High performance Ash Fusion temperature measurement

Author

Malani, Arpit ; Nyandoro, O.T. ; Chingozha, T.

Author_Institution

Sch. of Electr. & Inf. Eng., Univ. of the Witwatersrand, Johannesburg, South Africa

fYear

2013

fDate

19-21 June 2013

Firstpage

1364

Lastpage

1369

Abstract

Ash Fusion temperature measurement of a gasifier in a CTL plant is necessary to determine the extent of ash clinkering inside the gasifier, and ultimately to avoid unstable gasifier operation and pressure drop related problems. A suitable smart instrumentation measurement system with a minimum bandwidth of 1 kHz is proposed, which comprises of an R type thin film thermocouple sensor for temperature detection with the aid of an Resistance-to-Temperature Device, a capacitive pressure sensor for interference detection, amplifiers and filters for signal conditioning, a microcontroller for data processing and a USB device for data logging. Analysis of static and dynamic characteristics of the system limits aliasing error to 1% and determines the system error as 1.75% and the system bandwidth as 1MHz.

Keywords

amplifiers; ash; capacitive sensors; data loggers; electric resistance measurement; filters; intelligent sensors; interference (signal); microcontrollers; peripheral interfaces; pressure measurement; pressure sensors; signal conditioning circuits; temperature measurement; temperature sensors; thermocouples; thin film sensors; CTL plant; R type thin film thermocouple sensor; USB device; amplifier; ash clinkering; ash fusion temperature measurement; bandwidth 1 MHz; bandwidth 1 kHz; capacitive pressure sensor; data logging; data processing; dynamic analysis; filter; interference detection; microcontroller; pressure drop; resistance-to-temperature device; signal conditioning; smart instrumentation measurement system; static analysis; temperature detection; unstable gasifier operation; Active filters; Ash; Junctions; Microcontrollers; Temperature distribution; Temperature measurement; Temperature sensors; anti-aliasing; ash fusion temperature; electronic measurement; measurement application; mechatronic design; signal conditioning; signal processing; thin film thermocouple;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2013 8th IEEE Conference on

Conference_Location

Melbourne, VIC

Print_ISBN

978-1-4673-6320-4

Type

conf

DOI

10.1109/ICIEA.2013.6566579

Filename

6566579