# ANSI/IEEE float level switch no symbol

Canonical URL: https://eloragrid.ai/symbols/ansi-float-level-switch-no
Publisher: Elora Grid
Updated: 2026-10-14
Lookup label: LS FLOAT NO
Drawing use: Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Autodesk IEEE-oriented Miscellaneous Switches functional form
Autodesk explicitly publishes this block under IEEE Symbol Preview. The counterpart is the matching functional concept; no equivalence of every detailed standard graphic is asserted.
Related representation: [Float level switch NO](https://eloragrid.ai/symbols/float-level-switch-no)

IEEE-oriented graphical reference for float level switch no, with public vendor evidence and drawing-reading notes.

## What it represents

The float-operated NO form connects a discrete electrical action to a defined liquid-level mechanism. The drawing must identify the vessel or location and the direction of level movement that actuates the contact.
This is a convention-specific lookup based on the publisher's IEEE-labelled preview. The geometry here is independently drawn to explain the connection or operation; it is not a certified reproduction of the standard graphic.

## How to read it

- Match the electrical reference state to the documented float orientation.
- Read the selected library and the project legend together. A vendor block identifier is meaningful within its named library and is not a universal standard-symbol code.

## Information to show or reference

- Name vessel/location
- State level direction
- Reference operating/reset levels

## Important distinction

Float level sensing is different from a continuous analog level transmitter.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview — Miscellaneous Switches
- Public vendor block name: HFL11 (Autodesk identifier; not an IEEE symbol number)
- Standards context: IEEE/ANSI 315-1975 covers diagram graphics. IEEE lists this edition as Inactive-Reserved.
- Artwork scope: Original functional illustration; exact standard glyph and compliance are not certified

## Public references

- [Autodesk IEEE Symbol Preview — Miscellaneous Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-278F6C21-B1A6-4EA1-A535-E78D53BBD10D.htm) — Autodesk. Exact public IEEE-oriented category page verifying the component name and vendor block identifier.
- [IEEE/ANSI 315-1975: graphic symbols for electrical and electronics diagrams](https://standards.ieee.org/ieee/315/515/) — IEEE Standards Association. Graphic-symbol standards context and official status; not a source of reproduced artwork.

## 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.