MTG & PTG Range

Ultrasonic Thickness Gauges

Easy

The MTG & PTG range of ultrasonic thickness gauges have been designed specifically to make

them easy to use, calibrate, take readings and create inspection reports.

Accurate

Both the MTG & PTG range have  measurement accuracy of +/-1% across its full range of 0.15mm

(0.006”) PTG up to 500m (20”) MTG. Accurate and repeatable readings can be taken on smooth,

rough and curved, coated or uncoated surfaces. The stability indicator provides a visual indication

of both the strength and reliability of the ultrasonic signal.

Efficient

Whilst the MTG2 and MTG4 have a set measurement repetition rate of 4Hz (4 readings per second),

the MTG6, PTG6, MTG8 & PTG8 have user selectable measurement rates of 4, 8 and 16 Hz (4, 8 or 16

readings per second). The MTG6, PTG6, MTG8 & PTG8 also have high speed scan mode allowing

140+ readings per minute to be taken on large surface areas.

Measurement modes explained

The Elcometer NDT MTG & PTG range has a number of measurement modes available to help the

user establish the most accurate thickness value. The modes available vary between models but

normally increase as the mode number increases.

Pulsed – Echo Mode (P-E):

Ideal for pit and flaw detection, the total thickness from the base of the transducer to the material

density boundary  (typically the back-wall) is measured.

Echo – Echo ThruPaint™ Mode (E-E):

Also known as ThruPaint™ mode, the coating thickness is ignored and the material thickness from the

top surface of the material to the material density boundary (typically the back-wall) is measured.

To use Echo-Echo ThruPaint™ mode, a high damped, coating thickness transducer is required.

Interface Echo (I-E):

A highly accurate measurement mode, Interface Echo displays the total thickness from the top

surface to the material density boundary.

Plastic Mode (PLAS):

A mode specifically used for measuring very thin plastics. A special graphite delay line accessory is

required for this mode.

Velocity Mode (VM):

Velocity mode measures the speed of sound of materials and is ideal for determining the homogeneity

of a material/alloy and  the correct velocity of a material for calibration.

Features

§  Pulsed-Echo (P-E) and Echo-Echo ThruPaint™ (E-E) measurement modes

§  1-Point, Material and Factory calibration options

§  Pre-set measurement rate of 4 readings per second.

§  USB data output to PC or similar device

With a choice of calibration options and measurement modes, the MTG4 is ideal for taking readings

on a wide range of coated and uncoated materials.

As well as all the features of the MTG2, the MTG4 has two calibration options. Using an uncoated sample

of test material of a known thickness, the gauge can be calibrated using 1-Point calibration. Alternatively,

the user can select one of 39 pre-set materials stored within the gauge including; aluminium, steel, stainless

steel, cast iron, plexiglass, PVC, polystyrene and polyurethane.

Echo-Echo ThruPaint™ (E-E) measurement mode enables readings to be taken on coated materials with a

thickness range up to 25.4 mm (1”). In Echo-Echo ThruPaint™ mode, the coating thickness is ignored and

the material thickness from the top surface of the material to the material density boundary is displayed.

Compatible with ElcoMaster™ software, individual readings can be downloaded via USB to PC or

similar device for further analysis.