1. Elcometer 331² Model SH Betondekkingmeters
2. The James Mini R-Meter digital rebar locator.
3. Resistivity meter to assess corrosion currents in concrete
4. Windsorb Probe For in-place strength testing of concrete
5. James Windsor Pin System
6. Concrete Test Hammers
7. New Ultrasonic tester + Concrete Test Hammer
8. James HR Rebar Locator
9. Classic rebar locator with microprocessor technology
10. ultra-sonic test system
11. James Gecor 8 for analyzing corrosion reinforcing steel of concrete
12. James Instruments Gecor 6

1) Elcometer 331² Model SH Betondekkingmeters

Goods Code : 9015 8019

A simple meter to quickly and accurately both the position and orientation of reinforcing bars as the cover thickness to be determined. And also potential corrosion. Thanks to its rugged waterproof design meets the meter to the IP65 protection class. He may be in the most crude environments are used.

• Fast and precise: Determine simple, fast and precise location and orientation of reinforcing bars.

• Corrosion Control: Use the same meter to the corrosion of reinforcement bars to check.

• Great memory Up to 10 groups with 1000 linear measurements in each.

• Large, clear display with lighting: For better vision in dark places.

• Interchangeable heads and search for Half-Cell kits: Choose between standard zoekkop, small distance zoekkop, thick cover layer zoekkop, borehole probe, Copper Half-cell kit and Silver Half-cell kit.

• Powerful Cover Master ® Software: Ultimate data management tool to cover meters and Half-cell measurements and nail to quickly and easily create professional reports.

• International bar scales: user choose between scales included metric rod, bar U.S. numbers, ASTM / Canadian and Japanese bar references for measurements anywhere in the world.

• Rechargeable batteries: The batteries can be inside or outside the meter will be charged.

• ElcoMeter features a series of four cover meters, 331 meter Elco ² Model B is a simple cover-meter and 331 meter Elco ² BH, SH and TH models have the half-cell technology that is required to assess potential corrosion.

• Memory up to 10,000 measurements

• Interchangeable heads and search for Half-cell kits - no need to return to factory.

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2) The James Mini R-Meter

Goods Code : 9015 8019

A rugged hand held field instrument for finding the location, depth and size of reinforcement rebar, post tension, copper and conduit in place.

Applications:

Rebar Locating
Concrete Drilling & Sawing
Repair & Rehabilitation
Contractors

Features and Benefits

• Eddy current design for greater accuracy.

• Single sensor for all depth ranges.

• Daylight visible display

• Locates up to 8” (200mm)

• Economical

Detection and Orientation of Rebars

The exact position and orientation of rebars can be measured quickly and accurately. Rebar-free areas can be identified for coring, grinding, resurfacing, or insertion of new machinery mountings.
The instrument can be used to inspect new structures for compliance with specifications as well as old structures under modification.

Measurement of Concrete Cover

The exact position and orientation of rebars can be measured quickly and accurately. Knowing the size of the rebar, concrete cover can be detected and the distance between the concrete and the surface it will appear in the easy to read display.

Location of Metals

Locate any metals, as pipe, flues, wire, and sheets embedded in concrete, masonry, or wood. Identification is possible to a depth of 10 inches.

Location of prestressed Cables

Locates the position of cables and lost tendon splices in pre or post tension concrete products.

The Mini R-Meter is a completely digital, rugged hand held field instrument for finding the location, depth, and size of reinforcement bars in place. The Mini R-Meter is a completely digital, light weight and inexpensive, easy to use unit to locate and size rebars. Rebar detection of up to 10” (250mm) can be accomplished when locating large diameter rebar. An easy to read display, 4 hr battery life are just a few advantages that makes the Mini Rmeter one of the most advanced handheld units in the field today. The sensor design allows the end user to quickly and accurately locate and determine concrete cover in corners or hard to reach areas. The system allows the user to select between Imperial and Metric units, and the data can be saved in the instrument for posterior uploading to a computer. The data is saved in the system with the date and time of the record to help identify prior test taken. The Mini-RMeter rebar locator is also capable of locating non ferrous metals. The eddy current sensor was specifically

designed to react with the presence of currents on the outer surface of metal objects. It is uninfluenced by small metal particles in the concrete, whether the concrete is fresh or hardened, wet, or dry. The eddy current sensor also allows the unit to locate both ferrous as well as non-ferrous metals in concrete; thereby finding not only steel reinforcing bars accurately, but tendons,

copper tubing, conduit, and more. The latest in microprocessor technology not only conditions the signal from the sensor for more accurate and dependable results but provides the user with the information they need. Built in memory can store over 150 individual data points for later processing. 

