Light Weight Deflectometer (LWD) Manufacturer

Description
Main Specifications
Accessories

TBTLWD Series Light weight deflectometer, is a non-destructive(NDT) instruments, also called as dynamic deformation modulus tester (hand-held drop hammer deflection meter), it is used to determine the deflection capacity of the subgrade under the dynamic load, thereby evaluating the bearing capacity and deformation of the subgrade. It is applicable to the monitoring and inspection of foundation construction quality of railways, highways, airports, urban traffic, ports, terminals and industrial and civil buildings subjected to dynamic loads. It is especially suitable for the detection of narrow sections of the site, such as the transition of roads and bridges (culverts) and the detection of shoulders. , both line base and so on. It can quickly measure the dynamic deformation modulus Evd value.

Usage range

Soil type

Various types of soil and earth and rock mixed fillers with a particle size not larger than 1/4 of the diameter of the load plate

range

10Mpa≤Evd≤225Mpa

Depth

0～500mm

Working

environment

Temp.

-10℃～40℃

humidity ＜90%HR

Data acquisition device

Adding load method

With 1pc geophone sensor

Weight: 15kg, including hammer of 10kg

drop weight drop value: 700±20mm

Maximum impact: 7.07kN

Impact duration: 18±1ms

Loading plate

Weight: 15kg

Diameter: 300mm

Thickness：20mm

Handheld main unit

Deflection range

0.10mm~2.00mm

Capacity

2000 groups of data (TBTLWD-1G)

Refer to cell phone config, normally with 10G storage(TBTLWD-1GW)

Size

Screen size:

3inches(TBTLWD-1G) / 5 inch(TBTLWD-1GW)

Power supply

Li-battery of more than 18hours(TBTLWD-1G)

According to cell phone battery(TBTLWD-1GW)

Display

Screen display(Chinese/English switch)--TBTLWD-1G

Cell phone app--TBTLWD-1GW

Data transfer

Cable transfer (TBTLWD-1G)

Wifi transfer data(TBTLWD-1GW)

Printer

Connection

Bluetooth

Package

Carrying case

Inside case material: engineering plastic

measurement: around 420 × 140 × 335mm

Weight: around 4.5KG

Outside case material: aluminum alloy case

Measurement: around 1230 × 400 × 400mm

Weight: around 56KG

Light Weight Deflectometer (LWD) TBTLWD-1G/1GW

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