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

Corrater Systems Introduction Components Summary Probes Instruments Dataloggers ICMS3 Software Summary

Corrater® Systems Introduction

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

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

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)

Corrater® Systems Components

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

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

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

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

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

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

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

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

Corrater® Systems Summary

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

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