The BetterPyc 380 is an automatic gas pycnometer that uses the gas displacement method to deliver highly accurate measurements with ease, offering precision at its best. With temperature control, pressure sensing, and intuitive software, it measures the volume, true density, solid content, and open cell content of your samples with up to 4-digit accuracy. Designed for research and production in a wide range of industries, the BetterPyc 380 will unlock the full potential of your products.

Features and Benefits

● Multiple Functions: Volume, Density, Solid Content, Open Cell Content

● High-Accuracy

● Effortless Operation

● Integrated Software Solution

● Friendly Sample Requirement

1) Features and Benefits

•  Multiple Functions

Provides four measurements, including volume, density, solid content, and open cell content, while maintaining the sample integrity.

•  High-Accuracy 

Ensures extreme accuracy and reliability with temperature control, high-resolution transducers, and calibrated chamber volumes.

•  Effortless Operation

Offers automatic measurement, calibration, and leak detection, which are accessible to operators of all experience levels. 

•  Integrated Software Solution 

Direct connection to balance and remote control to the external water bath.

•  Friendly Sample Requirement

Only needs a 1-100 cm3 sample and maintains the integrity of your samples.

 2) Working Principle 

This automatic gas pycnometer is designed based on the gas displacement method. It works by introducing an analysis gas, such as helium or nitrogen, into a sealed sample chamber of known volume and then expanding it into a precise reference chamber. By recording the pressures before and after expansion, the volume can be accurately measured.

①    Gas Pre-heating

The gas pre-heating is achieved through a precise temperature-control system that maintains a consistent temperature within a narrow range, leading to more accurate measurements. The temperature-control system is a crucial feature of the automatic gas pycnometer design.

②    Gas Displacement 

The gas is introduced into the sample chamber, displacing the empty space and penetrating the pores of the sample.The chamber lid, which provides a tight seal, ensures that the sample chamber is completely sealed and prevents any gas leakage during the measurement process.

③    First Pressure Equilibrium

Pressure 1 is recorded after the first equilibrium. The temperaturecontrol system maintains a stable gas temperature, allowing pressure to equilibrate to lower 0.005 psig/min. A high-resolution transducer measures the pressure inside the sample chamber after equilibration. 

④    Gas Expansion

The gas is then allowed to expand into a reference chamber. Dual built-in reference chambers match the free space in the sample chamber for accurate results. The appropriate chamber is selected automatically based on the sample cup size, making it an ideal choice for precise density measurements.

⑤    Second Pressure Equilibrium

Pressure 2 is recorded after the second equilibrium and the gas is vented into the atmosphere. After that. the result is calculated. An integrated vacuum pump extracts gas to improve purge efficiency and reduce measurement errors.

3) Industries We Serve 

The BetterPyc 380, which complies with many ASTM and ISO standards, is a versatile instrument that can be used in a wide range of industries. It is able to accurately measure the density of a wide range of materials, the solid content in slurries, and the open cell content in plastic foams, enabling process optimization and quality assurance in relevant industries.