A polymer ptc temperature sensor

Abstract

The invention belongs to the technical field of sensors, specifically a polymer PTC temperature sensor, including pins, buffer rubber sheets, metal wires, positioning holes, connecting piece 1, connecting sleeves, sensor outer membranes, heat-insulating shells, sealing Connecting tube, thermal copper sheet, temperature sensing probe, connecting ring, connecting piece 2, rubber connecting rod, rubber adhesive sheet and silicone connecting tube. In the present invention, connecting piece 1 and connecting piece 2 are respectively arranged on both sides of the connecting sleeve to ensure that when multiple temperature sensors are used in series, the connecting piece 1 and connecting piece 2 of two adjacent temperature sensors can be connected to realize The distance between two temperature sensors is limited to prevent the multiple sensors from being too close due to long-term equipment vibration, which will affect the temperature detection effect, and it is convenient for the overall series connection and fixed installation of multiple temperature sensors.

Description

technical field [0001] The invention belongs to the technical field of sensors, in particular to a polymer PTC temperature sensor. Background technique [0002] The PTC temperature sensor is actually a thermistor with a positive temperature coefficient. The resistance value changes proportionally with the temperature. The two wires can be connected to the signal input terminal arbitrarily. The thermistor is made of semiconductor materials, and most of them have a negative temperature coefficient, that is, the resistance value. As the temperature increases, it decreases, and the temperature change will cause a large change in resistance value, so it is the most sensitive temperature sensor, but the linearity of the thermistor is extremely poor, and it has a lot to do with the production process, and the manufacturer cannot give a standardization the thermistor curve. [0003] When the existing polymer PTC sensors are used, multiple sensors are generally connected in series t...

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Problems solved by technology

[0002] The PTC temperature sensor is actually a thermistor with a positive temperature coefficient. The resistance value changes proportionally with the temperature. The two wires can be connected to the signal input terminal arbitrarily. The thermistor is made of semiconductor materials, and most of them have a negative temperature coefficient, that is, the resistance value. As the temperature increases, it decreases, and the temperature change will cause a large change in resistance value, so it is the most sensitive temperature sensor, but the linearity of the thermistor is extremely poor, and it has a lot to do with the production process, and the manufacturer cannot give a standardization The thermistor curve of

[0003] When the existing polymer PTC sensors are used, multiple sensors are generally connected in series to monitor an area. Due to the large vibration in the operating environment of some machines or the movement, it is easy to cause the distance between different sensors to be difficult to fix, thus The temperature monitoring effect is affected, and the vibration environment is easy to cause damage to the temperature sensor and affect the service life

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