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  • Installation only by professionals.
  • Study the manuals and datasheet instructions prior to the installation.
  • The sensor must be pre-configured prior to installation (sending intervals, SIM cards, batteries).
  • 6 pieces of AA batteries might be inserted for demo purposes, but might be disconnected for transport reasons.
  • Further installation material is not included: couplings, extended cables, explosion proof connectors, etc. must be provided by the installation partner.

Tankmatix-15 Fuel level sensor

The Tankmatix-15 fuel level sensor has the SIM card, GSM modul, GPS module and batteries inserted in the head of the sensor. There is no need for external power.


The Tankmatix sensor head is mounted vertically to the tank via its connection thread (size G3/4), which is screwed directly into a standard threaded tank connection.

Inserting and replacing batteries

  • We recommend 6 brand new AA batteries (Lithium industrial standard for longer life times). Recharge-able batteries are not recommended.
  • Open sensor head.
  • Take out the battery box
  • Replace all batteries.
  • Insert the battery box and take care not to harm any wires or parts
  • After inserting batteries the LED (see picture) starts to blink 10 seconds. LED blinking RED: searching for GSM signal, LED blinking green measurement and transmition
  • Check in the software if you receive a new position.
  • If you press RESET, the sensor starts again and the LED starts to blink again and sends a position.



Inserting SIM (optional, if necessary)

In the most cases we have pre-installed a micro sim card already and the device is pre-configured. 

Please do the following steops only if you need to insert a sim card on your own:

    • Provide a MICRO-SIM 
    • Make sure that the SIM PIN is deactivated
    • Send the APN, APN Username, APN to us for configuration



  • The customer or installation supervisor is responsible for following all necessary security regulations (worker security, risk of explosives, security of tank, etc.).
  • The ideal position depends on the tank, it should have enough distance to moving parts or obstacles, ideally located close to the center of the tank or close to an opening lid for installation reasons.
  • First, you need to drill a whole into the tank and mount a screwed coupling with a female thread.
  • When welding the coupling make sure that the sensor can be installed vertical.

  • Use the gasket when screwing the sensor in the coupling.


  • In case of rope probe you can fix the weights on the lower end so that it is not moving around.

  • The sensor, the lids and mounting holes shall be closed firmly to avoid water, humidity.
  • The sensor probe is delivered as rode probe (steal wire) or metall tube, depending on the tank situation.


Connecting GSM antenna and GPS antenna

The external GSM antenna must be connected on the right side connector as shown below.

The external GPS antenna can be connected on the 2nd connector.

Installation Test

  • The sensor configuration will trigger a sensor value (every 5 minutes, every, hour, daily). 
  • The sensor values must be received correctyl in the GPS Fleet software. You will need the software access data to check the data.
  • The input value is the distance between the sensor's upper end of the sensor probe to the fuel level, measured in millimetres.
  • The values 1 and value 2 and the percentage figures can be configured in the softare.
  • If the tank is empty, the input value in millimetres must be the total height of the tank. If the tank is full, the input value will be smaller, you can simulate a full tank by touching the probe e.g. 20 centimetres below the upper end and wait until the next measurement takes plce.

Installation Examples


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