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

PYR

IEEE / ANSI

ANSI/IEEE thermometer/pyrometer symbol

Pyrometer indication is used where temperatures are too high for ordinary thermometers, such as furnaces, kilns and exhaust gas. The instrument is commonly fed from a thermocouple or an optical radiation sensor, so the input wiring and any cold-junction compensation must be shown with the instrument.

Drawing use: Schematic
Application: Metering & protection
Reference family: IEEE / ANSI / Manufacturer
Form evidence: Autodesk IEEE-oriented Instrumentation and Sensors form: Thermometer/Pyrometer. 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

The pyrometer form signals a high-temperature indicator; the general thermometer form covers ordinary temperature indication.

Full reference

HIN1P25

IEC

Pyrometer indication

A pyrometer indication identifies the documented temperature-measurement display function.

Drawing use: Schematic
Application: Metering & protection
Reference family: IEC / Manufacturer
Form evidence: Pyrometer indication. 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 temperature display symbol does not determine whether the measurement uses contact or non-contact sensing.

Full reference

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