Unveiling the Best: LR-G300 vs LR-G200 – A Steel concrete scanner Showdown

Unveiling the Best: LR-G300 vs LR-G200 – A Steel concrete scanner Showdown

A man using LR-G300 concrete scanner

In the ever-evolving landscape of the construction industry, the importance of accurate and efficient rebar inspection cannot be overstated.

Langry LR-G200 and LR-G300, two cutting-edge rebar detectors, have emerged as key players in ensuring the structural integrity and safety of modern buildings.

This article provides a thorough comparative analysis, shedding light on their features, capabilities, and the crucial role they play in the construction sector.

I. The significance of rebar inspection instruments in construction:

Concrete scanners have become indispensable tools in the construction industry, Used for the detection of Reinforcement Position, Distribution, and Orientation, as well as concrete cover thickness test

These instruments play a vital role in guaranteeing the longevity and safety of structures, addressing the increasing demands for precision and reliability in contemporary construction projects.

II. Langry LR-G300: Advancements and distinctive features:

Weight and portability:

LR-G300 takes the lead with a remarkably lightweight design, weighing only 650g, enhancing its portability on construction sites.

Screen size and resolution:

Boasting a 3.5-inch screen with a resolution of 640*480, the LR-G300 provides a larger and clearer display, improving the user experience.

Scanning modes:

LR-G300 offers an impressive array of six scanning modes, including Quick, Procedural, Grid, Fine, Complex, and Wave, providing unparalleled versatility in detection scenarios.

Measurement range:

The instrument covers protective layer thickness from 1-210mm, showcasing a wider measurement range compared to its counterpart, LR-G200.

Precision and performance:

LR-G300 stands out with a protective layer thickness resolution of 0.1mm, marking a significant advancement in accuracy.

The detection performance is enhanced by 20%, ensuring more reliable and precise results.

Battery and operation:

Equipped with two plug-and-play batteries, LR-G300 enables continuous operation, addressing the need for extended usage in demanding construction environments.

Support for complex scenarios:

LR-G300 excels in supporting multiple detection modes under complex working conditions, including stirrup detection, concave detection, and convex detection.

High-altitude synchronization:

With the capability to be paired with an extension rod, LR-G300 facilitates high-altitude synchronous detection, addressing the challenges posed by elevated construction sites.

Advanced laser positioning:

The four-line laser positioning system, coupled with real-time display features, improves steel bar positioning accuracy, aiding in drilling and coring activities.

III. Langry LR-G200: Features and capabilities:

While the LR-G300 takes the spotlight with its advancements, the LR-G200 also boasts noteworthy features.

Weight and screen size:

Weighing 880g, LR-G200 is slightly heavier than its counterpart, LR-G300.

The 3.2-inch screen, with a resolution of 320*240, provides a clear display for efficient operation.

Scanning modes and measurement range:

Quick/ Profile /Grid / Fine / Image,similar to LR-G300, catering to diverse measurement needs.

The protective layer thickness measurement range spans from 1-205mm.

Integrated sensor structure:

LR-G200’s integrated sensor structure ensures ease of operation, streamlining the inspection process.

Correction of multiple stirrups:

The instrument permits the correction of multiple stirrups, contributing to more accurate testing results.

Data transmission options:

LR-G200 supports USB wire data transmission and Bluetooth wireless data transmission, facilitating quick and convenient data uploading.

LCD screen and interaction:

The 3.2-inch 65K color LCD screen provides a higher resolution and better display, enhanced by the capacitive touch screen for improved man-machine interaction.

IV. Comparative analysis:

Weight and portability:

LR-G300’s significantly lighter design makes it more portable, catering to the dynamic needs of construction sites.

Screen size and resolution:

LR-G300’s larger screen and higher resolution contribute to a better user interface, offering a clearer view of inspection results.

Scanning modes and measurement range:

LR-G300 introduces unique modes such as Wave and Complex, enhancing its versatility.

LR-G300 surpasses LR-G200 with a broader protective layer thickness measurement range.

Precision and performance:

LR-G300’s superior protective layer thickness resolution and enhanced detection performance make it the preferred choice for precise and reliable results.

Battery life and operation:

LR-G300’s dual batteries and continuous operation capability provide a longer battery life, crucial for extended usage on construction sites.


In conclusion, the Langry LR-G200 and LR-G300 rebar inspection instruments showcase advancements that cater to the evolving needs of the construction.