Overview
Overview
➽ The DF520 is one kind of ultrasonic liquid level sensor, which can detect the liquid level by outside bottom installation without drilling holes. 

➽ The tank thickness can be up to 25mm. he resolution is 1mm or 0.1%FS (the bigger value). The measurement ranges is 0-10 meters. 

➽ It can be used for kinds of tanks, including iron, aluminium alloy, plastic and etc. It is applicable for automotive, oil station, chemical storage, LPG tank, and other industrial tanks to realize realtime monitoring of storage, online inventory management, statistics and estimation of production. 

➽ With NB/Lorawan/Sigfox/GPRS module, it transmit the status via gateway/base station to network server and application server. User can monitor the status remotely.

➽There is one version with inner battery as well as with external power supply. The battery version can work for the projects where power supply is not so easy. 
Features
➽ No drill holes, outside bottom installation, detect the liquid level.
➽ Support NB-IoT, LoRaWAN, Sigfox, GPRS module.
➽ Works for tank with thickness up to 25mm. Works for fuel tank, water tank, LPG and etc.
Product Paramenters
Overview
Dimension
Transducer ø30, Controller box 80*78*30mm
Color
Black
Detector
Principle
Ultrasonic
Detection Range
0~ 10000mm
Blind area
0-30mm
Accuracy
3mm or 0.3%FS, the bigger one
Resolution
1mm or 0.1%FS, the bigger one
Controller
MCU
STM32, 32bit ARM® core controller
Power
Option I: external power supply
6-13.8V DC
Option II: inner battery
ER26500 8000mAh 3.6VDC, non-recharged.
Every day 4 times upload, battery can work for more than 3 years. (depend on lorawan server, environment and etc.)
Environment
Operating Temperature
-20 ~ +70℃
Storage Temperature
-40 ~ +85℃
Protection Level
IP66
Media
liquid
Diesel,gasoline, water, LPG, Ethanol, and other liquids
Mounting
Bottom glue fasten
Transducer stick to tank bottom by glue.