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Expert Thermocouple & RTD &Temperature Sensor Manufacturer.

Exhaust thermocouple sensor used for temperature measurement of modern engines

Exhaust thermocouple sensor is the key element of modern engine management. Measure waste gas temperature can provide important input for system algorithm, in order to improve the efficiency, reduce pollution and prolong engine life.

gas sensor with very high temperature, the gas sensor is usually a thermocouple. Generally can reach 800 ℃ or higher. K type thermocouple is the most common, although J type also appears in the lower engine performance.

the characteristics of effective design of exhaust thermocouple main demand is strong enough to withstand high vibration environment. , it must be small enough so that the rapid response, not disrupt the airflow. Exhaust thermocouple sheath are needed to protect it from the influence of the corrosive products of combustion, and require the vapor seal to prevent leakage.

the probe strong enough usually means using mineral insulated cable to build them. This is a very difficult product. Cable can be directly into the air, or may have a secondary stainless steel sheath, to make it stronger. Mineral insulated cable can be easily bent, so as to adapt to the required length of route.

high temperature combustion products may has corrosive to the temperature sensor sheath. The high chrome steel did a very good job in this environment. It is much better than Inconel etc based on substitute for nickel. Sensor sheath should be made of 446 ss or 310 ss, less than 800 & deg; The application of C can use cheaper sheath.

vibration is usually design considerations. Making thick sheath cross section and try to shorten the insertion length helps to prolong the service life of the probe.

gas seal can be welded to the cases of taper thread, or turned into the manifold of compression fittings.

the past exhaust thermocouple project

Peak Sensors for LGV diesel engines, sports cars, trucks and buses provide custom exhaust temperature sensor. Three chang instrument of thermocouple sensor is used to reduce the large part of the system of vehicle exhaust pollutant, and then they are allowed to enter the low pollution area, for example, the London LEZ - Low temperature area.

the following exhaust thermocouple pictures include some electronic components for signal disposal, with expectations of thermocouple is much higher than usual linear mV of voltage output. The exhaust thermocouple and compression fittings are used together to form a gas seal.

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