Product Description
Technical Specification
Transducers
Accessories
Instruction ManualData Sheet

CG70 Corrosion Thickness Gauges

The CG70 range of corrosion thickness gauges with its large, easy to read display, provides users with A and B-Scan options for accurate interpretation of measurements.

The Elcometer CG70 corrosion thickness gauge is available in two models: CG70BDL and CG70ABDL. Both models offer 2D cross sectional block view, providing a graphical representation of a material's thickness, ideal for accurate analysis and identification of pits and corroded areas.

 

CG70 Thickness Gauge

Features:

  • Range of display & measurement options: Pulse-Echo, Echo-Echo ThruPaint™ technology
  • Multiple calibration and material selection options
  • Adjustable gain: -30dB to 70dB range
  • Automatic gain control (AGC)
  • 64 User definable setups
  • High speed scan: 32 readings per second
  • Differential and minimal thickness alarm modes
  • Data output and storage: 12,000 readings and waveforms or B-Scans
  • Download to ElcoMaster® data management software

Select a transducer

 

CG70BDL

Taking 32 readings per second in scan mode, the internal data logger stores up to 12,000 readings together with their waveforms. RS232 output to the Elcometer NDT data management software allows ease of analysis and professional reporting.

Click here for a full product specification. 

 

Pulsed Echo (P-E) Measurement Mode Echo Echo (E-E) Measurement Mode Automatic Gain Control (AGC) B-Scan Display Mode

CG70BDL Thickness Gauge 

CG70ABDL

As well as all the features of the CG70BDL, the CG70ABDL also features an A-Scan display, allowing users to fully interpret and control measurement readings. The user can select to view either the full waveform (RF) or the rectified waveform (RECT) showing either the positive or the negative cycle of the full waveform.

Click here for a full product specification. 

 

Pulsed Echo (P-E) Measurement Mode Echo Echo (E-E) Measurement Mode Automatic Gain Control (AGC) B-Scan Display Mode A-Scan Display Mode

CG70ABDL Thickness Gauge 

 

The CG70 range has 64 user definable setups and works with a wide range of transducers which can be selected from the gauges internal menu.

The gain control function in Echo-Echo mode automatically adjusts the amplitude of the received echo, but it can be overridden using the selectable low, medium and high gain options to suit the properties of the material being measured, ideal for difficult applications.

 

CG70 Features Explained

 

Repeatability / Stability Indicator
Consisting of 6 vertical bars, when all the bars are fully illuminated and the last digit on the digital thickness value is stable, the gauge is reliably measuring the material thickness.

High Speed Scan with Minimum Thickness Display
By significantly increasing the measurement refresh rate this mode allows the user to make scanned passes over the test material. The smallest thickness value is held in memory and displayed when scanning is complete. This feature can also be used in conjunction with the minimum & maximum limit alarm feature (model dependant).

Differential Mode
Once a user defined nominal thickness value has been set, the gauge will display the +/- thickness difference from the nominal value entered.

Limit Alarm Mode
The user can define minimum and maximum thickness limits. If the measurement falls outside the upper or lower limit a red LED will light and the beeper sounds. A green LED will light to indicate an acceptable thickness.

V-Path CorrectionV Path Correction

Dual element transducers consist of a probe with two crystals (one to transmit and one to receive the sound pulse). The crystals are separated by an acoustic barrier - generating a 'V-shaped' sound path as the sound travels from one element to the other.
This path is slightly longer than the direct path therefore V-path correction is used to calculate the correct thickness.

 

CG70 Measurement Modes Explained

 

Pulse - Echo Mode (PE):
The normal display mode, measures the total thickness from the base of the transducer probe to the material density boundary (typically the back wall). Ideal for pit and flaw detection.
Pulse - Echo Mode
   

Echo - Echo Mode (EE):
Also known as the ThruPaint™ Mode, EE ignores the coating thickness, displaying the material thickness from the top surface of the material to the material density boundary.

Echo - Echo Mode

 

CG70 Display Modes Explained

 

 

Material Thickness Digits Display:

The standard display on all models, this displays the numerical thickness value in either millimetres (MM) or inches (IN).

Scan Bar Display:

A linear graphic display which allows users to graphically monitor changes in thickness readings. As the scale range can be adjusted by the user, this display is ideal for observing tiny variations in material thicknesses.

B-Scan Display:

A time based cross sectional 2D block view of the thickness provides a graphical view of the material thickness - ideal for relative depth analysis.

