Experimental Investigation of Ideal Gas Behavior Using Real-Time Data Logger System

¹ Department of Physics Education, Universitas Negeri Jakarta, Jl. Rawamangun Muka, Jakarta 13220, Indonesia
² Department of Information System, Kalbis University, Jl. Pulomas Selatan, Jakarta 13210, Indonesia
³ Department of Chemical Engineering, KU Leuven, Celestijnenlaan 200F, B-3001 Leuven, Belgium
⁴ Department of Physics Education, Universitas Indraprasta PGRI, Jl. Nangka Raya, Jakarta 12530, Indonesia

^* Corresponding author: This email address is being protected from spambots. You need JavaScript enabled to view it.

Published online: 2 July 2026

Abstract

Understanding ideal gas macroscopic behavior is often constrained by conventional laboratory instruments with low temporal resolution and parallax errors. This study evaluates the reliability of a real-time data logger system in verifying the thermodynamic characteristics of gases under isothermal (Boyle’s Law) and isochoric (Gay-Lussac’s Law) conditions. The apparatus integrates a data logger station with a digital barometer and a thermocouple probe. Quantitative analysis employed linear regression and uncertainty evaluation based on the Guide to the Expression of Uncertainty in Measurement (GUM) framework. For Boyle’s Law verification, the experimental data yielded an average PV constant of 20286 hPa·mL with a relative uncertainty (RU) of 0.355%. Linear regression between pressure and reciprocal volume (P versus 1/V) produced a coefficient of determination approaching unity, indicating excellent agreement with the theoretical prediction. Meanwhile, Gay-Lussac’s Law testing yielded an average P/T constant of 3.30128 hPa/K with an RU of 1.541% and a coefficient of determination of 0.99. The low uncertainty values and high linearity obtained under both experimental conditions indicate that the developed instrumentation provides stable and reliable real-time measurements of thermodynamic variables. These findings demonstrate the suitability of the data logger system for quantitative investigations of gas behavior under controlled laboratory conditions.