# Radar level sensing function

Canonical URL: https://eloragrid.ai/symbols/radar-level-sensor
Publisher: Elora Grid
Updated: 2026-10-27
Lookup label: RAD LVL
Drawing use: Schematic
Reference families: Manufacturer

A radar sensing function uses radio-frequency signals to obtain information about a target or surface.

## In plain English

### What does Radar level sensing function mean?

A radar sensing function uses radio-frequency signals to obtain information about a target or surface.

### A simple example

A suitable level installation can interpret reflections from the measured surface.

### What the drawings help you do

Show the sensor’s radio-frequency path towards the measured surface and identify the reported level reference. A distance to the surface and a level within a vessel are related through the selected geometry. They should not be treated as identical values without defining the reference points.

### Before using this reference

- Identify the measured surface and level reference.
- Reference the selected sensor and installation geometry.
- Show the electrical output and receiving control system.

### Is measured distance automatically the liquid level?

The relationship depends on the sensor position and vessel reference. The selected configuration converts the sensing result into the intended level quantity; the functional graphic does not supply that geometry.

### Terms

- Level reference: The defined point from which the reported level is measured.
- Reflection: The returned radio-frequency signal used by the sensing method.

Concept diagram: Radio reflections from surface → Radar sensing function → Configured level information
Original functional explanation. Arrows show information or energy roles; two-headed arrows identify two-way interfaces. This is not a pinout, certified standards graphic or complete circuit.

- [Radar level-transmitter architecture](https://www.ti.com/solution/level-transmitter)


## What it represents

A radar sensing function uses radio-frequency signals to obtain information about a target or surface.
A suitable level installation can interpret reflections from the measured surface.
Show the sensor’s radio-frequency path towards the measured surface and identify the reported level reference. A distance to the surface and a level within a vessel are related through the selected geometry. They should not be treated as identical values without defining the reference points. This is original functional artwork, not a certified standard graphic or device pinout.

## How to read it

- Identify the measured surface and level reference.
- Reference the selected sensor and installation geometry.
- Show the electrical output and receiving control system.
- The sensing principle does not establish suitability for every vessel, material or installation.

## Information to show or reference

- Identify the measured surface and level reference.
- Reference the selected sensor and installation geometry.
- Show the electrical output and receiving control system.

## Important distinction

The sensing principle does not establish suitability for every vessel, material or installation.

## Facts

- Representation type: Original functional block; not a certified IEC or IEEE graphic
- Concept input: Radio reflections from surface
- Concept output: Configured level information

## Public references

- [Radar level-transmitter architecture](https://www.ti.com/solution/level-transmitter) — Texas Instruments. Primary-source technical context for this particular function; product-specific ratings remain with the manufacturer.

## 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.