CG70 B-Scan
   

A-Scan Display; Full Wave (RF):*

The A-Scan display shows the sine wave created by the reflected sound, or oscillation, from the material being measured. In RF mode the full wave form is displayed.

A-Scan Display; Rectified (+ or -):*

Users can select to view either the positive or the negative cycle of the full waveform (RF). This rectified (RECT) display shows the amplitude of the echo versus the transit time.

 

* Available on CG70ABDL Model only

CG70 A-Scan
CG70BDL Corrosion Thickness Gauge
CG70ABDL Corrosion Thickness Gauge

Technical Specification

Model & Part Number CG70BDL CG70ABDL
Material thickness digits display

B-Scan cross sectional display

Combined B-Scan and digits display

Scan bar display

A-Scan display    + Rectified, - Rectified, Full Waveform (RF)
Measurement Mode PE & EE (ThruPaint™)  PE & EE (ThruPaint™)
Measurement Rate
Manual:
Scan mode
Scan bar display

4 readings per second
32 readings per second
6 readings per second


4 readings per second
32 readings per second
6 readings per second

Measuring Range1 PE: 0.63 - 254mm (0.025 - 9.999 inches)
EE: 1.27 - 102mm (0.05 - 4.00 inches)

PE: 0.63 - 254mm (0.025 - 9.999 inches)
EE: 2.54 - 102mm (0.100 - 4.00 inches)

Measurement Accuracy1

± 1% or ±0.1mm whichever is the greater

± 1% or ±0.1mm whichever is the greater

Measurement Resolution

0.01mm (0.001 inches)

0.01mm (0.001 inches)

Velocity Calibration Range 1250 - 9,999m/s (0.0492 - 0.3937in/μs)

1250 - 10,000m/s (0.0492 - 0.3936in/µs) 

    High speed scan mode

    Differential mode

    Limit alarm mode

    B-Scan display speed 15 seconds per screen 15 seconds per screen 
    Flaw mode     Basic prove-up flaw detection using
single element angle beam transducers
    Calibration setups 6 factory & 64 user-definable setups
transferrable to and from a PC archive

6 factory & 64 user-definable setups
transferrable to and from a PC archive

    Gates  

• PE: 1 gate; EE: 2 gates, 1 gate with hold off
• Adjustable threshold

Pulser type Square wave pulser

Square wave pulser with adjustable
pulse width (spike, thin, wide) 

Gain PE: selectable low, medium or high gain
EE: automatic gain control (AGC)
 Manual or automatic gain control (AGC) with
40dB range (depending on mode selected)
Timing 20MHz with ultra low power 8 bit digitizer 20MHz with ultra low power 8 bit digitizer 
Data logging • 12,000 readings with waveform
• Sequential and grid logging
• Alpha numeric batch identifaction
• OBSTRUCT indicates inaccessible locations
• 12,000 readings with waveform
• Sequential and grid logging
• Alpha numeric batch identifaction
• OBSTRUCT indicates inaccessible locations 
Calibration Options Single, two point, velocity & material type Single, two point, velocity & material type 
Transducer Probe Type Dual element Dual element 
Transducer Frequency Range 1 - 10MHz 1 - 10MHz 
Transducer recognition Manual - selectable from a list Manual - selectable from a list 
V-path / dual path error correction Automatic Automatic 
Probe zero Manual (via integrated probe disk) Manual (via integrated probe disk) 
Display 1/8" VGA (greyscale)
62 x 45.7mm (2.4 x 1.8 inch) viewable area
1/8" VGA (greyscale)
62 x 45.7mm (2.4 x 1.8 inch) viewable area 
Units (selectable) mm or inches mm or inches 
LED Backlight on / off / auto on / off / auto 
Repeatability / Stability Indicator

Battery Type 3 x AA alkaline 3 x AA alkaline 
Battery Life (approximate) 200 hours 200 hours 
Low Battery Indicator

Battery Save Mode Auto Auto 
Operating Temperature -10 to 60ºC (14 to 140ºF) -10 to 60ºC (14 to 140ºF) 
Size (w x h x d) 63.5 x 165.0 x 31.5mm (2.5 x 6.5 x 1.24 inches) 63.5 x 165.0 x 31.5mm (2.5 x 6.5 x 1.24 inches) 
Weight (including batteries) 383g (13.5oz) 383g (13.5oz) 

Aluminium case design with gasket sealed end caps,

waterproof membrane keypad

Transducer Connector Type LEMO LEMO 
RS232 Interface Bi-directional Bi-directional 
Packing List

Elcometer NDT CG70BDL gauge, couplant, carry case,

user manual, test certificate, 3 x AA batteries, ElcoMaster® software, transfer cable

Elcometer NDT CG70ABDL gauge, couplant, carry case,

user manual, test certificate, 3 x AA batteries, ElcoMaster® software, transfer cable

 

1 Measuring range & accuracy depends on material, surface conditions and the transducer selected

Transducers

 

Corrosion Thickness Gauge Transducers

 

A complete range of dual element thickness transducers, ideal for inspecting metal substrates.

