The Computerized British Pendulum Friction Tester is designed for accurate measurement of pavement friction and skid resistance. It features digital data acquisition, a 0–150 BPN measurement range, 0.1 BPN accuracy, temperature measurement, and a clear LCD display. Suitable for highway pavement testing, laboratory analysis, and field evaluation of surface friction.

Computerized British Pendulum Friction Tester

Model: TD969-1

I. Product Introduction

The Computerized British Pendulum Friction Tester is developed and manufactured by Hebei Tianqixingzi Inspection Equipment Co., Ltd. in accordance with JTG 3450-2019 Field Test Methods of Subgrade and Pavement for Highway Engineering (T 0969-2019 Test Method for Measuring Pavement Friction Coefficient Using a Digital Pendulum Tester), with reference to ASTM E303 and BS 598.

The tester is developed based on the fundamental principle that the loss of potential energy of the pendulum is equal to the work done by the rubber slider at the end of the pendulum arm to overcome pavement friction as it slides across the pavement surface.

II. Technical Parameters

Pendulum Head Mass: (1.50 ± 0.03) kg

Distance from Pendulum Center of Gravity to Pivot: 410 ± 5 mm

Pendulum Torque: 615,000 g·mm

Static Normal Pressure of Rubber Slider on Pavement: (22.2 ± 0.5) N

Rubber Slider Dimensions: 76.2 mm × 25.4 mm × 6.35 mm (±0.5 mm)

31.75 mm × 25.4 mm × 6.35 mm (±0.5 mm)

Distance from the Outer Edge of the Rubber Slider to the Pendulum Pivot: 510 ± 2 mm

Total Instrument Weight: Approximately 12 kg

Pendulum Value Accuracy: 0.1 BPN

Pendulum Value Range: 0–150 BPN

Power Supply: DC 12 V, 500 mA

Temperature Measurement Accuracy: 0.1°C

Temperature Measurement Range: 0–100°C

Continuous Operating Time: Up to 40 hours on a full charge

Display: 3.3-inch Chinese LCD screen, simultaneously displaying the operating status, pendulum value, temperature, battery voltage, test count, and other parameters

Operating Temperature: -15°C to 65°C

Overall Dimensions: 750 mm × 580 mm × 650 mm

III. Product Features

1. Digital Measurement: Equipped with a computerized measurement and data acquisition system for accurate and convenient pendulum value measurement.

2. Real-Time Display: The LCD screen simultaneously displays the pendulum value, test temperature, battery voltage, test count, and operating status.

3. High Measurement Accuracy: Pendulum value resolution reaches 0.1 BPN, providing reliable measurement results for pavement friction evaluation.

4. Portable Design: The compact structure and approximately 12 kg total weight make the tester suitable for both laboratory and field testing.

5. Long Battery Life: A fully charged battery supports up to 40 hours of continuous operation.

6. Temperature Measurement: Built-in temperature measurement function with a range of 0–100°C and an accuracy of 0.1°C.

7. Wide Operating Temperature Range: Designed to operate reliably from -15°C to 65°C.

8. Easy Operation: The computerized system simplifies data reading and reduces errors associated with manual readings.

IV. Applications

The Computerized British Pendulum Friction Tester is mainly used to evaluate the skid resistance and surface friction characteristics of pavement and other surfaces. It is suitable for:

Highway and road pavement friction testing;

Airport pavement skid resistance evaluation;

Laboratory testing of pavement materials;

Field inspection and acceptance testing;

Evaluation of pavement surface friction characteristics;

Quality control and maintenance assessment of road surfaces.