Intended use

Reinforced membrane level indicator to be used to control normally the medium or minimum level of bulk solids in silos or vessels. The models are certificated for use in potentially explosive Dust atmospheres hazardous areas.

These controllers consist of a switch actuated by a membrane and it is recommended for dusty and powdery, granulated and grainy bulk goods like dust, flour, grain, sand, plastic, etc. with an easy flow and a bulk density from 0.3 to 2.5 t/m3.


Technical data

Name Membrane level indicator
Type AD INOX AT ref: 2212-A-003
(Certified model MFB-EA)
Certification B0 Dust: ATEX II 3D Ex tc IIIB T83° C Dc
Density of the product 0.3 t/m3 – 2.5 t/m33
Ambient pressure Atmospherical
Maximum pressure + 0,5 bar
Cable entry M20x1.5
Maximum voltage 250 V AC
Contact function 1 NO + 1 NC
Capacity of the contact 4 A / 250 V AC (for resistive loads)
For inductive or capacitive loads reduce at 50%
Product temperature -20º C – +200º C​
Ambient temperature -20º C – +70º C​
Weight 1,85 Kg
Sensitivity 200 – 500 g adjustable
Housing Aluminium, RAL 7001 coated
Membrane: Stainless Steel 1.4301
Mounting ring and screws Aluminium ring, RAL 7001 coated and screw Zincated Steel
Cable gland Niquel-plated Brass
Parshvi Technology