This hydrostatic balance works based on Archimedes' principle of buoyancy. When a sample is weighed in air and water respectively, the weight difference is generated due to buoyancy. By calculating this difference, the volume of the sample can be obtained, and then the density or relative density can be calculated.

Hydrostatic Balance

Model:TDTP-JS

I. Product Introduction

The TDTP-JS series Hydrostatic Balance is developed and manufactured by Hebei Tianqixingzi Testing Equipment Co., Ltd. in accordance with the Ministry of Transport of the People’s Republic of China industry standard JTG E40-2007 “Test Methods of Soils for Highway Engineering”, specifically T0169-2007 “Buoyancy Method”.

This test method is applicable to soils with particle sizes greater than or equal to 5 mm, and the mass of particles greater than or equal to 20 mm shall be less than 10% of the total soil mass.

Based on the Archimedes’ principle of buoyancy, this equipment is used to determine the mass variation of soil or granular materials in water, thereby calculating their density or relative density. It is a precision weighing instrument widely used in highway engineering, geotechnical testing, and material inspection.

II. Technical Parameters

1. Model:

TDTP50001 Hydrostatic

TDTP100001 Hydrostatic

TDYP50001 Hydrostatic

TDTP20002 Hydrostatic

2. Weighing Range:

0–5000 g

0–10 kg

0–5000 g

0–2000 g

3. Readability:

0.1 g / 0.01 g

4. Repeatability:

±0.2g

5. Linearity Error:

±0.2g

6. Weighing Pan Dimensions:

170mm×170mm

143mm×192mm

7. Container Dimensions:

Ф20×24cm

8. Basket Dimensions:

Ф16×27cm

9. Overall Dimensions:

39cm×24.5cm×48cm (Length×Width×Height)

10. Power Supply:

110V / 220–240V AC

III. Product Applications

This hydrostatic balance is widely utilized in the following testing fields:

Density testing of geotextiles using the buoyancy method;

Determination of soil particle density and relative density;

Testing of road and railway subgrade materials;

Density analysis of construction materials;

Density testing of aggregates and granular materials.

This equipment is particularly well-suited for the precise weighing and analysis of soil samples and granular materials with larger particle sizes.

IV. Product Features

High-precision sensor ensures stable and reliable measurements;

Supports multiple weighing ranges to accommodate various sample types;

Robust construction designed for long-term laboratory use;

Simple operation, compliant with standard testing procedures;

Suitable for density determination using the buoyancy method (T0169-2007);

Clear digital display provides intuitive readings;

Available in multiple basket and container specifications to suit diverse samples.