FloSentry 3™ MFFS3 Universal Single Or Dual Flow, FLocorp-Switch System

FloSentry 3™ MFFS3 Universal Single Or Dual Flow Switch System

Compatible with all MEMFlo flow meters, the FloSentry 3™ flow switch is a great choice for a variety of single or dual alarm applications. FloSentry 3™ provides a high/low or high and low-level switch with a dry contact relay output and is DC powered. This alarm system can be added to most MEMFlo flow devices to provide intelligent process automation as well as safety capabilities. The red LED alert light brings immediate attention to process conditions. Typical applications include process lube oil flow, gas flows, biodiesel fuel manufacturing, chemical processing, biomedical, coolant system, water, and wastewater treatment facilities.

MEMFlo FloSentry 3™ flow switch consists of two main components - the MEMFlo flow meter and the FloSentry 3™ switch assembly. FloSentry 3™ is a single or dual alarm set point. The Hall Effect Sensor is enclosed in a field enclosure rated either NEMA 4X or NEMA 7, depending upon the area classification. The sensor is then mounted over the MEMFlo flow meters measuring tube. The assembly can be adjusted either up or down depending on high flow switching or low flow switching.

Features and Benefits

  • Adds reliable alarm switching to most MEMFlo flow meter models
  • Warns of undesired flow deviations in process lines such as seal water, coolants, water, and waste treatment, lubrication, boiler feed water & annealing atmospheres
  • Reliable single or dual alarm
  • Non-contacting electronics - electronics never come in contact with the flow media
  • Easy access for switch adjustment without interrupting flow meter operation




Switching Type

Relay for connection to contact inputs of a PLC or audible or visual alarm, Solenoid Valve or any device using a Form C - Dry Contact
Single or Dual Relay Option


N.O or N.C 10 amp rated Form C

Supply Voltage10 – 31 VDC
Load Current Max250 mA
Voltage Drop<1 V
Power Consumption Max




Protection Class

NEMA 4X or NEMA 7 Cl 1, Div. 1 IP66/67

Download Datasheet: FloSentry 3™ MFFS3 Universal Single Or Dual Flow Switch System

Ref: Flo-corp.com