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Exhaust Gas Temperature (EGT) Sensors monitor the temperature of the exhaust gas, ensuring that exhaust gas cleaning components achieve optimal conversion rates. NGK has been developing EGT sensors for OE and the Aftermarket for many years.
Temperature sensors use resistors whose resistance changes with temperature. Two di?erent types of sensors are common: PTC and NTC. While with PTC (Positive Temperature Coe?cient) resistance increases with rising temperature, with NTC (Negative Temperature Coe?cient) resistance decreases with rising temperature. All NTK sensors are NTC types. NTC sensors are more accurate in measuring than PTC sensors; but as NTC sensors used to be sensitive on high temperatures, mostly PTC were used to measure exhaust gas temperature. NTK EGT Sensors use temperature resistant elements that cover a range from -40°C up to +900°C.
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