Level sensor I2C to LoRaWAN L868 Lobaro

LoRaWAN pressure & temperature sensor for level monitoring
High-precision lorawan level probe

With the Lobaro level probe, high-precision liquid levels can be monitored wirelessly via LoRaWAN at low cost and with low energy consumption. The sensors have a standard cable length of up to 15 meters and are connected via a digital bus; shorter lengths are also available on request. Power is supplied via the Lobaro box using a D-cell battery with a capacity of up to 19Ah. Due to the extremely energy-efficient system architecture of the Lobaro hardware, battery life of several years is easily achievable, even with a relatively frequent hourly measurement & LoRa transmission interval, for example.

With the help of ceramic pressure sensors, level monitoring can be realized with an accuracy of just a few millimetres. For example, a 0..1.5 bar sensor is ideal for high-precision level detection of liquids with a depth of up to 15 meters. Other sensors support pressure ranges of up to 1000 bar and are therefore suitable for a wide range of industrial applications, such as tank level monitoring or pipe burst monitoring in district heating pipe systems. Internet-based monitoring of water level measuring points on rivers is another conceivable application. Together with the good penetration and range (up to 5km) of LoRaWAN and the low energy requirement, even hard-to-reach locations, e.g. at Weirs or groundwater level shafts can be monitored wirelessly.

Please also contact us if you require our bridge with a mobile radio connection via NB-IoT (Narrowband-IoT) or LTE instead of LoRaWAN. We are happy to carry out such customer-specific adaptations as part of a cost-efficient adaptation of the hardware.

The configuration is user-friendly via the free Lobaro Tool (Windows, Linux, Mac).

Background level probe sensor technology

The level probe is queried via a digital interface as standard. This enables cable lengths of up to 15m.

Performance features:

·          Extremely low power consumption by switching off the measuring electronics, optimized for battery-powered applications

·          Compact and robust stainless steel housing

·          High accuracy ( ±0.5%FSO(Typ.), ±0.25%FSO), outstanding long-term stability, no hysteresis

·          Pressure ranges from 0 to 1.5 bar (15m water column)

·          Integrated temperature sensor

·          Temperature range: -10 to +70°C

·          Protection class: IP67

Key data / Key facts

·          Radio technology
LoRaWAN 1.1 compatible
On request: NB-IoT/LTE

·          Power supply 
1x D-cell battery (3.6V)

·          Measuring range
differential 0...1.5 bar
corresponds to 0...15m water column

·          Accuracy
Total error band [%FS] ±0.5

·          Query / measuring interval configuration
Time-controlled via "CRON job"

·          Antenna
Internal 868 MHz PCB
On request: external SMA antenna connection.

·          Housing
122mm (w) x 82mm (l) x 55mm (h)
Waterproof, IP67

·          Conformity
CE, RoHS, WEEE