Dual Element Transducers

 

 

 

 

 

 

Connector Type

Suitable for measuring

Part Number

Probe

Diameter

Probe

Characteristic

Damping

ThruPaint

Potted

Microdot

Lemo

Top

Side

Cast Iron

Plastics

Fibreglass

Thin

Fibreglass

Steel

 

1.00 MHz Dual Element Thickness Transducer

TX1M00EP-1

1/2"

Standard

S

 

   

 

   

TX1M00EP-2

1/2"

Standard

S

 

     

   

TX1M00EM-1

1/2"

Standard

S

   

 

 

   

TX1M00EM-2

1/2"

Standard

S

   

   

   

TX1M00EP-3

1/2"

Composite

S

 

     

   

TX1M00EL

1/2"

Composite

S

     

 

   
                             

2.25 MHz Dual Element Thickness Transducer

TX2M25CP-1

1/4"

Standard

S

 

   

 

 

 

TX2M25CP-2

1/4"

Standard

S

 

     

 

 

TX2M25CM-1

1/4"

Standard

S

   

 

 

 

 

TX2M25CM-2

1/4"

Standard

S

   

   

 

 

TX2M25CP-3

1/4"

Hi Temp2

S

 

   

 

 

 

TX2M25CM-3

1/4"

Hi Temp2

S

   

 

 

 

 

TX2M25EP-1

1/2"

Standard

S

 

   

 

 

 

TX2M25EP-2

1/2"

Standard

S

 

     

 

 

TX2M25EM-1

1/2"

Standard

S

   

 

 

 

 

TX2M25EM-2

1/2"

Standard

S

   

   

 

 

TX2M25EP-3

1/2"

Hi Temp2

S

 

   

 

 

 

TX2M25EM-3

1/2"

Hi Temp2

S

   

 

 

 

 

TX2M25EP-4

1/2"

Composite

S

 

     

 

 

TX2M25EL-1

1/2"

Armoured

S

     

 

 

 
                             

3.50 MHz Dual Element Thickness Transducer

TX3M50EP-4

1/2"

Standard

H

     

 

TX3M50EP-1

1/2"

Coating

Thickness

CT

     

 

 

 

 

 

 

 

Connector Type

Suitable for measuring

Part Number

Probe

Diameter

Probe

Characteristic

Damping

ThruPaint

Potted

Microdot

Lemo

Top

Side

Cast Iron

Thin Plastics

Steel

Glass

                           

5.00 MHz Dual Element Thickness Transducer

TX5M00BP-2

3/16"

Standard

S  

   

   

TX5M00BP-3

3/16"

Standard

S  

     

 

TX5M00BP-5

3/16"

Standard

H

     

 

TX5M00BM

3/16"

Standard

S    

   

 

TX5M00BP-1

3/16"

Low Profile

S  

     

 

TX5M00BP-4

3/16"

Coating

Thickness

CT

     

 

TX5M00CP-3

1/4"

Standard

S  

   

   

TX5M00CP-9

1/4"

Standard

H

   

   

TX5M00CP-4

1/4"

Standard

S  

     

 

TX5M00CP-10

1/4"

Standard

H

     

 

TX5M00CM-1

1/4"

Standard

S    

 

   

TX5M00CM-2

1/4"

Standard

S    

   

 

TX5M00CM-9

1/4"

Standard

H

 

   

 

TX5M00CP-1

1/4"

Low Profile

1" Wand

S  

     

 

TX5M00CP-2

1/4"

Low Profile

9" Wand

S  

     

 

TX5M00CP-6

1/4"

Coating

Thickness

CT

     

 

TX5M00CM-3

1/4"

Coating

Thickness

CT

 

   

 

TX5M00CP-7

1/4"

Hi Temp2

S  

   

   

TX5M00CP-8

1/4"

Hi Temp2

H

   

   

