Lightweight Deflectometer (LWD)

Lightweight Deflectometer (LWD)

Lightweight Deflectometers (LWDs) are increasingly being used to determine overall compaction quality of all types of earthworks through their use as a QC/QA field test. LWDs provide a rapid determination of elastic modulus, which is an essential factor in mechanistic design and can be used as an accurate assessment of compaction. An LWD is used for measuring the bearing capacity (deflection) of subgrade/subsoils and unbound base layers, granular layers and backfilling materials, according to ASTM E2835-11. Based on the static plate load test requiring a load vehicle, the LWD provides a simple, fast and repeatable test providing an accurate assessment of compaction parameters. Applications for this non destructive method of testing include bearing capacity and compaction include road construction, pipeline and cable backfill, railway track beds, airport runway/taxiways, dam construction, embankments, foundations and other earthworks. Humboldt offers two versions of the Lightweight Deflectometers from HMP – deluxe models: the HD-4129.3F (10kg) and the HD-4159.3F (15kg) and basic units: the HD-4130.3F (10kg) and the HD-4149.3F (15kg). Both units are the same mechanism and differ only in the controller used with each one. The LWD is calibrated at time of manufacturing and comes with a calibration certificate. The calibration is valid for 1 year.
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Lightweight Deflectometer (LWD) Price in Bangladesh

Lightweight Deflectometer (LWD) is an advanced field testing instrument used for measuring soil and pavement compaction, and the Lightweight Deflectometer (LWD) Prie in Bangladesh is a commonly searched term among civil engineers and construction professionals seeking accurate and portable testing solutions. Designed for efficient on site analysis, this device provides fast and reliable results for evaluating ground stiffness and load bearing capacity.

The lightweight deflectometer works by applying a controlled load to the surface and measuring the resulting deflection. This process helps determine soil compaction quality quickly and accurately, making it an essential tool for road construction, earthworks, and geotechnical investigations. Its fast testing capability improves workflow efficiency and reduces the need for time consuming laboratory procedures.

Built with durability and field usability in mind, the device is engineered to perform reliably in challenging outdoor environments. Its robust construction ensures long term performance while maintaining measurement accuracy under varying site conditions. This makes it suitable for frequent use in construction projects and infrastructure development work.

The portable design of the Lightweight Deflectometer enhances ease of transport and operation. Users can quickly set up and perform tests across multiple locations without complex installation requirements. This mobility makes it highly effective for large scale projects where repeated testing is necessary.

Ease of use is another key advantage of this instrument. Its user friendly operation allows engineers and technicians to conduct tests efficiently, ensuring consistent and dependable results. The clear output data supports better decision making in soil evaluation and construction quality control.

Combining portability, accuracy, and durability, the Lightweight Deflectometer is an essential tool for professionals who require fast and reliable soil compaction testing in field environments.

Specifications: Lightweight Deflectometer (LWD)

Electronic settlement measuring instrument HD‑4129.3F
HD‑4159.3F
HD‑4130.3F
HD‑4149.3F
Settlement measuring range 0,1 bis 2,0 mm ± 0,02 mm
Measuring range Evd < 225 MN/m2
Temperature range 0 to 40 °C
Very robust, splash-water proof, connection cable with high-quality LEMO connectors
Graphic display in mm 56 x 73 38 x 68
Colorful, lightsensor-controlled and illuminated  
Black/white  
Help function  
Fast, efficient 32-bit processor  
Bluetooth, USB, thermal printer interface
GPS
Dimensions in mm 210 x 100 x 31 211 x 100 x 26
Storage capacity, internal in measurement series 1000 500
Power supply:
High-performance rechargeable lithium-polymer-battery 3,7 V, 6300 mAh  
4 x R6 Batteries  
Menu navigation (18 languages available)
Loading Mechanism
Total weight 15,0 kg
Drop weight 10,0 kg
Max. impact force 7,07 kN
Duration of impact 17,0 ± 1,5 ms
Material: zinc coated/hard-crome plated steel
Spring element 17 disk springs
Load plate
Diameter 300 mm, Plate thickness 20,0 mm
Total weight 15,0 kg, Material: zinc coated steel

2 Reviews For win Your Friends

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Steven Rich – Sep 17, 2016:
How all this mistaken idea of denouncing pleasure and praising pain was born and I will give you a complete account of the system, and expound the actual teachings.
William Cobus – Aug 21, 2016:
There anyone who loves or pursues or desires to obtain pain itself, because it is pain sed, because occasionally circumstances occur some great pleasure.

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