• Model NO.：LM-4,LM-4D,LM-4DL
• Measure Method：Automatic
• Accuracy：A
• Precision Measuring Device：Precision Measuring Device
• Certification：CE, ISO
• Customized：Customized
• Product Name：Ultrasonic Thickness Gauge Meter
• Model：Lm-4D
• Display：Color OLED Screen
• Measuring Range：0.65-508 mm
• Working Principle：Ultrasonic Pulse Echo Method Using Double Crystal
• Measurement Resolution：0.01 or 0.1mm (0.001 or 0.01in)
• Unit：Millimeters or Inches
• Probe Calibration：One-Point Calibration, Two-Point Calibration
• The Measurement Update Rate：4Hz, 8Hz and 16Hz Per Second Are Optional.
• Gain：High, Medium and Low Gear Adjustable
• Power Supply：Two AA Batteries
• Operating Time：Two AA Batteries for More Than 35 Hours
• Size：153*76*37mm
• Weight：280g (Including Battery)
• Brand：Laboao
• Transport Package：Standard Export Case
• Specification：149*73*32mm
• Trademark：LABOAO
• Origin：China
• HS Code：8421192000
• Production Capacity：2000set,Month

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

Configuration list

Mainframe

1

Coupling agent

1

Probe

1

Battery

2

Packing document

1

Instrument seal box

1

Data line

1(only LM-4DL)

Communication software

1(only LM-4DL)

Note: If send it by air, not   including batteries, it's an empty bottle for Coupling agent.