Features:

a.  Complete Integrated Corrosion and Deposit Monitoring System

b.  Corrosion Rate and Pitting Tendency Of Heated Surface

c.  Corrosion Measurements Of two Alloys

d.  Integral Data Logging Of All Parameters

e.  Field Proven Technologies

 

Rohrback Cosasco Systems and Bridger Scientific have collaborated to produce the new Rohrback Cosasco Systems CorrDATS^TM integrated corrosion and deposit monitoring system. The main parameters required for control of a water treatment program have been combined into this integrated data logging system which may be interrogated with a local portable or desktop PC, or remotely via modem over a telephone line.

 

In the actual field environment of water treatment, it is necessary to maintain the proper balance between low pH (more acidic) which increases corrosion, and high pH (more alkaline) which increases scaling tendency. Consequently, to achieve this balance, the operator must control pH, conductivity, corrosion, scaling and deposition. The CorrDATS^TM unit was developed to specifically blend comprehensive, sophisticated yet field-proven technologies into an economical package.

 

The heat exchanger flow tube of the system is matched to the alloy of the plant heat exchanger to be monitored in the field. The flow through the tube is programmed and controlled to represent the most critical plant condition, usually the lowest flow velocity. The heated surfaces are programmed and controlled to represent the most critical heat transfer conditions, normally the highest heat flux, and connected to the highest water temperature from the plant heat exchanger outlet. This sets up the system for scale and deposit monitoring.

 

In many systems, the heat exchanger tubing is a copper-based alloy and the rest of the system is carbon steel. Separate elements of the corrosion inhibition must be simultaneously regulated to prevent corrosion of both of these alloys. In addition, the corrosion rate on the heated exchanger tube material can change with temperature. The Corr DATS^TM system is unique because.

1.      It provides CORRATER^®  measurements from electrodes which are made from the same material as the heat exchanger, and;

2.      The electrodes are under the same heat flux conditions as the deposit monitoring section of the system.

 

The new 9030-Plus corrosion monitoring electronics are used in the CorrDATS^TM system, for increased flexibility (see bulletin #303 for more details). The 9030-Plus unit monitors multiple parameters, including corrosion rate and pitting tendency from two CORRATER^® probes.