# ANSI/IEEE Capacitive proximity switch form

Canonical URL: https://eloragrid.ai/symbols/ansi-capacitive-proximity-switch
Publisher: Elora Grid
Updated: 2026-10-28
Lookup label: PROX CAP
Drawing use: Schematic
Reference families: IEEE / ANSI, Manufacturer

## Symbol convention

Convention: IEEE / ANSI
Form: Capacitive
Autodesk IEEE Symbol Preview: Capacitive Switches, block HPX1C. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.
Related representation: [Capacitive proximity switch](https://eloragrid.ai/symbols/capacitive-proximity-switch)

IEEE-library form of capacitive proximity switch: a capacitive proximity switch detects a target through a change in its sensing capacitance.

## In plain English

### What does ANSI/IEEE Capacitive proximity switch form mean?

This reference locates capacitive proximity switch in Autodesk's IEEE-oriented capacitive switches family. A capacitive proximity switch detects a target through a change in its sensing capacitance. Its supply and switching output are shown separately from the target or process material. The public library uses HPX1C for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.

### A simple example

Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.

### What the drawings help you do

Read sensitivity and target conditions from the product selection. Capacitive sensing is different from inductive metal-target sensing. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.

### This particular reference

IEEE-library form of capacitive proximity switch: a capacitive proximity switch detects a target through a change in its sensing capacitance. Capacitive sensing is different from inductive metal-target sensing.

### Terms

- Normally open / normally closed: The contact state in the normal condition defined for the drawing.
- Signal: Electrical information passed between devices, rather than necessarily the main power supply.
- Rating: A value stating the conditions for which equipment is specified.

Concept diagram: Identify the device and form → Read the connections and state → Check the equipment reference
A guide to reading this reference. The original symbol illustration and its drawing notes appear below; these boxes are not a wiring diagram.

- [Autodesk IEEE Symbol Preview: Capacitive Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-0A02EC13-587A-4116-8052-B5C587CC11D0.htm)


## What it represents

This reference locates capacitive proximity switch in Autodesk's IEEE-oriented capacitive switches family. A capacitive proximity switch detects a target through a change in its sensing capacitance. Its supply and switching output are shown separately from the target or process material. The public library uses HPX1C for its horizontal representation; this is a vendor block name, not an IEEE standards symbol number.
Read the operating mechanism and the contact reference state together. Cross-reference every associated contact to the same device and show which movement, signal or reset changes its condition; the symbol alone does not establish the complete switching sequence.
Read sensitivity and target conditions from the product selection. Capacitive sensing is different from inductive metal-target sensing. The linked functional counterpart explains the same operating role in its own drawing context; agreement of every detailed convention mark is not asserted.

## How to read it

- Read sensitivity and target conditions from the product selection.
- The preview is an original explanation of this function. Match the actual drawing convention to its legend and the selected equipment documentation.

## Information to show or reference

- Identify supply terminals
- State output function
- Reference target material and sensitivity

## Important distinction

Capacitive sensing is different from inductive metal-target sensing.

## Facts

- Convention evidence: Autodesk IEEE Symbol Preview: Capacitive Switches; published form: Capacitive.
- Public vendor block: HPX1C. Vendor library token, not an IEEE symbol number.
- Drawing role: Actuated indication
- Identifier status: The short label is a functional lookup label, not an assigned IEC or IEEE symbol number. Any separately listed Autodesk code is a verified vendor block name.
- Artwork scope: Original educational geometry. Exact standard graphics, product ratings and terminal pinouts are not certified.

## Public references

- [Autodesk IEEE Symbol Preview: Capacitive Switches](https://help.autodesk.com/cloudhelp/2021/ENU/AutoCAD-Electrical/files/GUID-0A02EC13-587A-4116-8052-B5C587CC11D0.htm) — Autodesk. Public IEEE-oriented Capacitive Switches table explicitly lists HPX1C as Capacitive. This supports the vendor convention context, not reproduction of the publisher graphic.

## 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.