Technical  Specifications

 Sales Numbers

R-HR- 8000: Mini R-Meter unit

R-HR- 8100: Mini R-Meter w/software

Specifications

Operating temperature range: -5°C to 45° (23°F to 113°F)

Bar Size Calibration: 3/8” to 1-3/8”  (10 to 36 mm)

Max. Detection Range: 10” (No. 11 Bar) 250 mm (36 mm Bar)

Power Source: Rechargeable Storage Battery

Battery Life: 4 hours continuous operation

HR-8000 and HR-8100 only:

Operating Weight: Less than 3.5 pounds (1.60 kg)

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3) James RM-8000  OHMCORR

Goods Code : 9015 8019

 Resistivity meter to assess corrosion currents in concrete.

Applications:

Confirm readings made with either Cor Map System

Features and Benefits

• Assesses damaging corrosion currents in concrete.

• Economic and easy to use. 

• Direct digital readout of resistivity. Measuring from two small holes avoids the problems and errors of surface measurements.

• Used in conjunction with CorMap System to produce resistivity plots.

Technical Specifications:

Technical

The electrical conductivity of concrete is an electrolytic process that takes place by the movement of ions in the cement matrix. This ionic movement will occur when contaminants such as chloride ions or carbon dioxide are introduced into the cement mortar matrix. A highly permeable concrete will have a high conductivity and low electrical resistance. Because resistivity is proportional to current flow, the measurement of the electrical resistance of concrete provides a measure of the possible rate of corrosion. Since carbonation seriously affects surface  resistance, measurement on the concrete surface should be avoided.

The James resistivity meter, OHMCORR, has two probes spaced 5 cm (1.97 inches) apart which are placed in two holes drilled to a depth of 8 mm (3/8 inch) and filled with conductive gel. The concrete resistivity is displayed on an LCD when the control switch is activated. The following table correlates a range of values vs. the possible rate of corrosion of the reinforcement bars.

The James OHMCORR, when used in conjunction with the James CORMAP System provides an economic and sound means of diagnoses of corrosion in reinforced concrete.

Sales Numbers

C-RM-8000 Complete System

Specifications

Weight complete

in carrying case:    8 lbs (3.6Kg)

Display:                  41⁄4” Digit in LCD

Resolution:            ± 0.1K ohms cm (± 1 Digit)           

Battery:                  9 Volt

Range:                   0.5 - 20K ohms cm

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4) The Windsorb HP Probe System

Goods Code : 9015 8019

For in-place strength testing of normal and high-performance concrete.

Features and Benefits

• New electronic measuring system enhances accuracy and efficiency.

• Measurement to 17000 psi (110 MPa).

• Memory for data storage and uploading to PC.

• Safe: no accidental discharge and no recoil.

• Fast and economical use.

• Determines the developing strength of concrete; improves safety, ensures quality and reduces costs.

• Monitors the strength for rehabilitation as concrete ages.

• Conforms to ASTM C-803, ACI 347-78, BS 1881 #207, ANSI A. 10-3.

Safe and User Friendly: 

The Windsor HP System does not require great skill to use and consistent results can be obtained by construction site supervisory staff or field technicians. In fact, among its users are contractors, engineers, architects, testing laboratories, ready mix concrete producers, owners, managers and government authorities. This system has widespread use in testing concrete in-situ, on conventionally placed, sprayed or precast concrete; on horizontal or vertical slabs; on floors or overhead; on fresh or mature concrete.

The system is safe to use. The driver cannot be discharged unless it is fully depressed with some force against the actuating template which rests against the surface being examined.

Probes

There are two power settings available, low and standard power. The low power is used where concrete strength is less than 3000 psi (19.4 MPa). Standard power is for any strengths above that. The newly designed silver probes can be used for high performance concrete with strength up to 17000 psi (110 MPa). The probes are made of a high strength alloy, specially heat treated and annealed to achieve a hardness of Rockwell C 48. Special machining of each probe eliminates stress concentrations. The gold probe has a 56% greater cross-sectional area than the silver; it is recommended for light weight concrete — less than 125 lbs/cu. ft. (2003 Kg/M3) in density. The silver probe is used with concrete having a density greater than 125 lbs/cu. ft. (2003 Kg/M3).

Procedure

A. Actuating

Load the driver with a power load and probe suited for the type of concrete being examined. Place the driver firmly on the actuating template and fire. The locating template is then used to locate the probes at the corners of a fixed triangle. Normally, three measurements are required for consistent and statistically reliable results.

