DF555 Ultrasonic Level Sensor
DF555 Ultrasonic Level Sensor
Non-Contact Ultrasonic Level Monitor with Standard and ATEX Versions
DF555 provides non-contact ultrasonic level measurement up to 5 m for liquid and solid surfaces. Available in standard (blue ABS) and ATEX explosion-proof (orange ABS+PC) versions with NB-IoT, LoRaWAN, 4G LTE, and multi-tech wireless connectivity, battery or DC power, and optional GPS and Bluetooth configuration.
Last updated: May 31, 2026
Customer Value
Built for top-mounted level monitoring where non-contact measurement is needed
Non-Contact Ultrasonic
Measures distance to liquid or solid surfaces without touching the medium. Suitable for closed containers, open tanks, and open water areas up to 5 m.
Standard + ATEX Versions
Choose the blue ABS standard version for general use or the orange ABS+PC ATEX version with explosion-proof certification for hazardous-area applications.
Flexible Power Options
Battery-powered with ER26500 x1 (8500 mAh, 1+ year at 4 uploads/day) or DC power supply option for continuous operation without battery replacement.
Multiple Wireless Versions
NB-IoT, LoRaWAN, 4G LTE, and multi-tech versions support different regional network conditions for global deployment.
Volume Calculation
Cloud platform can calculate tank volume based on container dimensions, providing level, volume, trends, and alert notifications.
Optional Features
Optional GPS/BEIDOU positioning, Bluetooth configuration, and DC power supply support flexible deployment and maintenance.
Hard Facts
Hard facts for product evaluation
Maximum ultrasonic detection range
Blind area for installation planning
Level measurement accuracy
Waterproof protection rating
Battery capacity at 3.6 V
Battery life at 4 uploads/day
Sensor weight, 122.5x95x95 mm
Standard + ATEX explosion-proof
Applications
Ultrasonic level sensing for tanks, containers, rivers, and industrial sites
DF555 is suitable for projects where non-contact top-mounted measurement is practical. The ATEX version extends applicability to explosion-proof hazardous-area environments.
Comparison
DF555 vs DF572 Level Sensors
Use this comparison to choose between DF555 (ultrasonic) and DF572 (radar) for your level monitoring project.
| Selection factor | DF555 Ultrasonic Level Sensor | DF572 Radar Level Sensor |
|---|---|---|
| Measurement principle | Ultrasonic, non-contact | 24GHz radar, non-contact |
| Maximum range | Up to 5 m, 20 cm blind area | Up to 8 m, 25 cm blind area |
| Accuracy | 3 cm | +/-20 mm |
| Battery | ER26500 x1, 8500 mAh | ER26500 x3, 25500 mAh |
| Battery life | More than 1 year at 4 uploads/day | More than 5 years under reference conditions |
| Protection | IP67 | IP68 / IK10 |
| Special versions | Standard + ATEX explosion-proof | Standard versions only |
| Wireless options | NB-IoT, LoRaWAN, 4G, Multi-tech | Cat-1/4G, Multi Tech, LoRaWAN, NB-IoT |
| When to choose | Choose DF555 when ultrasonic technology fits the environment, ATEX certification is needed, or DC power is preferred. | Choose DF572 when longer range (8 m), higher accuracy (+/-20 mm), longer battery life, and IP68/IK10 protection are required. |
Product Video
DF555 ultrasonic distance sensor demonstration
Watch the DF555 standard version demonstration video. For the ATEX explosion-proof version usage, see the DF555 User Video.
Selection Guide
How to Choose the Right DF555 Configuration
Selecting the right DF555 version depends on the environment classification, tank structure, network coverage, and power preferences.
Where to Buy
Request a DF555 project quotation
DF555 is sold by quotation. Share the application environment, required range, standard or ATEX version, preferred wireless network, and expected rollout scale so CNDINGTEK can confirm the suitable configuration and prepare a project quotation.
Useful inputs for faster quoting
- Standard or ATEX explosion-proof version
- Container type, mounting height, and target measurement range
- Preferred NB-IoT, LoRaWAN, 4G, or multi-tech network
- Power preference (battery or DC), quantity, and delivery schedule
FAQ
Frequently Asked Questions about DF555 Ultrasonic Level Sensor
What is the measuring range of the DF555 ultrasonic level sensor?
DF555 supports non-contact ultrasonic level measurement up to 5 m (500 cm), with a 20 cm blind area. It can measure liquid or solid surfaces in closed containers, open containers, and open water areas such as rivers.
What is the difference between DF555 standard and ATEX versions?
DF555 Standard has a blue ABS enclosure and is suitable for general industrial level monitoring. DF555 ATEX has an orange ABS+PC enclosure with explosion-proof certification for qualified hazardous-area applications. Both versions share the same core ultrasonic specifications.
Which wireless versions are available for DF555?
DF555 is available with NB-IoT, LoRaWAN, 4G LTE, and multi-tech wireless versions. The 4G version supports LTE-FDD (B1/B3/B5/B8) and LTE-TDD (B34/B38/B39/B40/B41) frequency bands.
How long can the DF555 battery last?
DF555 uses one ER26500 non-rechargeable lithium battery with 8500 mAh at 3.6 V. Datasheet reference life exceeds 1 year at 4 uploads per day. The sensor also supports optional DC power supply. Actual battery life depends on upload frequency, network type, and ambient temperature.
Can DF555 calculate tank volume?
Yes. The CNDINGTEK cloud platform supports volume calculation based on container dimensions configured in the application. Users can monitor level, volume, historical trends, and receive alerts through the Web dashboard, email, or SMS notifications.
Is DF555 suitable for outdoor use?
Yes. DF555 has IP67 waterproof protection for outdoor installation. Threaded mounting or screw mounting options support installation on tank tops, containers, or open structures. Operating temperature range is -20°C to +70°C.
What optional features does DF555 support?
DF555 supports optional GPS/BEIDOU positioning module for location tracking, Bluetooth for convenient local configuration, and optional DC power supply as an alternative to battery power.
Is DF555 a standard product or a customized product?
DF555 is a normally sold product with standard and ATEX explosion-proof versions. Pricing is quotation-based after project requirements are reviewed.
CNDINGTEK Support
Evaluate DF555 for your level monitoring project
Share the application environment, required range, standard or ATEX version, network preference, and expected rollout scale so we can confirm the DF555 configuration.