Humidity Sensors

Industrial environmental sensors and transmitters including humidity sensors, temperature probes, and air quality or environmental monitoring transmitters used for measuring conditions in HVAC systems and industrial environments.

Humidity sensors are used to measure the amount of water vapor present in the air, providing critical data for environmental monitoring and control systems. RSP Supply carries a full line of humidity sensors designed to measure relative humidity and, in some configurations, absolute humidity, temperature, or dew point. These sensors are commonly used in industrial facilities, HVAC systems, cleanrooms, laboratories, storage areas, and agricultural environments where moisture control is essential.

High-performance humidity sensors are engineered for accuracy, stability, and repeatable performance across changing temperature and moisture conditions. By continuously monitoring humidity levels, these sensors enable automated systems to regulate ventilation, cooling, heating, and dehumidification processes. This helps maintain consistent environmental conditions that protect sensitive equipment, preserve product quality, and improve energy efficiency.

Humidity sensors are available using different sensing technologies, including capacitive and resistive designs. Capacitive humidity sensors are widely used due to their broad measurement range and long-term stability, while resistive sensors provide reliable detection through changes in electrical resistance caused by moisture. Selecting the appropriate sensor depends on accuracy requirements, environmental exposure, and application-specific performance needs.

Found 117 items
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ACI 146522 BN2130-R2 - BN2130-R2
Free U.S Ground shipping
$274.86
$229.05
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ACI 151393 Humidistat Duct - CH-VEL-GAUZE
Free U.S Ground shipping
$61.92
$51.60
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Dwyer HHT-EU-LCD Transmitter
Free U.S Ground shipping
$2303.59
$1919.66
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ACI 152898 A/RH2-TTM1K-D-4X-2-5PTNIST Relative Humidity Sensor
Free U.S Ground shipping
$411.77
$343.14
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ACI 152961 A/RH2-AN-R2SO-A03-B4 Relative Humidity Sensor
Free U.S Ground shipping
$258.05
$215.04
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ACI CONFIGNIST67 A/RH2-CP-O-NIST Relative Humidity Sensor
Free U.S Ground shipping
$362.88
$302.40
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ACI 152943 A/RH3-AN-RS-A03-B4 Relative Humidity Sensor
Free U.S Ground shipping
$242.42
$202.02
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ACI 152887 A/RH2-CP-R2S-A02-G5 Relative Humidity Sensor
Free U.S Ground shipping
$95.76
$79.80
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ACI 152875 A/RH3-AN-R2SO-A18-G5 Relative Humidity Sensor
Free U.S Ground shipping
$96.26
$80.22
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Panduit EC001 Three-Temperature and Humidity Sensor
Free U.S Ground shipping
$410.89
$342.41
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Panduit EB001 Temperature and Humidity Sensor
Free U.S Ground shipping
$366.97
$305.81
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Panduit EE001 Spot Type Fluid Leak Sensor
Free U.S Ground shipping
$840.67
$700.56
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Panduit EG001 Rope Fluid Leak Sensor
Free U.S Ground shipping
$511.27
$426.06
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Panduit ED001 Rope Type Fluid Leak Sensor
Free U.S Ground shipping
$942.60
$785.50
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Panduit EA001 Temperature and Humidity Sensor
Free U.S Ground shipping
$188.17
$156.81
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ACI 151591 RH TT Room - A/RH3-TTM100-R2-4
Free U.S Ground shipping
$308.95
$257.46
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ACI 152478 Relative Humidity, RH Outputs: 0-5VDC (Default) - A/RH2-TTM1K-D-4X-1
Free U.S Ground shipping
$391.10
$325.92
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ACI 152305 Relative Humidity, RH Outputs: 0-5 - A/RH1-CP-O-4X-NIST
Free U.S Ground shipping
$477.29
$397.74
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ACI 152376 Relative Humidity, RH Outputs: 0-5 - A/RH2-10K-E1-O-4X
Free U.S Ground shipping
$267.62
$223.02
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ACI 152522 Relative Humidity, RH Outputs: 0-5 - A/RH2-100-2W-R2-NIST
Free U.S Ground shipping
$297.36
$247.80
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ACI 152452 Relative Humidity, RH Outputs: 0-5 - A/RH2-20K-RSO-A03-G5
Free U.S Ground shipping
$258.05
$215.04
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ACI 152395 Relative Humidity, RH Outputs: 0-5 - A/RH3-1K-2W-R-NIST
Free U.S Ground shipping
$238.90
$199.08
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ACI 152500 Relative Humidity, RH Outputs: 0-5 - A/RH3-1K-3W-R2SO-A09-G5
Free U.S Ground shipping
$205.13
$170.94
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ACI 152182 Relative Humidity, RH Outputs: 0-5 - A/RH3-20K-R2O
Free U.S Ground shipping
$204.62
$170.52
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ACI 152385 Relative Humidity, RH Outputs: 0-5 - A/RH3-20K-R2SO-A08-C5
Free U.S Ground shipping
$211.68
$176.40
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ACI 152771 Relative Humidity, RH Outputs: 0-5 - A/RH3-3K-R2SO-A07-C5
Free U.S Ground shipping
$211.68
$176.40
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ACI 152288 Relative Humidity, RH Outputs: 0-5 - A/RH3-AN-R2-NIST
Free U.S Ground shipping
$257.04
$214.20
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ACI 152441 Relative Humidity, RH Outputs: 0-5 - A/RH3-AN-R2SO-A03-C5
Free U.S Ground shipping
$211.68
$176.40
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ACI 152574 Relative Humidity, RH Outputs: 0-5 - A/RH3-CP-RS-A03-B4
Free U.S Ground shipping
$204.62
$170.52
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ACI 152302 Relative Humidity, RH Outputs: 0-5 - A/RH1-1K-2W-D-4X
Free U.S Ground shipping
$461.66
$384.72
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ACI 152257 Relative Humidity, RH Outputs: 0-5 - A/RH1-1K-2W-D-4X-NIST
Free U.S Ground shipping
$516.60
$430.50
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ACI 152422 Relative Humidity, RH Outputs: 0-5 - A/RH2-1K-2W-D-3.25"-EH-NIST
Free U.S Ground shipping
$351.29
$292.74
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Dwyer HHT-IU Intrinsically safe humidity transmitter.
Free U.S Ground shipping
$1643.84
$1369.87
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Dwyer HHT-EU Transmitter
Free U.S Ground shipping
$2161.86
$1801.55
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ACI 146715 TUCH2-CPF11LZYPX-310XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 146882 TUCH2-ANF1XXXXSX-305XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 147112 RH3-1K-NI-SP-010 Wall Plate Humidity
Free U.S Ground shipping
$236.38
$196.98
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ACI 147115 TUCH2-CPF11FZPSX-320XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 147438 TUCH2-16F2XXXXXX-316XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 147661 TUCH2-CPF1XXXXXX-316XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 147743 TUCH2-18F11NC0CX-310XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 147848 TUCH2-ANF11EB0CX-205XXXXXX Humidity
Free U.S Ground shipping
$390.60
$325.50
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ACI 147920 TUCH2-CPF11FZTSX-316XXXXXX Humidity
Free U.S Ground shipping
$352.30
$293.58
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ACI 148030 TUCH2-10F3-1EC0CX210N4C0-XX Humidity
Free U.S Ground shipping
$390.60
$325.50
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ACI 148077 TUCH2-CPF11FG0XX-216XXXXXX Humidity
Free U.S Ground shipping
$390.60
$325.50
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ACI 148078 TUCH2-CPF11FB0XX-205XXXXXX Humidity
Free U.S Ground shipping
$390.60
$325.50
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ACI 148230 A/RH2-TTM100-R-4 Room Humidity
Free U.S Ground shipping
$367.92
$306.60
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ACI CONFIGNIST127 A/RH2-0.1CP-O-NIST Outside Air Humidity
Free U.S Ground shipping
$520.13
$433.44