B. Measuring

The electronic measuring device is menu driven and programmed for selection according to the following parameters.

 • Aggregate hardness

• Light weight, normal, or HP concrete

• American or Metric units

The three individual tests are automatically averaged and displayed on the LCD in accordance with ASTM procedure. This data together with time and date of the test are stored in the memory for subsequent uploading to a PC. An extractor is supplied to facilitate probe removal after the test. The Standard Windsor Probe System includes a depth gauge and “Strength Chart” for determining the concrete strength. This is an economical alternative for many concrete test environments.

Front and Side View

Technical Specifications

Technical:

The Windsor HP Probe System is designed to evaluate the compressive strength of concrete in place. It is non-destructive and can be used with equal effectiveness on fresh and mature concrete. Equally accurate results are obtained on horizontal or vertical surfaces provided that the probe is perpendicular or at right angles to the test surface.

A hardened steel alloy probe is propelled at high speed by an exactly measured explosive charge into the concrete and its penetration measured. Each power load is guaranteed to have an energy level to give an exit muzzle velocity tolerance within ±3%. The compressive strength of the concrete is directly related to the resistance to penetration of the crushed aggregate and cement matrix: this is determined by the distance required to absorb the specific amount of kinetic energy of the probe. The compressive strength of the concrete is empirically related to the penetration that varies with the hardness of the aggregate. This relationship is recognized by determining the Moh’s scale of hardness of the aggregate and applying a correction factor to the penetration.

The combined contributions of both the aggregate and the cement paste to concrete strength are examined by the test. The accuracy of the inferred strengths has been examined in many independent tests and trials. The Windsor HP results correlate well with the concrete strength determinations obtained by conventional means.

For most accurate test results ASTM recommends that a correlation be developed for the particular mix design being tested. Exact duplication of cylinder test results should not be expected. The probes measure the strength of the actual concrete in a structure rather than that of a sample compacted and cured under strict and somewhat artificial conditions which do not necessarily represent those of the structure itself. The Windsor Probe test has been approved by federal, state and municipal agencies as well as a number of foreign countries. It conforms to the following tests, specifications and practices:

ASTM C803                  ACI 347

ANSI A.10-3                  BS 1881 #207

Sales Numbers & Specifications

Complete Windsor HP System                Z-WP-1000 PSI

                                                     Z-WP-1000 MPA

Complete Windsor Probe

Standard System                                 Z-WP-534

Driver Unit                                            Z-WP-500

Electronic Measuring Kit                       Z-WP-700(MPA or PSI)

Weight of Windsor HP System 18 lbs. (8.5 Kilos)

Box of 75 Silver Probes and

75 Power Loads                                   U-PRS-01

Box of 75 Gold Probes and

75 Powder Loads                                 U-PRS-03

Weight of case of probes                     8

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5) James Windsor Pin System

Goods Code : 9015 8019

A unique instrument for measuring the strength of new or existing construction materials in situ utilizing the established principle of resistance to penetration.

  Features and Benefits

• Portable and completely self-contained.

• Safe to use — non explosive.

• Economical — steel pin can be reused.

• Non destructive.

• Removable chuck facilitates testing of mortar strength in masonry.

• Conforms to ASTM C-803

• Test new concrete products and structures for early strength.

• Evaluate the in situ strength in existing structures, e.g., after suspected fire damage.

• Test strength of block, brick, and mortar joints within an existing structure, e.g., load bearing walls.

• Test polymer concrete and patching compound.

• Quality control of precast elements such as block, brick slabs and pipe.

Pin Penetraation Resistance Test Procedure

Firing :Windsor Pin with chuck on smooth surface

Cleaning:blower cleaning out pin hole before measuring

Measuring:Needle micrometer measuring depth of pinpenetration in mortar joint.

Measure the Pin after each test if the pin is too blunt or too short the strength can be considerably overstated.

New and used pins

Technical Specifications

Technical

The principle of the Windsor Pin system is that a spring drives a steel pin into the surface of the material. Since the depth of penetration is inversely proportional to compressive strength, the device provides a fast and safe way of determining the in situ strength of material. The spring is loaded by tightening the retraction nut until the trigger mechanism latch closes to hold the spring in place. With the spring loaded it is compressed to a distance of 0.8 inches. Thus once the trigger is pulled there is enough force to test compressive strength of concrete to a maximum of 5300 PSI (36.9 MPA). The pin is made of a special high strength steel specifically for building material penetration and can be used about seven times. It should be replaced if the length is reduced sufficiently for it

to pass a go/no-go gauge. Not doing so will severely impact results.

