FA50 Flow Alarm

Flowmeter and adjustable flow alarm system

The MPB Series FA50 Flow Alarm offers a flowmeter and adjustable flow alarm system within the same unit. This flow alarm is suitable for most common processes, liquids and gases

The MPB Series FA50 Flow Alarm offers a flowmeter and adjustable flow alarm system within the same unit. The FA50 Flow Alarm is suitable for most common processes, liquids and gases. This device utilises the variable area flowmeter principle of operation, namely, as flow increases the float rises within a tapered flow tube and hence the flow rate can be read directly and alarm points set.

The alarm system uses the reed switch principle and is triggered by a small magnet housed within the float.


MPB Series FA50 Features

· Adjustable alarm/set point

· Latching contact mechanism

· Standard or customised flow scales

· Easy in-situ tube removal

· RPVC or stainless steel connections

· Polycarbonate safety cover

· Direct reading of flow rate

· Frictionless, hence low head loss

· Minimal maintenance, long service life





Chassis: White epoxy coated aluminum

End Blocks: Rigid PVC, 303 Stainless steel

Process Connections: ¼” BSPPF

Cover: Polycarbonate

Seals: Nitrile, Viton. EPDM, etc

Metering Tube: Borosilicate glass

Scale: Permanently fired black ceramic

Float: Rigid PVC, or 316 Stainless steel

Weight: 550 grams (approx.)

Maximum Working Pressure: 10 bar g (non-shock)

Maximum Working Temperature: 60°C  Nitrile, 100°C  Viton

Accuracy: ± 5% FSD predicted

Alarm Switch rating: 100V max. 1 amp max. 10VA max. Resistive load

Connection: 2 metre flying lead

For information on how to order this device please see MPB's website: 


Series FA50 Flow Alarm