Gas and Chemical Sensors / Detectors
Monitoring Combustible Gases in Kilns
Control Instruments has a innovative "Monitoring Combustible Gases in Kilns," that discusses the hurdles involved with monitoring combustible gas concentrations for safety and key points to consider.
Heating all sample-wetted parts of the analyzer and sampling system to 250°C will prevent condensation. The sample stays intact. The measurement includes all combustible vapors. Sample pumps cannot provide the same level of reliability as an aspirated sampling system and should be avoided.
A flame-based detector has the best chance to measure the wide range of combustible vapors that might be present. A flame temperature type will include the widest possible range of combustible gases and vapors, including non-hydrocarbons such as hydrogen and carbon monoxide. Flammability data for organic binders may be difficult to obtain. A rough estimate for the Lower Flammable Limit in air is 50% of stoichiometric. Another useful rough estimate is one pound of binder per 340 standard cubic feet of air (50 grams per normal cubic meter).
Near the Flash Point, the vapor pressure tends to double for every 10°C rise in temperature. Small changes in temperature can have a large effect. Cooling the sample a bit can condense out half the combustibles.
http://www.controlinstruments.com/sites/default/files/attachedpdf/MonitoringCombustibleGasesinKilns.pdf
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Control Instruments Corp.
25 Law Drive
Fairfield, NJ 07004
1-973-575-9114
www.controlinstruments.com
Press Release
Control Instruments Corp.
25 Law Drive
Fairfield, NJ 07004
1-973-575-9114
www.controlinstruments.com
