ISA 7.0.01 : 1996

1 Scope
2 Purpose
3 Definitions
4 Instrument air system design
5 Instrument air, quality standard
  5.1 Pressure dew point
  5.2 Particle size
  5.3 Lubricant content
  5.4 Contaminants
Annexes
A - References
B - Equipment and application guidelines for producing
    instrument air
    B.1 - Instrument air system design
    B.2 - Air quality considerations
    B.3 - Instrument air supply pressure and pneumatic
          pressure transmission signal
C - Guideline for testing pneumatic systems
    C.1 - Application
    C.2 - Inspections and testing
    C.3 - Tests

ISA-7.0.01-1996, Quality Standard for Instrument Air, focuses on instrument air used in pneumatic control and measurement systems. This standard specifies limits for moisture content, particle size, lubricant presence and contaminants to maintain the reliability and performance of pneumatic devices such as controllers, transmitters and valve actuators. It also describes typical system design elements, including compressors, filters, dryers and pressure regulators, along with recommended testing methods for air quality parameters like dew point, oil content and particulate matter. The goal is to improve management of instrument air systems to reduce equipment problems caused by moisture, contamination and improper pressure levels, thus supporting more consistent operation of instrumentation and control equipment across various industries.