The Biomonitor from LAR AG

BOD Monitor®

Fast, Precise Measurement of Biological Oxygen Demand

LAR's BioMonitor® monitors Biological Oxygen Demand (BOD) in Minutes for Municipal and Industrial Wastewater Treatment Plants


  • Product Overview

  • Technical Specifications

LAR's BioMonitor BOD analyzer provides continuous, reliable BOD concentration data in only minutes. The patented design operates exactly like a miniature wastewater treatment plant. The unique design features two cascade reactors that ensure complete bio-degradation of the sample in the fastest time possible, for consistent and accurate correlation to BOD5.

In addition to BOD, the BioMonitor simultaneously monitors the endogenous respiration of your plant's activated sludge, for precise control of the treatment plant biomass. This enables plant operators to safeguard the biomass from sudden, or long-term toxic shock.

The BioMonitor is ideal for intelligent load equalization (ILE). ILE optimizes biotreatment efficiency, and controls large variations in organic loading by using existing equalization capacity more effectively.

LAR's FlowSampler provides completely automated operation, robust engineering and proven filterless sample preparation, ensuring reduced maintenance and reliable on-line operation for many years.

Type of measurement: Continuous measurement of BOD and sludge activity using activated sludge
Measurement Range: user - adjustable between 1 - 50 and 1 - 200.000 mg/l BOD
Actual Value: every 3 - 4 minutes
Response Time : 30 seconds
Sample preparation : maintenance-free particle separator
Waste water, drain: tube 30 mm ID or threaded 32 mm OD or as specified
Electrical power: 115 / 230V , 50 / 60 Hz, 150 VA
Analog output: 0/4 - 20 mA (BOD)
Analog output: 0/4 - 20 mA (sludge Activity)
Serial interface: or data transfer and remote control
Malfunction alarm: life-zero
Protection Class, Dimensions and Weight  
Cabinet stainless steel IP 54
Dimensions 23.6 x 28.4 x 16.5 inches (600 x 720 x 420mm) WxHxD
Weight 154 lbs, 70 kg


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