Introduction

Monitoring of cooling tower operation falls into two major categories. The first deals with the monitoring and control that is directed at maintaining cooling water chemistry within defined specifications. This includes both the components introduced by the supply of make-up water and those added to control scale, corrosion, and microbiological activity. The second monitoring activity includes measurements that assess the severity of scaling, corrosion, or microbiological processes during a campaign of operation. The data obtained from the second category of measurements are used to refine the specifications that form the basis for the water treatment strategy.