With the chuck on both the micrometer and pin driver, flat surfaces can be easily and accurately measured. Simply make sure the chuck rests against the surface and pull the trigger. After the pin has penetrated the surface, clean the hole with the provided blower, measure depth of penetration and compare to the previously prepared chart for the compressive strength of your material. Charts for typical mortar and concrete is provided.

The recommended practice is to take seven readings discarding the two readings farthest from the mean. By doing this the possibilities of striking a flaw or near surface piece of hard aggregate and using the resulting penetration to calculate strength are sufficiently reduced. Grinding the surface flat before testing produces more consistent results. With the chuck removed the pin driver is capable of accurately testing mortar joints. By inserting the Vbarrel

into the mortar joint the pin will directly penetrate at the center of the joint. By following a similar procedure as above the compressive strength of the mortar joint can be accurately and safely tested. A similar v-shape for the micrometer facilitates measurement.

Calibration

The spring of this instrument has been selected for its ability to undergo many compression cycles with no loss of energy. However, it is recommended that the instrument be sent back to James Instruments (or authorized distributor) for cleaning, recalibartion, and replacement of the brass loading nut, at least once every year

Sales Numbers & Specifications

W-P-2000 - Windsor Pin System W-P-1040 - Box of 40 pins with gauge for Windsor Pin system Weight -18 lbs. (8.1 Kg)                                                             Dimensions - 17 x 12 x 6 inches (43 x 30 x 15 cm)

Needle Micrometer

Windsor Pin System

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6) James Concrete Test Hammers

Goods Code : 9015 8019

Digital and manual hammers for the quick and easy determination of the strength of concrete.

• All James Test Hammers conform to :    ASTM C-805,    BS-1881 #202 and other international standards.

Digital Concrete Test Hammers:

Model W-D-1000 The W-D-1000 is an advanced, completely automated digital test hammer. Its calculation, memory and recording functions allow for quick, easy and accurate test results. Discard values from 1% to 99% can be set and both the mean rebound number and compressive strength can be calculated, displayed and printed as required. This instrument’s unique database, dedicated software and interface, also permit test data to be transferred to a personal computer for further analysis. Its unique 16-character digital display offers a menu of 5 languages from which to choose, as well as measuring units in the MPA International system or the PSI American system.
Model W-D-500 The W-D-500 features automatic calculation and digital display of the mean rebound number. It indicates the impact number, rebound number, average value,and mean value in double-digit figures on an easy-to-read LCD display. This precision instrument can display these numbers and values in one lot after all measurements are completed. This is an ideal automatic hammer for quick and easy testing of the  compressive strength of concrete where there is no need for recorded documentation of test data.
Manual Concrete Test Hammers  Model W-M-350 The W-M-350 Recording Test Hammer gives you the same quality as the W-M-250 but with the added feature of a built-in automatic chart recorder. Every test you take is automatically recorded as a bar chart on a paper strip. This creates a field record to verify your findings. In addition to this paper record, you can see each test as it happens through the large easy to read window. The W-M-350 comes with two rolls of paper, each with a capacity to record over 4000 tests.
Model W-M-250 The W-M-250 Manual Test Hammer is the traditional instrument used for the non-destructive testing of hardened concrete. This easy-to-use instrument provides a quick and simple test for obtaining an immediate indication of concrete strength in various parts of a structure. The minimum verifiable strength is 1400 PSI (10 MPa)
Calibration Anvil Model W-C-7312 It is recommended that calibration of the test hammers be checked regularly - usually after about 2000 strokes. The James Calibration Anvil (W-C-7312) has been designed for just that purpose. The Calibration Anvil weighs approximately 35 lbs. (16kg) and should be ordered separately

Technical Specifications

Sales Numbers & Specifications

Digital W-D-1000

Indication Mode:          16-Character digital  read-out

Recording System:      Thermal printer and PC interface with dedicated software.

Weight:                        16-1/2 lbs (7.5 kgs).

Dimensions:                 12” x 8” x 8 1/2” (300 x 200 x 210mm).

Op. Temperature:        32°F - 140°F (10°C to - 60°C).

