DISSOLVED OXYGEN MONITOR OPTIONS · Automatic cleaning · Automatic in-situ verification · control PID PRINCIPAL OF OPERATION The sensing element (lumiphore) is activated, or excited when illuminated with a blue light. When activated, the lumiphore then emits red light in an intensity that is inversely proportional to the amount of oxygen present in the water. There is also a time delay between the peak emission of blue light and peak response of fluoresced red light. The amount of delay is inversely proportional to the amount of oxygen present. This time delay can be expressed as a phase shift between the wave O 2 O 2 O2 patterns of incident blue light and the fluoresced red light. This is in turn Sensor Foil O2 O2 O2 (Lumiphore) Optical Window O2 O O 2 reported by the electronics into a ppm 2 or mg/l reading of Dissolved Oxygen. Photo Diode The advantages of this technology (with Red Filter) are that it is more stable than for Returning Light Sensor Cap traditional electrochemical devices and far more resistant to abrasion. By Blue Filter using the state of the art sensor and Red Reference LED Blue LED electronics together the reliability, accuracy, and flexibility of the HydroACT 300 with DO Probe is far superior to that of its competitors. In addition to the state of the art optical sensor the HydroACT 300 offers Modbus communications (TCP/IP, RS485), Relays and 4-20mA outputs. Despite all of the additional functionality that this unit has to offer, the purchase costs are less than or comparable to, its competitors. Added to the cost savings of a truly automatic sensor verification system, some will achieve a replacement payback of only a few months. Also available are Dual and Triple Validation options, and various PID control functions. AUTOMATIC SENSOR VERIFICATION The Chemtrac DO Probe is the first of its kind in the world to offer automatic in-situ sensor verification as an option. The HydroACT 300 is able to reduce maintenance by automatically checking its sensor operation at user defined time intervals. Calibration on the In-Situ sensor is normally required only once per annum so with the automatic sensor verification option and the self clean option the sensor may not need to be inspected at all for a full year. · reagents or moving parts No · purchase and ownership cost Low · to 3 sensors Up · maintenance or calibration for up No Chemtrac, Inc. 6991 Peachtree Industrial Boulevard, Building 600 Norcross, GA 30092 USA PH: 770.449.6233 US: 800.442.8722 FX: 770.447.0889 www.chemtrac.com

GENERAL SPECIFICATIONS Analyzer Power Options: Sensor Options: DO, Free Cl, “Zero” Free Cl, Total Cl, Cl Dioxide, Ozone, pH with Temperature, ORP, Conductivity, Chlorite, Biofilm Sensor Inputs: Up to 3 (pH w/Temp probe requires 2 inputs) Digital Inputs: Up to 3 (750 ohm load), PID option will utilize 1 output Comms Options: Modbus (RTU, TCP), Profibus, or HART System Eventlogging: AutoClean (optional) Requires instrument air at 43.51 psi (3 bar) and 60 l/min Automatic Sensor Verification (optional) RDO® Rugged Dissolved Oxygen Sensor Type: Lumiphore optical dissolved oxygen Dissolved Oxygen Better...