HADRO

Hadro has specialised in Float Level Switches and Level Gauges for industrial and marine applications since 1993.

Hadro Techniek was founded in 1993 in Breukelen, the Netherlands. Following a period of steady growth, they moved to larger premises in Gouda in 2001, where they are currently focused on producing magnetic level gauges, level indicators and float switches.

Hadro specialises in custom-made items. The industrial and nautical sectors are given special attention. For the marine industry, they have the LRS and BV certifications. All of Hadro's switches and instruments are made in their workshop. Hadro can provide personalised service and handcraft with each float switch or level unit.



  • Shocks,Vibrations,Temperature Resistant
  • Fully mechanical no power necessary
  • Stainless,Aluminium or Plastic options
  • Fully adjustable switching options
  • 4-20 mA output options
  • ATEX options available
  • Material: Stainless steel 316L (1.4404)
  • Pipe: 60.3 x 2 mm
  • Pressure Max: 10 bar / 70 lbs
  • Temperature Max: Max. 160 °C
  • Material Stainless: steel 316L (1.4404)
  • Pipe: 60.3 x 2 mm
  • Pressure Max: 40 bar / 150 or 300 lbs
  • Temperature Max: Max. 400 °C
  • With two or more process connections for mounting on the side of a vessel.
  • This design is specially made for evaporating applications.
  • Material: Stainless steel 316L (1.4404)
  • Pipe: 60.3 x 2 mm (above tank)
  • Stilling well: 3- rods  76 or  104 / pipe 54; 60.3; 76 and 88.9
  • Pressure Max: 60 bar (depending on type)
  • Temperature Max: 160 °C
  • Measuring length Max: 2800 mm
  • Material: Stainless steel 316L (1.4404)
  • Pipe: 60.3 x 2 mm
  • Pressure Max: 10 bar / 70 lbs
  • Temperature Max: 160 °C