Honeywell Sensor and Switch Solutions for HVAC

Product Lines for HVAC Applications

The following chart details various Honeywell product lines applicable to HVAC systems:

✔ Primary sensor/switch used within application (key design consideration for OEM)

✔ Secondary sensor/switch used within application (not a key design consideration)

Demand Control Ventilation

An efficient ventilation system responds to real-time data to optimize air recirculation, improving air quality and reducing HVAC running costs. Demand control ventilators meet the growing trend for environmentally friendly buildings with better indoor air quality.

• Measures differential pressure for static duct pressure and indoor air quality.
• Adjusts ventilation rates as the sensor is highly sensitive to carbon dioxide in the air.
• Senses CO₂ in demand control & energy recovery ventilation.

Carbon Monoxide (CO) Sensor:

• High-quality CO detection in residential or commercial environments.
• Helps control indoor air quality.

Motor Control:

• Enables efficient control of electric motors driving fans, blowers, and pumps.

Temperature Control & Thermostats:

• Used in HVAC temperature controllers and for thermostat control.

Basic Switch:

• Provides high-performance mechanical switching on direct-acting damper actuators.
• Activates or deactivates an element or the entire ventilation system.

Variable Air Volume (VAV) Control

Sensors are critical for identifying system functionality and optimal performance. They enable monitor valves to control air volume, maximizing energy efficiency.

Airflow Sensor:

• Monitors and controls variable airflow within ducting.
• Ensures proper airflow to prevent hot and cold spots within buildings.

Temperature Sensor:

• Used in HVAC temperature controllers and for thermostat control.

Airflow Sensor (VAV):

• Monitors mass airflow for VAV controllers and in-line transmitters.
• Balances airflow in complex HVAC systems.

Air Purification & Filter Monitoring

Recent trends emphasize cleaner and healthier air, increasing the need for air purification and filter monitoring.

Board Mount Pressure Sensors:

• Monitors differential pressure for clogged filter detection, improving air quality and reducing power consumption.

Basic Switch:

• Used as air-proving switching assemblies, along with mechanical switching for valve position detection.

Temperature Sensor:

• Used in HVAC temperature controllers and for thermostat control.

Airflow Sensor:

• Monitors mass airflow for VAV controllers and in-line transmitters.

Magnetic Sensor IC:

• Provides motor and fan control, position sensing, and speed sensing for moving parts.

Air Conditioning

Air conditioning systems, whether centralized or standalone, distribute cooled and filtered air. Honeywell sensors and switches enhance system efficiency and reduce power consumption.

Heavy-Duty Pressure Transducer:

• Monitors air conditioning compressor output and input pressure to enhance system efficiency and reduce power consumption.

Board Mount Pressure Sensor:

• Monitors differential pressure for clogged filter detection to improve air quality.

Temperature Sensor:

• Used in HVAC temperature controllers and for thermostat control.

Motor Control:

• Enables efficient control of electric motors driving fans, blowers, and pumps.

Heating System: Commercial

Commercial boilers heat water and air using combustion, distributing it throughout buildings. Energy efficiency and safety are paramount. Honeywell sensors contribute to efficiency and fault detection.

Heavy-Duty Pressure Transducer:

• Monitors boiler water/steam output and input pressure to enhance system efficiency and reduce power consumption.

Airflow Sensor:

• Monitors mass airflow for VAV controllers and in-line transmitters.
• Monitors the flow of warm air or water within the heating system to enhance system efficiency.

Motor Control:

• Enables efficient control of electric motors driving fans, blowers, and pumps.

Carbon Monoxide (CO) Sensor:

• Measures CO levels, which can be produced during incomplete combustion and pose a risk.

Limit Switch:

• Placed on gas pilots to shut off gas flow if the pilot goes out.
• Activates or deactivates an element or the entire ventilation system.
• Monitors steam pressure (overpressure or low pressure indication) in boilers to prevent potentially explosive situations.
• Acts as air-proving switching assemblies or as a float switch for indicating pipe flow backup.
• Monitors the position of a damper or valve; when fully open, it starts the program sequence.

Heating System: Residential

Residential heating systems efficiently provide heat. Honeywell sensors enhance efficiency and detect faults and leaks.

Board Mount Pressure Sensors:

• Control the flow of warm air or water within the building and detect leaks.

Carbon Monoxide (CO) Sensor:

• Detects incomplete combustion, which can produce odorless, colorless carbon monoxide gas.

