Honeywell Sensor and Switch Solutions for HVAC Applications

Overview

Honeywell offers a comprehensive range of product lines to support various HVAC applications. These solutions are designed to enhance system efficiency, improve air quality, and ensure reliable operation. The following chart details product categories and their applicability across different HVAC functions.

✓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 support the growing trend for environmentally friendly buildings with better indoor air quality.

• Board-Mount Pressure Sensors: Measure differential pressure for static duct pressure and indoor air quality.
• CO₂ Sensors: Adjust ventilation rates based on carbon dioxide levels, essential for demand control and energy recovery ventilation.
• CO Sensors: Provide high-quality CO detection in residential or commercial environments to help control indoor air quality.
• Electric Motor Control: Enable efficient control of electric motors for fans, blowers, and pumps.
• Temperature Control & Thermostats: Used in HVAC temperature controllers and for thermostat control.
• Basic Switches: Provide high-performance mechanical switching on direct-acting damper actuators.
• Limit Switches: Activate or deactivate an element or the entire ventilation system.

Variable Air Volume (VAV) Control

Controls airflow into a room or duct. Sensors enable monitor valves to control air volume, maximizing energy efficiency. Sensors are critical for ensuring the system operates as intended and at its best.

• Board-Mount Pressure Sensors: Monitor and control variable airflow within ducting, ensuring proper air distribution to prevent hot and cold spots.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Airflow Sensors: Monitor mass airflow for VAV controllers and in-line transmitters, balancing 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. Honeywell sensors support these critical functions.

• Board-Mount Pressure Sensors: Monitor differential pressure for clogged filter detection, improving air quality and reducing power consumption.
• Basic Switches: Used as air-proving switching assemblies and for mechanical switching for valve position detection.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Airflow Sensors: Monitor mass airflow for VAV controllers and in-line transmitters.
• Magnetic Sensor ICs: Provide motor and fan control, position sensing, and speed sensing for moving parts.

Air Conditioning

Air conditioning systems, whether centralized or standalone, require precise control and monitoring for efficiency and comfort. Honeywell sensors and switches are integral to these systems.

• Heavy-Duty Pressure Transducers: Monitor air conditioning compressor output and input pressure to enhance system efficiency and reduce power consumption.
• Board-Mount Pressure Sensors: Monitor differential pressure for clogged filter detection to improve air quality.
• Thermal Sensors: Used in HVAC temperature controllers and for thermostat control.
• Electric Motor Control: Enable efficient control of electric motors driving fans, blowers, and pumps.

Heating Systems: Commercial

Commercial boilers utilize combustion to heat water and air, distributed throughout buildings for warmth. Energy efficiency and safety are paramount. Honeywell sensors contribute to efficiency and fault detection.

• Heavy-Duty Pressure Transducers: Monitor boiler water/steam output and input pressure to enhance system efficiency and reduce power consumption.
• Airflow Sensors: Monitor the flow of warm air or water within the heating system to enhance efficiency.
• Electric Motor Control: Enable efficient control of electric motors for fans, blowers, and pumps.
• CO Sensors: Measure CO levels, critical for safety as incomplete combustion can produce hazardous CO gas.
• Gas Pilot Controls: Placed on gas pilots to shut off gas flow if the pilot extinguishes.
• Limit Switches: Activate or deactivate elements or the entire ventilation system.
• Pressure Switches: Monitor steam pressure (overpressure or low pressure) in boilers to prevent explosive situations.
• Float Switches: Act as air-proving switching assemblies or float switches for indicating pipe flow backup.
• Limit Switches: Monitor damper or valve position; when fully open, they initiate program sequences.

Heating Systems: Residential

Residential heating systems efficiently distribute heat via air or water. Energy efficiency, reliability, and safety are key. Honeywell sensors enhance efficiency and detect faults.

• Board-Mount Pressure Sensors: Control the flow of warm air or water and detect leaks.
• CO Sensors: Detect incomplete combustion, a source of dangerous carbon monoxide gas.
• Temperature Sensors: Used in smart thermostats for efficient HVAC management and improved occupant comfort.
• Electric Motor Control: Enable efficient control of electric motors for fans, blowers, and pumps.
• Limit Switches: Activate or deactivate elements or the entire ventilation system.

Refrigeration

Refrigeration systems lower and maintain temperatures. Modern refrigerants demand durable sensors and switches with stable temperature and burst pressure capabilities.

• Heavy-Duty Pressure Transducers: Monitor refrigeration compressor output and input pressure for enhanced efficiency and reduced power consumption.
• Basic Switches: Provide presence detection, on/off function, function monitoring, and end-of-travel detection, suitable for Zone 2 hazardous locations.
• Thermal Sensors: Used in temperature controllers and for compressor temperature monitoring in refrigeration systems.
• Electric Motor Control: Enable efficient control of electric motors for fans, blowers, and pumps.
• Limit Switches: Activate or deactivate elements or the entire system.
• Pressure Switches: Monitor overpressure or low pressure indications to prevent potentially explosive situations.

Detailed Product Information

Pressure Sensors and Transducers

Board Mount Pressure Sensors, Basic ABP/ABP2 Series

• Pressure range: 1 inH₂O to 175 psi
• High accuracy, Total Error Band (TEB): 1.5% Full Scale Span (FSS)
• Temperature compensated: -40°C to 110°C
• Temperature operating: -40°C to 110°C
• Extensive media compatibility
• Analog & digital (I²C/SPI) outputs
• Optimal for configurability and 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 (I²C/SPI) outputs
• Optimal 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
• Optimal 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 for sensitivity and temperature compensation
• Responds to 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 30 gauss typ.
• Bipolar latching magnetics
• Available 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)
• Epoxy coated for enhanced stability and life

Gas Sensors

Carbon Dioxide Gas Sensor, CRIR-M1 Series

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

Carbon Monoxide Gas Sensor, ECOSURE X

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

Airflow Sensors

AWM3300 Series

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

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: 15 A to 25 A
• Choice of actuation, termination, and operating characteristics
• DT series offers two independent single-pole double-throw circuits in one housing and actuator

MICRO SWITCH Miniature Switches, V19 Series

• RoHS/REACH/Cal Prop65 compliant
• UL/CSA, cUL, ENEC, CQC certifications for global design acceptance
• Electrical ratings: 5 A, 16 A for design flexibility
• Over 1 million mechanical operations

MICRO SWITCH Miniature Switches, V15 Series

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

MICRO SWITCH Explosion-Proof Basic Switches, V15W2 Series

• Approved for use in Zone 2 hazardous locations
• IP67 equivalent sealing
• Approvals: UL, cUL, UKCA, ENEC, CQC, ATEX, IEC Ex
• Electrical rating: 5 A
• 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
• Approvals: UL/CSA, cUL, ENEC, and CE

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 switches, and indicators within AML Series for coordinated panel appearance
• Less than 1.75 inch panel depth
• Two or three positions; 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 for 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 during the coverage period and found defective by Honeywell, Honeywell will, at its option, repair or replace them without charge. This 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 products for the buyer's requirements. Specifications are subject to change without notice. The information provided is believed to be accurate and reliable at the time of publication, 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 to locate an 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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