Silvion Ltd

1 SILVER/SILVER CHLORIDE. REFERENCE ELECTRODES. FOR CATHODIC protection . Silvion Ltd The Brambles, Grantham Road, Old Somerby, Grantham, Lincolnshire NG33 4AB. Realise Your True Potentials Telephone: 01476 590932. Email: Silvion REFERENCE ELECTRODES QUALITY CONTROL/ASSURANCE. Over 25 Years of Service to the Corrosion Prevention Industry Silvion Ltd is committed to quality and our policy is to achieve sustained, profitable growth by providing services that consistently meet or exceed the needs and expectations of our customers. Silvion Ltd, established in 1984 by Electrochemist/Corrosion This level of quality is achieved through adoption of a system of procedures that reflect the Scientist Dr Pathmanaban, is the UK's leading designer, competence of the company to existing customers, potential customers, and independent manufacturer and supplier of silver/silver chloride reference auditing authorities.

2 Electrodes for use in the cathodic protection (CP) industry. All our electrodes are fully tested, calibrated and supplied complete with a calibration Renowned worldwide in the corrosion prevention industry, certificate. They are individually identified with a unique number to ensure full traceability. Silvion take pride in offering our clients top quality products that include the latest advances in reference electrode technology. Our products, have proven reliability and have been used extensively PROFESSIONAL MEMBERSHIPS. in CP systems for the onshore/offshore oil & gas, petrochemical, power and water industries and in marine and concrete structures. Silvion Ltd are proud to be sustaining and active members of the following prestigious Silvion reference electrodes are manufactured using an advanced organisations: technique that results in a porous silver matrix being formed around a silver wire skeleton.

3 This porous matrix increases the Established in 1943 by eleven corrosion engineers in the pipeline industry, NACE International has more than 60 years of experience active area of the monitoring surface a hundredfold and also enables the deposition of a in developing corrosion prevention and control standards. With larger quantity of silver chloride on the element, which is precisely controlled by electrolytic over 25,000 members in over 100 countries NACE International has coating to provide : become the largest organisation in the world committed to the study of corrosion. n High reliability Silvion Ltd are pleased to be a Nickel Corporate Member. n High stability n Greater accuracy The Corrosion Prevention Association represents consultants, contractors and manufacturers working in the field of corrosion n Increased life performance. prevention for concrete and masonry encased steel. The CPA.

4 Silvion have a highly qualified and experienced team of professionals that enables us to provide practical and economical solutions to meet or exceed our clients' requirements. cpa acts as the leading authority and source of information on the subject of cathodic protection and other corrosion techniques and encourages research to ensure better understanding of the Silvion 's range of products include Ag/AgCl reference electrodes for: preservation of reinforced concrete structures and masonry clad n Concrete applications steel framed buildings. Cooling water towers, seawater intakes, foundations, bridges, car parks, historic buildings The aim of ICorr is to establish and promote sound corrosion n Seawater applications education, knowledge and management practice. Jetties, wharves, harbours, offshore platforms, vessels, FPSOs n Soil applications Pipelines, buried tanks, under tank bottoms n Potable water applications Water storage tanks TYPICAL APPLICATIONS.

5 N Specialist applications Power plant, geophysical surveys, offshore surveys Steel structures Concrete structures Marine structures Track Record Over the past 25 years Silvion have supplied many thousands of various Ag/AgCl reference electrodes to numerous prestigious projects worldwide. E&OE. The information provided in this document was accurate at the time of publication. Photographs in this publication are for indicative purposes only. 2 11. REFERENCE ELECTRODES FOR USE IN POTABLE WATER REFERENCE ELECTRODES FOR USE IN CONCRETE. Embeddable reference electrodes are vital elements of any CP system for the protection of WE300 Ag/AgCl KCl Low Ion Reference Electrode steel re-bar in concrete. By measuring the potential of the steel with respect to the Ag/AgCl electrode the corrosion state and the effectiveness of the protection system can be judged. Type WE300 Potable Water Electrodes have been specifically designed to include a low ion electrolyte around the Ag/AgCl element and are used to monitor potential levels or to Silvion have realised a 25 year track record for electrodes used in the CP of concrete, as we control the DC power supply output for cathodic protection systems installed inside fresh supplied our first electrodes for embedding in concrete during 1986.

6 Water tanks. Since this time we have supplied many thousands of our electrodes for concrete CP. projects worldwide. We ensure that the predetermined chloride ion concentration around the element in our embeddable electrodes is maintained by using an inert electrolyte fully OUTER CASING. compatible with the Ag/AgCl element. Ionic continuity to the environment is via a micro- MATERIAL: ACETAL porous sintered disc. LENGTH: 210mm DIAMETER: 32mm Typical Applications: CERAMIC DISC DIAMETER: 20mm Bridges, seawater intakes, marine structures, buildings, cooling water towers etc. SILVER CHLORIDE ELEMENT. LENGTH: 50mm (+/- 2mm). WIDTH x DEPTH: 5 x 5mm GEOMETRIC SURFACE AREA: 10cm2. REAL SURFACE AREA: 500cm2 WE10 Ag/AgCl KCl Embeddable Reference Electrode MATERIALS: SILVER COMPOUNDS ARE PURE. ELECTROLYTE: INERT ELECTROLYTE WITH MOLAR KCl OUTER CASING. MATERIAL: ACETAL. PERFORMANCE DATA LENGTH: 60mm DIAMETER: 18mm SHORT CIRCUIT CURRENT (< 1 MIN): 20mA SINTERED DISC DIAMETER: 15mm STABILITY (POTENTIAL DRIFT AT CONSTANT TEMP AND ENVIRONMENT): +/-10mV (24 Hrs) @ 5 micro Amp load ACCURACY ( Vs SCE IN NaCl @ 200C) -50mV +/-15mV SILVER CHLORIDE ELEMENT.

