Temperature Sensors & Humidity Sensors

Temperature sensors are components that directly translate physical temperature into digital information. Likewise, humidity sensors are able to measure atmospheric moisture levels and translate that into digital information. As such, temperature and humidity sensors are essential for environmental monitoring in and around sensitive electronic equipment.

These capabilities make temperature and humidity sensors suitable for a number of applications, such as to maintain environmental conditions in laboratory test and measurement. They might also be used to trigger a shut-down of equipment that might be compromised by over-heat, or moisture exposure such as condensation.

The RS components range offers temperature sensors and humidity sensors from trusted brands, suitable for a variety of applications and calibrations.

Types of Temperature Sensor

• Thermostats and thermocouples are temperature sensors which measure heat generation via voltage output. They are typically robust and inexpensive, and can be used over a wide range of temperatures.

• PT100 sensors measure the resistance deviation of the medium to determine its temperature, and are sometimes called resistance temperature detectors, or RTDs. These sensors are known for their high accuracy and reliability.

• Infrared temperature sensors and thermographic cameras convert thermal radiation to an electrical signal to monitor temperature levels. These are ideal for circumstances where contact sensors cannot be used.

Types of Humidity Sensor

• Capacitive humidity sensors use humidity-dependent condensers to determine moisture output. These sensors are often used to measure relative humidity in air conditioning units and HVAC systems.

• Resistive humidity sensors measure the electrical variation in conductive polymers and treated substrates. Low cost and small of size, these sensors are used in a variety of applications and appliances.

• Thermal conductor humidity sensors calibrate the deviation between the thermal conductivity of dry air versus moist air. Due to their long-term durability and high temperature resistance, these sensors are often used in clothes dryers and ovens.

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Description Price Sensor Function Output Type Interface Type Accuracy Mounting Type Pin Count Minimum Operating Temperature Operating Temperature Range Maximum Operating Temperature Minimum Operating Supply Voltage Maximum Operating Supply Voltage Package Type Length Height
RS Stock No. 540-2805
Mfr. Part No.DS18B20+
£2.45
Each
Units
Temperature Digital 1-Wire ±0.5°C Through Hole 3 -55 °C -55 → +125 °C +125 °C 3 V 5.5 V TO-92 4.95mm 4.95mm
RS Stock No. 786-5554
Mfr. Part No.SHT21
BrandSensirion
£5.20
Each
Units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.1 V 3.6 V DFN 3mm 1.1mm
RS Stock No. 169-1857
Mfr. Part No.SHT21
BrandSensirion
£3.254
Each (On a Reel of 400)
Units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 6 -40 °C -40 → +125 °C +125 °C 2.1 V 3.6 V DFN 3mm 1.1mm
RS Stock No. 169-1860
Mfr. Part No.SHT31-DIS-B
BrandSensirion
£2.293
Each (On a Reel of 2500)
Units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 876-5061
Mfr. Part No.SHT31-DIS-B
BrandSensirion
£4.57
Each
Units
Temperature & Humidity Digital Serial-I2C ±0.3 °C, ±2 %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 528-3171
Mfr. Part No.HIH-4000-001
BrandHoneywell
£16.44
Each
Units
Humidity Sensor Analogue Analogue ±3.5% Through Hole 3 -40 °C -40 → +85 °C +85 °C 4 V dc 5.8 V dc SIP 21.66mm 2.03mm
RS Stock No. 177-5953
Mfr. Part No.HIH-4000-001
BrandHoneywell
£11.78
Each (In a Tube of 50)
Units
- - - - - - - - - - - - - -
RS Stock No. 533-5878
Mfr. Part No.LM35CAZ/NOPB
£5.58
Each
Units
Temperature Voltage Analogue ±0.2°C Through Hole 3 -40 °C -40 → +110 °C +110 °C 4 V 30 V TO-92 5.2mm 5.2mm
RS Stock No. 121-8696
Mfr. Part No.LM35CAZ/NOPB
£2.406
Each (In a Box of 1800)
Units
Temperature Voltage Analogue ±0.2°C Through Hole 3 -40 °C -40 → +110 °C +110 °C 4 V 30 V TO-92 5.2mm 5.2mm
RS Stock No. 170-4381
Mfr. Part No.HPP809A031
£53.728
Each (In a Box of 100)
Units
Temperature & Humidity Voltage Analogue ±5%RH Through Hole - -40 °C -40 → +85 °C +85 °C 4.75 V dc 5.25 V dc - 11.6mm 76.3mm
RS Stock No. 893-7373
Mfr. Part No.HPP809A031
£58.49
Each
Units
Temperature & Humidity Voltage Analogue ±5%RH Through Hole - -40 °C -40 → +85 °C +85 °C 4.75 V dc 5.25 V dc - 11.6mm 76.3mm
RS Stock No. 876-5067
Mfr. Part No.SHT31-ARP-B
BrandSensirion
£4.57
Each
Units
Temperature & Humidity Voltage Analogue ±0.3 °C, ±2 %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 169-1862
Mfr. Part No.SHT31-ARP-B
BrandSensirion
£2.293
Each (On a Reel of 2500)
Units
Temperature & Humidity Voltage Analogue ±0.3 °C, ±2 %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 912-8794
Mfr. Part No.TMP36GT9Z
£0.823
Each (In a Bag of 100)
Units
Temperature Emitter Follower Voltage ±3°C Through Hole 3 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V TO-92 5.21mm 5.33mm
RS Stock No. 427-351
Mfr. Part No.TMP36GT9Z
£1.128
Each (In a Pack of 5)
Units
Temperature Emitter Follower Voltage ±3°C Through Hole 3 -40 °C -40 → +125 °C +125 °C 2.7 V 5.5 V TO-92 5.21mm 5.33mm
RS Stock No. 123-7352
Mfr. Part No.SHT35-DIS-B
BrandSensirion
£7.59
Each
Units
Temperature & Humidity Digital Serial-I2C ±0.2 (Temperature) °C, ±1.5 (Humidity) %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 169-1840
Mfr. Part No.SHT35-DIS-B
BrandSensirion
£4.373
Each (On a Reel of 2500)
Units
Temperature & Humidity Digital Serial-I2C ±0.2 (Temperature) °C, ±1.5 (Humidity) %RH Surface Mount 8 -40 °C -40 → +125 °C +125 °C 2.4 V 5.5 V DFN 2.6mm 1mm
RS Stock No. 893-7082
Mfr. Part No.HPP801A031
£4.89
Each
Units
Humidity Sensor Analogue Analogue ±2% Through Hole 2 -60 °C -60 → +140 °C +140 °C - 10 V ac - 10.2mm 6.2mm
RS Stock No. 170-4357
Mfr. Part No.HPP801A031
£3,100.78
Each (In a Box of 1200)
Units
Humidity Sensor Analogue Analogue ±2% Through Hole 2 -60 °C -60 → +140 °C +140 °C - 10 V ac - 10.2mm 6.2mm
RS Stock No. 781-1365
Mfr. Part No.HIH-6120-021-001
BrandHoneywell
£5.29
Each
Units
Temperature & Humidity Digital Serial-I2C ±4%RH Through Hole 4 -25 °C -25 → +85 °C +85 °C 2.3 V 5.5 V SIP 4.9mm 3.9mm
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