Using a pressure measurement instrument to measure fuel level is very common, however most are scaled in bar or psi pressure ranges, and if they do happen to be scaled in level units, they are typically water level based, such as mH2O or ftH2O.
There are many different grades of liquid fuels which vary in density, plus changes in tank temperature will affect the density of one fuel type. So it is important to carefully consider the pressure range required to ensure that the level being measured never exceeds the operating range of the measurement device.
- 30 ft high hygienic tank level transducer with 0 to 10 volt output for use with lubricants
- Fleet management system submersible 3000mm height petrol tank level ATEX rated pressure sensor
- 2.5 metre water level transmitter for submersing inside underground tank
- 50cm range 0.5-4.5Vdc output submersible small diesel fuel tank level sensor
The conditions which will produce the maximum hydrostatic pressure, are the lowest tank temperature and the maximum tank level. If you know the density of the fuel at the lowest tank temperature and the maximum possible fuel height in the tank, then you can calculate the pressure range needed to ensure the instrument will never go over-range.
For an example, let’s say you have a Kerosene fuel tank that is 1,385 mm deep, with a maximum specific gravity of 0.82 corresponding to the lowest tank temperature of 15.6 degC. If you convert this to a hydrostatic pressure, it will come out as 0.1114 bar, 1135.7 mmH2O or 3.726 ftH2O pressure.
- 50cm range 4-20mA water level sensor for hot tub and spa service water tanks
- 12ft high ink tank screw-in 4-20mA output level sensor
- Potable water underground 10ft dia storage tank temperature and level sensor
- 1.6 mH2O submersible transmitter for wash water break tanks
Related Help Guides
- Measuring the volume of liquid in a horizontal cylinder tank
- Determining water tank volume using hydrostatic pressure
- How do you measure the volume of a liquid using pressure
Related Technical Terms
- cmH2O – Centimetres of Water Column at 4 deg C Pressure Unit
- ftH2O – Feet of Water Column at 4 deg C Pressure Unit
- mH2O – Metres of Water Gauge at 4 deg C Pressure Unit
- mmH2O – Millimetres of Water Column at 4 deg C Pressure Unit
- Specific Gravity
Related Online Tools
- Fluid Depth, Density, Gravity, and Pressure Calculator
- Liquid Level to Hydrostatic Pressure Calculator