Digital Ultrasonic Thickness Gauge with a-Scan Snapshot for Detecting Scars

• Type: Feeler Gauge
• Material: Aluminum Alloy
• Measurement Object: Squareness
• Range: 0.65-508 mm
• Resolution: 0.001mm
• Precision: 0.001mm
• Model NO.: LM-4
• Measure Method: Automatic
• Accuracy: A
• Precision Measuring Device: Precision Measuring Device
• Certification: CE, ISO
• Customized: Customized
• Product Name: Ultrasonic Thickness Gauge Meter
• Model: Lm-4
• 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

Product Description

Digital Ultrasonic Thickness Gauge With A-Scan Snapshot For Detecting Scars
LM-4 is a new generation thickness gauge, Breakthrough technology provides a thickness gauge with better performance for the same budget. It greatly improves the performance of previous ultrasonic thickness gauges and has better measurement stability and repeatability. It is widely used for wall thickness measurement of pipelines, pressure vessels and storage tanks in petrochemical, electric power, ships and manufacturing industries.

Feature:
 

1. Economical full digital thickness gauge 

All-digital thickness gauge needs to convert analog ultrasonic signals into digital signals, and then process the digital signals to obtain high-performance thickness measurement capability. The A-scan snapshot function, zero-crossing measurement technology and high resolution of LM-4 series are all based on all-digital technology. 

2. The innovative A-scan snapshot function  

LM-4 is the first product in the same file to provide A scan waveform display function. Acoustic non-ultrasonic wave is no longer an abstract concept that cannot be seen or touched. Users can directly see the ultrasonic signal waveform on the screen, which is used to verify whether the thickness reading is correct, analyze the cause of the problem, and help users find a solution to the problem.

3.  Adopt breakthrough zero-crossing measurement technology 

Based on all-digital technology and zero-crossing measurement technology, the thickness measurement value is not affected by echo intensity, material attenuation coefficient, gain and gate height, and has high measurement stability and reliability. 

4. The function of penetrating the coating

(1) Zero-free calibration; 

(2) high stability, the measured value is not affected by probe pressure, coupling layer thickness and dust stains on the surface of the workpiece; 

(3) Zero drift. 

5. More practical functions 

(1) Gain: adjustable for high, medium and low gears; 

(2) Alarm mode: dynamically change thickness reading color during alarm; 

(3) Difference/Reduction Rate: The difference mode shows the difference between the measured thickness and the preset thickness. The reduction rate is the percentage of thickness reduction calculated and displayed after the material is thinned. The typical application is to measure the metal material thinned due to bending. 

(4) Maximum/Minimum Capture: The current thickness value, minimum thickness value and maximum thickness value are simultaneously displayed on the screen.
Specification:
 

Model	LM-4
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.
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
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.