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LBTP-5 Pavement Roughness Measuring Instrument

The LBTP‑5 pavement smoothness meter was developed by retaining the original instrument’s strengths while incorporating user feedback. In terms of electronic technology, it employs China’s most advanced microprocessor and large-scale integrated circuit technologies, enhancing overall system integration and reducing the number of unnecessary connectors and interfaces found in earlier models. This design improves system reliability, stabilizes performance across all functions, and ensures greater operational consistency. The device features a single‑CPU architecture that handles display, printing, computation, communication, and data acquisition. Data is sampled using an interrupt‑driven approach, enabling continuous measurement without interruption. It also automatically calculates distance; with a sampling interval of 0.1 meters and a memory capacity sufficient to store 1,000 measurement points, it can perform uninterrupted measurements over a range of up to 25 kilometers.

Category:

Pavement, Subgrade, and Aggregate Testing Equipment

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E-mail:

lbt@lbt.ltd

WhatsApp:

+86-15102211717

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LBTP-5 Pavement Roughness Measuring Instrument

Description

Product Introduction:

The LBTP‑5 pavement smoothness meter was developed by retaining the original instrument’s strengths while incorporating user feedback. In terms of electronic technology, it employs China’s most advanced microprocessor and large-scale integrated circuit technologies, enhancing overall system integration and reducing the number of unnecessary connectors and interfaces found in earlier models. This design improves system reliability, stabilizes performance across all functions, and ensures greater operational consistency. The device features a single‑CPU architecture that handles display, printing, computation, communication, and data acquisition. Data is sampled using an interrupt‑driven approach, enabling continuous measurement without interruption. It also automatically calculates distance; with a sampling interval of 0.1 meters and a memory capacity sufficient to store 1,000 measurement points, it can perform continuous measurements over a range of up to 25 kilometers.

Main Technical Functions

(1) Functionality and Accuracy

1. It can automatically measure, compute, and print the root-mean-square error. Sampling intervals of 0.05 m and 0.1 m are available, with a sampling error of 0.04 mm; under identical conditions, repeated tests yield a statistical deviation of less than 0.2 mm.

2. With manual data entry, the system can automatically print the test date (year/month/day) and the tested road segment number (road number, chainage, sampling point, and out-of-tolerance status). Each time a print is generated, the summary sequence number increments by one.

3. Automatically calculate and print the individual cumulative value H (in mm) for the measured section.

4. Automatically detects, calculates, and prints the measured segment length L (in meters), with an error of less than 1%.

5. Automatically measures, calculates, and prints the positive and negative exceedance values (K+ and K−). The exceedance criteria can be set independently according to pavement grade requirements, with limits ranging from 1 to 15 mm.

6. It can automatically measure, calculate, and print the test speed value V (unit: km/h).

(II) Traction Method and Testing Speed

Powered by passenger‑carrying human force or motorized traction, with a minimum turning radius of 3 m, the test speed shall not exceed 12 km/h; under non‑test conditions (with the frame shortened and the measuring wheels lifted), the towing speed is 25 km/h.

(3) Operating ambient temperature: (-10℃ to 40℃):

(4) Power Supply and Power Consumption: Gel‑type maintenance‑free battery, 6 V, 7.2 Ah

(5) Overall Dimensions: (Length × Height × Width, mm) 4061 × 450 × 600; Extended Length: 4061 mm; Retracted Length: 1950 mm.

(6) Instrument weight: Total machine weight 55 kg; electronic instrument box 3 kg.

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FAQs

Do you supply full-set testing instruments for asphalt and geotechnical engineering projects?

We offer complete lab solutions including asphalt viscosity tester, asphalt rutting tester, geotextile permeability tester, low-temperature flexibility tester and concrete/cement test equipment, covering raw material detection for road, water conservancy and construction engineering projects

Can you customize fixtures or test machines based on our special test requirements? How about after-sales service and warranty?

We provide non-standard customization of test equipment and customized fixture clamps according to customers’ specimen size and test standards. All our testing machines enjoy 12-month factory warranty; overseas customers get remote online debugging guidance, spare parts supply and technical operation training. Our products have been exported to over 70 countries globally

Which materials can be measured by your Vicat softening point tester?

It measures heat deflection temperature and Vicat softening temperature of plastics, hard rubber, nylon, insulating materials and fiber-reinforced thermosetting composites. Intelligent temperature control guarantees precise heating rate, ideal for plastic raw material incoming inspection and formula development in plastic factories.

Does your pipe pressure burst testing machine control test temperature automatically? What’s its main application?

Yes, the constant-temperature circulating system keeps stable test environment during long-time hydrostatic resistance and instant burst pressure measurement of thermoplastic pipes. It complies with GB6111 standard and serves raw material inspection, new product R&D for plastic pipe manufacturers, third-party testing labs and university laboratories.

What kinds of pipes fit your ring stiffness tester? Can it do long-term creep testing?

This equipment is designed for HDPE, PVC corrugated pipes, plastic drainage pipes and various plastic tubular products. Apart from ring stiffness, ring flexibility and flattening tests, it supports continuous long-term creep tests up to 1000 hours (42 days) as required by industry specifications, widely used for pipe factories and construction quality inspection institutes.

What test items can your WDW series computer-controlled electronic universal testing machine complete? Which international standards can it meet?

Our WDW universal tester is applicable for tension, compression, bending, shearing and peeling tests of metal, plastic, rubber and composite materials. It supports test procedures in accordance with GB, ISO, ASTM, DIN, JIS multiple domestic and global standards. Equipped with high-precision servo drive and dedicated test software, it automatically collects, calculates and exports test data including tensile strength, elongation at break and elastic modulus.

Customer Reviews

European Plastic Pipe Manufacturer｜Purchase: Ring Stiffness & Hydrostatic Burst Tester

From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

From Mohamed Kareem, Lab Manager, UAE third-party construction inspection institute

2026.06.05

★★★★★

“We compared multiple testing equipment brands from Europe and China before cooperating with Laibote. Their WDW universal tester and full-set geotextile testing instruments meet local construction testing standards perfectly. Custom fixtures tailored per our specimen specifications save much testing time. Pre-sale technical communication was patient and professional; engineers provided online operation training after goods arrived. Stable machine performance greatly improves our laboratory’s detection efficiency, we are satisfied with cost performance and overall service.”

Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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LBTP-5 Pavement Roughness Measuring Instrument

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Whatsapp:+86-15102211717
E-mail:lbt@lbt.ltd

Address:Tianjin Jinghai Economic Development Zone

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