Tank Monitor System – volume in %, liters, and gallons
- Measures from the outside of the tank – nothing inside
- For tanks with petrol, diesel, oil, fresh water, grey water, and black water
- Please have a look at the new Tank Calculator
- Bluetooth communication with Cerbo GX (Victron and Roam Hub (Roam Devices)
- Wireless monitoring directly on your phone (Bluetooth)
- With support for NMEA 2000
- Analog outputs and two alarm levels, even on your phone
- The app is available in Danish, English, Finnish, French, Italian, Chinese, Norwegian, Spanish, Swedish, and German
- Super easy installation – you’re done in 15 minutes
- With the new Gobius View app, you can share tank data with your friends
- Download All Gobius C’s fact sheet and compare the Basic sensor with the other Gobius C meters.
You always get the exact volume in Litre/Gallon and %, no more guessing.
Gobius C was developed for those who want to know the exact tank volume, eliminating guesswork and unpleasant surprises. You may have had bitter experiences with sensors inside the tank that you can never trust.
Precise and straightforward, so that you can “C” the volume in your tank exactly.
Click Installation to see how easy the installation process is.
The sensor is mounted with pre-installed 3M tape for plastic and fiberglass tanks.
A hole (min. 50 mm) is required for a metal tank. Our new Gobius C adapter fits perfectly for the standard hole (1 1/4″ or SAE 5) used by KUS, Wemas, and similar tank sensors.
Latest testimonials:
Fordi jeg ikke hadde tankmålere,og for å se hvor mye drivstoff jeg har til enhver tid.
John Viktor (Kamøyvær, NO) 23 September, 2026I bought 3 sensors
Peter (Romanshorn, CH) 20 September, 2026Jeg valgte gobius for en sikker tankmåler til septik.
Alf (Sykkylven, NO) 18 September, 2026Für meinen Fäkalientank . In der Hoffnung das es funktioniert.
Frank (Viersen, DE) 6 September, 2026Gobius C
A Combination of Gobius Technologies
We are proud of our new software, Wave-Damp. It automatically corrects measurements for wave motion that can interfere with readings at sea, as well as for vehicle movement on bumpy roads.
We have also developed a new tank level/volume calculation app that accounts for the tank’s geometry to specify the exact level in the tank (% and volume), both visually on your phone and on external devices.
By combining these functions together with a micro radar sensor, we now offer an unbeatable product for tanks (up to 4,5 m high), such as water, fuel, and waste tanks, at an unbeatably low price.
Gobius C vs. Other indicators
Gobius C
- Measures from the outside of the tank (metal and plastic tanks)
- Stepless measurement, 2-3 mm accuracy
- Instant showing the correct volume in Litre/Gallon och %
- Reliable, never in contact with the fluid water
- Smart software to eliminate wave motions
- Easy installation with your smartphone (Bluetooth)
- Easy to integrate with control systems and external devices
- Integrated instant support functions
Other indicators
- Measure inside the tank
- No exact stepless measurement
- Never correct measurement
- No tank shape correction
- No wave correction
- Unreliable, always in contact with aggressive fluids
- Can indicates full even if the tank is empty
- Drilling holes are needed
- Always a leakage risk
Micro radar vs. Ultrasonic
Micro radar measurement (Gobius C)
- Measure through plastic, glass, and fiberglass
- Does not measure through metal
- Not affected by temperature
- Not affected by foam, vapors, pressure, and dust
- Measure very fast, more than 1 time/sec.
Ultrasonic measurement
- Measure inside the tank, never from the outside
- No exact steps measurement
- Does not read through plastic and fiberglass
- Does not read through metal
- Affected by temperature
- Affected by foam, vapors, pressure, and dust
- Measure slow, 4-5 seconds each time
- Drilling holes are needed
- Always a leakage risk
- Complicated installation
