Non intrusive thickness measurements
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Ultrasonic thickness gages or gauges

EESIFLO EES TG 11
MEASURE THICKNESS IN METRIC OR IMPERIAL UNITS
MEASURE THICKNESS IN METRIC OR IMPERIAL UNITS
MEASURE THICKNESS IN METRIC OR IMPERIAL UNITS
MEASURE THICKNESS IN METRIC OR IMPERIAL UNITS
Non intrusive thickness measurements of
Heat Exchangers, Tubing ,Pressure vessels ,Castings ,Forgings ,Boilers, Plastic , metal and glass pipe Machined Parts, Axles ,Rails,Wheels, Storage Tanks, Steamlines, Flanges , Ship hulls ,Decking Airframes, Aircraft windows,Plates ,Slabs,Blooms ,Billets ,Bars ,Plastic Sheets ,Pipes ,Rolls Glass Plates ,Beams ,Extrusions ,Bridges and many other surfaces that are sonically conductive
Description:

The EES TG 11 is a multi purpose industrial type ultrasonic thickness gauge. It uses the transit time ultrasonic wave propagation principle to measure the thickness of materials of several types including metals and plastics. The probe acts as a sender and receiver of a 5 MHz ultrasonic signal and an internal counter calculates the time taken for the signals sending and receiving through the solid being measured. The EES TG 11 can be set at different acoustic velocities depending on the material being measured. The instruction book includes a table of acoustic velocities for some of the commonly used materials. In the absence of the acoustic velocity of the material being measured, it is still possible to measure materials of this kind if a representative sample is available of a known thickness.
Reliable and easy measurements can be made on storage tanks, heat exchangers, machine parts, rails, plates, wheels, forgings , castings and pressure vessels.
Applications
Wall thickness measurements of hard materials , piping and hull plates
General inspection of metals including steel, cast iron, aluminium, copper, brass, titanium sheet metal, tanks, ships and piping systems
Inspection of glass , ceramics and hard plastics
Features
Built in calibration test block
Small and light weight
Detachable sensor piece
Easy operation
Specifications:
Range: 0.039in to 11.81in or 1mm to 300 mm
Resolution: 0.1 mm
Display: 4 Digit Liquid Crystal
Velocity: 1000 – 9000 m/s
Battery: Operated 2 x AA 20 hour operation and flashing when battery is low
Alarm: High & Low Alarm limit setting.
Dimensions: 156mm X 80mm X 32mm
Calibration Block: ±0.2mm Steel
Standard Sensor Operating Temperature: 0 – 50 °C (other options available)
Automatic Power Off: within 2 minutes

The TG-11 is a hand held microcontroller based ultrasonic thickness gauge. It operates on two AA type batteries and is very easy to use.

How an Ultrasonic Thickness Gauge Works

An Ultrasonic thickness gauge is a "TRANSIT TIME MEASURING DEVICE" working on a pulse-echo principle.

A burst of ultrasound is generated by striking a piezo-electric crystal of the transducer with an electrical pulse.

The sound then travels through the delay line of transducer across the layer of ultrasonic couplant and is then transmitted into the material being measured.

The sound pulse will continue to travel through the material until it reaches a material of a substantially different physical characteristic from the test material (e.g. air). The air then acts as a transmission barrier to ultrasound, hence it is reflected back to the transducer.

The time required by an ultrasound burst to make a round trip through the test material is accurately measured by the highly stable timing mechanism inside the instrument.

Reference
» Ultrasonic Glossary
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