Stand. Accessories:     Rechargeable batteries with charger RS-232 Interface 2 connector cables

Digital W-D-500

Indication Mode:          Digital read-out

Weight:                        3-1/2 lbs (1.6 kg)

Dimensions:                 5” x 5” x 14” (127 x 127 x 355mm)

Op. Temperature:        32°F - 140°F (O° C - 60° C)

Stand. Accessories:     Batteries (4 - “AA” size)

Manual Test Hammer W-M-350

Weight:                        3.2 lbs. (1.4 kg)

Size:                            5” x 3” x 14” (127 x 76 x 355mm)

Shipping Weight:         6 lbs. (2.7kg)

Carrying Case Dimensions: 8” x 7” x 14” (203 x 178 x 355mm)

 Manual Test Hammer W-M-250

Weight:                        2 lbs (0.9 kg)

Size:                            10 1/2” (267mm) (with plunger retracted)

Shipping Weight:         6 lbs. (2.7 kg)

Carrying Case              15 1/2” x 11 1/2” x 2 1/2”

Dimensions:                 (394 x 292 x 64 mm)

Weight:                        3.2 lbs. (1.4 kg)

Size:                            5” x 3” x 14” (127 x 76 x 355mm)

Shipping Weight:         6 lbs. (2.7kg)

Carrying Case

Dimensions:                 8” x 7” x 14” (203 x 178 x 355mm)

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7) NEW ULTRASONIC TESTER + CONCRETE TEST HAMMER:

A TWO-IN-ONE TESTING SOLUTION FOR EXCELLENT RELIABLE RESULTS

Goods Code : 9015 8019

There is a great news into Matest range of portable, non-destructive concrete testing instruments: the ultrasonic pulse velocity tester (cod. C372N). It is one of the top-products that has been recently improved by our research department and that will be included into the new edition of Matest general catalogue.
This latest model has a TFT VGA colour touch screen display (640x480) for a better visualization of the data as well as the shape of the transmitting wave, transforming the instruments into a real oscilloscope. The appliance basic configuration has also been updated: 64 MB Flash memory, 64 MB Ram and a pack of rechargeable Li-Ion 11.1 V batteries for a long-lasting operation. The tester has a new ergonomic design and in addition to the previous functions now it allows to calculate the crack depth.
Above all, Matest new ultrasonic pulse velocity tester can turn into a two-in-one testing solution by combining it with Matest digital test hammer. By means of a cable provided with the equipment, the rebound values are automatically transmitted to the ultrasonic tester, then stored and processed together with the measures of the ultrasonic pulse velocity. This new testing solution allows the operator to obtain even more accurate and reliable results for the determination of the concrete compressive strength, giving information about the dynamic modulus of elasticity, the Poisson’s Ratio and the possible presence of voids, cracks and pits in a building structure. Moreover the combined test allows to correct some inaccuracies that may occur during a simple rebound hammer test and to acquire precise information about the concrete compressive strength that cannot be obtained with the only ultrasonic test.
The combined test can be carried out even if the operator has a mechanical test hammer or a model of another brand: in both cases the rebound values have to be entered into the ultrasonic data logger manually

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8) James HR Rebar Locator

Goods Code : 9015 8019

Features and Benefits

• Single unit construction; no physical strain for the operator and no probe cord to snag or break.

• Post-mounted sensor with meter mounted separately for convenient viewing by operator in stand-up position.

• Pin-point accuracy for precise rebar location from direct reading, stable analog meter.

• Detection up to 10 inches (250 mm) of cover with easy to read calibrated meter.

• Light operating weight—less than 3.5 pounds (1.6 kg.).

• Up to 8 hours continuous use between battery charges; improved electronic circuitry.

SPECIAL MOUNTING: The HR Rebar Locator can be mounted on an adjustable telescopic tube with handle. The sensor is mounted at the end of the tube and the meter placed within convenient operator viewing range. This enables areas to be scanned with the operator in a standing position.

Technical Specifications

Detection and Orientation of Rebars

The exact position and orientation of rebars can be measured quickly and accurately. Rebar-free areas can be identified for coring, grinding, resurfacing, or insertion of new machinery mountings. The instrument can be used to inspect new structures for compliance with specifications as well as old structures under modification.

Measurement of Concrete Cover

The amount of concrete cover over reinforcement bars is an important parameter on bridge decks, highways, columns, and slabs. Concrete cover can be determined with an accuracy of + 1/8 inch. Concrete thickness can be measured in tanks, pipes, and other structures where the inner lining is steel and within 10 inches of the surface. Reinforcement bar size can also be estimated.

Location of Ferrous Metals

Locate any ferrous base material such as pipe, flues, wire, and sheets embedded in concrete, masonry, or wood. Identification is possible to a depth of 10 inches.

Location of prestressed Cables

Locates the position of cables and lost tendon splices in pre or post tension concrete products.

