ISA 7.0.01

The scope of this Standard is

a) to provide limits for moisture content in instrument qualityair;

b) to provide limits for entrained particle size and oil contentin instrument quality air;

c) to establish an awareness of possible sources of corrosive ortoxic contamination entering the air system through the compressorsuction, plant air system cross connection, or instrument airconnections directly connected to processes;

d) to establish standard air supply pressures (with limitvalues) and operating ranges for pneumatic devices;

e) to specify ranges of pneumatic transmission signals used inmeasurement and control systems between elements of systems. Itincludes, but is not limited to, the following:

1) Pneumatic controllers

2) Pneumatic transmitters and information transmissionsystems

3) Current-to-Pressure transducers

4) Pneumatic control loops; and

f) to establish criteria for testing compliance withinstrument-quality air standards.

Purpose

The purpose of this Standard is to establish a standard forinstrument quality air.

Edition:

96

Published:

01/01/1996

ANSI:

ANSI Approved

Number of Pages:

34

File Size:

1 file , 470 KB