Product Info

🌟 Key Takeaways
- Dust, moisture, and oil are the three major contaminants in compressed air systems.
- ISO 8573-1 provides a precise and standardized framework for air-quality evaluation.
- Root-cause analysis enables system-level problem solving rather than isolated fixes.
- Selecting the right Dryer + Filter combination based on ISO Class reduces downtime.
- Effective air-quality control lowers defect rates and improves production stability.

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Many factories face air-quality issues but struggle to identify the true source. This often leads to unnecessary spending—replacing equipment that isn’t the root cause—or recurring downtime.
ISO 8573-1 offers a structured approach that reveals contamination issues clearly and allows systematic diagnosis.

1) Why Air-Quality Analysis Matters
Air-quality measurement helps pinpoint root causes such as excessive moisture, high particle concentration, or oil contamination.
Once the contamination source is identified, corrective actions and equipment selection become much more effective.

2) Sources of Contamination
● Dust (Solid Particles)
Source: Dust from ambient air, rust flakes, metal debris
Impact: Nozzle clogging, sticking valves, inaccurate sensors

● Water (Moisture / Condensation)
Moisture forms when hot compressed air cools down and water vapor condenses.
Impact:
- Pipe corrosion
- PCB damage in electronics manufacturing
- Sensor malfunction or short circuit

Product Reference:
ICE HAS uses SUS Heat Exchanger + Turbo Tube to reduce moisture with very low pressure loss.

● Oil (Oil Aerosol / Vapor)
Source: Lubricating oil carried over from oil-flooded compressors
Impact: Product contamination, rapid filter clogging, disruption in precision processes

ICE filters remove contaminants down to 0.01 μm


3) ISO 8573-1 — Three Categories of Air Quality
| Category | Measurement Parameter | Unit |
| ------------- | ----------------------------- | ------ |
| Particles | Particle count/size | μm |
| Water | Moisture / Pressure Dew Point | °C PDP |
| Oil | Total oil aerosol + vapor | mg/m³ |

Typical ISO Class requirements:
- Electronics: Class 1–2
- Food & Beverage: Class 1–4
- General Industry: Class 5–7

4) Choosing Equipment for the Required ISO Class
- Moisture → Refrigerated Dryer (ICE HAS)
Pressure loss < 0.015 MPa (catalog page 2)
- Dust → Line Filter (HAS-L)
- Oil → Mist Filter / Carbon Filter (HAS-M / HAS-K)
Filtration down to 0.01 μm (catalog page 3)

5) Case-like Insight — Electronics Factory
Problem: High moisture level causing defects in PCB assembly
Findings: Excess particle count and PDP at +7°C, above accepted limits
Solution: ICE HAS Dryer + multi-stage filters (HAS-L/M/K)
Result: Significant reduction in downtime and improved pneumatic stability

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📘 Summary
Dust, moisture, and oil are the primary root causes of contamination in compressed air systems.
ISO 8573-1 enables structured, accurate analysis, and proper equipment selection ensures long-term stability and cost reduction.

📥 CTA
For practical application of ISO 8573-1 in real operations, the team at Hitachi Asia (Thailand) Co., Ltd., experts in clean air systems and compressed-air quality management, recommends exploring the Core Content below or consulting the relevant department.

🔗 Cluster Internal Link
• Core Content: https://prime.nc-net.com/103667/en/product_others/detail_goods/18397
• Basic Knowledge: https://prime.nc-net.com/103667/en/product_others/detail_goods/27605

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❓ FAQ
Q: How often should ISO 8573-1 testing be performed?
At least every 6–12 months, or more frequently for high-precision processes.

Q: Why can’t additional filters remove water inside the pipe?
Because water is caused by dew-point conditions. It must be treated using a dryer, not a filter.

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📚 Glossary
- ISO 8573-1: Standard for compressed air quality classification
- PDP (Pressure Dew Point): Temperature at which moisture condenses
- Oil Aerosol: Oil droplets carried from compressors
- Line Filter: Filter for dust and solid particles
- Multi-stage Filtration: Layered filtration for multiple contaminant types

📖 Reference
ICE Clean Air System Catalog – ORION / Hitachi

🔒 Trust
This content has been reviewed by Ms. Thitima Bunnag (Fon), Industrial Component & Equipment Group,
Hitachi Asia (Thailand) Co., Ltd., to ensure technical accuracy.

#ISO8573 #CompressedAir #AirQuality #AirDryer #AirFilter
#CleanAirSystem #IndustrialFactory #Pneumatic #Hitachi #AirTreatment

📆 Updated: 2025-11-28