Time TT100 User Manual

General description

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1.1 Scope of applications

The handheld microprocessor-controlled thickness gauge is designed for
measuring the thickness of metals, and non-metallic materials e.g. aluminum,
titanium, plastics, ceramics, glass and any other good ultrasonic wave-conductor
as far as it has two parallel surfaces on the top and bottom.
The TT100 can be used in industrial applications to perform precise
measurements on various kinds of new materials, parts and components, and it
can also be used to monitor various kinds of pipes and pressure vessels for the
decrease of their thickness due to corrosion and/or erosion.

1.2 Basic working principle

The principle of ultrasonic wave in the thickness measurement is similar to that of
optical wave. The ultrasonic wave pulses transmitted by the probe will be reflected
back, while they reach the interfaces. The thickness of the object is determined by
precisely measuring the time the ultrasonic wave travels in the object.

1.3 Basic configuration and each part description of the tester

1.3.1 Basic configuration:

main processor: 1 piece
probe: 1 piece
coupling agent: 1 bottle

1.3.3 The name of each part of the testing meter (see figure below):

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LCD screen display:

BATT : low voltage indication
凸 : coupling indication for satisfactory acoustic

coupling between probe and test piece
m/s : measurement unit of sound velocity
mm : measurement unit of thickness

Keyboard:

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ON : power
ZERO: probe zero procedure
VEL : sound velocity value / 5 velocity are stored
▲-▼: adjustment keys for sound velocity, thickness, 10
memory units for thickness storage

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Performance parameters

Display type: 4-digit LCD
Minimum display unit: 0.1 mm
Measuring range: 1.0mm – 225.0mm in steel (with standard

probe) (other maximum values depending

on material)
Lower limit for steel pipes: 20 mm × 3.0 mm
Display accuracy: ±0.1mm
Sound velocity range: 1000 – 9999 m/s
Coupling check: satisfactory / no probe coupling
Range of operating temperature: 0℃～40℃
Working frequency 5 MHz
Update rate: 4 Hz
Power supply: two AA alkaline cells 1.5V
Battery life: 250 hours with one battery set
Dimensions: 126×68×23mm
Weight: 170 g

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