Smart Sensor Model AS850, Инструкция по эксплуатации

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Keypad
1.4 Specification
Display: 4-digital LCD display
Minimum display unit: 0.1 mm
Working frequency: 5MHz
Measuring range: 1.2 to 225.0mm (steel)
Minimum limit for tube measuring:
Φ
20*3mm (steel)
Accuracy: +/- (1%H+0.1)mm,H denotes the measured thickness.
Sound velocity range: 1000 to 9999 m/s
Measuring sound velocity with a given thickness: measuring range:
1000 to 9999 m/s. When the given thickness over 20mm, the accuracy
is +/-5%; when the given thickness less than 20mm, the
accuracy is +/-1mm/H*100%.
Operation temperature: 0
to 40
Power supply: 3*1.5V AAA alkaline batteries
Operation current: Normal operation current
50mA
With Backlight turn on current 120mA
Stand-by current: 20uA
Size: 70.0*145.5*28mm
1.5 Features
Auto calibration to assure the accuracy.
Auto linear compensation: this advanced software program enha
nces the precision by correcting the non-linear accuracy of transducer.
℃ ℃
≤
≤
≤
Take care for measurement while measuring the known rusting spot/
suspicious area. or using sound insulation boardcelotex to locates the
spot in different testing angles.
5.3 Identify different velocity with vary material
A fault reading would obtains, when measuring the hardware with the
velocity calibrated by prior material. So a correct velocity should be ad-
opted. The fault reading may also result form the difference between
the actual velocity with the calibrated value.
5.4 Abrasion fo the transducer
Because the transducer is made of propylene, long period use will cause
the surface of transducer became more rough which will decline the sen-
sitivity lead to the wrong reading. Please polish the surface with sand
paper or whetstone to assure the smoothness and parallel. If the reading
still unsteady, the transducer should be replaced with new one.
5.5 “ CAL ” function
“ CAL ”(calibration) is used to calibrate the unit with the standard block
on the panel, do press this key for calibration with other materials or the
wrong measuring will take place.
5.6 Multilayer / composite material
It is impossible to read out the thickness of the uncoupled multilayer for
the ultrasonic wave can not go through the uncoupled space. Further
more, the sonic wave cannot travel in the composite material at an even
speed, so ultrasonic reflect principle cannot be applied for measuring
the multilayer/composite material.
5.7 Influence from the oxidized surface
For some metals, such as aluminum a layer of oxide being generated
on their surface. The oxidized layer combined with the substrate tightly,
but the sonic wave travel within 2 different material which will lead to
error reading, the more oxidized layer the reading will be more tolerant.
Please calibrated the unit with the sample block that pick up along the
hardware to be measured, and obtain the thick of sample block by using
4. Keypad diagram
ON/OFF -- ON/OFF key
CAL -- Calibration key
VEL -- Sound velocity key
STORE -- Measurement
data stored key
CAL+ON/OFF --Backlight active keys
--Sound velocity, thickness,
thickness unit adjust/recall key
--Sound velocity, thickness,
thickness unit adjust/recall key
VAL
LIGHT CAL
STORE