Level Measurement

Interface Level Transmitter

SludgeWizard Pro

SludgeWizard Pro interface level transmitter


SludgeWizard Pro Interface Level Transmitter is proven effective in monitoring and control of the Interface/Sludge blanket level, continuous level measurement of wide range areas of application specifically on Sewage & Wastewater, and Industrial applications. SludgeWizard Pro provides a continuous level indication and 4 – 20 mA output of interface height from the tank floor along with relays for alarm or control use and self-cleaning system function. The transmitter also has a dual point level sensing in liquids and/or air transducers.

SludgeWizard Pro Interface Level Transmitter has self-cleaning system function enables continuous, reliable interface/ sludge level measurement. Manual checking of sludge levels can be eliminated, freeing operators’ time for other tasks.

  • SludgeWizard Pro Interface Level Transmitter provides an option of continuous single or dual channel level control 
  • Self-cleaning transducer removes need for regular inspection
  • SBR tank applications can be monitored
  • Easy set up, via drop down menu on large clear display
  • Reliable monitoring down to 0.5% density
  • Two independent transducer channels with the option of combining Sludge Interface Transducers and/or Ultrasonic Level Transducers
  • ‘Hot Key’ Functions with easy menu driven programming
  • Reduces maintenance costs.
  • Easy installation and set-up.
  • Fully automated system with reliable interface/blanket level monitoring.
  • The self-cleaning system function prevents incorrect values caused by transducer clogging.
  • Ability to actuate pumps automatically with the alarm or pump control function.

SludgeWizard Pro applications:

  • Sumps, Lagoons, Settling Ponds
  • Primary and Secondary Settling Tanks
  • Clarifiers
  • Stationary and Travelling Bridge Applications
  • Gravity Thickeners
  • Reactor Clarifiers
  • DAF Thickeners
  • Sequencing Batch Reactor Tanks
  • Industrial Process Thickeners


Accuracy±0.25% of measured range or 30 mm (whichever is greater)
Resolution±0.25% of measured range or 10 mm (whichever is greater)
Operating Temperature-20 °C to 50 °C
Display192 x 128 Pixel Illuminated Multi-functional Backlit Graphical Display
Robust user Interface Keypad
Outputs• Analog Output – 2 x (4-20mA or 0-20 mA) Isolated Output @ 0.1% resolution
• Relay Output – 6 form “C” x SPDT rated @ 5A @ 240 Vac
• Fully programmable and adjustable diagnostics
• Serial Output – Half Duplex RS232
CommunicationsRS485, Modbus RTU/ASCII, Profibus DP V0 or V1
Maximum Range500 m line of site
Housing MaterialPolycarbonate
Enclosure ProtectionIP65
Weight1 kg. (2.2 lbs.)
Power SupplyUNIVERSAL (100 – 240Vac 50/60 Hz) ; 22 – 28 Vdc
Cable Entry10 cable entry knock outs – 5 x M20 and 1 x M16 underside, 4 x PG11 at rear


Measurement Range0.30 – 10 m maximum
Operating Frequency700 KHz transducer
Operating Temperature-20 °C to 70 °C
Housing MaterialBlack Valox 357
Wiper MaterialStainless Steel 316 blade and shaft (Consult FLOTECH for availability of other material)
Enclosure ProtectionIP68
Process Connection1” BSP Thread
Cable2 twisted pair 0.5 mm2 with overall screen
Approvals2004/108/EC EMC approval; 2006/95/EC low voltage directive

Other Information

Transducer/Transmitter Separation200 m
Recommended Insertion Length200 m
OptionalUse flex-arm assembly when a surface skimmer is present


On-board programmingBy integral keypad
PC programmingVia RS232 RJ11 port
Programming securityVia password (user selectable and adjustable)
Programmed data integrityNon-volatile memory

 Note:Specifications are subject to change without notice.