THE DESIGN OF TEMPERATURE CALIBRATION BATH USING THE QUALITY FUNCTION DEPLOYMENT (QFD) APPROACH

A temperature calibration bath is a calibrator with a uniform liquid enclosure that can be set to a certain temperature for the test point. In this study, a product design was carried out to make a temperature calibration bath instrument by modifying several parts so that it could achieve the desired temperature interval. The QFD approach was used to design tools that are in accordance with the Voice of Customer, among which are a wide temperature range, rust-resistant materials, ease of maintenance and operation, high accuracy, and affordable prices. Furthermore, the design also considered ease of reading the instrument, uniformity and stability of temperature, and speed of temperature change using the appropriate propeller and stirrer. The technical response was determined systematically to fulfil the customer’s wants and needs until the specifications of temperature calibration bath with oil operating fluid was decided.