# Thermocouple with terminal board

Canonical URL: https://eloragrid.ai/symbols/iec-thermocouple-with-terminal-board
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: HTC1LTB
Drawing use: Schematic
Reference families: IEC, Manufacturer

## Symbol convention

Convention: IEC
Form: Thermocouple with terminal board
Autodesk IEC-60617 Symbol Preview — Instrumentation and sensor family reference; vendor family reference, not certified IEC geometry or database identifier.

This representation distinguishes a thermocouple circuit expanded to show its terminal-board interface.

## What it represents

This representation distinguishes a thermocouple circuit expanded to show its terminal-board interface.
Coordinate thermocouple polarity, terminal identity and the specified extension/compensating conductors.
Adding a terminal board does not make a thermocouple circuit an ordinary copper voltage circuit.

## How to read it

- Coordinate thermocouple polarity, terminal identity and the specified extension/compensating conductors.
- Adding a terminal board does not make a thermocouple circuit an ordinary copper voltage circuit.

## Information to show or reference

- Identify the associated device, circuit or diagram boundary.
- Coordinate thermocouple polarity, terminal identity and the specified extension/compensating conductors.
- Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

## Important distinction

Adding a terminal board does not make a thermocouple circuit an ordinary copper voltage circuit.

## Facts

- Reference scope: Specific public IEC-context family form
- Publisher reference token: HTC1LTB, HTC1RTB (Autodesk token; not a verified IEC database ID)
- Information added: Coordinate thermocouple polarity, terminal identity and the specified extension/compensating conductors.
- Preview: Independent educational concept; consult the publisher and applicable standard for the exact graphic

## Public references

- [AutoCAD Electrical: Instrumentation and sensors](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-773A36C3-44C6-43EB-9BD0-E0297816B9B2.htm) — Autodesk. Official public publisher family name and reference context; vendor identifiers and graphics are distinct from licensed IEC database content.

## Graphic scope

Independent original educational concept illustration by Elora Grid. Not a certified standards graphic or manufacturer footprint. Unitless; not to scale. Original artwork licence: https://creativecommons.org/licenses/by/4.0/. Publisher material is linked only.