Product category:
Materials Testing
News Release from: Land Instruments International | Subject: CDA non-contact thermometer
Edited by the Manufacturingtalk Editorial
Team on 11 November 2005
Testing temperature in waste
incinerators
The new CDA non-contact thermometer from Land Instruments International is a reliable means of determining the temperature of the atmosphere in waste incinerators.
The new CDA non-contact thermometer from Land Instruments International is a reliable means of determining the temperature of the atmosphere in waste incinerators It 'sees through' cold CO2 to measure the hot atmosphere beyond, is insensitive to the presence of gases other than CO2 and relatively insensitive to particulate matter in the atmosphere - characteristics that collectively ensure that it measures the true gas temperature
This article was originally published on Manufacturingtalk on 20 Mar 2007 at 8.00am (UK)
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As a rough guide, good measurements are possible for temperatures above 600C, at CO2 concentrations above 4% and for path lengths of a few metres.
At higher temperatures, lower concentrations and/or shorter paths can be measured.
The overall temperature measurement range is 400 to 1800C / 750 to 3270degF.
The Land CDA can also measure gas or flame temperature in a variety of other plant situations, provided there is a sufficient CO2 concentration at high temperature combined with sufficient path length.
In an incinerator, the CDA can be pictured as an 'invisible thermocouple' extending into the atmosphere above the bed by around 2m/6ft (penetration depth depends on atmosphere conditions).
In reality it is fitted wholly on the outside of the incinerator, usually to a flanged tube that penetrates the wall.
To ensure secure installation and adequate protection at the optimum position on the process, the instrument is compatible with the standard Land mounting accessories.
The protection jacket can be air or water-cooled, and the sighting tube must normally be air-purged.
Ambient temperature limits are 0 to 50C / 32 to 122degF.
A simple 2-wire loop connection outputs a 4 to 20mA signal linear in temperature. Request a free brochure from Land Instruments International ...
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