TX5M00CM-4

1/4"

Hi Temp2

H

 

 

   

TX5M00CM-5

1/4"

Hi Temp2

S    

 

   

TX5M00EP-2

1/2"

Standard

S  

   

   

TX5M00EP-3

1/2"

Standard

S        

 

TX5M00EP-10

1/2"

Standard

H

     

 

TX5M00EM-1

1/2"

Standard

S    

 

   

TX5M00EM-2

1/2"

Standard

S    

   

 

TX5M00EP-4

1/2"

Coating

Thickness

CT

     

 

TX5M00EP-5

1/2"

Hi Temp2

S  

   

   

TX5M00EM-3

1/2"

Hi Temp2

S    

 

   

TX5M00EM-4

1/2"

Hi Temp2

S    

 

   

TX5M00EP-6

1/2"

Hi Temp2

H

   

   

TX5M00EL-1

1/2"

Armoured

S      

 

 

TX5M00EP-1

1/2"

Cylinder Probe -

Iron

S  

     

 

         

Connector Type

Suitable for measuring

Part Number

Probe

Diameter

Probe

Characteristic

Damping

ThruPaint

Potted

Microdot

Top

Side

Thin Plastics

Steel

Glass

Aluminium

Titanium

                           

7.50 MHz Dual Element Thickness Transducer

TX7M50BP-1

3/16"

Standard

S  

 

 

 

TX7M50BP-2

3/16"

Standard

S  

   

 

TX7M50BP-3

3/16"

Coating

Thickness

CT

   

 

TX7M50CP-1

1/4"

Exxon Spec

S  

 

 

 

TX7M50CP-2

1/4"

Exxon Spec

S  

   

 

TX7M50CM-1

1/4"

Exxon Spec

S    

 

 

TX7M50CM-2

1/4"

Exxon Spec

S    

 

 

TX7M50CP-3

1/4"

High Resolution

S  

 

 

 

TX7M50CP-4

1/4"

High Resolution

S  

   

 

TX7M50CP-6

1/4"

Standard

H

   

 

TX7M50CP-5

1/4"

Coating

Thickness

CT

   

 

TX7M50CM-3

1/4"

High Resolution

S    

 

 

TX7M50CM-4

1/4"

High Resolution

S    

 

 

 

                         

10.00 MHz Dual Element Thickness Transducer

TX10M0BP-1

3/16"

Standard

S  

   

 

TX10M0BP-2

3/16"

Standard

S  

 

   

TX10M0CP-3

1/4"

Standard

S  

 

     

TX10M0CP-4

1/4"

Standard

S  

   

   

TX10M0CM-1

1/4"

Standard

S    

     

TX10M0CM-2

1/4"

Standard

S    

 

   

TX10M0CP-1

1/4"

Low Profile

1" Wand

S  

   

 

TX10M0CP-2

1/4"

Low Profile

9" Wand

S  

   

 

TX10M0EP-2

1/2"

Standard

S  

 

     

TX10M0EP-3

1/2"

Standard

S  

   

   

TX10M0EM-1

1/2"

Standard

S    

     

TX10M0EM-2

1/2"

Standard

S    

 

   

TX10M0EP-1

1/2"

Cylinder Probe -

Aluminium

S  

   

 

 

 

2 High temperature probes suitable for measuring 343°C (650°F)

S - Standard Undamped Transducer 

CT - Damped Coating Thickness Transducer

HD - Highly damped Transducer

H - Highly Damped Transducer

Accessories

Cables & Adaptators
TL-24030-6 T/Cable: 4' Dual Lemo to Lemo
TL-24030-7 T/Cable: 4' Dual Lemo to Microdot
TL-24030-8 T/Cable: 4' Dual Lemo to Microdot Single
TL-24030-9 T/Cable: 4' Dual Lemo to M/dot, HT Arm
TL-24031 RS232 Cable (6'); DB-9 to Lemo
TL-24032 USB to Serial Adapter
   
Couplant  
TC-24034-1 Couplant: Standard; 4oz Bottle (Material Safety Data Sheet)
TC-24034-2 Couplant: Standard; 12oz Bottle (Material Safety Data Sheet)
TC-24034-3 Couplant: Standard; 1 Gallon (Material Safety Data Sheet)
TC-24034-9 Couplant: Hi-Temp 510oC; 2oz Tube (Material Safety Data Sheet)

Instruction Manual

@PRODUCT_MANUAL

Data Sheet

@PRODUCT_DATA_SHEET