Sales Numbers R-HR-7000: US Scale                Hand-held unit with charger in carrying case R-HR-7500: Metric Scale R-HR-7200: US Scale                Telescopic post mounted Rebar R-HR-7700: Metric Scale           Locator with charger R-C-4995                                   Universal battery charger R-080-10453                               Battery Specifications Operating temperature range:                 -5°C to 45°C (23°F to 113°F) Bar Size Calibration:               3/8” to 1-3/8” (10 to 36 mm) Max. Detection Range:            10” (No. 11 Bar) 250 mm (36 mm Bar) Power Source:                         Rechargeable Storage Battery Battery Life:                             8 hours continuous operation HR-7000 and HR-7500 only: Operating Weight:                   Less than 3.5 pounds (1.60 kg) Operating Dimensions:            10” x 6” x 4” (19 x 18 x 10 cm) Weight incl. carrying case:      6 pounds (2.70 kg) Dimensions of carrying case: 7.5” x 7” x 14” (19 x 18 x 36 cm) HR-7200 and HR-7700 only: Operating Weight:                   5 pounds (2.26 kg) Operating Dimensions:            10” x 6” x 35” (19 x 18 x 88.9 cm)

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9) R-Meter MK III

Goods Code : 9015 8019

The re-birth of a classic rebar locator with the latest in sensing and microprocessor technology!

Features and Benefits • Eddy current sensor design  for greater accuracy. • Single sensor for all depth ranges. • Locates rebar, post tension cable, conduit, and copper pipe. • Determine bar size up to 4.5” (115 mm) deep. • Daylight visible display. • Rugged and splash resistant case. • Optional scan cart. • Locates up to 8” (200 mm) deep.
• Conforms to  ACI 318,  BS 1881 #204,  DIN 1045,  CP 110,  EC 2,  SIA 162,  DGZfP B2
The James Instruments R-Meter MK III represents the re-birth of a classic rebar locator. It utilizes the latest in eddy current sensing and microprocessor technology to accurately locate, determine depth, and estimate diameter of metal objects in concrete. The eddy current sensor is specifically designed to react to the outer surface of the metal object. It is uninfluenced by small metal particles in the concrete, whether the concrete is fresh or hardened, wet, or dry. The eddy current sensor also allows the unit to locate both ferrous as well as non-ferrous metals in concrete; thereby finding not only steel reinforcing bars accurately, but tendons, copper tubing, conduit, and more.  The latest in microprocessor technology not only conditions the signal from the sensor for more accurate and dependable results but provides the user with the information they need. Rebar diameter can be estimated by using a simple system of comparison all fully automated for consistent, repeatable results with increased resolution over previous models. The microprocessor can also statistically analyze the data, searching automatically for minimum cover points, and the least cover of a group of points. Cover points can be displayed as a symbolic map of a structure to assist the user in finding problematic areas. Built in memory can store over 80 thousand individual data points for processing. The optional scan cart can be used to graphically display a cross section of the concrete and the location of the metal objects within. With its built in encoder objects can be located with both distance and depth recorded. Fully integrated P.C. software allows the upload and storage of data points via RS-232. The ruggedized R-Meter MK III provides the field engineer/technician with all the tools necessary to locate and determine what and where all metal objects are in the structure
Technical Specifications Main Unit Weight:                        5.4lbs 2.5Kg Size:                            10.63” L x 9.68” W x 4.88” H (27cm x 24.5cm x 12.4cm) LCD Size:                     320 x 240 pixels LCD Dim.:                    3.5” L x 4.65” H  (8.9cm x 11.8cm) Recharging Voltage:    18v Memory Capacity:        80 thousand data points Battery Life:                 4 – 6 hrs continues run time Probe Dimensions Weight:                        1 lb 0.45Kg Size:                            5” L x 2.4” W x 1.6” H  (12.7cm x 6cm x 4.1cm) Scan Cart Dimensions Weight:                        1 lb 0.45Kg Size:                            8.25” L x 5.6” W x 2.25” H (20.1cm x 14.2cm x 5.7cm) Maximum Scan Length: 48 ft. 14.6m R-C-3000 BASIC UNIT  includes the following:  Main Unit, Probe, 8ft Cable, Sizing Template, Charger, and Headphones R-C-3050 BASIC UNIT WITH SOFTWARE includes the following: Main Unit, Probe, 8ft Cable, Sizing Template, Charger, Headphones, RS-232 Cable, and Basic Software. R-C-3075 SCAN CART UPGRADE includes the following: Scan Cart, 2 Extension Rods, 12ft Cable, Scanning Software. Turns your Basic Unit into a complete system (R-C-3100). R-C-3100 COMPLETE SYSTEM includes the following: Main Unit, Probe, 8ft & 12ft Cable, Scan Cart, Headphones, Charger, Complete Software (Basic and Scanning Software), RS-232 Cable, Sizing Template, 2 Extension Rods.
Sales Numbers R-C-3010           Main Unit R-C-3015           Probe R-C-3020           Scan Cart R-C-3025           Extension Rod R-C-3030           8ft Cable R-C-3031           12ft Cable R-C-3035           Headphones R-C-3040           Sizing Template S-3180              Charger R-C-3051           Basic Software R-C-3052           Scanning Software R-C-3055           RS-232 Cable

