Radar and ultrasonic level sensors are both used for non-contact level measurement, but they are not selected in the same way. The right RFQ should describe the medium, tank, range, process condition and mounting location before comparing price or delivery.
Simple comparison
| Point | Radar level sensor | Ultrasonic level sensor |
|---|---|---|
| Measuring principle | Uses radar signals for continuous level measurement. | Uses ultrasonic pulses and echo time from the measured medium. |
| Typical strength | Often preferred when process conditions are more demanding or the application needs stronger measurement stability. | Often considered for simpler standard applications where conditions are moderate. |
| Application details | Check antenna, frequency, range, pressure, temperature, foam, dust, vapor and mounting. | Check range, sound path, foam, vapor, temperature, dust, obstruction and mounting. |
| RFQ risk | Do not quote only by tank height. Process and mounting details still matter. | Do not assume it fits every open tank. Echo path and process condition must be reviewed. |
When radar may be a better starting point
Radar is often the first option when the site needs a more robust non-contact level measurement discussion for liquids or bulk solids. VEGA official material positions VEGAPULS 6X as a universal radar sensor for continuous level measurement across many liquid and bulk-solid applications.
When ultrasonic may be enough
Ultrasonic level measurement can be a practical option for simple standard applications. VEGA describes ultrasonic sensors as emitting pulses toward the medium and using the reflected signal time for level measurement.
Information to send with the RFQ
- Medium name, liquid or solid, density and any foam, vapor, dust or turbulence.
- Tank height, measuring range, nozzle size, mounting position and obstructions.
- Process pressure, temperature, hazardous-area requirement and material compatibility.
- Power supply, output signal, display, communication and required certificates.
- Existing model code or nameplate photo if replacing a sensor.
Related JSSS Nova pages
For brand support, review VEGA level measurement products. For category sourcing, see Level Measurement. To request a quote, send details through the RFQ page.
Source notes
Technical wording was checked against official VEGA pages for VEGAPULS radar level sensors and VEGASON ultrasonic level measurement. Final selection should follow current datasheets and site conditions.
FAQ
Is radar always better than ultrasonic?
No. Radar is often stronger for demanding conditions, but ultrasonic can still be suitable for simple applications.
Can I choose by measuring range only?
No. Range matters, but medium, foam, vapor, dust, pressure, temperature and mounting can decide the sensor type.
What if I only have the old model number?
Send the old model number and a nameplate photo. Replacement review may still need tank and process details.
Can Shengshi suggest a brand or model?
Shengshi can help review sourcing options after the application details are available. Final selection should be confirmed against the project requirement.