The institute is constantly striving to improve the accuracy and reliability of its measurement methods in the field of measurement, control, and regulation technology (MSR). A key element of this effort is the precise calibration of temperature and humidity sensors, particularly within climate chambers. Against this backdrop, there is a need to systematically evaluate the calibration methods used in terms of their suitability, accuracy, and reproducibility. In particular, the study aims to determine whether calibration using a dry calibrator or a calibration bath is more suitable under the given conditions. In doing so, it is not only the comparison of measurement results that is relevant, but also a thorough error analysis of the entire measurement system. The objective of this work is to conduct a methodologically sound analysis of the existing measurement system (temperature and, if applicable, humidity measurement in a climate chamber). The focus is on the identification, quantification, and evaluation of all relevant sources of error in the measurement system, as well as on the comparison of two calibration methods:

• Dry calibrator
• Calibration bath

Based on the results, a well-founded recommendation will be made as to which method is more suitable in the given application context.

Basic knowledge of thermodynamics/energy engineering and measurement technology

The main division of refrigeration and heat pump technology at ILK Dresden focuses on cold vapor processes. To this end, individual components (compressors, heat exchangers, valves) are measured and further developed. In addition, processes and system configurations are also investigated. The results are intended to help cooperating industrial companies improve their products. These projects can be supported as part of student work. The topics presented below only provide a rough outline of the task. Depending on the type of student work (internship, coursework, thesis, etc.), the assignment will be individually tailored and adapted. Applications not sent to this email address will be automatically deleted after 14 days.