HOW OIL LEVEL SNESOR WITH TRACKERS

1.Install tank fuel level sensor in vehicle tank
  1.1 Position: Determine the position of fuel level sensor. In general, the tank fuel level sensor is Installed in the middle of tank.
  1.2 Clear : Clear smear nearby the position of fuel level sensor
  1.3 Dig a hole :Dig a hole on the position ,the diameter of the hole is similar as the diameter of sensor

1.4 Clear the hole:
      Clear the pad around the hole  by file 
      Clear the scrap iron by magnet

1.5 Install the tank fuel level sensor
      Remove the shield of bobber
      Remove the sensor from the flange
      Place the flange on the hole

1.6 Fasten
      Dig hole on the concave of flange
      Stick the glue on the screw
      Fix the flange on the tank
      Fix the sensor on the flange via screw

1.7 Seal
      Seal the flange and tank via seal glue

Following is overlook of tank after install tank fuel level sensor

2. Connect tank fuel level sensor with tracker unit
      There are 3 cable on the tank fuel level sensor, the green, the black and
the red one.
      The green cable is output of fuel level info, which is analog data from 0V~5V.
      The red cable is the input voltage of tank fuel sensor, which is 5V.
      The black cable is the ground of tank fuel sensor.

Following is connector of STT- 600:

Connect the green cable with analog input 1 or analog input2
Connect the red cable with Power
Connect the black cable with GND

3.The parallelism between fuel level and output voltage

The output of tank fuel level is analog signal between 0~5V.

The signal will be conversed to digital signal in tracker unit.
Following is the diagram which shows the relationship between the fuel level info and the digital info after conversion.

4.Example

After the tracker unit converse the tank fuel level info to digital signal ,it will send the digital info via GPRS.
Following is GPRS package which include the tank fuel info:

GPRS package

The first channel digital output is 01F4,which is 500 in decimalist. This means the tank is in 60% full and the output of tank fuel level sensor is 3V .

The second channel digital output is 00FA,which is 250 in decimalist.This means the tank is in 30% full and the output of tank fuel level sensor is 1.5V.