F29 MK3Programmable Flow Switches

From a simple start-up timer to a full set of advanced flow- & time-based functions, the F29 MK3 is simply the most powerful and versatile flow switch available.

Features

Multi-voltage operation
10 programmable timers built in
Powerful 40 A solid-state drive
Dedicated 16 A alarm relay
Detachable electrical housing
18 bar (261 psi) rated standard model
200 bar (2900 psi) high-pressure model available
Suits pipes 1" and larger
Accepts 2 remote inputs
Weatherproof housing

The F29 MK3 programmable flow switches are available in various configurations to suit specific applications. For flows containing entrained solids, see the trailing wire option below.

More Information

Trailing wire option

This controller can use a trailing wire instead of the paddle. Order the F29-S-MK3 / F29-SS-MK3 / F29-S-12-MK3 / F29-SS-12-MK3 together with a TW Series trailing wire arm kit (TW-ARM-KIT-[length]): they are two separate items. This replaces the TW29, which has been discontinued.

The kit is supplied loose and your installer fits it. Kelco does not fit kits or supply fitted units. Fitting instructions are supplied by email with your quote.

Kit lengths: 50, 80, 100, 140, 160, 180, 200, 250 and 300 mm. For any other length, please email [email protected].

Find the kits in Spare Parts. Check a length for your pipe in the Paddle Trimming Calculator.

Ordering — Available Models

Model Number	Description
F29-S-MK3	220–240 V / 24 V AC or DC — corrosion-resistant thermoplastic construction
F29-SS-MK3	220–240 V / 24 V AC or DC — high-pressure 316 stainless-steel process connection
F29-S-12-MK3	12 V DC — corrosion-resistant thermoplastic construction
F29-SS-12-MK3	12 V DC — high-pressure 316 stainless-steel process connection

Operating Limitations

Max operating pressure (thermoplastic)	18 bar / 261 psi
Max operating pressure (stainless steel)	200 bar / 2900 psi
Min burst pressure (thermoplastic)	> 30 bar / 435 psi
Ambient temperature range	1 °C to 50 °C
Liquid temperature (thermoplastic)	1 °C to 60 °C
Liquid temperature (stainless steel)	-20 °C to 80 °C
Ingress protection rating	IP64
Recommended pipe size	25 mm / 1" or larger (no upper limit)

Electrical Data

Supply voltage (standard model)	220–250 V AC or 18–25 V AC/DC (multi-voltage input)
Supply voltage (12 V DC model)	11–14 V DC
Maximum motor load (all models)	Single-phase motors up to 2.4 kW at 220–240 V AC (P1). 3-phase motors of any size via interposing contactor.
Relay 1 contact rating (main pump relay)	16 A at 240 V AC resistive
Relay 2 contact rating (alarm relay)	16 A at 240 V AC resistive

Functions

# = user-settable

#Start-up timer	Adjustable from 1 second to 4 minutes in 1-second increments.
#Run-on timer	Adjustable from 1 second to 15 minutes in 1-second increments.
#Pre-start delay timer	Adjustable from 1 second to 1 hour in 1-second increments.
#Delayed restarting timer	Adjustable from 1 minute to 99 hours 59 minutes in 1-minute increments.
#Batch controller	Adjustable from 1 minute to 99 hours 59 minutes in 1-minute increments.
#Cyclic running & stopping	Running and stopping times both adjustable from 1 minute to 99 hours 59 minutes in 1-minute increments.
#Auto restart if run dry	Adjustable from 1 minute to 99 hours 59 minutes in 1-minute increments. Stops the pump if flow stops.
#Anti-cycling	Adjustable from 1 motor start per hour to 1800 motor starts per hour.
#Burst pipe detector	Adjustable from 1 minute to 99 hours 59 minutes in 1-minute increments.
#Leak detector	—
Programming lock	—
Remote start (momentary)	Remote start via an external switch closing its contacts (momentary closing) — a pressure, temperature or level switch or a set of external relay contacts.
Remote start and stop	The F29 only runs the pump while the external switch is closed. The external switch can be a tank level switch, a pressure or temperature switch or a set of external relay contacts.

Dimensions

Flow Sensitivity

The flow rates required to actuate the F29 MK3 Series flow switch depend on many variables — turbulence, liquid viscosity, and the exact area of the paddle face exposed to the flow. For an accurate estimate of switch performance and to determine the effect of paddle trimming, use our online paddle calculator.

Open the Paddle Calculator →

3-Phase Pump Motors

The F29 MK3 switches can be used to control either single-phase or 3-phase pumps, provided a 220–240 V AC or 24 V AC supply is available at the installation site. For 3-phase motors the F29 drives an interposing contactor which switches the motor itself — see the Pump Controller Power Calculator to size the contactor and check cable/voltage drop.

Open the Pump Controller Power Calculator →

Application Restriction

The F29 MK3 is an industrial control device, specifically designed for use in industrial, agricultural and mining applications. It must never be used for any other application. Installation must be carried out by a qualified pump engineer, and all electrical work by a licensed electrician.

Hazardous Areas

The F29 MK3 is not certified for use in hazardous areas and must not be installed in any area classified as hazardous under AS/NZS 60079.10 (Zone 0, 1, 2, 20, 21 or 22). Suitability of the F29-D models for diesel refers only to the chemical resistance of the wetted materials. Where a pump handles flammable liquids, the controller, which has its flow sensor built in, must be located outside any hazardous area.

Serviceability

The F29 MK3 programmable flow switches are not user serviceable. However, spare parts — including replacement paddles and wet-end assemblies — are available from your local distributor or directly from Kelco Engineering.