Online Biological Oxygen Demand Analyser | BIO Series

Online Biological Oxygen Demand Analyser | BIO Series

Online Biological Oxygen Demand Analyser – Overview

These bio-electrode sensors (BES) allow you to reliably measure and monitor the changing BOD or VFA concentrations in wastewater. IT has a sensor biofilm which is customised to the following applications: wastewater collection networks, influent locations of wastewater treatment facilities,  anaerobic selectors for biological nutrient removal, and anaerobic digestion environments.  The sensors monitor biological oxidation of organic carbon in wastewater streams by measuring the rate at which in-situ and customised biofilm surfaces consume the available food.  A biofilm is established on the sensor after 1-3 days in the wastewater stream. This bio-electric surface then uses the sensor current collector to generate a flow of electrons that is equivalent to the rate of organic carbon oxidation. This flow of electrons is measured and displayed on an online dashboard and updated every minute. Increasing BOD in wastewater will result in increased metabolic activity and sensor signal; acute chemical toxicity or significant dilution of BOD will result in low alert signals and reduce metabolic activity. This results in reliable, real-time insight into biological treatment rates and performance. These microbial, fuel cell-based sensors are robust and are used in the most challenging situations. Very little maintenance or cleaning is required. It highlights microbial activity variations, organic matter degradation, and process upsets, which can guide your operations.

Online Biological Oxygen Demand Analyser – Features

  • Real-time monitoring of consumable BOD/VFA or rbCOD surrogate
  • Plug-and-play functionality
  • Multiple connectivity options (analogue, Ethernet, Wi-Fi)
  • Smart Sampling Program reduces labour and analysis costs
  • Low maintenance

 

Description

Online Biological Oxygen Demand Analyser | BIO Series

SENTRY™ Sensor
Model
SENTRY™ Sensor Cartridge
Sensor Type
Bioelectrochemical
Measuring type
Electron generation rate (current) from biological oxidation of organic matter in solution.
Parameter
SENTRY™ Signal – SenS (as Consumable cBOD / VFA)
Reading range
0 – 10,000 mg/L as BOD equivalent
0 – 5,000 mg/L as VFA equivalent
Lower detection limit
2 mg/L as BOD equivalent
2 mg/L as VFA equivalent
Reading time Every minute
Resolution 0.00
Storage Temperature 1 – 4 °C
Operating temperature* 4 – 60 °C
Pressure*
1-16 bar (1-232.06 psi)
Water velocity* 0.5-5 m/s
pH Range* 6-8 pH
Incompatibility (within proximity to dosing point)
Metal salts – based coagulants, polymers, disinfectants, prolonged exposure to air
Mounting options
Open channel or in-pipe. Secured by 1.5” NPT threading in Sensor body
Mounting requirements
Sensor electrode must be completely and constantly submerged in water during operation.
Dimensions
L: 219 mm; Diam: 49.5 mm
Weight
1.7kg (3.8 Lb) including cable
Material
CPVC, 316 Stainless Steel
Sensor cable connection type
Standard circular connector (male), bayonet lock
Sensor cable length**
45.7 m (150 ft) to SENTRY™ Sensor Control Module
Warranty*** 2 years

* Optimal operational ranges, application-dependent. Can effectively perform outside of optimal range at the discretion of a SENTRY Client Manager or SENTRY Representative based on a review of local conditions.

** As standard unless a Sensor Replacement Strategy is suggested by SENTRY at the discretion of a SENTRY™ Client Manager of SENTRY™ Representative based on application and water matrix nature

*** Custom cable lengths (up to 400’) are available for a fee

Online Biological Oxygen Demand Analyser | BIO Series

Brand

Sentry

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