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In addition to the entire functions of UM-1, UM-2 has the additional functions: 

1, 0.01mm Resolution. 

2, 7 built-in probe compensating lines. 

3, Two-spot Calibration: Favorable linearity will be provided measuring the wall thickness of the curved surface.

Specifications

Operating principle

Ultrasonic pulse/echo method with dual-crystal probes

Measuring Range

0.8-300mm (standard method) depending on probe ,material and surface condition

Unit , Display Resolution

mm-0.01, 0.1

inch-0.001, 0.01

Probe zero adjustment    1-Point Calibration (normal measurement)

2-Point Calibration (curve surface measurement or other special application with a high precision)

V-path correction:

Automatic

Measuring Error

Up to 10mm:±0.05mm

Above 10mm: ±(0.5%H+0.01)mm 

 H is the height of testing object

Repeatibility

±0.05mm

Display

128×64dot-matrix LCD screen with EL backlight (42×57mm)

Measuremet Update Rate

4Hz in Standard Mode

Material Velocity Range

1000-9999m/s, 0.0394-0.3937in/us

Data Logger Capacity

Up to 500 readings can be divided into a maximum of 5 files(user-selectable)

Operating Language

English, Chinese

Power Supply

Two 1.5V  AA alkaline batteries warning with low battery voltage.

Operating Time

Up to 200 hours(without backlight with alkaline batteries)

Auto Shut-off

After 5 minutes of non-use

Operating Temperature

-10  ºC-  +50  ºC,   Specification to -20  ºC   on request

Size

149mm×73mm×32mm (H×W×D)

Weight

200g including batteries

Standard Package

UM-2 thickness gauge unit

Standard probe

Carrying Case

couplant (Empty Bottle)

Operating Manual

Certificate of Quality

Packing list

Optional Accessories

Rubber sheath; Numerous special probes on request

4-step/5-step/6-step calibration block;

Couplant and high-temperature couplant;Application software with Data transmission cable