High Performance Light Weight Deflectometer

Standards : ASTM E2835-11

It is used for the deflection value of layer subgrade under dynamic load, so as to evaluate the bearing capacity and deformation of subgrade. It is applicable to the monitoring and inspection of foundation construction quality of railways, highways, airports, urban transportation, ports, wharves and industrial and civil buildings under dynamic loads, especially for the inspection of narrow sections of the site, such as the inspection of transition sections and shoulders of roads and bridges (culverts), existing line foundations, etc. The instrument simulates the impact effect on the subgrade when the train is running at high speed, and can better reflect the actual stress of the subgrade soil than the static load test. It can quickly measure the dynamic deformation modulus EVD value.

Features:
* Imported sensors and some components are used, with high testing accuracy.
* Liquid crystal display, with backlight, has good visibility in various environments.
* The operation is simple and the test speed is fast. It only takes 35 seconds to detect a little.
* Automatically calculate EVD value and display curve, which is accurate and intuitive.
* The handheld host, equipped with Bluetooth micro printer, can print directly on site to ensure the accuracy and objectivity of the test results.
* USB transmission interface, easy to connect with the computer. It is more convenient and fast to use.
* The instrument simulates the impact effect on the subgrade when the train is running at high speed, and can better reflect the actual stress of the subgrade soil than the static load test.

Specification:
Test coverage : Product Model : EVD-W
Application Soil Types : Soil-rock mixed fillers with particle size less than 1/4of the diameter of loading plate
Test scope : 10Mpaa Evda 225Mpa
Test impact depth : 0~500mm
Work environment : Temperature: -10~40a Humidity: i 90%HR

Work environment :
Loading device : Weight: 15kg drop weight:10kg
Dropping height of drop hammer: 700A 20mm
Maximum impact force: 7.07kN
Shock duration; 18A 1ms
Loading plate : Weight:15kg Diameter: 300mm
Thickness: 20mm

Handheld host : Specifications : Screen size: 5 inches
Subsidence test range : Volume: 145x70x10mm
Weight: 110g
Storage capacity : 0.10mm~2.00mm
2000 sets of test data
Power supply mode : Large capacity lithium battery, working time more than 18 hours
Display mode : Handheld host screen
Data transmission mode : Data line transmission
Printer : Connection mode : Wireless Bluetooth Printing

Packing specification :
Host box : Material: Engineering plastics
Volume: 420x140x335mm
Weight: 4.5kg

Outer packing box : Material: Aluminum alloy
Volume: 1220x395x380mm