Umjeravanje mjerila temperature

master's thesis

• Title (english): Calibration of thermometers
• Author: Niki Orešković
• Mentor: Danijel Šestan (mentor)
• Granter: University of Zagreb; Faculty of Mechanical Engineering and Naval Architecture; Zagreb
• Defense date and country: 2022-07-20, Croatia
• Scientific / art field, discipline and subdiscipline: TECHNICAL SCIENCES; Mechanical Engineering; Process Energy Engineering

Abstract

Zadatak ovoga rada bilo je umjeravanje šest industrijskih platinskih otporničkih termometara Pt100 klase A etalonskim platinskim otporničkim termometrom Pt25.U tu svrhu bilo je potrebno konstruirati mjernu liniju u Laboratoriju za procesna mjerenja(FSB-LPM). Mjerila temperature su umjerena u temperaturnim točkama 50 °C, 150 °C, 250 °C i 350 °C. Umjeravanja su provedena u dvije različite zone kontrolirane temperature. Za temperaturne točke 50 °C i 150 °C korištena je termometrijska uljna kupka, dok je umjeravanje u temperaturnim točkama 250 °C i 350 °C provedeno u termometrijskoj peći. U ovom radu je dan opis umjeravanih termometara, opreme korištene za umjeravanje, postupak provedbe umjeravanja termometara te izvora mjernih nesigurnosti identificiranih prilikom umjeravanja. Na kraju rada su tablično prikazani rezultati umjeravanja.

Abstract (english)

The aim of this research was calibration of six industrial platinum resistance thermometers Pt100, class A. Reference temperature was determined using standard platinum resistance thermometer Pt25. Measurement system was assembled in the Laboratory for Process Measurements at the Facluty of Mechanical Engineering and Naval Architecture in Zagreb (FSBLPM). The thermometers where calibrated in temperature points of 50 °C, 150 °C, 250 °C, and 350 °C. Calibration was performed using two different zones of controlled temperature. At temperatures of 50 °C and 150 °C, calibration was performed by using a thermometric oil bath. For temperatures of 250 °C and 350 °C, a thermometric furnace was used. This work contains description of calibrated thermometers, calibration equipment, calibration procedure and estimation of related measurement uncertainties. Calibration results are given at the end of this work.

• Keywords: umjeravanje; industrijski platinski otpornički termometar; zona kontrolirane temperature; uljna kupka; termometrijska peć; mjerna nesigurnost
• Keywords (english): calibration; industrial platinum resistance thermometer; zone of controlled temperature; oil bath; thermometric furnace; measurement insecurity
• Language: croatian
• URN:NBN: urn:nbn:hr:235:691430
• Study programme: Title: Mechanical Engineering; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra inženjer/inženjerka strojarstva (magistar/magistra inženjer/inženjerka strojarstva)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2022-07-18 07:14:24