Light Weight Deflectometer (LWD)↓
Fast, reliable soil testing and compaction control ↓
On-site compaction testing for construction projects
The Light Weight Deflectometer (LWD) is used for on-site soil testing and compaction control in construction projects.
It helps engineers verify soil quality directly in the field and ensure proper compaction before further work.
Used to measures soil stiffness and compaction quality. Therefore, it ensures reliable construction outcomes.
You need this when:
– performing on-site compaction testing
– verifying soil quality during construction
– ensuring compliance with specifications
Light Weight Deflectometer (LWD)
The Dynatest Light Weight Deflectometer (LWD) is a portable version of the Falling Weight Deflectometer (FWD).
The LWD uses a load cell and geophones with the same accuracy as the Falling Weight Deflectometer.
The LWD can be used to test thin asphaltic pavements, recycled materials bound with foamed bitumen and directly test unbound subbase and subgrade.
The output from the LWD can be used to calculate the strength of multiple pavement layers.
The Light Weight Deflectometer (LWD) meets the ASTM 2583, the BS 1924-2 (UK) standard and more international standards for determining the modulus and compaction of the material. With this high quality LWD it is easy to do measurement in even the most rural places.
Free Free data collection and export tools included for Dynatest Light Weight Deflectometer (LWD)
With your purchase of the Dynatest Light Weight Deflectometer (LWD), you will get free access to the Dynatest LWD Software Suite, which includes:
The LWD App, available for both iOS and Android, enabling easy data collection directly in the field and a clear overview of your measurements along with a variety of export options, including export of datasets directly to your phone, iCloud, or sharing through email.
LWD Connect (Seamless Integration), available on your PC through DynaHub, allowing you to connect remotely to the LWD app on your phone and quickly download even large LWD projects directly to your PC.
LWDMod software. Based on Dynatest’s ELMOD technology, this allows you to evaluate layer stiffness and identify weak layers and generate engineering reports. One license for LWDmod is included in the purchase of an LWD.
When you purchase a Dynatest Light Weight Deflectometer (LWD), you will receive the LWD Software package free of charge.
Watch it in action and see the difference it makes
In this video, see how the LWD combines reliability and performance, showcasing its ability to exceed expectations in real-world applications.
Key benefits
- Single person operation
- LWD Software Suite is free of charge. It gives a clear overview of the collected measurements.
- Rapid test allows close test point spacing ensuring homogeneity of the test section.
- Modulus output at time of test.
- Assessment of both the compaction and stiffness of material with the same unit.
- Quality control of the subbase layers and subgrade before an overlay is applied.
- Testing of trench restorations to reduce the chance of settlement over time.
Read about the Light Weight Deflectometer Smart Features
Don't confuse ASTM E2583 and ASTM E2835
Not all LWDs are built on the same standard. The standards have similar numbers but describe different test methods, sensor technologies, and measurement principles. ASTM E2583 specifically covers Light Weight Deflectometers (LWDs), while ASTM E2835 covers Portable Impulse Plate Load Test Devices.
Dynatest LWD is based on ASTM E2583, using geophones and a load cell to measure both deflection and force. Other devices follow ASTM E2835, where measurements are indirect and less precise.
Lower accuracy can lead to wrong decisions on site.
Animated LWD Overview
See how the Dynatest LWD measures pavement layer performance and supports fast, non-destructive quality control in the field. Ideal for construction quality control and laboratory testing, the LWD delivers fast and reliable evaluation of unbound layers.
LWD 3032 Base Unit!
Including:
- Transportation box for base unit
- One center geophone
- Dual Plate System (150 and 300mm plate)
- 10kg weight (and 10kg weight buffer)
- 100mm plate
- Ribbed rubber mat
- Load plate centre hole plug
- LWDConnect Software Suite (LWD App, LWD Connect and LWDmod).
Get a closer look
Drop Weight
10, 15 or 20 kg delivering up to 3,300 lbf (15 kN) of force
Buffer Stack
Easily adjustable to accommodate the different drop weights
Electronics Unit
Compact data acquisition using any phone as an interface. Rechargeable through USB-C
150 mm Loading Plate
Combine and write something about it being an adjustable Dual Plate System (DPS). You can quickly remove the outer ring, so you can switch between 150 mm and 300mm.You can also switch the 150mm plate to a 100mm plate with an attachable 200mm plate, so you can switch between that combination.
300 mm Loading Plate
Combine and write something about it being an adjustable Dual Plate System (DPS). You can quickly remove the outer ring, so you can switch between 150 mm and 300mm.You can also switch the 150mm plate to a 100mm plate with an attachable 200mm plate, so you can switch between that combination.
Snap Lock
Use this button to explain part of the stuff above.
Optional LWD Accessories
A comprehensive optional accessory program are available to enhance your use of our LWD.
Optional LWD Accessories:
- Transportation Trolley, for ease of transportation on-site
- Geophone Kit, Sensor Beam incl. 2 additional geophones
- Transportation box for Geophone Kit
- Additional 200mm Loading Plate
- Extra 5kg weights and required buffer plates (Possibility to add 2 additional 5kg weights)
Talk to an expert about your needs
LWD Training Courses
Our training courses are designed to provide you with in-depth knowledge ensuring effective use of our Dynatest LWD and software. These courses are tailored to meet the needs of beginners and experienced professionals.
Training Courses:
- LWD Software training online – 3 hours
- LWD online equipment training – 3 hours
- LWD Equipment & Software Training on-line, 6 hours
- LWD Equipment & Software Training, *on-site, 6 hours
*Please note that we will add costs for travel time, flight and accommodation etc. for training on-site at your location.
Order LWD Basic Unit
Order details
Request your LWD. No payment is required at this stage.
We will review your request and contact you with confirmation and next steps.
Your order
Product: Dynatest LWD
Quantity: 1
Total: €
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