German WTW IFL 700IQ Sludge Interface Sensor

characteristic

• Ultrasonic echo technology

• Intelligent echo signal processing technology

• Cleaning scraper brush automatic cleaning (only available)IFL700IQ）

• measuring range0.4 – 15.00rice

• Echo graphic display

• IP68protection grade

• power consumption5.5W（IFL700IQ）And3W（IFL701IQ）

• compatibleMIQ/TC2020perhapsMC2Multi parameter system（V3.35）

  application

• sewage treatment(municipal administration&industry): Primary and secondary sedimentation tanks&gravity thickener

• Water plant flocculation sedimentation tank

• Raw water sedimentation tank

• oil/Water interface (separation tank)

• Interface measurement caused by different densities

  working principle:

  IFL70x IQThe sensor is based on the principle of ultrasonic measurement, and the sound waves emitted by the ultrasonic transducer are partially or completely reflected by the layered interface and re received by the transducer. The layered interface is formed due to changes in the density of the measured medium, such as the sludge interface layer, the bottom of the tank, etc. The distance between the ultrasonic transducer and the layered interface can be detected by the interval time of reflection.

  IFL70x IQThe sensor has intelligent signal processing function, which can easily filter out the following unwanted echo profiles:

• Through fragments, rolling fluffy objects, and layered clouds

• The up and down fluctuation of the sludge layer caused by the passage of the scraper plate

• Zero interface, multiple echo situation…

  

  1 Emitted ultrasonic waves raw data ® filter/correct/algorithm® result

  2 Echo of sludge interface reflection(Short reflection time)

  3 Bottom reflection echo(Long reflection time)

  display

  

  Measurement value display Sensor echo display

  Cleaning, scraping, and brushing

  IFL 700 IQThe sensor has a mechanical cleaning brush that can effectively clean bubbles and algae. The scraping brush adopts high-tech technologyGrivoryMade of nylon, the shaft is made of titanium alloy material, and the operation is non-contact, so the scraper brush is maintenance free and never wears out. Scratch brush waterproof seal adopts three-level sealing, with a pressure resistance level of0.3barSmaller oils or algae on the surface of the transducer do not interfere with the measurement.

  sensor structure

  

  1 Cleaning brush(Only suitable forIFL 700 IQ) 2 Ultrasonic transducer 3 Insert depth scale0.1 m

  4 pole 5 cable plug 6 Protecting legs

  Outline dimension diagram

  

  Insertion depth100mmsign

  Sensor installation

  The following conditions must be met:

  1. Vertical installation;2. The distance between the sensor and the pool wall= 0.2m+0.05*(Water depth-Insertion depth) m；3. Insertion depth in0.05 m ... 3 mbetween;4. The distance between the bottom of the sensor and the sludge interface=0.4m(Dead zone)

  

  IFLinstallation accessories

  IFL700/701 IQSpecial installation accessories for sludge interface sensors-ARMIFL-DFixed bracket with railingIFL-RMRotating armIFL-DDesigned to be foldable to protect the sensor and prevent damage to the sensor when the scraper moves. Fixed bracket for railingIFL-RMandIFL-DWhen used in conjunction, the sensor can be installed further away from the edge of the sedimentation tank, and can be retracted to the edge of the tank for easier maintenance.

  Technical Parameter