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Olympus 38DL PLUS User Manual

Olympus 38DL PLUS
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DMTA-10004-01EN, Rev. D, November 2016
Basic Operation
81
AUTO ETOE
The automatic echo-to-echo detection mode measures the thickness using the
time of flight between two consecutive back-wall echoes. Use this mode for
painted or coated materials since the time interval between consecutive back-wall
echoes excludes the time of flight through a paint, resin, or coating layer.
The DEAEtoE indicator appears to the left of the thickness reading. The
triangular marker is replaced by an echo-to-echo detection bar to indicate the
exact pair of back-wall echoes used to determine the thickness (see Figure 5-13 on
page 81). The echo height is automatically adjusted to a preset level.
Figure 513 Measuring with the automatic echotoecho detection mode
MANUAL ETOE
The manual echo-to-echo detection mode also measures the thickness using the
time of flight between two consecutive back-wall echoes. In this mode, you can
however also manually adjust the gain and the blanking parameters. Use this
mode when material conditions produce noisy signals where the automatic mode
may be less effective.
The DEMEtoE indicator appears to the left of the thickness reading. The echo-to-
echo detection bar is similar to the automatic echo-to-echo mode but includes the
adjustable E1 blank bar that indicates the area to exclude for echo detection (see
Figure 5-14 on page 82). Following the E1 blank, the instrument detects the next
echo with an amplitude of at least 20 % of the waveform display height. In this
mode, press [WAVE ADJ], and then use the arrow keys to adjust the EXT
BLANK, the E1 BLANK, and the GAIN parameters.
Dual element (DE)
automatic echo-to-echo
(AEtoE) detection mode
Echo-to-echo detection
bar

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Olympus 38DL PLUS Specifications

General IconGeneral
Operating Temperature-10 °C to 50 °C (14 °F to 122 °F)
Data LoggerYes
InterfaceUSB, RS-232
Thickness Range0.08 mm to 635 mm (0.003 in. to 25 in.) depending on material and transducer
DisplayBacklit LCD
Battery TypeThree alkaline or NiMH AA cells
PulserAdjustable square wave pulser
Receiver Bandwidth0.5 MHz to 20 MHz
LanguagesEnglish, French, German, Spanish, Italian, Russian, Japanese, Chinese
Resolution0.001 mm or 0.0001 in.
Transducer Frequency2 MHz to 30 MHz
MaterialPlastic housing

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