features

ULTRASONIC SLUDGE DENSITY METER　ENV200  
It helps with the automation of sludge discharge, the reduction of the amount of polymer used in a dewatering process, and the improvement of efficiency of a thickener purification process!
  • It enables continuous and real-time measurement.
  • It is equipped with a logger that can store 10,000 data.
  • A sensor type suitable for each site can be selected.
    (Spool piece type, tank installation type, and insertion type)

operating principles

Almost all measuring instruments for suspended solid substances are based on a method of processing the attenuation amount of ultrasonic waves through comparison of amplitude variations of the wave receiving signal. When this method is used, the capacity of solid substances in a liquid is kept fixed. Because the pipe shape and flow velocity affect the stability and reliability of measurement, high-precision measurement is impossible.
Our ENV200 type meter increases precision by method of calculating energy with the wave receiving envelope, not by utilizing amplitude variations of the wave receiving signal.		  

standard specification

CONTROLLER
Type 　　ENV200
Measuring Principle 　　Ultrasonic Attenuation and EEAM(Envelope Energy
　　Average Method)　　
Measuring Ranges 　　Standard：2,000～200,000mg/ℓ（0.2～20%）
　　Option：2,000～400,000mg/ℓ（0.2～40%）
Measuring Mode 　　Process Mode,Real-time Mode
Resolution 　　100mg/ℓ （0.01%）
Accuracy 　　±5% or ±2,000mg/ℓ whichever is greater
Repeatability 　　±1%（FS）
Display 　　Temperature, Humidity, mA, Time, Pipe condition, Flow condition,
　　self-check etc.
Operational Temperature 　　-20～+60℃
Output 　　analog 　4-20mA　max.750Ω
　　relay 　SPDT x 3, AC250V 5A（ER, R1, R2）
　　digital 　RS232C, RS485（option）
Power 　　AC100～240V　50/60Hz　<6W
　　（option：DC24V）
Enclosure Rating 　　IP-67
SENSOR
Type S2-P
（Spool Piece type）		 S2-T
（Tank Mount type）		 S2-I
（Insertion type）
Material 　　SUS316 　　SUS316 　　SUS316
Pipe Size 　　50～600mm    
Frequency 　　1MHz, 500kHz 　　1MHz, 500kHz 　　1MHz, 500kHz
Max. pressure 　　10bar 　　10bar 　　10bar
Cable 　　10m, 100m max. 　　10m, 100m max. 　　10m, 100m max.
Operational Temperature 　　-10～60℃ 　　-10～60℃ 　　-10～60℃
Enclosure Rating 　　IP-68 　　IP-68 　　IP-68
Cleaning 　　option    

  • product

    • Sensor
      S2-S（spool piece type）

    • Sensor
      S2-T（tank mount type）

    • Sensor
      S2-I（Insertion type）

    • Controller
      ENV200