Temperature Sensor:

• Used in smart thermostats to efficiently manage the HVAC system and improve occupant comfort.

Motor Control:

• Enables efficient control of electric motors driving fans, blowers, and pumps.

Basic Switch:

• Activates or deactivates an element or the entire ventilation system.

Refrigeration

Refrigeration systems lower and maintain temperatures. Honeywell sensors and switches are designed for durability and stable performance with new refrigerants.

Heavy-Duty Pressure Transducer:

• Monitors refrigeration compressor output and input pressure to enhance system efficiency and reduce power consumption.

Basic Switch:

• Provides presence detection, on/off function, function monitoring, and end-of-travel in Zone 2 hazardous locations.

Temperature Sensor:

• Used in temperature controllers and for compressor temperature monitoring in refrigeration.

Motor Control:

• Enables efficient control of electric motors driving fans, blowers, and pumps.

Limit Switch:

• Activates or deactivates an element or the entire system.
• Monitors overpressure or low pressure indication to prevent potentially explosive situations.

Pressure Sensors and Transducers

Board Mount Pressure Sensors, Basic ABP/ABP2 Series

• Pressure range: 1 inH₂O to 175 psi
• High accuracy, TEB: 1.5% FSS
• Temperature compensated: -40°C to 110°C
• Temperature operating: -40°C to 110°C
• Extensive media compatibility
• Analog & digital (FC/SPI)
• Best for configurability & value

Board Mount Pressure Sensors, TruStability™ RSC, HSC and SSC Series

• Pressure range: 0.5 inH₂O to 150 psi
• High accuracy, TEB: 1.0% FSS
• Temperature compensated: -40°C to 85°C
• Temperature operating: -40°C to 85°C
• Outstanding EMI/EMC performance
• Analog & digital (FC/SPI)
• Best for accuracy, stability & performance

Heavy Duty Pressure Transducers, MIP Series

• Pressure range: 15 psi to 900 psi
• High accuracy, TEB: 0.75% FSS
• Temperature operating: -40°C to 125°C
• Compatible with a wide range of fluids and gases
• Rugged stainless steel 304L construction
• Outstanding EMI/EMC performance
• Best for accuracy, stability & performance

Hall-Effect and Magnetoresistive Sensor ICs

Linear Hall-Effect Sensor ICs, SS490 Series

• Small size with low power consumption
• Single current sinking or current sourcing linear output
• Built-in laser trimmed thin-film resistors allow sensitivity and temperature compensation
• Responds to either positive or negative gauss
• Quad Hall sensing element for stable output

Magnetoresistive Sensor ICs

• Nanopower Series: SM351LT/SM353LT (SOT-23 package)
• Standard Power Series: SM351RT/SM451R/SM353RT/SM453R (SOT-23 or TO-92-style package)
• Sensitivity: 7 G typ., 11 G max. (SM351LT/SM351RT/SM451R); 14 G typ., 20 G max. (SM353LT/SM353RT/SM453R)
• Omnipolar sensing activates with either pole from a magnet

High Sensitivity Latching Hall Sensors

• SS360ST/NT/PT and SS460S for BLDC commutation
• Fastest response time in its class
• No chopper stabilization
• High sensitivity; operates from only 30 gauss typ.
• Bipolar latching magnetics
• Can be supplied on tape-and-reel

Temperature Sensors

Thermistors, 192/194 Series

• High quality, low-cost, resistance temperature-matched interchangeable units
• Dissipation constant in still air: 0.75 mW/°C
• Time constant in air: 15.0 s
• Maximum diameter: 2.413 mm (0.095 in)
• Resistance temperature curve, interchangeability, enhanced stability and life, epoxy coated

Gas Sensors

Carbon Dioxide Gas Sensor, CRIR-M1 Series

• Single channel, non-dispersive infrared (NDIR) sensor for detecting Carbon Dioxide
• Small size
• Maintenance-free for normal indoor applications
• Enhanced long-term stability
• Higher accuracy: ±40 ppm ±3% of reading
• Consistency and repeatability
• Auto baseline correction (ABC)

Carbon Monoxide Gas Sensor, ECOSURE X

• Cost-effective two-electrode electrochemical cell for detecting carbon monoxide in domestic/residential CO detection, industrial fire detection, and ventilation control.
• Unique design for use in extreme environments.
• Suitable for use in BS, EN, UL, LPC, VDS, and TÜV accredited products.
• Features an integrated active filter to eliminate false alarms caused by common household vapors.

