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MN03 membrane level indicator for solids

Membrane indicator which signals the level reached by materials thanks to the pressure exercised on the membrane of the instrument. Sturdy construction with aluminium casing and an excellent quality price ratio. Does not require power supply to operate.



  • Easily installed Specific tools and settings are not required.
  • Versatile: can be installed in the vertical, horizontal or oblique positions.
  • Enhanced protection level in the presence of potentially explosive dusts/powders.


Certificato ATEX

II 3D Ex tc IIIB T85°C Dc

Certificato UKCA

UK Conformity

Technical Specifications

  • Casing and cover in die-cast aluminium
  • Membrane in natural rubber (MN03) or FKM (MN03V)
  • Flanged process connection with 4 (four) ø8.5 equidistant holes on ø160 mm pitch circle diameter
  • Ambient and process temperature -20° to +60°C (-4° ... +140°F) MN03
                                                       -20° to +80°C (-4° ... +176°F) MN03V
  • process pressure 0.8 to 1.1 bar (11.6 to 15.9 psi)
  • IP65 protection rating (dustproof, protection against water jets)
  • Contact capacity 10A at 250V (AC)
  • Micro switch SPDT output signal

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Connection: G 1" 1/2 (BSPP)
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Thanks to its small size, this instrument is particularly suitable for small tanks or dosing cells.

Connection: G 1" 1/2 (BSPP)
Optional: flange, tri-clamp
Sensitivity adjustable up to 25mm. Without moving parts.

Connection: G 1" 1/2 (BSPP)
Optional: flange
Explosion-proof. Suitable for environments where gaseous, explosive or inflammable mixtures are present.

Spare parts


For temperatures up to 80°C

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LED signalling lamp
(only ATEX Zone 22 available)

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For temperatures up to 60°C

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