Kelco Engineering MF20 Series Flow Switch is a super sensitive version of our popular P20 Inline Flow Switch. The MF20 is a very simple and reliable mechanical flow switch that can detect extremely low flows. The switch can detect either continuous or pulsed flows.
The Descriptions of Kelco Engineering MF20 Flow Switch
The MF20 flow switch gives a simple on-or-off response to liquid flow. There are no metal parts in contact with liquids within the switch, so the MF20 is ideal for use in aggressive media such as acids and alkalis and many chemical solutions. The switches are supplied with tube flare fittings and a set of pipe spigots and unions for direct fitting into 15NB PVC or ABS pipe work.
Features of Kelco Engineering MF20 Flow Switch
- Australian made
- Can detect flows of less than 350mL/hour
- Maximum flow rate 25Litres/minute
- Suits tubes and pipes 6mm to 20mm (1/4? to 3/4?) dia.
- No metal parts in contact with liquids
- Suits pulsed or continuous flows
- 18 Bar (260 PSI) Pressure rating
- Stable electrical response
- Low head loss design
- Easy to install
Applications
- Control for backup dosing pumps
- Chemical metering pump control
- Chemical injection point status
- Laboratory applications
- Loss of prime detection
- Batch control
Operating Parameters
The body of the MF20 flow switch houses a fluted piston. Any flow, either pulsed or continuous, causes the piston to be lifted up within the switch body to a point where the liquid can pass over the piston and out of the top of the switch. The piston contains a magnet that actuates a reed switch and this provides the switching output.
When flow stops, the piston sinks due to gravity, thus moving the magnet away from the reed switch. No metal parts are in contact with the process liquid, and the simple gravity return system provides an exceptionally reliable corrosion-proof mechanism. The sensitivity of the flow switch is determined by the viscosity of the fluid and by the clearance between the piston and the switch body.
Three pistons are supplied with each MF20 flow switch, with accurate and predictable switch points ranging from 0.32 liters per hour to 12.8 liters per hour. The MF20 flow switch must be mounted vertically with flow upward through the switch body. The switch can be mounted directly on the suction or discharge valve of a metering pump.
Source: kelco.com.au
Read More Articles:
- Kelco Engineering FM Series Paddle Flow Switch
- Kelco Engineering F Series Paddle Flow Switch
- Kelco Engineering CR22 Microwflow Switch
- Kelco Engineering P25 Series Flow Switch
- Alicat Bio Reactors Mass Flow Controllers
