Selecting The Measurement Mode - Elcometer NDT PTG6 Guia Del Usuario

4 GETTING STARTED (continued)

4.6 SELECTING THE MEASUREMENT MODE

Three measurement modes are available for selection; 'Interface
Echo', 'Echo-Ech' and 'Plastic Mode'. See Table 1: Measurement
Modes for further information.
Measurement
Mode
Interface Echo
(IE)
Echo-Echo
(EE)
Plastic
Mode ( PLAS )
Note: The gauge should be re-calibrated when the measurement mode is changed -
see Section 7 'Calibrating your Gauge' on page en-13. The calibration icon will
flash intermittently to indicate that re-calibration is required.
To select the measurement mode, press
Menu/Setup/Reading/Measurement Mode.
4.7 SELECTING THE MEASUREMENT UNITS
PTG gauges can display readings in mm or inches. To select the
measurement units, press Menu/Setup/Units.
b
Thickness range is dependent on the material being measured and the transducer used.
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TABLE 1: MEASUREMENT MODES
Icon Description
The total thickness from the top of any coating
through to the material density boundary (typically
the back-wall) is measured. Suitable for
measurement of materials between 1.65mm and
25.4mm (0.065" to 1") thick.
Ideal for measuring thin materials, the material
thickness from the top surface of the material to
the material density boundary (typically the back-
wall) is measured. Suitable for measurement of
materials between 0.15mm and 10.15mm
(0.006" to 0.4") thick.
PLAS Specifically used for measuring very thin plastics
between 0.15mm and 5mm (0.006" to 0.197")
thick. A graphite delay line is required when using
this mode, see Section 16.2 'Delay Lines' on page
en-29.
b
b
R
b
en-8