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ultrasonic thickness gages test expert
Product introduction:
Our factory development and production of UM-5 color screen with A-scan feature allows users gauge can be seen directly on the screen, color ultrasound signal waveform (or A-scan), coating thickness gauge , which need to verify whether the correct thickness reading is crucial occasions the. Many cases will lead to the wrong thickness readings or no readings, according to the waveform can easily find the problem, and then only on the waveform gain (GAIN), blanking (BLANKING), gate (GATE) to make appropriate adjustments to these three parameters, it is obtain the correct thickness readings.
Features:
Waveforms useful: Verify thickness readings according to the waveform, the waveform to find the problem, according to the waveform to seek solutions, according to the waveform adjustment parameters solve the problem.
Explain the principle:
Using pulse - echo ultrasonic thickness ordinary principles need to meet the following two conditions for successful measurements:
1,First backwall echo is higher than the gate (gate level height is fixed and non-adjustable).
2,First backwall echo is no other clutter than before the gate (or measured clutter will be generated at the thickness).
In many cases may not be able to meet the above requirements, such as near the surface highly corrosive, coarse-grained material (such as cast iron), aluminum, small diameter tubes, thin plate, thick plate, the surface roughness, unevenness inside the material, containing the defect, laminated structure, etc., will be powerless ordinary ultrasonic thickness gauge.
Real-time color A-scan (Live Color A-Scan):
On the screen, the user can directly see the color ultrasound signal waveform (or A-scan), which need to verify the correct thickness reading is crucial occasions. Many cases will lead to the wrong thickness readings or no readings, according to the waveform can easily find the problem, and then only on the waveform gain (GAIN), blanking (BLANKING), gate (GATE) to make appropriate adjustments to these three parameters, it is obtain the correct thickness readings.
Gain adjustment (GAIN):
Adjust the instrument of the echo signal amplification, allowing the unit to ldB manually increase or decrease. This function of the sound attenuating material (such as metal casting) is a very effective measure.
Blanking function (BLANKING):
The red blanking waveform within the scope of Article invalid measure of the harmful effects can be neglected clutter, such as due to surface roughness or unevenness caused by the internal noise.
Height adjustable gate (GATE):
Only echoes above the gate, the instrument was considered the echoes received, will have measured values. Visible height adjustable gate importance, especially in the low echo signal in response especially in applications (such as thin plate, thick plate measurement).
Red arrow:
scan mode with a red arrow indicates the measurement point, the thickness reading is the abscissa of the point. It can help determine the thickness reading is correct, the correct measurement, the red arrow points to the first backwall echo frontier.
Range (RANGE):
Adjust the display range of the waveform on the screen, the visual waveform is compressed or expanded. If you do not set up correctly display range may be out of the echo waveform display area and can not see, but still displayed correctly measured values.
Pan (DELAY):
Adjustment of the waveform displayed on the screen starting position of the waveform is visually moved horizontally. If the pan is not set correctly, the echo waveform display area may be a while to see, but still displayed correctly measured values. Scope and pan feature to magnify any part of the waveform displayed on the screen.
Rectification mode:
Selectable RF, positive half wave, negative half-wave, full-wave rectifier four kinds of ways.
RF: depicting a complete echo waveform;
Positive half wave: refers to the negative half-wave echo removing only the positive half-wave;
Negative half-wave: Refers to remove echo the positive half-wave and the negative half-wave flipped displayed as positive;
Full-wave: refers to echo the positive half-wave and flip the negative half-wave is positive are shown.
Rectification mode setting Alarm mode
Alarms can be set to the upper and lower alarm limit. Alarm waveform and thickness values dynamically change color.
Reduced rate measurement
Instrument has a difference and reduced rate mode. Differential Mode shows the measured thickness and the default thickness.
The difference between the degree of change. Reduction rate is calculated and displayed reduced material thickness after thinning the percentage reduction. Typical applications are curved due to the thinning of the metal material is measured.
Alarm when the positive half-wave Min / Max Mode
The pattern on the screen simultaneously displays the current thickness, minimum thickness and maximum thickness value. Drag the probe along the surface of the workpiece, the instrument automatically find the thinnest and thickest value
Variety of probe options:
Instruments built a variety of probe V-path correction procedures, sub-standard probe, small diameter tube probe, micro-probe, coarse grain probe, temperature probe, the frequency range from 2 to 10MHz, wafer sizes from 4 to 12mm. In general, the higher the frequency the smaller the diameter of the probe, the more suitable for thin or curved work piece measurement.
UM-5 coating thickness gauge Technical data:
|
Principle of work |
Using double crystal probe ultrasonic pulse / echo method |
|
Measuring range |
0.5 to 508 mm ( 0.02 to 20 inches ) Depending on the probe , material, surface condition and temperature |
|
Units and Display Resolution |
Mm -0.01,0.1 Inches -0.001,0.01 |
|
Display Mode |
thickness value model A scan or waveform mode min / max capture mode Difference / thinning rate mode |
|
V path correction |
Automatic V-path correction , compensating non-linearity duals |
|
Indication error |
± 0.05mm (25mm less ) ± 0.2% H (100mm or less) ± 0.5% H (100mm or more ) Note: H is the thickness of the measured object |
|
Display |
320 × 240 dot , 2.4-inch true color screen |
|
Measuring rate |
4 measurements per second |
|
Material Velocity Range |
500 ~ 9999m / s, 0.0197 ~ 0.3937in/us |
|
Power supply |
Two 1.5V AA batteries |
|
Operation time |
Two 5 batteries, use time more than 36 hours |
|
Automatic shutdown |
5 minutes off automatically after no operation |
|
Operating Temperature |
-10 °C ~ +50 °C, there are special requirements up to -20 °C |
|
Size |
153mm × 76mm × 37mm (H × W × D) |
|
Weight |
280g with battery |
|
Standard configuration
|
UM-5 Gauge Standard probe Instrument case Two 1.5V alkaline batteries Coupling agent Operation Manual |
|
Attachment
|
Wide choice of probe ; step test block ; coupling agents, coupling agents temperature |
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