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10) The James V-Meter Mark II

Goods Code : 9015 8019

The most advanced ultra-sonic test system for accurately identifying basic characteristics of coarse grained materials.

Features and Benefits

• Direct digital read-out of transit time.

• Flaw detection.

• Simple calibration; no calibration bar required.

• Built-in wave form display on LCD.

• Portable, light weight with battery and A-C power.

Optional: Hand-Held Terminal

• RS-232 output for uploading to computer.

• Direct reading of calculated P-wave velocity and S-wave velocity.

• Direct reading of calculated modulus of elasticity.

• Direct reading of Poissons ratio.

Applications:

Concrete

 The V-Meter is widely used and accepted for quality control and inspection of concrete. It can measure and correlate concrete strength to standard strength measurement, permitting non-destructive testing of complete structures. It will identify honey-combs, voids, frozen concrete, cracks and other non-homogenous conditions in concrete.

Ultrasonic testing can be applied to new and old structures, slabs, columns, walls, fire damaged areas,

hydroelectric structures, pipe, prefab and prestressed beams, cylinders and other concrete forms. A wide range of

transducers are available.

Wood

 V-Meter Mark II, ultrasonic testing of wood can, nondestructively, detect knots, shakes, delamination, checks, splits, grain orientation, windfall cracks and presence of decay and rot. Basic parameters such as modulus of elasticity and density can be calculated. Practical applications include field testing of utility poles and structures, grading in the manufacturing process, fire ladder inspection, examination of laminates and paper roll density.

Technical

The velocity of ultrasonic energy pulses travelling in a solid material are related to the density and elastic properties

of the material. The pulse velocity is thus a measure of density and elastic properties of the material. In transmitting ultrasonic energy through a coarse grained material such as concrete, ceramics or wood, it is necessary for the wave length of energy to be greater than the diameter of the largest grain particle. If it is not, all of the energy

will be reflected back by the particles and none will reach the receiver.

Typically, the 54 KHz transducers are used for concrete testing – the signal wave length is about 3 inches (75mm).

Finer materials require higher frequencies for optimum resolution. The basic V-Meter Mark II contains a transmitter, a receiver and a very accurate high speed electronic clock. The transmitter generates an electrical pulse which when applied to a transmitting transducer, converts the electrical energy into a pulse of ultrasonic mechanical vibration. This vibration is coupled with the speciman under test by placing the transducer in contact with the speciman. At another selected point on the speciman another receiving transducer is coupled by mechanical contact. Each transmitted pulse of energy registers on the high speed clock. The first energy wave reaching the receiving transducer is converted back to an electrical signal and turns off the clock. The elapsed time is

displayed on the LCD in 0.1 microsecond increments.

The large LCD display has a graphic display of the waveform in the lower half of the LCD with the option for displaying the envelope of the received signal or expanded front end of the signal. The optional hand-held terminal is an external input device; it facilitates input of:

- Distance between transducers.

- English or Metric Units.

- Density differences.

- Moisture correction.

- Selection of P or S wave transducers.

Enabling the following to be done automatically:

Calculation of ultrasonic pulse velocity Calculation of Poissons Ratio Calculation of modulus of elasticity

Finally, the hand-held terminal with RS-232 adaptor

enables stored data to be uploaded to a P.C.

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11) James Instruments Gecor 8

Goods Code : 9015 8019

World’s most advanced system for analyzing corrosion of concrete reinforcing steel in existing structures.

Features and Benefits

•”...giving the corrosion rate most closely matching the true values.” (from the US Strategic Highway Research Program.)

• Rapid mapping capabilities for analysis of large structures.

• Advanced method for more accurate corrosion rate determination.

• New sensor design for analysis of wet or submerged structures.

• New method for analysis of cathodic protection systems while the system is running.

• Personal computer software for data analysis and report generation.

• Graphical user friendly interface to facilitate measurements.

