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1.5
How the 3D TRASAR System Works
1.5.1 Fluorometer
TRASAR chemistries contain a uniquely fluorescing molecule that allows the fluorometer to detect
exactly how much chemical has been fed in order to determine chemical residual. This information
is used to deliver accurate control of chemical levels in your cooling system.
The patented 3D TRASAR on-line fluorometer consists of a "Flow Cell", an LED light source, filters,
and detectors. The filters and detectors are tuned to specific light frequencies unique to Nalco
products and resultant process reactions. The LED light source is extremely bright at the appropri-
ate frequencies to reliably and repeatably measure the chemical properties of the flowing water . As
a solid-state device, the fluorometer offers trouble free long life.
LED
Light
Source
1.5.2 3D TRASAR Scale Control, 3D TRASAR Bio-Control, and NCM Corrosion
Technology
3D TRASAR Scale Control, 3D TRASAR Bio-Control and NCM Corrosion Monitoring T e chnology
are available upgrades for the Starter 3D TRASAR 3500 controller .
Typical cooling water controllers use simple On/Off control schemes and timers to maintain pre-
determined set points in hopes to avoid operational upsets. The problem with this approach is that,
as system stresses change, scale can form, bio-populations can multiply , and corrosion can occur
without ever being detected. Pre-determined set points are only good for one set of stress condi-
tions!!
The 3D TRASAR 5500 Controller takes a revolutionary proactive approach to managing cooling
water systems. Patented state of the art technology is used to prevent scale formation, control bio-
population levels and continuously monitor corrosion rates.
Technical Help
(630) 305-CHEM
3D TRASAR
Water Sample Out
Excitation
Filter
Flow
Cell
Water
Water Sample In
521-OM0108.88
Copyright © 2009 Nalco Company
®
5500 - Installation & Operation Manual
Detector
Emission
Filter
1-4
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