Platinum RTD high temperature thermometer

Date

6-1992

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Edvino G. Eusebio

Abstract

The objective of this thesis was to design and construct a platinum RTD high temperature thermometer with analog and digital outputs wherein the linear range is from 300°C to 600°C. An LF347 Quad JFET operational Amplifier IC was used to obtain the analog and digital outputs required. The analog outputs were in voltage. 3V to 6V were equivalent to 300 to 600°C. The digital outputs, on the other hand, were in frequency wherein 300 Hz to 600 Hz were equivalent to 300 to 600°C. Test results showed that, in linearity and accuracy, the linear range spanned from 250°C to 600°C. More than +1°C deviations were obtained below temperatures ranging from 250°C and below and temperatures exceeding 600°C. Deviations within the +1°C limit were obtained within the 300°C to 600°C. Mean standard deviation was obtained in the precision test. The different trial readings (for voltage output) vary from each other by 0.649°C and for the digital output, by 0.895°C.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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