EcoCloud 3G, battery-operated level sensor with 3G communication and free web portal for heating oil tanks, cisterns, storage tanks
The Proteus EcoCloud 3G is an innovative, universal, battery-operated ultrasonic level gauge with 3G module for the measurement of fuel oil tanks, cisterns and storage tanks. The Proteus EcoCloud 3G measures the contents of your tank up to 4 times an hour and transmits measurement data via the 3G network to a data server at least once a day. This data is then displayed on a web portal (web app) also optimized for display on mobile devices such as smartphones. The web portal shows you the current daily filling level, the actual volume (in percent and liters), the battery level and the signal strength of the mobile network. It also generates a graphical representation of the level curve which consists of the previous daily measurement data.
The installation is very easy and takes only a few minutes. Cabling is not necessary as the ultrasonic sensor is battery operated.
The EcoCloud 3G is a modern and precise alternative to mechanical dipsticks, tank gauges or analogue systems and can be used especially in areas with no connection to the mains. The system saves several control rounds in cellar to check your cistern and avoid empty tanks. The EcoCloud reads off the consumption and compares in time e.g. prices for fuel oil to prepare for re-ordering.
Easy to install and compatible with 1 1/4″, 1 1/2″ and 2″ thread openings, the EcoCloud 3G is universally applicable for tanks with liquids as long as a 3G mobile connection is available. The required SIM card is included free of charge and will be configured and delivered by our customer service with your tank data - this makes the installation extremely easy, you only have to mount the device on the tank.
Advantages of EcoCloud 3G level sensor
- Conveniently monitor your tank and consumption via a web portal at any location
- Battery-powered ultrasonic level sensor with integrated 3G mobile radio module
- Measuring range up to 3m
- Monitor receives and interprets measurement data in 60min intervals (standard interval)
- Measurement data interval configurable when ordering
- Determines and transmits measured values to the web portal at 24h intervals
- Fits on standardized 2″, 1¼" and 1½" threaded holes
- Resolution of the ultrasonic sensor is +/-10mm (∆=2cm)
- Remaining quantity in liters and percent
- Warning at low / high filling level
- To access the Web App, you need a computer with an Internet browser or a smartphone with Internet access.
The sales price includes a 10-year free SIM card and the use of the web portal with continuous data storage for the last 30 days
Product data
- Fits all 1 1/4″, 1 1/2″ and 2″ Threaded holes
- Measuring range up to 4m
- Measures all liquids, no matter if fuel oil, water, diesel etc.
- Ideal for heating oil tanks, cisterns, rainwater tanks, storage tanks, etc.
- Transmits data via 3G, no further infrastructure required as long as 3G coverage is available
- Free SIM card included
- Battery life >2 years, can be easily changed
- Reading and evaluation of the data via a web portal
- Hourly measurements of the sensor, once a day the data are transmitted via 3G (standard interval)
- Simple mounting, no wiring (sensor is battery-operated)
Areas of application
- Fuel oil tanks
- cellar tanks
- underground tanks
- cisterns
- Storage tanks and ICB
- fuel tanks
- drums with a volume of at least 200 litres
- Mobile Tanks
The Proteus EcoCloud package
The Proteus EcoCloud 3G package consists of a device, a pre-installed SIM card (valid for 10 years) and the free web portal. The sensor monitors the level in the tank with ultrasound by measuring the distance between the sensor mouth (the membrane) and the level in the tank. This data is then evaluated and calculated with the configuration data on the web server. The device is powered by four alkaline batteries. The average lifetime of the batteries is >2 years, depending on the set measurement data transmission interval. The batteries can be easily changed.
Thanks to the ultrasonic technology, measurements are up to 10 times more accurate than with comparable mechanical, analog or electronic measuring instruments. The advantage of ultrasonic technology is that no moving or mechanical parts need to be installed in the tank. This allows easy and quick self-installation and drastically reduces maintenance and costs as the sensor cannot get stuck, sink or get stuck.
The configuration of the device is carried out directly on our order page by our customer service on the basis of your order details, so that you only have to mount the device on the tank when you receive it.
The advantage of the Proteus EcoCloud 3G is that it fits all standard and custom tanks with "1¼", "1½" or 2″ tank sleeves/threaded openings.
Installation instructions
Configuration



- In order to ensure the best possible measuring environment, please note that the Proteus EcoCloud must be installed with a safety distance of at least 15cm from tank walls and obstacles in the tank so that the ultrasonic signal of the sensor cannot be disturbed
- The maximum measuring range is 3m, the ultrasonic sensor can only measure within this range
- Please note that fuel oil tanks are subject to TÜV regulations and changes (such as drilling holes) may only be made by licensed specialists. As a rule, this does not apply to water tanks and cisterns. Please check possible implications
- Make sure that a stable 3G connection is possible after mounting the device.
- Please download the latest version of the instructions before installation (see below).

Technical data
Tank size
Minimum height: 0.5m
Maximum height: 4m
The sensor must be mounted at a distance of at least 15cm from the tank walls.
The ultrasonic signal must not be disturbed by obstacles in the tank (crossbars, hoses, etc.).
Display
Secure web portal:
- Graphical display of the fill level
- Display of actual values: volume in litres/cent, battery status, GSM/GPRS signal strength
Maximum signal strength
Can be reduced by doors, walls, shafts, cover plates, etc. - please test before ordering if 3G reception is available
Power supply
4 x Type C lR14 Alkaline 1.5V
Battery life
>2 years for data transmission in 24h intervals
Wireless communication
3G Mobile
Dimensions (mm)
101mm (W) x 93mm (L) x 150mm (H)
Maximum and minimum operating conditions
Operating temperature: -10 degrees Celsius to +50 degrees Celsius
Humidity: 15% - 95%.
Hole size for sensor/thread
47mm diameter sensor mouth when mounted with adapter ring (sealing)
