Cerlic Environmental Controls, Inc.04/10/23 1

O2X – Dissolved Oxygen MeterO2X – Dissolved Oxygen Meter

• ApplicationsApplications– Aeration Basins, Final Effluent, Aeration Basins, Final Effluent,

Aerobic DigestersAerobic Digesters

• Low MaintenanceLow Maintenance– No Frequent CalibrationNo Frequent Calibration

– Automatic FlushingAutomatic Flushing

• Ease of UseEase of Use– Long-life OLong-life O22 oror O O22O Electrode O Electrode

CartridgesCartridges

– Quick CalibrationQuick Calibration

Cerlic Environmental Controls, Inc.

Duo – Your choice!Duo – Your choice!

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O2O Optical Clark Cell

Cerlic Environmental Controls, Inc.

Best of Both DesignsBest of Both Designs Optical OOptical O22O O •No calibration requiredNo calibration required

•Most stable luminophor on the Most stable luminophor on the market!!market!!

•Life: Cap - 3 years & electrode Life: Cap - 3 years & electrode - 5 to10 years- 5 to10 years

•Easy to replace capEasy to replace cap

•Flushing with 45-60 psigFlushing with 45-60 psig•Better for high DO & high Better for high DO & high Temp levels, cell lifeTemp levels, cell life

•Responds quicker to DO Responds quicker to DO changeschanges

Clark CellClark Cell•Proven Technology Proven Technology

•Long Cell life due to bubble Long Cell life due to bubble cavern, 18-24 monthscavern, 18-24 months

•Excellent for low DO levelsExcellent for low DO levels

•More accurate than OpticalMore accurate than Optical

•Flushing with 45-60 psigFlushing with 45-60 psig

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Cerlic Environmental Controls, Inc.

OO22O CerlicO Cerlic•Blue light excites luminescent Blue light excites luminescent material material

•Red LED provides reference signalRed LED provides reference signal

•The time for red light to be emitted The time for red light to be emitted off of luminophor is measuredoff of luminophor is measured

•Phase of both signals are comparedPhase of both signals are compared

•The measurement correlates to O2 The measurement correlates to O2 concentration, increased amounts of concentration, increased amounts of O2 in the liquid decreases the time O2 in the liquid decreases the time it takes for the red light to be it takes for the red light to be emitted. emitted.

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Cerlic Environmental Controls, Inc.

OO22O CerlicO Cerlic•Newest & Improved DesignNewest & Improved Design

•New Phase Shift TechnologyNew Phase Shift Technology

•New focusing lens to amplify New focusing lens to amplify Luminophore reflection - Luminophore reflection - improves accuracy improves accuracy

•Luminophore coating is more Luminophore coating is more stable - not damaged by UVstable - not damaged by UV

•O2X will accept OO2X will accept O22O O oror Clark Clark Cell electrodes Cell electrodes

•Life: Cap - 3 years & electrode Life: Cap - 3 years & electrode - 5 to10 years- 5 to10 years

•O2X built-in flushing is O2X built-in flushing is standard, 45-60 psig!standard, 45-60 psig!

LDO Hach LDO Hach •New Model 2 that obsoletes New Model 2 that obsoletes current design? Mad - current design? Mad - Customers & killed SC100Customers & killed SC100

•Damaged by extended exposure Damaged by extended exposure to lightto light

•Life – 12 months on capLife – 12 months on cap

•Flushing – Claims no cleaning Flushing – Claims no cleaning req’d. Low pressure only due to req’d. Low pressure only due to luminescent coatingluminescent coating

•Clamp on Cleaning, 3-5 psig Clamp on Cleaning, 3-5 psig

•Prefer float ball Prefer float ball

•Will not repair sensorsWill not repair sensors

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Cerlic Environmental Controls, Inc.04/10/23 6

Cerlic Environmental Controls, Inc.04/10/23 7

O2X Mounting OptionsO2X Mounting Options