O que são termistores NTC e PTC?
NTC e PTC são ambos termistores, que são resistores especiais que podem alterar a resistência com a temperatura. Eles também podem ser considerados uma espécie de sensor.
P: Você pode explicar a resolução de sensibilidade com mais detalhes? Por que valores mais altos são melhores?
UM: A alta sensibilidade elimina qualquer resistência do chumbo. Também simplifica a eletrônica de suporte. UM 10,000 ohm termistor altera a resistência em 4.4% ou 440 ohms para uma mudança de 1°C na temperatura. UM 100 ohm sensor de platina altera a resistência em 1/3 ohm para uma mudança de 1°C na temperatura.
Comparação entre a sonda do sensor de temperatura PT100 e o módulo DS18B20
1) Princípio básico de aquisição de sinal
① A resistência do PT100 muda proporcionalmente com a temperatura (quanto maior a temperatura, quanto maior a resistência), mas a mudança de resistência é muito pequena, sobre 0.385 Oh / grau;
NTC temperature sensor is a thermistor sensor (faixa de temperatura de medição: -30°C to +200°C (-22°F to +392°F) waterproof probe). Its resistance value changes with temperature. NTC (Negative Temperature Coefficient) means that its resistance value is negatively correlated with temperature, that is, as the temperature rises, the resistance value will decrease; conversely, as the temperature decreases, the resistance value will increase. This characteristic makes NTC temperature sensor very suitable for measuring temperature.
In modern sensing technology applications, (NTC, PTC, PT100, termopar, thermal resistor, DS18B20, etc.. cable, probe kit) temperature sensors are key measuring tools. They are widely used in industrial automation, agricultural monitoring, automobile manufacturing and other fields. In order to ensure that the temperature sensor can work stably and reliably in a humid or wet environment, waterproof and moisture-proof technology
The core technologies of sensor probes and temperature measurement cable kits involve temperature sensing, signal transmission and data processing. Temperature acquisition expert YAXUN uses high-precision Shibaura NTC thermistors for sensor temperature sensing harnesses, including sensing materials, signal processing technology, integrated design and future development trends.
NTC Thermistor Temp Sensors. -13℉-257℉ Quick Response High Sensitivity Temperature Sensor Probe For Home Appliances 5K B3470 5K 3470K 5K B3950 5K 3950K 10K B3435 10K 3435K 10K B3950 10K 3950K 15K B3950 15K 3950K 20K B3950 20K 3950K 50K B3950 50K 3950K 100K B3950 100K 3950K
25952893 for GM Chevrolet GMC temperature sensor 15-51264 1551264;
27722-AL500 for Nissan outdoor temperature sensor ambient temperature 27722-3VA0A;
27723-4BU0A for Nissan Qashqai temperature sensor 277234BU0A;
27675-1KM1A for Nissan air conditioning temperature sensor thermostat 27675-1FC1A 92200-1FA;
1347010 20927970 for Volvo truck/bus/engineering machinery air temperature sensor;
Installed in the charging pile/charging gun of new energy vehicles, used for charging temperature control of new energy vehicles
Fast response speed
Various installation structures available
Strong moisture resistance and high stability
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