Instrument Range Checker

Validates each instrument row against ISA best practice: normal point at 25–75% of span, max ≤ 90% of URL, alarm setpoints inside the calibrated range, and tighter margins (30–70% normal, ≤ 80% max) for SIL-rated devices per IEC 61511 / ISA-84 guidance.

CSV Input

References: ISA-20 (instrument specification forms); ISA-84 / IEC 61511 (Safety Instrumented Systems); ISA best-practice for normal-point placement (25–75% of span). SIL-rated devices follow tighter margins (30–70% normal, ≤ 80% max operating).

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