6v-24v Diesel Generator Fittings Water Temperature Sensor Model TS-M14

6v-24v Diesel Generator Fittings Water Temperature Sensor Model TS-M14

product presentation:

Temperature sensor is a kind of sensitive element, it directly feel the change of the measured physical quantity and the change of electric quantity; Its function is to convert these changes in physical quantities into their corresponding measurable electrical output. Among them, the water temperature sensor applied to diesel generator, its sensitive element is a negative temperature coefficient thermistor. That is, the higher the water temperature, the smaller the resistance, the larger the voltage signal. The following paper mainly takes the diesel engine water temperature sensor as an example, introduces the classifiCAT-parts-partsion, principle, appliCAT-parts-partsion, connection mode and resistance voltage measurement method of water temperature sensor.

Temperature sensor according to the working principle is divided into wire wound resistance type, thermocouple type, thermistor type, semiconductor type, with thermocouple, thermal resistance used most.

1, wire wound resistance winding resistance temperature sensor is made of high purity nickel wire wound on the insulation winding frame, and then covered with the appropriate coat, used to measure the coolant temperature and intake temperature; Its resistance value changes with the temperature characteristic, its accuracy is within ±1%, the response characteristic is poor, the time constant is about 15s, generally has been abolished.

2, thermocouple Thermocouple will be two kinds of different properties of metal together, when the ambient temperature changes, the potential difference will be generated on the joint surface, this principle can be used to measure the temperature.

3, Thermistor Thermistor uses the property that the resistance of a conductor changes with temperature to measure temperature. Thermistor is a silicon semiconductor with large resistance changes (large temperature coefficient) when the temperature changes. It is composed of 1 metal such as nickel, copper, zinc, magnesium, manganese, etc., mixed with some metal oxides in appropriate proportions and sintered at high temperature. The proportion of metal oxides and sintering temperature can be used to make thermistors for different temperature ranges. In general, work 1 as a temperature range of -20~130℃ semiconductor used as a water temperature sensor; The semiconductor operating temperature range of 600~1000℃ is used as the CAT-parts-partsalyst temperature sensor (such as exhaust temperature sensor). Thermistors can be divided into NTC type, PTC type and CRT type according to the characteristics of resistance value changing with temperature. ① NTC(negative temperature coefficient) type thermistor whose resistance value decreases with the increase of temperature. ② PTC(positive temperature coefficient) thermistor whose resistance value increases with the rise of temperature. ③ CRT(critical temperature coefficient) thermistor whose resistance decreases exponentially with the increase of temperature. Among the above three thermistors, NTC thermistors are widely used in diesel generator sensors. In engineering, thermistor can be made into a variety of different shapes according to the need, its resistance can be measured in the range of several ohms to several megohm 1. NTC thermistor temperature sensor linearity is poor, platinum thermistor sensor can be made by using the characteristics of platinum wire resistance linear change with temperature.

4, semiconductor semiconductor sensor is made of N-type silicon or other types of PN junction made of transistors, diodes and other components, which is characterized by a small volume can withstand the larger working current and higher input/output impedance and anti-pollution ability strong 1 and other advantages.