IEEE / ANSI · HPX11U3

ANSI/IEEE Three-wire ultrasonic sensor form

IEEE-library form of three-wire ultrasonic sensor: this representation distinguishes a three-wire ultrasonic sensor interface from a simple contact depiction.

In plain English

What does ANSI/IEEE Three-wire ultrasonic sensor form mean?

This reference locates three-wire ultrasonic sensor in Autodesk's IEEE-oriented ultrasonic switches family. This representation distinguishes a three-wire ultrasonic sensor interface from a simple contact depiction. The public library uses HPX11U3 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.

Identify the device and formRead the connections and stateCheck 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.

What the drawings help you do

Identify supply, return and output from the selected device's terminal diagram. Three wires do not determine whether the output is sourcing, sinking or a particular voltage. Identify supply, return and output from the selected device's terminal diagram. Three wires do not determine whether the output is sourcing, sinking or a particular voltage. 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 three-wire ultrasonic sensor: this representation distinguishes a three-wire ultrasonic sensor interface from a simple contact depiction. Three wires do not determine whether the output is sourcing, sinking or a particular voltage.

Normally open / normally closed
The contact state in the normal condition defined for the drawing.
Terminal
An identified point where a conductor connects.
Signal
Electrical information passed between devices, rather than necessarily the main power supply.

Read the source: Autodesk IEEE Symbol Preview: Ultrasonic Switches

IEEE / ANSI · Normally Open 3 Wire

Autodesk IEEE Symbol Preview: Ultrasonic Switches, block HPX11U3. Matching functional counterpart linked separately. Independently drawn educational geometry; not a certified IEEE glyph or database identifier.

Shown as an independently authored educational illustration. Use the cited publication and drawing legend to verify the required drafting form.

Schematic · HPX11U3ANSI/IEEE Three-wire ultrasonic sensor form: original educational illustration
Original educational illustrationNot to scale · See source and graphic notes

What it represents

This reference locates three-wire ultrasonic sensor in Autodesk's IEEE-oriented ultrasonic switches family. This representation distinguishes a three-wire ultrasonic sensor interface from a simple contact depiction. The public library uses HPX11U3 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.

Identify supply, return and output from the selected device's terminal diagram. Three wires do not determine whether the output is sourcing, sinking or a particular voltage. Identify supply, return and output from the selected device's terminal diagram. Three wires do not determine whether the output is sourcing, sinking or a particular voltage. 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

  • Identify supply, return and output from the selected device's terminal diagram.
  • Three wires do not determine whether the output is sourcing, sinking or a particular voltage.

Information to show or reference

  • Identify the associated device, circuit or diagram boundary.
  • Identify supply, return and output from the selected device's terminal diagram.
  • Cross-reference the equipment data, terminal mapping or operating-state legend needed to interpret the form.

A distinction that matters

Three wires do not determine whether the output is sourcing, sinking or a particular voltage.

Sources you can follow

These public references support the explanation and provide further detail. Their graphics and downloadable files remain with their publishers.

Autodesk IEEE Symbol Preview: Ultrasonic Switches

Public IEEE-oriented Ultrasonic Switches table explicitly lists HPX11U3 as Normally Open 3 Wire. This supports the vendor convention context, not reproduction of the publisher graphic.

Autodesk · Public reference checked 28 October 2026 · Link only

About this graphic

This illustration was authored independently by Elora Grid to explain the concept. It is not reproduced from a customer drawing, an official standard graphic or a manufacturer CAD file. Its correspondence to an exact IEC or IEEE symbol identifier has not been certified.

SVG and DXF downloads contain this original artwork. DXF uses unscaled drawing units; a GA envelope supplies no product dimensions, clearances or fabrication information. Original artwork is available under CC BY 4.0. Third-party references retain their own terms.

Entry JSON · Entry Markdown · Last editorial update: 28 October 2026

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