7 TEMPERATURE COEFFICIENT: C LENGTH: 15mm (+/- 2mm). USEFUL LIFE IN FRESH WATER: 30 YEARS (THEORETICAL) @ A load DIAMETER: 6mm TEMPERATURE RANGE: -5 to +700C GEOMETRIC SURFACE AREA: 3cm2. REAL SURFACE AREA: 100cm2. MATERIALS: SILVER COMPOUNDS ARE PURE. ELECTROLYTE: INERT ELECTROLYTE WITH MOLAR KCl PERFORMANCE DATA. SPECIALIST REFERENCE ELECTRODES SHORT CIRCUIT CURRENT (< 1 MIN): 2mA. STABILITY (POTENTIAL DRIFT AT CONSTANT TEMP AND ENVIRONMENT): +/-5mV (24hrs) @ 5 micro Amp load ACCURACY ( Vs SCE IN 3% NaCl @ 200C) -5mV +/-5mV. Since 1984 Silvion have been designing and manufacturing specialist TEMPERATURE COEFFICIENT: C. silver/silver chloride reference electodes for a range of different applications LIFE IN CONCRETE: 20 YEARS (THEORETICAL) @ A load some of which are detailed below: TEMPERATURE RANGE: -5 to +700C. n Specially designed electrodes for use with underwater corrosion monitoring equipment.

8 N Specially designed electrodes for marine vessels. n Specially designed electrodes for cooling water process plant. n Specially designed electrodes with combined coupon 10 3. REFERENCE ELECTRODES FOR USE IN CONCRETE REFERENCE ELECTRODES FOR USE IN SOIL. To ensure that satisfactory levels of cathodic protection are being achieved on buried WE50 Ag/AgCl KCl Embeddable Reference Electrode structures and above ground storage tank bottoms, reference electrodes are permanently installed to measure structure/electrolyte potentials. They can also be used as a sensing electrode to control the DC power supply output to the CP systems. OUTER CASING. MATERIAL: ACETAL Type WE200 permanent reference electrodes have been specifically designed for direct LENGTH: 80mm burial in soil and can be installed along pipeline routes at key monitoring points eg: test DIAMETER: 20mm stations, drain point, cased crossings, isolation joints, HVAC parallelisms etc.

9 They are also SINTERED DISC DIAMETER: 15mm suitable for installation below tank bottoms to measure cathodic protection potential levels. SILVER CHLORIDE ELEMENT. LENGTH: 20mm (+/- 2mm) Typical Applications: DIAMETER: 6mm Underground pipelines, underground in-plant pipework, underground tanks, mounded GEOMETRIC SURFACE AREA: 4cm2 tanks, above ground storage tank bottoms. REAL SURFACE AREA: 200cm2. MATERIALS: SILVER COMPOUNDS ARE PURE. ELECTROLYTE: INERT ELECTROLYTE WITH MOLAR KCl WE200 Ag/AgCl KCl Reference Electrode PERFORMANCE DATA. SHORT CIRCUIT CURRENT (< 1 MIN): 2mA. OUTER CASING. STABILITY (POTENTIAL DRIFT AT CONSTANT TEMP AND ENVIRONMENT): +/-5mV (24hrs) @ 5 micro Amp load ACCURACY ( Vs SCE IN 3% NaCl @ 200C) -5mV +/-5mV MATERIAL: ACETAL. TEMPERATURE COEFFICIENT: C LENGTH: 210mm LIFE IN CONCRETE: 25 YEARS (THEORETICAL) @ A load DIAMETER: 32mm TEMPERATURE RANGE: -5 to +700C CERAMIC TUBE DIAMETER/LENGTH: 25mm/50mm SILVER CHLORIDE ELEMENT.

10 LENGTH: 50mm (+/- 2mm). WIDTH x DEPTH 5 x 5mm GEOMETRIC SURFACE AREA: 10cm2. WE100 Ag/AgCl KCl Embeddable Reference Electrode REAL SURFACE AREA: 500cm2. MATERIALS: SILVER COMPOUNDS ARE PURE. ELECTROLYTE: INERT ELECTROLYTE WITH MOLAR KCl OUTER CASING. MATERIAL: ACETAL. LENGTH: 110mm PERFORMANCE DATA. DIAMETER: 22mm SINTERED DISC DIAMETER: 20mm SHORT CIRCUIT CURRENT (< 1 MIN): 20mA. STABILITY (POTENTIAL DRIFT AT CONSTANT TEMP AND ENVIRONMENT): +/-1mV (24hrs) @ 5 micro Amp load SILVER CHLORIDE ELEMENT ACCURACY ( Vs SCE IN 3% NaCl @ 200C) -5mV +/-5mV. LENGTH: 50mm (+/- 2mm) TEMPERATURE COEFFICIENT: C. WIDTH x DEPTH: 5 x 5mm USEFUL LIFE IN SOIL: 30 YEARS (THEORETICAL) @ A load GEOMETRIC SURFACE AREA: 10cm2 TEMPERATURE RANGE: -5 to +700C. REAL SURFACE AREA: 500cm2. MATERIALS: SILVER COMPOUNDS ARE PURE. ELECTROLYTE: INERT ELECTROLYTE WITH MOLAR KCl PERFORMANCE DATA. SHORT CIRCUIT CURRENT (< 1 MIN): 20mA.