Standard Instrumentation Signal Types

The following Standard Instrumentation Signal Types shall be used in an industry.

Analogue input/output : 2 wire, 4 - 20 mA.

Digital input : Potential free contact.

Digital output: 24 VDC.

Signals between control systems and other panels shall be powered from platform control system.

Position: Proximity switches with NAMUR interface.

Pneumatic signals: 0.2 - 1.0 barg.

Instrument field bus/digital communication may be used if the concept demonstrates economical
savings and requirements to time response are satisfied.

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