Gas Temperature Measuring Apparatus Using Ultrasonic Waves : I. Case of About Ordinary Temperature

Design of ultrasonic distance-measuring system using temperature compensation methods

This document presents the principle of ultrasonic distance measurement is described, the main error sources of ultrasonic distance measurement are analyzed also. A method of improving precision of ultrasonic distance measurement in air, in which the transmission speed of ultrasonic wave if corrected by measured air temperature and the forward edge of receive wave can be determined accurately b...

Temperature Gradients and Materials Properties Measurements using Ultrasonic Guided Waves

A novel technique for the measurement of Elastic Moduli of materials as well as measurement of temperature gradients using ultrasonic waveguides is described here. The range of temperature measurement was from room temperature to maximum utility temperature of waveguides or maximum measurable value of thermocouple temperature, typically beyond 1000°C. In this work, thermocouple wires have been ...

hazard evaluation of gas condensate stabilization and dehydration unit of parsian gas refinery using hazop procedures

شناسایی مخاطرات در واحد 400 پالایشگاه گاز پارسیان. در این پروزه با بکارگیری از تکنیک hazop به شناسا یی مخاطرات ، انحرافات ممکن و در صورت لزوم ارایه راهکارهای مناسب جهت افزایش ایمنی فرا یند پرداخته میگردد. شرایط عملیاتی مخاطره آمیز نظیر فشار و دمای بالا و وجود ترکیبات مختلف سمی و قابل انفجار در واحدهای پالایش گاز، ضرورت توجه به موارد ایمنی در این چنین واحدهایی را مشخص می سازد. مطالعه hazop یک ر...

High temperature ultrasonic transducers: review

The problems of development of high-temperature ultrasonic transducers for modern science and technology applications are analysed. More than 10 piezoelectric materials suitable for operation at high temperatures are overviewed. It is shown that bismuth titanate based piezoelectric elements are most promisable. Bonding methods of piezoelectric elements to a protector and backing are discussed. ...

Ultrasonic Waves on Gas Hydrates Experiments