Self-Cleaning Analyser Filter System

From £2,870.00 (GBP)

The RF100AN-Q Analyser Filter System is a revolutionary new product specifically designed to provide filtered samples for analysers and dosing pump systems with almost no maintenance.

It is excellent for filtering difficult samples contaminated with suspended solid for supply to chlorine, ammonia and other analysers.

The small pump delivers the sample to your analyser and drives a self-cleaning filter that prevents the filter mesh, pump and analyser from blocking and blinding.

This wall mounted unit has a continuous flow through the tank – ideal for fast loop systems.  The pump self-cleaning filter in the tank withdraws filtered  sample water and delivers between 0 and 16 litres per minute your analyser.

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Key Features

  • Removes suspended solids down to 60 microns
  • Mag drive pump with polypropylene casing and impeller
  • Auto air bleed for self-priming
  • Board mounted for ease of installation
  • Float switch and pressure sensor for dry run protection
  • High reliability and easy to use
  • Power - 230v or 110v 50 Hz, or 115v 60 Hz
  • 16 litres per minute maximum flow
  • ABS & polypropylene Self Cleaning Filter Head
  • PVC Filter Tank and Nylon monofilament filter mesh

RF100AN-Q Analyser Filter System


RF100AN-Q Analyser Filter System

The RF100AN-Q is a self-cleaning analyser filter system, for filtering fluids to 60 Schematic showing RF100AN analyser filter system working with sample pump in a fast loop set upmicrons and supplying it to analytical equipment. The system samples from a continuous flow through a tank maintaining a constant water level, and can sample from very dirty water.

Debris and other suspended solids in the sample are carried out by the flow through the system or, if they are particularly heavy, can be periodically purged through a valve at the conical base of the tank.  This can be automated on a timer if required.

This is a very robust system continuously filtering fluids to 60 microns. The pump drives the filter and supplies from 0 to 16 litres/minute to your analyser.

The self-cleaning filter head in the tank has a continuous backwash when the pump is operating.  This clears contaminants from the filter mesh allowing for very low maintenance operation.  These units can be used alone or in conjunction with a Rotorflush submersible pump filtering and pumping from the water source to the RF100AN-Q.

For information about sampling directly from a water source have a look at our Omnia O1608-16 submersible sample pump with a built-in self-cleaning filter.

Uses and Applications

Rf100ANQ self-cleaning filter for analysers with an Ammonia monitorThe RF100ANQ allows for continuous sampling from a constant head in a fast loop system.  The sample is screened through a 60 micron mesh self-cleaning filter head.  The filter prevents debris reaching the analyser and the self-cleaning mechanism in the filter keeps the filter mesh clear.  The system is low maintenance and works well in dirty water.

Our self-cleaning filters do not perform well where there is a significant oil or grease content in the water being sampled.

Ferric sulphate dosing.  Many water treatment works are using ferric sulphate as a coagulant for reducing phosphorus levels in water. The process produces a ferrous sludge which can adhere and eventually block filter meshes.  Where ferric sulphate is used, we recommend more frequent filter maintenance to keep the system performing well.

More information about this process can be found HERE.

How it works….

The fluid to be filtered is introduced through the 1” inlet at the bottom of the filtering chamber.  Most of the liquid exits through the outlet and is sent back to the source. The filter head has an internal backwashing rotor that continually cleans the filter screen.

The fluid flows from the outside of the filter head through a 60-micron nylon mesh. The pump sucks fluid from the inside of the filter head and a proportion is returned to the internal cleaning rotor. The remaining filtered fluid is sent to the analyser.  This is adjustable from 0 to 16 l/minute.

RF100ANQ Parts

  1. Main power ON/OFF Mains supply 230v or 110v (see motor plate)
  2. Fault warning Light
  3. Reset Button
  4. Pressure sensor unit
  5. Continuous bleed (self-prime feature)
  6. Filter tank
  7. Anti-splash lid
  8. 1½” BSP (NPT) Outlet – Continuous flow of water out to drain. Flow rate through tank 15 litres/min minimum.
  9. Filter Cage
  10. Retaining Nut
  11. Filter Head Body
  12. 1″ BSP (NPT) INPUT Water INLET (to be filtered) Flow rate = 15 L/min minimum + flow to analyser
  13. 1″ BSP (NPT) Purge – Outlet to periodically drain solids that may settle in the tank. (Auto purge optional)
  14. MAG drive pump (To supply drive to backwash rotor and provide filtered supply to analyser)
  15. ⅜” BSP (NPT) Ball valve – controls flow to analyser. Adjust between 0 and 15 l/min
  16. Float switch
  17. Quick Release Clip

Models & Specification

RF100AN-Q Analyser Filter System Characteristics

Self-cleaning Analyser filter for analysers quick release filter head

Model Volts kW L/min Max Full Load
Float Switch Phase
RF100AN-Q 230v 50Hz
230 approx 0.25 16 2.1 amps Yes Single
RF100AN-Q 110v 50Hz
110 approx 0.28 16 4.2 amps Yes Single
RF100AN-Q 115v 60 Hz 115 tba 16 4.2 amps Yes Single


NB – Always Check the pump motor label for kW and Amps

All RF100AN-Q Analyser Filter Systems are now fitted with auto priming and a pressure sensor for dry running protection


RF100AN-Q Analyser Filter System Dimensions

PLEASE NOTE: Dimensions can vary as the tank is a moulded item and fittings have assembly tolerances to account for.RF100ANQ self-cleaning flter system for analysers dimensions
RF100ANQ self-cleaning flters for analysers dimensions side viewRF100ANQ self-cleaning flter for analysers isometric view

RF100AN-Q Analyser Filter System Construction

RF100ANQ self-cleaning filter for analysers - tank view showing quick release filter

Component Material
Pump Magnetic drive, polypropylene pump head
Filter head Polypropylene, ABS, with nylon filter screen
Backing board PVC
Filter chamber PVC
Standard filter mesh screen 60, 115 or 250 micron nylon
Tank Polyethylene
Pipework PVC
IP66 Control Box ABS

Please Note: Our filters are designed for use in dirty water or liquids with a viscosity close to that of water. Our filters and filterpumps are NOT suitable for use in raw sewage or any other dirty water which contains oils or fat.


Rotorflush RF100AN-Q Self-cleaning Analyser Filter System.RF100ANQ Self-cleaning filter system for analysers

Pre-filtration to online analyser systems down to 60 micron with adjustable flow rate.

Rotorflush Filter Model No. Price
RF100AN-Q 230v 50 Hz £2,870.00
RF100AN-Q 110v 50 Hz £3,085.00
RF100AN-Q 115v 60 Hz £3,385.00


All models can be fitted with 250, 115 or 60 micron bias cut nylon filament filter mesh

An actuated purge valve and a timer can be fitted to these units if required – POA depending on specification.


Please note:

All our products are manufactured to order

Delivery is by carrier.  Contact us for latest lead times.

Carriage and packing charges are extra.

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    Below is the technical and maintenance information for the Self-Cleaning Analyser Filter System

    ...Frequently Asked Questions

    We know you'll have plenty of questions about how things work, what kind of questions to ask us and what we'll ask you. We also have downloadable information across the range of our products as well as a specific information on Filtration Knowledge.

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