I.Introduction:

  UM-1D Through Paint Ultrasonic Thickness Tester have two operating modes: Standard mode and Coating mode.

  The operating principle of coating mode is E-E (echo-echo). When there is coating or oil paint on the surface of the object, the net thickness of the material can be directly measured neitherwithout necessarily removal of the coating nor without the calibration. While the defect of this mode is that the measuring range is relatively narrow: 0.118-0.709(with standard probe). The operating principle of standard mode is P-E. With the covered coating, the measurement will not be very accurate, so the coating should be removed before measuring in standard mode. The advantage of this mode is that the measuring range is relatively wide: 0.031-19.685 (with standard probe).

II.Parameter:

Operating principle:

Standard mode: P-E (pulse-echo) method with dual-element probes

Coating mode:  E-E (echo-echo) method with dual-element probes

Probe zero adjustment:

Selectable: 1-point calibration: normal measurement

                  2-point calibration: curve surface measurement or other special application with a high precision

V-path correction:

Automatic

Measuring range:

0.8mm to 300mm; 0.031in to 11.81in in standard mode

3.0mm to 18.0mm; 0.118in to 0.709in in through coating mode

Depending on probe, material and surface condition

Digital resolution:

0.001in or 0.1mm

Units:

Selectable: inch or mm

Display:

128×64 dot-matrix LCD screen (1.65in×2.24in; 42mm×57mm)

EL backlight and switchable contract ratio

Digit height: 0.54in or 13.75mm

Measurement update rate:

4 Hz in standard measurement mode

25 Hz in MIN capture mode

Material velocity range:

1000 to 9999 m/s; 0.039 to 0.394 inch/us

Power:

Two 1.5V AA alkaline batteries

Warning with low battery voltage

Operating time:

Up to 200 hours (without backlight) with alkaline batteries, depending on operating mode

Auto shut-off:

After 5 minutes of non-use

Size:

5.86in×2.87in×1.25in; 149mm×73mm×32mm (H×W×D)

Weight:

200g; 7oz (including batteries)

Operating language:

English and Chinese

Measuring error:

Up to 1in: ±0.002in or ±0.1mm

Above 1in: ± 1%H

H is the height of the testing object

Repeatability:

±0.001in or ±0.1mm