Airflow Sensors

AWM3300 Series

• Small size
• Amplified signal conditioning
• 30 SCCM to 5 mBar
• Analog output
• 50 mW typ. power consumption
• -25°C to 85°C (-13°F to 185°F) range

Micro Switch Basic Switches

MICRO SWITCH Basic Switches, IBZ and WA Series; DT Series

• Accepted world-wide standard "Large Basic" switch
• Low operating force and differential travel
• Long mechanical life up to 20,000,000 cycles at 95% survival
• Current rating ranges from 15 A to 25 A
• Choice of actuation, termination, and operating characteristics
• Two independent single-pole double-throw circuits in one housing and actuator (DT)

MICRO SWITCH V-Basic Miniature Switches, V19 Series

• RoHS/REACH/Cal Prop65 compliant
• UL/CSA, cUL, ENEC, CQC certifications enable global design acceptance and cost savings in agency approvals
• 5 A, 16 A: electrical ratings for design flexibility in one industry-standard package
• >1M mechanical operations

MICRO SWITCH V-Basic Miniature Switches, V15 Series

• Designed from 10K to 50K operations at a full load or 5M for mechanical life
• World-wide package size acceptance
• Current rating ranges of 10 A and 26 A
• UL/CSA, cUL, UKCA, ENEC, and CQC approvals

MICRO SWITCH Explosion-Proof Basic Switches, V15W2 Series

• Approved for use in Zone 2 hazardous locations
• IP67 equivalent
• UL, cUL, UKCA, ENEC, CQC, ATEX, IEC Ex approvals
• 5 A electrical rating
• Longer service life: over one million mechanical operations

MICRO SWITCH Subminiature Switches, ZM/ZW/ZX Series

• Best suited for lower cost-of-failure applications
• Small, lightweight, low cost, enhanced life, ample electrical capability
• Choice of low energy or power-duty electrical ratings (gold-plated or silver contacts)
• Choice of ratings, actuation, termination, and operating characteristics
• UL/CSA, cUL, ENEC, and CE approvals

Micro Switch Toggle Switches

MICRO SWITCH Toggle Switches, NT Series

• ISA 12.12.01 certified; designed for use near flammable hydrocarbon refrigerants
• Quick-connect spade terminals
• UL191 electrical rating
• Sealed to NEMA 3, 3R, 4, 13, and IP67
• Operating temperature range: -40°C to 71°C [-40°F to 160°F]

Micro Switch Pushbutton Switches

Operator Interface Switches and Indicators, AML Series

• Pushbuttons, paddles, rockers, key-actuated, and indicators within AML Series for coordinated panel appearance
• Less than 1.75 inch panel depth
• Two or three positions and maintained or momentary action
• One-, two-, or four-poles with double throw available for most switches

Pressure Switches

Extended Duty Pressure Switches, 5000 Series

• Specifically designed to stand up to extended duty applications
• Factory set but capable of field adjustment
• Direct action blade contact
• Burst pressure: 750 psi for 0.5 psi to 24 psi set point range; 1250 psi for 25 psi to 150 psi set point range

Warranty and Remedy

Honeywell warrants its manufactured goods to be free from defective materials and faulty workmanship. Honeywell's standard product warranty applies unless otherwise agreed in writing. For specific warranty details, refer to your order acknowledgment or consult your local sales office. If warranted goods are returned to Honeywell during the coverage period, Honeywell will, at its option, repair or replace, without charge, those items found defective by Honeywell in its sole discretion. The foregoing is the buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. Honeywell shall not be liable for consequential, special, or indirect damages.

While Honeywell may provide information or engineering support through its personnel, literature, and website, it is the buyer's sole responsibility to determine the suitability of Honeywell product(s) for the buyer's requirements. Specifications are subject to change without notice. The information supplied is believed to be accurate and reliable, but Honeywell assumes no responsibility for its use.

For More Information

Honeywell Sensing Solutions serves customers through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing, or the nearest Authorized Distributor, visit automation.honeywell.com/hss or contact:

Honeywell Sensing Solutions
830 East Arapaho Road
Richardson, TX 75081
www.honeywell.com

Document Number: 009636-3-EN | Revision: 3 | Date: 07/25

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