Point Sensor FA 510:
Monitors pressure dew point down to –
80°Ctd and enable continuous
measurement to trigger alerts if dryers
fail.
DS 500 Chart Recorder:
Central component: measures and
documents data from residual oil,
moisture, and particle sensors. Features
alarm relays, graphical display, data
logging, and multiple sensor inputs.

6. WHY CHOOSE CS INSTRUMENTS
FOR AIR QUALITY MEASUREMENT
CS INSTRUMENTS provides reliable systems and
instruments to measure residual oil and particle
counts in compressed air and gas—available in
both stationary and mobile versions. We ensure
accurate, continuous monitoring that helps
maintain ISO 8573 compliance, protect end-
product quality, and reduce downtime. Choose our
reliable air quality measurement solutions today!

7. www.cs-instruments.com/za
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