Bamo MNR 7-I Magnetic Level Controllers in Stainless Steel

Bamo MNR 7-I Magnetic Level Controllers in Stainless Steel are actuated when the magnetic float passes in front of; Detection of up to 4 thresholds. The contacts are changeover and bistable: status reverses only when the float passes again in front of. Terminals are in an aluminum housing, IP 65 (cable gland M20 x1.5); Wiring diagram is shown on the board inside.

A nut limits the float movement at the stem end: by unscrewing the nut, the float is easily removed. Tip: The 2 “connection model with Ø 52 mm float and the DN 100 flange option, allow direct installation without removing the float.

Bamo MNR 7-I Features

  • AISI 316 L version
  • 1 to 4 changeover bistable contacts
  • No effects of foam, neither of vapours
  • Compatible with RTM: Reed-Chain with analogue output signal


Level detection on liquids compatible with stainless steel MNR 7-I is suitable for liquids, not viscous, not clogging and free of suspended solid particles.

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Bamo MNR 7-I Specification

Stem height Min. 250 mm / Max. 3,000 mm
Liquid density Min. 0.75: Float O.D. 91 mm; Min. 0.85: Float O.D. 52 mm
Pressure limit Max. 25 bar at 20 °C
Ambient temperature -20 … +70 °C
Operating temperature -10 … +100 °C
Reed contacts Changeover and bistable
Switching power 60VA/220V/0.5A
Shortest gap 100 mm between 2 contacts
Accuracy ±2 mm
Hysteresis 8 mm
Floats Ø 52, height 88 mm; Density: Min. 0.85
Ø 91, height 110 mm; Density: Min. 0.75)
Upper dead zone ≥ 50 mm with float Ø 52
≥ 75 mm with float Ø 91
Lower dead zone ≥ 85 mm with float Ø 52
≥ 80 mm with float Ø 91
Connections Aluminum head housing, painted, IP 65
Cable gland M20 x1.5 (for cables Ø 5 … 9 mm)
Fittings BSP ½”
BSP 2”
Option: Flange ND 100
Stem AISI 316 L (DIN 1.4404)
Float AISI 316 Ti (DIN 1.4571)
Fittings AISI 316 Ti (DIN 1.4571)
Flange AISI 316 L (DIN 1.4404)

Download Data Sheet: Magnetic Level Controllers in Stainless Steel MNR 7 – I