HUMIDITY SENSORS FOR SALE

Humidity sensors transform moisture readings into useful data that powers HVAC systems, industrial equipment, and building controls. These devices monitor environmental conditions and can track barometric pressure alongside humidity levels. They protect valuable server equipment in data centers, maintain precise conditions in pharmaceutical production, and help preserve artwork in museums. Their accuracy helps save energy while stopping moisture problems like mold and condensation before they start.

These sensors work hard across many settings — from keeping hospital storage rooms at the right moisture levels to making sure food production stays fresh. Modern systems combine temperature and humidity sensors to help building systems balance comfort with energy use by adjusting air handling based on actual readings. Whether monitoring sensitive electronics or maintaining ideal storage conditions, humidity sensors play a key role in modern building and process control.

HUMIDITY SENSOR COMPONENTS

Modern humidity sensing technology combines sophisticated elements for reliable measurement:

• Capacitive sensors use polymer-based dielectrics that change their electrical properties with humidity
• Resistive elements measure conductivity changes in hygroscopic materials
• Thermal conductivity sensors detect air moisture through heat dissipation differences.

These sensing elements connect to transmitter circuits that process raw signals into standardized outputs, incorporating digital signal processing, temperature compensation, and field-configurable ranges.

HUMIDITY SENSOR TYPES WE OFFER AT BLACKHAWK SUPPLY

Our extensive sensor range encompasses specialized categories designed for precise environmental monitoring across diverse applications. Each type offers unique features optimized for specific installation requirements and control needs.

DUCT HUMIDITY TRANSMITTERS

Engineered for continuous monitoring within air handling systems, duct humidity transmitters deliver reliable measurements in dynamic airflow conditions. Their robust construction and versatile mounting options ensure consistent performance across various duct configurations.

Available Types:

• Combined humidity and temperature transmitters
• Pneumatic humidity controllers (humidistats)
• Duct-mounted temperature/RH sensors
• Outdoor-rated temperature/RH units

Accuracy Options:

• Combined temp/RH sensors (±1% accuracy)
• Combined temp/RH sensors (±1.5% - 2% accuracy)
• Combined temp/RH sensors (±3% - 5% accuracy)
• Standalone humidity sensors (1.5% - 5% accuracy).

Mounting Configurations:

• Duct-mounted designs
• Insertion probe models
• Outdoor air sensors

DUCT HUMIDITY SENSORS

Optimized for building automation systems, these sensors provide streamlined integration and stable long-term measurement within air handling equipment.

Sensor Options:

• Standalone humidity sensors (1% accuracy to 3% accuracy)
• Combined temperature/humidity (2% accuracy to 5% accuracy)
• Condensation monitoring sensors
• Dewpoint measurement capability

Element Types:

• Digital output (mA or VDC)
• Thermistor (10K with 11K Shunt)
• Temperature compensation
• Field-selectable ranges

Mounting Configurations:

• Duct-mounted designs
• Outdoor air installations
• Application-specific housings

Power & Output:

• 24V AC/DC compatibility
• 24V DC options
• Analog voltage output
• Current (mA) output options.

Performance Features:

• High-performance polymer sensing elements
• Fast-response moisture detection
• Drift-resistant designs
• Capacitive sensing technology
• Industrial-grade construction

Additional Capabilities:

• BACnet/Modbus protocols
• LED status indicators
• Optional digital displays
• Field-adjustable parameters
• Real-time monitoring
• Remote calibration options

HUMIDITY TRANSMITTERS

Our most versatile sensor category adapts to diverse mounting locations while maintaining precise measurement capabilities across varying environmental conditions.

Accuracy Options:

• Precision ranges from ±1% RH to ±3% RH
• Advanced calibration stability
• Temperature-compensated measurements
• Rapid response elements

Mounting Configurations:

• Duct-mounted sensors
• Insertion probe designs
• Outdoor air installations
• Pendant-style configurations

Communication Features:

• Multiple output configurations
• Network protocol support
• Digital interface options
• Real-time data reporting

Environmental Protection:

• Solar radiation shields
• Weatherproof enclosures
• Condensation prevention
• Temperature-tolerant designs

LEADING HUMIDITY SENSORS MANUFACTURERS AT BLACKHAWK SUPPLY

Our carefully selected manufacturer lineup represents industry pioneers in environmental sensing technology. Each brand brings specialized expertise and unique solutions addressing diverse application needs across HVAC and building automation.

Siemens Humidity Sensors

Setting global standards in HVAC monitoring through their renowned QFM and AQR series. Siemens sensors integrate advanced digital filtering with BACnet systems, establishing new benchmarks for stability and accuracy. Their humidity sensors and temperature transmitters incorporate industrial-grade construction and sophisticated calibration algorithms, making them the choice for demanding commercial and industrial applications.

One of our best-selling Siemens sensors is the QFM81.2 duct hygrostat. This model features an external setpoint adjustment (30-90% RH range), making it ideal for demanding duct applications. With its reliable mA/VDC output and robust duct-mounted design, the QFM81.2 delivers consistent humidity monitoring and control for commercial HVAC systems. This hygrostat's industrial-grade construction and easy setpoint adjustment have made it a preferred choice among building automation professionals.

ACI Humidity Sensors

Perfecting customized sensing solutions for unique applications. ACI humidity sensors excel with multi-point measurement systems and contamination-resistant designs. Their temperature sensors and duct sensors combine flexible output options with field-replaceable elements, delivering exceptional adaptability for challenging environments.

One of the best-selling humidity control products from ACI that we carry in our store is the HG80 humidistat. This duct-mounted device features an external dial that allows you to easily set the desired humidity level. It has a single-pole, double-throw (SPDT) switch output, making it a versatile option for controlling humidity in HVAC systems.

Dwyer Humidity Sensors

Conquering harsh industrial environments with rugged reliability. Dwyer humidity sensors and transmitters feature chemical-resistant construction and specialized enclosures for extreme conditions. Their industrial sensors and temperature transmitters showcase explosion-proof designs and wide temperature tolerance, making them industrial processing's trusted choice.

One of the best-selling Dwyer humidity sensors we carry at our store is the RHP-2O1B transmitter. This outdoor air (OSA) mounted temperature and humidity transmitter provides a 4-20 mA output for relative humidity and a 10K type II NTC thermistor output for temperature. It boasts an impressive accuracy of ±2% RH and ±0.2°C, making it well-suited for applications like air economizers, pool room humidity monitoring, and outdoor temperature and humidity reference.

Veris Humidity Sensors

Pioneering reliable environmental monitoring through innovative design. Veris humidity sensors blend sophisticated enclosure engineering with advanced polymer-based elements. Their temperature sensors and humidity transmitters deliver consistent monitoring performance with minimal drift, ensuring long-term measurement reliability.

One of our best-selling Veris products is the HP2XVSTA2 pendant-style humidity sensor. This versatile 2% accuracy sensor combines temperature and humidity monitoring in a pendant configuration, ideal for spaces requiring flexible mounting options. With selectable 5/10VDC output and a wide temperature range (32-122°F), this transmitter delivers precise environmental monitoring for applications where traditional wall or duct mounting isn't optimal.

FIND YOUR IDEAL HUMIDITY SENSOR

Browse our extensive humidity sensor collection with free shipping on orders over $999 and 60-day returns. Compare specifications and select the perfect sensor for your application at Blackhawk Supply!