Model |
LM-4 |
LM-4D |
LM-4DL |
Measuring range |
0.65-508 mm (0.025 - 20.00 inches) depends on the probe used, the material to be tested, and the surface condition. |
Penetration coating function |
NO |
YES |
working principle |
Ultrasonic Pulse Echo Method Using Double Crystal Probe |
Lower limit of pipe measurement (steel) |
φ 20 mm * 3.0 mm (PT08 probe); φ 15 mm * 2.0 mm (small diameter tube probe) |
Measurement resolution |
0.01 or 0.1mm (0.001 or 0.01in) |
Unit |
Millimeters or inches |
Display |
2.4QVGA (320×240) color OLED screen with contrast ratio of 10000:1 |
Repeatability |
±0.05mm |
Probe calibration |
One-point calibration, two-point calibration |
Measurement error |
0.05 mm (less than 10 mm) (0.5% h+0.01) (more than 10 mm) Note: h is the thickness of the measured object |
The measurement update rate |
4HZ, 8HZ and 16HZ per second are optional. |
The sound speed range of the material |
500-9999m/s,0.0179-0.3937in/us |
Storage function |
/ |
Store100,000 thickness values |
Alarm function |
The maximum/minimum alarm, alarm dynamically change the thickness reading color |
Gain |
High, Medium and Low Gear Adjustable |
Display mode |
Thickness value mode, minimum/maximum capture mode, difference/reduction rate mode |
V path correction |
Automatic A-range correction to compensate nonlinearity of bimorph probe |
language |
Chinese, English, Japanese, German and French are available |
power supply |
two AA batteries |
Operating time |
Two AA batteries for more than 35 hours |
Automatically shut down |
Optional 5, 10, 20 minutes after no operation automatically shut down, or only manually shut down |
working temperature |
-10ºC ~+50ºC, with special requirements up to -20ºC |
Size |
153*76*37mm |
Weight |
280g (including battery) |
Standard configuration |
Thickness gauge host, standard probe, instrument box, two alkaline batteries, coupling agent, operation manual, certificate of approval and packing list |
Optional accessories |
Rubber jacket; A variety of selectable probes; Step test block for calibration; Coupling agent and high temperature coupling agent |