Corrosion Rate Analysis

Corrosion of steel reinforced concrete affects the safety and durability of concrete structures in the following ways:

A. The steel cross section is reduced, weakening the concrete strength.

B. The concrete is cracked due to the increased volume in the rust. 

C. The steel to concrete bond is reduced when cracking and spalling are initiated

A true measure of the corrosion rate is possible by the polarization resistance technique. It has been well established by Stern and Geary that corrosion current is linearly related to polarization resistance. This gives a direct quantitative measurement of the amount of steel turning into oxide at the time of measurement. By Faraday’s equation, this can be extrapolated to direct metal sectional loss.

James Instruments Gecor 8 represents the latest technology in steel reinforcing bar corrosion rate determination. It combines state of the art embedded microprocessor systems and computerized flash technology with the world’s leading research in reinforcing bar corrosion rate analysis.

The Gecor 8 features:

1. A rapid mapping technique that allows the engineer to quickly classify areas of a structure. Both the classical corrosion potential as well as the resistivity of the concrete can be measured. Each individual parameter can be mapped in a multi-color contour graph. The built-in programming also analyzes this data and the two parameters can be combined to reliably determine areas of highest corrosion.

2. Our advanced modulation confinement technique precisely measures the true polarization resistance of the steel reinforcing bar. Utilizing the information obtained by the two reference electrodes in a feed-back network, the unit automatically adapts the electrical field produced by the guard ring to the conditions of the concrete. This allows the Gecor 8 to reach a quasi steadystate condition for the 30 to 100 seconds required for determining the polarization resistance through a galvanostatic pulse. This advanced technology provides the most accurate field test currently available for the determination of corrosion rate.

3. The Gecor 8 also has the ability to measure corrosion rate in submerged or very wet structures. An optional sensor has been designed to measure corrosion rate in extremely wet environments, eliminating the need for an external guard ring. The sensors measure polarization resistance through the use of Feliu's formula, using three aligned field-follower electrodes.

4. Another optional feature is a technique to measure the cathodic protection efficiency by analyzing the electrical impedance obtained from an alternating current applied with modulated confinement. This method provides a relative index of the cathodic protection performance as a percentage.

5. PC software assists the user to graphically interpret, collate, organize and generate reports with the data generated from the device. It allows the user to set up the Gecor 8 for more rapid testing later in the field, and will automatically link to the PC for data collection. Complete implementation of these options provides an unprecedented system for corrosion rate analysis of steel reinforced concrete structures. Combined with the latest advances in interface systems and database storage technology, Gecor 8 is an easy to use, reliable, automatic and intelligent corrosion rate analysis system. A system that can save an engineer time, money and effort in evaluating corroding structures for subsequent rehabilitation.

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12) James Instruments Gecor 6

Goods Code : 9015 8019

A unique patented field system for measuring the rate of corrosion and other parameters of reinforcement bars.

Technical Specifications 

Specifications

1. Meter

Dimensions                              12 x 8 x 6.5 inches (30 x 20 x 16cm)

Weight                                     9 lbs. (4kg)

Batteries                                  4 “D” type alkaline (24 hours operation)

Power                                      1 Watt

Consumption

LCD Screen                             2 line 16 character display

Memory                                   up to 100 corrosion rate readings

Accessories                             100ft (30m) cable for sensor to meter connection, Verification box,,RS-232 interface cable,,Software for downloading to PC,,Constant for Stern and Geary Equation: 26mV

2. Sensor “A”

Dimensions                              7” diameter x .8” (18 x 2cm)

Weight                                     2 Lbs. (0.9kg)

Components                            1 copper/copper sulphate central reference electrode

2 copper/copper sulphate confinement sensor electrodes

3 copper sulphate solution reservoirs

2 concentric stainless steel counter electrodes

1 sponge pad

The meter with “A” sensor will measure and store:

Corrosion rate (Stern & Geary law).

Corrosion potential

Concrete Polarization Resistance

Date, time and location of reading

3. Sensor “B”

Dimensions                              10.2” x 1.4” diameter (26 x 3.5cm)

Weight                                     0.6 Lbs. (0.3kg)

Components                            1 copper/copper sulphate reference electrodes

1 copper sulphate solution reservoir

1 stainless steel counter electrode

1 solid state temperature probe –10°C to 80°C

1 Capacitance relative humidity probe 3 to 95%

The meter with “B” sensor will measure and store:

Concrete resistivity

Relative humidity

Temperature (°C)

Sales Numbers

GECOR 6

C-CS-5000                                (complete system)

C-CS-5100                                Meter (electronic)

C-CS-5200                                Sensor A

C-CS-5300                                Sensor B

C-082-10799-050                        Jar of copper sulfate

C-080-107999-400                      Verification box

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