Ultrasonic liquid level sensor LoRaWAN Dragino DDS20-LB

DDS20-LB — LoRaWAN ultrasonic liquid level sensor for an Internet of Things solution. He uses contactless method for measurement liquid height in the container without opening the container and sends the value over the LoRaWAN network to the IoT server.

The DDS20-LB sensor is installed directly under the container to determine the height of the liquid level. The user does not need to open the hole on the container for testing. Non-contact measurement makes measurement safer, easier and possible for some harsh situations.

DDS20-LB uses ultrasonic technology distance measurement. The DDS20-LB is highly accurate for measuring various liquids such as: toxic substances, strong acids, strong alkalis and various clean liquids in sealed containers of high temperature and high pressure.

The LoRa wireless technology used in the DDS20-LB allows the device to transmit data and reach extremely long distances at low data rates. It provides ultra-long range spread-spectrum communication and high immunity to interference while minimizing current consumption.

DDS20-LB supports BLE configuration and wireless OTA update , which makes it easy for the user to use.

DDS20-LB is powered by Li-SOCI2 battery with a capacity of 8500 mAh , designed for long-term use up to 5 years.

Each DDS20-LB is pre-loaded with a set of unique LoRaWAN registration keys, register these keys to your local LoRaWAN server and it will connect automatically after power on.

Features:
LoRaWAN 1.0.3, Class A
Ranges: CN470/EU433/KR920/US915/EU868/AS923/AU915/IN865
Ultra-low power consumption
Liquid level measurement using ultrasonic technology
Measure through the container, no need to contact the liquid
The permissible level range is 20 mm – 2000 mm
Accuracy: ±(5mm+S*0.5%) (S: measured value)
Cable length: 25 cm
Support for Bluetooth v5.1 and LoRaWAN remote setup
Support wireless OTA update of AT firmware
Commands for changing parameters
Downlink to change configuration
Waterproof housing IP66
8500mAh battery for long-term use

Application:
A smart solution for fluid control
A smart solution for LPG

Technical characteristics:
General characteristics of direct current:
Power supply: built-in Li-SOCI2 8500mAh battery, 2.5V ~ 3.6V
Operating temperature: -40 ~ 85°C

LoRa specification:
Frequency range Band 1 (HF): 862 ~ 1020 MHz Band 2 (LF): 410 ~ 528 MHz Max. +22dBm constant RF output vs
RX sensitivity: up to -139 dBm.
Excellent blocking immunity

Battery:
Non-rechargeable Li/SOCI2 battery
Capacity: 8500mAh
Self-discharge: <1% / year at 25°C
Maximum direct current: 130 mA
Maximum boost current: 2A, 1 second.