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Temperture-Humidity

Temperture-Humidity

Temperature sensors are devices used to measure the temperature of a medium. There are 2 kinds on temperature sensors: 1) contact sensors and 2) noncontact sensors. However, the 3 main types are thermometers, resistance temperature detectors, and thermocouples. All three of these sensors measure a physical property (i.e. volume of a liquid, current through a wire), which changes as a function of temperature. In addition to the 3 main types of temperature sensors, there are numerous other temperature sensors available for use.

Contact Sensors

Contact temperature sensors measure the temperature of the object to which the sensor is in contact by assuming or knowing that the two (sensor and the object) are in thermal equilibrium, in other words, there is no heat flow between them.

Examples (below)

  • Thermocouples
  • Resistance Temperature Detectors (RTDs)
  • Full System Thermometers
  • Bimetallic Thermometers

A Humidity Sensor an instrument used for measuring the moisture content in the atmosphere. Humidity measurement instruments usually rely on measurements of some other quantity such as temperature, pressure, mass or a mechanical or electrical change in a substance as moisture is absorbed. By calibration and calculation, these measured quantities can lead to a measurement of humidity. Modern electronic devices use temperature of condensation (the dew point), or changes in electrical capacitance or resistance to measure humidity differences. The first practical hygrometer was invented by polymath Johann Heinrich Lambert in 1755.

 

Model: SEN-012
Features: 1. 4-pin package 2. Ultra-low power 3. No additional components 4. Excellent long-term stability 5. All calibration, digital output 6. Completely interchangeable 7. Long distance signal transmission 8. Relative humidity and temperature measurement Specification: Accuracy: Humidity: + -2..
120.00EGP
Model: MOD-DHT11
DESCRIPTION The DHT11 is a basic, ultra low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). Its fairly simple to use, but requires caref..
60.00EGP
Model: MOD-DHT22
Description: 1.Type:DHT22/AM2302  2.Accuracy resolution:0.1  3.Humidity range:0-100%RH  4.Temperature range:-40~80?  5.Humidity measurement precision:±2%RH  6.Temperature measurement precision:±0.5?  7.4-pin package  8.ultra-low power  9.No addi..
100.00EGP
Model: DS18B20
Description: This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number etched into it - allows for a huge number of sensors to be used on one data bus. This is a..
15.00EGP
Model: DS18B20-WP
Description: This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). Each sensor has a unique 64-Bit Serial number etched into it - allows for a huge number of sensors to be used on one data bus. This is a..
45.00EGP
Model: LM35DZ
Description:  The LM35 series are precision integrated-circuit temperature sensors, with an output voltage linearly proportional to the Centigrade temperature. Thus the LM35 has an advantage over linear temperature sensors calibrated in ° Kelvin, as the user is not required to subtract a l..
18.00EGP
Model: LM35DZ-WP
This sealed analog temperature probe lets you precisely measure temperatures in wet environments. The LM35 are precision integrated-circuit temperature sensors, with an output voltage linearly proportional to the Centigrade temperature. Dimensions: Probe is 6mm in diameter and roughl..
55.00EGP
Model: MOD-MAX6675
Description:MAX6675 is a 12-bit resolution Serial K-type thermocouple converter, produced by American company MAXIM, with merits of cold junction compensation, linearity correction, thermocouple break detection and so on. Based on the principle of the chip, our module is available to measure tempera..
110.00EGP
Model: MOD-054
Description Melexis' MLX90614ESF-AAA is an infrared thermometer designed for non-contact temperature sensing. An internal 17-bit ADC and a powerful DSP contribute to the MLX90614's high accuracy and resolution. It has a huge number of applications including body temperature measurment and m..
210.00EGP
Model: NTC 10K
Description: 10K thermistor with a negative temperature coefficient. Good choice for temp-sensing aplications. Document: Bildr Tutorial..
2.00EGP
Model: NTC 10K W
DESCRIPTION Need to measure something damp? This epoxy-coated precision 1% 10K thermistor is an inexpensive way to measure temperature in weather or liquids. The resistance in 25 °C is 10K (+- 1%). The resistance goes down as it gets warmer and goes up as it gets cooler. For specific tempe..
20.00EGP
Model: NTC 1K
Description: 1K thermistor with a negative temperature coefficient. Good choice for low cost temp-sensing aplications. Document: Bildr Tutorial..
2.00EGP
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