HydroACT 300 - Dissolved Oxygen Monitor0 pages

DISSOLVED OXYGEN MONITOR

HydroACT 300
BENEFITS

to 12 months

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.

i l
Dssoved Oxygen

· 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