![]() ![]() ![]() In addition to using special explosion proof enclosures, the circuitry is designed so that the maximum skin temperature of the flow element never nears the ignition temperature of the gas or vapor. Many products carry ratings that Class 1, Div.1, Zone 1 ratings. FCI products carry Ex approval ratings to FM, FMc, CSA, ATEX, IECEx, Inmetro, EAC TR/CU, NEPSI, CCoE and others. Further, FCI approvals are on the full instrument, not just an enclosure rating. These FCI products have been independently tested and certified by these agencies. ![]() Many of FCI products global agency approvals for installation in Ex type environments. This differential is electronically converted into an electrical signal that can be used to trip a relay in a flow, level or interface switch applications, or which can be linearized across a large turndown to provide a wide range air/gas mass flow meter.Ĭan I safely use FCI thermal flow switches and meters in hazardous (explosive) gases ?įCIs Thermal Technology is safe to use near and in flammable and explosive liquids and gases. This differential temperature is greatest at no flow conditions and decreases as flow increases, cooling the heated RTD.Ĭhanges in flow velocity or immersion of the flow element into a liquid directly affect the extent to which heat is dissipated and, in turn the magnitude of the temperature differential between the RTDs. Heat is applied internally to one RTD relative to the other, creating a differential temperature between the two. A typical flow element configuration uses two RTDs, sheathed in thermowells, separated by a gap. Thermal Dispersion technology uses the principle of measuring the heat loss, or cooling effect, of a fluid flowing across a heated cylinder. Product Technology How does FCI thermal dispersion technology work? If you have a new question that is not listed in our archive or you would like to discuss the specific requirements for your application, please contact us at 80 (toll free within USA), or 76 FCI FAQ Library Frequently Asked QuestionsįCI's FAQ Library provides immediate answers to the most frequently asked questions about FCI products, their applications and installations. ![]()
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