Side-by-side reference

Understand the difference.

Compare the meaning, drawing context and source references of two entries. A similar graphic or shared abbreviation does not establish equivalence.

First referenceCompare with

IEEE / ANSI

ANSI/IEEE impulse tachometric dynamo symbol

The impulse form represents a speed transducer whose output is a pulse train, for example a magnetic pickup reading gear teeth or a pulse generator on the shaft. The receiving device counts pulses, so the number of pulses per revolution is the scaling factor that must accompany the symbol.

Drawing use: Schematic
Application: Metering & protection
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Instrumentation and Sensors form: Tachometric Dynamo - Impulse. Autodesk publishes this block under its IEEE Symbol Preview. The counterpart is the matching functional concept in the library; no equivalence of every detailed standard graphic is asserted.

A distinction that matters

An impulse transducer outputs a pulse rate; a tachometric dynamo outputs an analogue voltage.

Full reference

HIN1B12

IEC

Impulse tachometric transducer

This representation distinguishes an impulse-output speed-measurement function.

Drawing use: Schematic
Application: Metering & protection
Reference family: IEC / Manufacturer
Form evidence: Impulse tachometric transducer. Autodesk IEC-60617 Symbol Preview — Instrumentation and sensor family reference; vendor family reference, not certified IEC geometry or database identifier.

A distinction that matters

A pulse output must not be treated as a continuous analogue speed voltage.

Full reference

Original educational previews. Follow the source references on each full entry for the appropriate standard or selected product.