Humidity Sensors

Humidity is the presence of water in air. The amount of water vapour in air can affect human comfort as well as many manufacturing processes in industries. The presence of water vapour also influences various physical, chemical, and biological processes.


Humidity sensors work by detecting changes that alter electrical currents or temperature in the air. There are three basic types of humidity sensors: capacitive, resistive and thermal. All three types will monitor minute changes in the atmosphere in order to calculate the humidity in the air.


A capacitive humidity sensor measures relative humidity by placing a thin strip of metal oxide between two electrodes. The metal oxide’s electrical capacity changes with the atmosphere’s relative humidity. Weather, commercial and industries are the major application areas. Resistive humidity sensors utilize ions in salts to measure the electrical impedance of atoms. As humidity changes, so does the resistance of the electrodes on either side of the salt medium. Two thermal sensors conduct electricity based upon the humidity of the surrounding air. One sensor is encased in dry nitrogen while the other measures ambient air. The difference between the two measures the humidity.


Return to main Sensors page

Videos

HumidIcon? Digital Humidity/Temperature Sensors Applications

Humidity Sensors

Moisture Sensing for Smart Agriculture

Compare Selected Compare Add Selected Add

Contract pricing display is unavailable at the moment. Prices shown are standard retail prices, orders placed will have contract pricing applied when processed.

  Manufacturer Part No Order Code Manufacturer / Description
Availability Price For
Price
Quantity
608-H1
608-H1 - Humidity Meter, 10% to 95% Relative Humidity, 3 %, 0.1 °C, 111 mm, 90 mm, 40 mm

3695797

Humidity Meter, 10% to 95% Relative Humidity, 3 %, 0.1 °C, 111 mm, 90 mm, 40 mm

TESTO

HYGROMETER, 10% TO 95%, 3% ACCURACY; Humidity Range:10% to 95% Relative Humidity; Accuracy %:3%; Resolution (°C):0.1°C; External Height:111mm; External Width:90mm; External Depth:40mm; Product Range:-; Battery Lifetime:8736h; Operating Temperature Max:50

  • 9 available for 1 - 2 day despatch
  • 11 available for 3 - 4 day despatch
+ Check Stock & Lead Times

  • 9 available for 1 - 2 day despatch: (SG stock) Order before 15:00 Mon-Fri (excluding National Holidays)
  • 11 available for 3 - 4 day despatch: (UK stock) Order before 19:35 Mon-Fri (excluding National Holidays)

  • 10 more will be available on 9/10/20
  • 15 more will be available on 9/14/20
  • More stock available week commencing 10/5/20

    Restricted Item
    CY8CKIT-PSOC-024LP
    CY8CKIT-PSOC-024LP - Development Kit, PSoC 1/PSoC 3/PSoC 4/PSoC 5 Family Processor Modules, LCD Display

    2356856

    Development Kit, PSoC 1/PSoC 3/PSoC 4/PSoC 5 Family Processor Modules, LCD Display

    CYPRESS SEMICONDUCTOR

    DEV KIT, PSOC 1, CY8C24X93, ARDUINO; Silicon Manufacturer:Cypress; No. of Bits:8bit; Silicon Family Name:PSOC 1; Core Architecture:M8C; Core Sub-Architecture:M8C; Silicon Core Number:CY8C24093; Kit Contents:Board, QuickStart Guide, Safety Leaflet; Produc

    • 687 available for 3 - 4 day despatch
    + Check Stock & Lead Times

    • 687 available for 3 - 4 day despatch: (UK stock) Order before 19:35 Mon-Fri (excluding National Holidays)

    More stock available week commencing 11/16/20

    Restricted Item
    VLG-MC9S12ZVC
    VLG-MC9S12ZVC - Evaluation Board, S12ZVC Mixed Signal MCU, Open Source BDM, Accelerometer, Pressure Sensor

    2473526

    Evaluation Board, S12ZVC Mixed Signal MCU, Open Source BDM, Accelerometer, Pressure Sensor

    NXP

    EVALUATION BOARD, MIXED SIGNAL MCU; Silicon Manufacturer:NXP; No. of Bits:16bit; Silicon Family Name:S12 MagniV; Core Architecture:S12Z; Core Sub-Architecture:-; Silicon Core Number:MC9S12ZVC; Kit Contents:Eval Board MC9S12ZVC, Getting Started DVD, Quick

    • 3 available for 3 - 4 day despatch
    + Check Stock & Lead Times

    • 3 available for 3 - 4 day despatch: (UK stock) Order before 19:35 Mon-Fri (excluding National Holidays)

    More stock available week commencing 3/1/21

    Restricted Item
    DPP901G000
    DPP901G000 - GROVE BOARD, HUMIDITY/PRESSURE SENSOR

    2726695

    GROVE BOARD, HUMIDITY/PRESSURE SENSOR

    SENSOR SOLUTIONS - TE CONNECTIVITY

    GROVE BOARD, HUMIDITY/PRESSURE SENSOR; Accessory Type:Digital Pressure & Humidity Sensor Board; For Use With:Grove System compatible expansion ports configurable for I2C communication; Product Range:-

    • 73 available for 4 - 5 day despatch
    + Check Stock & Lead Times

    • 73 available for 4 - 5 day despatch: (US stock) Order before 18:00 Mon-Fri (excluding National Holidays)

    More stock available week commencing 10/5/20

    Restricted Item
    HDC1010YPAT .
    HDC1010YPAT . - Humidity Sensor, 0% to 100% RH Range, I2C, Digital, 2.7V to 5.5V, DSBGA-8

    2673331

    Humidity Sensor, 0% to 100% RH Range, I2C, Digital, 2.7V to 5.5V, DSBGA-8

    TEXAS INSTRUMENTS

    HUMIDITY/TEMP SENSOR, DIGITAL, DSBGA-8; Humidity Range:0% to 100% Relative Humidity; Humidity Accuracy:± 2% RH; Temperature Accuracy:± 0.2°C; RH Response Time:15s; Temperature Response Time:-; Sensor Interface Type:I2C; Sensor Output Type:Digital; Sensor

    • 19 available for 1 - 2 day despatch
    + Check Stock & Lead Times

    • 19 available for 1 - 2 day despatch: (SG stock) Order before 15:00 Mon-Fri (excluding National Holidays)
    Re-reel
    Available until stock is exhausted

    Restricted Item
    SLWSTK6101C
    SLWSTK6101C - Wireless Starter Kit, Bluetooth System-In Package Module, For BGM121, BGM123 and BGM111

    2687537

    Wireless Starter Kit, Bluetooth System-In Package Module, For BGM121, BGM123 and BGM111

    SILICON LABS

    EVAL BOARD, BLUETOOTH SYSTEM-INPACKAGE; Silicon Manufacturer:Silicon Laboratories; Silicon Core Number:EFR32, BGM121, BGM111; Kit Application Type:Wireless Development; Application Sub Type:Bluetooth; Kit Contents:Main Board, 2 x Radio Board, Add-on Boar

    No Longer Manufactured

    Restricted Item