Honeywell Sensor and Switch Solutions for HVAC

Overview

Honeywell offers a comprehensive range of sensor and switch solutions tailored for various HVAC applications. These components are crucial for optimizing system performance, improving energy efficiency, and ensuring better indoor air quality.

HVAC Applications and Honeywell Products

The following table details various Honeywell product lines and their applicability to different HVAC categories:

✓ 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 ventilation systems meet the needs of growing trends for more environmentally friendly buildings with better indoor air quality.

• Differential Pressure Sensors: Measure differential pressure for static duct pressure and indoor air quality.
• CO2 Sensors: Adjust ventilation rates based on carbon dioxide levels, crucial for demand control and energy recovery ventilation.
• CO Sensors: Provide high-quality carbon monoxide detection in residential or commercial environments to help control indoor air quality.

Variable Air Volume (VAV) Control

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.

• Airflow 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.
• Magnetic Sensor ICs: Provide high-performance mechanical switching on direct-acting damper actuators.
• Basic Switches: Activate or deactivate elements or the entire ventilation system.

Air Purification & Filter Monitoring

Recent trends emphasize cleaner and healthier air, increasing the need for air purification and filter monitoring. Honeywell sensors support these needs.

• Differential Pressure Sensors: Monitor differential pressure for clogged filter detection, improving air quality and reducing power consumption.
• Airproving Switches: Used as air proving switching assemblies, along with 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, balancing airflow in complex HVAC systems.
• 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 reliable sensors for efficient operation and cooling. Honeywell sensors monitor key parameters to enhance system efficiency.

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

Heating System: Commercial

Commercial boilers rely on combustion to heat water and air. Energy efficiency and safety are paramount. Honeywell sensors contribute to both 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 mass airflow for VAV controllers and in-line transmitters.
• Flow Sensors: Monitor the flow of warm air or water within the heating system to enhance system efficiency.
• Motor Control Switches: Enable efficient control of electric motors driving fans, blowers, and pumps.
• CO Sensors: Measure CO levels, crucial for safety as incomplete combustion can produce carbon monoxide.
• Limit Switches: Placed on gas pilots to shut off gas flow if the pilot goes out.
• Position Sensing Switches: Monitor damper or valve position, initiating program sequences when fully open.
• Float Switches: Used as air-proving switching assemblies or as float switches for indicating pipe flow backup.

Heating System: Residential

Residential heating systems require energy efficiency, reliability, and safety. Honeywell sensors improve efficiency and detect faults and leaks.

• Flow Sensors: Control the flow of warm air or water and detect leaks.
• CO Sensors: Detect incomplete combustion, as carbon monoxide is a hazardous gas produced by incomplete fuel combustion.
• Temperature Sensors: Used in smart thermostats to efficiently manage HVAC systems and improve occupant comfort.
• Motor Control Switches: Enable efficient control of electric motors driving fans, blowers, and pumps.
• Limit Switches: Activate or deactivate elements or the entire ventilation system.

Refrigeration

Refrigeration systems require durable sensors and switches with stable temperatures and burst pressures, especially with new refrigerants that improve system efficiency. Honeywell sensors monitor critical parameters for safe and efficient operation.

• Heavy-Duty Pressure Transducers: Monitor refrigeration compressor output and input pressure to enhance system efficiency and reduce power consumption.
• Basic Switches: Used for presence detection, on/off functions, function monitoring, and end-of-travel in hazardous locations.
• Thermal Sensors: Used in temperature controllers and for compressor temperature monitoring in refrigeration systems.
• Motor Control Switches: Enable efficient control of electric motors driving 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.

Product Categories

Pressure Sensors and Transducers

• Board Mount Pressure Sensors, Basic ABP/ABP2 Series: Offer a pressure range from 1 inH2O to 175 psi, high accuracy (1.5% FSS TEB), temperature compensation from -40°C to 110°C, extensive media compatibility, and analog & digital outputs. Ideal for configurability and value.
• Board Mount Pressure Sensors, TruStability™ RSC, HSC and SSC Series: Provide a pressure range from 0.5 inH2O to 150 psi, high accuracy (1.0% FSS TEB), temperature compensation from -40°C to 85°C, and outstanding EMI/EMC performance. Best for accuracy, stability, and performance.
• Heavy Duty Pressure Transducers, MIP Series: Cover a pressure range from 15 psi to 900 psi with high accuracy (0.75% FSS TEB) and an operating temperature range of -40°C to 125°C. Features rugged stainless steel 304L construction and outstanding EMI/EMC performance. Best for accuracy, stability, and performance.