More Information about Humidity Sensors

In high-performance applications, humidity sensors are calibrated for accuracy and stability, which allows them to perform consistently in warm and wet-to-dry environments. These devices are used to monitor humidity levels in cleanrooms, storage facilities, greenhouses, and laboratories. By enabling systems to automatically adjust ventilation, air conditioning, or dehumidification functions, these same sensors contribute to better comfort, product quality, and energy efficiency. The ability to continuously measure the water vapor content in these dynamic environments gives the sensors an important role in maintaining the balance of temperature and humidity.

FAQs

Q: What is a humidity sensor, and what does it measure?
A humidity sensor measures the amount of moisture in the air, typically reported as relative humidity (RH). Some sensors also measure temperature or dew point to support environmental control systems.

Q: What are humidity sensors commonly used for?
Humidity sensors are used in HVAC systems, building automation, manufacturing, cleanrooms, data centers, agriculture, pharmaceuticals, food storage, and other environments where moisture control affects performance or safety.

Q: What types of humidity sensors are available?
Common humidity sensor types include capacitive, resistive, and thermal conductivity-based sensors. Capacitive sensors are the most widely used due to their accuracy and stability.

Q: How accurate are humidity sensors?
Humidity sensor accuracy typically ranges from ±1% to ±5% RH, depending on sensor quality, design, and operating conditions.

Q: Do humidity sensors require calibration and maintenance?
Yes, periodic calibration and inspection are recommended to maintain accuracy and detect sensor drift or contamination over time.

Why Buy Humidity Sensors from RSP Supply

RSP Supply offers a reliable selection of humidity sensors designed for precise environmental monitoring in industrial and commercial applications. Our products support accurate humidity measurement, system efficiency, and long-term reliability. Customers rely on RSP Supply for technically sound sensor solutions, knowledgeable support, and dependable sourcing for environmental control components