1. Rohrback Cosasco Systems, Inc.
Corrater Systems Linear Polarization Resistance Corrosion Rate Monitoring

2. Corrater Systems Introduction Components Summary Probes Instruments
Dataloggers
ICMS3 Software
Summary

3. Corrater® Systems
Introduction

4. Corrater® Systems
Introduction
Corrosion cost water industries millions of dollars each year in equipment damage and downtime
Because of many variables corrosion can be hard to predict
Corrater Systems were developed exclusively for measuring corrosion rate and pitting tendency in conductive liquids (water)
Corrater instruments and probes are widely used in cooling, re-injection process, potable, boiler and effluent water systems

5. Introduction
Corrater® Systems
Employs Linear Polarization Resistance (LPR) and uses patented Solution Resistance Compensation (SRC) technology
Captures corrosion rates in moments with just a single reading, more accurately than competitive systems
Field proven pitting tendency from an electrochemical current noise sample, more reliable than competitive noise methods
Provides a wider operating range than traditional two and three-electrode LPR methods

6. Corrater Operating Range
Corrater® Systems
Introduction
Corrater Operating Range
ASTM G96-90(2001)e1 Standard Guide for on-line monitoring of corrosion in plant applications (electrical and electrochemical methods)

7. Corrater® Systems
Components

8. A simple reaction of iron in neutral aerated water
Components -Probes-
Corrater® Systems
CORRATER® probes provide a direct measure of corrosion rate and a qualitative pitting tendency of metals in electrolytes by the technique of LPR
CORRATER® probes interact with the electrochemical corrosion mechanism in order to determine the rate at which metal ions are passing into solution (corroding)
A simple reaction of iron in neutral aerated water

9. Corrater® Systems
Components -Probes-
Replaceable electrodes double as corrosion coupons providing a significant advantage over other electrochemical and electrochemical noise probe designs
Electrodes are quickly and easily replaceable saving you both time and money

10. Components -Instruments-
Corrater® Systems
Components -Instruments-
Portable instruments are an affordable option due to their flexibility and portability making them an essential pocket instrument for every water treatment engineer
On-line instruments are essential in plants where continuous supervision of corrosion is required and prevention of process upsets is critical

11. Components -Instruments-
Corrater® Systems
Portable and on-line instruments are designed with numerous features to meet your specific water application requirement

12. Components -Instruments-
Corrater® Systems
Portable Instruments
9000 Plus
Ideal for normal conductivity waters
Aquamate™
Patented SRC extends the low conductivity operating range from cooling water to condensate, feedwater, and drinking water systems
Both models run on a single 9 volt battery and weigh less than a pound

13. Components -Instruments-
Corrater® Systems
Components -Instruments-
Online Instruments
SCA-1
For simple basic applications
Displays and transmits corrosion rates up to 20 mpy (400µm/y)
9030 Plus
Both analog 4-20mA output and datalogging capabilities
9020 or 9020 OEM
Analog output
9020 OEM same as 9020 but without NEMA 4X enclosure
E-9020
Digital explosion proof transmitter for on-line operation in electrically hazardous areas

14. Components -Dataloggers-
Corrater® Systems
Dataloggers collect continuous corrosion history in water applications with less stable conditions
They operate anytime, anywhere through battery power
Just minutes to install and run
Transfer data to PC or via handheld instrument
Certified Intrinsically Safe (UL/CSA/ATEX)
Quick and easy data analysis with Corrdata® Plus Software

15. Components -ICMS3™ Software-
Corrater® Systems
Components -ICMS3™ Software-
Provides complete corrosion management
E-9020 Corrater transmitters are connected with multi-drop power and communications cabling
Can be integrated with Microcor Systems, Coupons, Ultrasonics & Process Parameters

16. Corrater® Systems
Summary

17. Corrater® Systems
Summary
Corrater Systems employ Linear Polarization Resistance (LPR) to measure corrosion rate and a noise sample for pitting tendency in conductive liquids (water)
The RCS patented SRC (Solution Resistance Compensation) technology provides the highest measurement accuracy with 2-electrode probes over a range of conductivities from salt water to condensates
Both portable and on-line models available for quick and accurate corrosion measurements
A variety of probes with varying temperature and pressure ratings available based on your specific needs

18. Summary
Corrater® Systems
When used with data loggers or on-line Corrater Systems can provide the same value as weight loss coupons but deliver the following additional benefits:
The time frame to calculate corrosion rate is user determined allowing flexibility to quantify upset conditions, etc.
Inhibitor changes can be quickly evaluated
Changing process conditions can be quickly identified
Corrosion rate data can be quickly presented without lengthy coupon analysis