Hall-Effect and Magnetoresistive Sensor ICs

• Linear Hall-Effect Sensor ICs, SS490 Series: Feature small size, low power consumption, single current sinking or sourcing linear output, built-in laser trimmed resistors for sensitivity and temperature compensation, and respond to positive or negative gauss with a quad Hall sensing element for stable output.
• Magnetoresistive Sensor ICs: Available in Nanopower (SM351LT/SM353LT) and Standard Power (SM351RT/SM451R/SM353RT/SM453R) series. Offer sensitivities of 7 G typ. (SM351LT/SM351RT/SM451R) or 14 G typ. (SM353LT/SM353RT/SM453R) and omnipolar sensing.
• High Sensitivity Latching Hall Sensors (SS360ST/NT/PT and SS460S): Provide the fastest response time in their class, no chopper stabilization, high sensitivity (operates from 30 gauss typ.), bipolar latching magnetics, and can be supplied on tape-and-reel.

Temperature Sensors

• Thermistors, 192/194 Series: High-quality, low-cost, resistance-temperature-matched interchangeable units with a dissipation constant in still air of 0.75 mW/°C and a time constant in air of 15.0 s. Feature epoxy coating for enhanced stability and life.

Gas Sensors

• Carbon Dioxide Gas Sensor, CRIR-M1 Series: A single-channel, non-dispersive infrared (NDIR) sensor for detecting Carbon Dioxide. It is small, maintenance-free for normal indoor applications, offers enhanced long-term stability, higher accuracy (±40 ppm ±3% of reading), consistency, repeatability, and auto baseline correction (ABC).
• Carbon Monoxide Gas Sensor, ECOSURE X: A cost-effective, two-electrode electrochemical cell designed for CO detection in domestic/residential settings, industrial fire detection, and ventilation control. Features a unique design for extreme environments, suitability for accredited products, and an integrated active filter to prevent false alarms from household vapors.

Airflow Sensors

• AWM3300 Series: Small-sized sensors with amplified signal conditioning, offering a range from 30 SCCM to 5 mBar. They provide an analog output, low power consumption (50 mW typ.), and operate within a temperature range of -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" switches with low operating force and differential travel, offering long mechanical life (up to 20,000,000 cycles). Current ratings range from 15 A to 25 A. The DT series offers two independent circuits in one housing.
• MICRO SWITCH V-Basic Miniature Switches, V19 Series: RoHS/REACH/Cal Prop65 compliant with global certifications (UL/CSA, cUL, ENEC, CQC). Available in 5 A and 16 A ratings with over 1 million mechanical operations.
• MICRO SWITCH V-Basic Miniature Switches, V15 Series: Designed for 10K to 50K operations at full load or 5M mechanical operations. They feature world-wide package size acceptance and current ratings of 10 A and 26 A, with multiple agency approvals.
• MICRO SWITCH Explosion-Proof Basic Switches, V15W2 Series: Approved for Zone 2 hazardous locations, IP67 equivalent, with ATEX and IEC Ex approvals. They have a 5 A electrical rating and over one million mechanical operations.
• MICRO SWITCH Subminiature Switches, ZM/ZW/ZX Series: Suitable for lower cost-of-failure applications, these switches are small, lightweight, and offer enhanced life and ample electrical capability. They come with choices of low energy or power-duty ratings and multiple agency approvals.

MICRO SWITCH Toggle Switches

• MICRO SWITCH Toggle Switches, NT Series: ISA 12.12.01 certified, designed for use near flammable hydrocarbon refrigerants. They feature quick-connect spade terminals, UL191 electrical rating, sealing to NEMA 3, 3R, 4, 13, and IP67, and an operating temperature range of -40°C to 71°C.

MICRO SWITCH Pushbutton Switches

• Operator Interface Switches and Indicators, AML Series: Include pushbuttons, paddles, rockers, key-actuated switches, and indicators for coordinated panel appearance. They feature less than 1.75 inch panel depth, two or three positions, maintained or momentary action, and one-, two-, or four-poles with double throw options.

Pressure Switches

• Extended Duty Pressure Switches, 5000 Series: Designed for extended duty applications, these switches are factory set but adjustable in the field. They feature direct action blade contacts and have burst pressure ratings of 750 psi (0.5 psi to 24 psi set point) and 1250 psi (25 psi to 150 psi set point).

Warranty and Remedy

Honeywell warrants its manufactured goods to be free from defective materials and faulty workmanship. The standard Honeywell product warranty applies unless otherwise agreed in writing. For warranted goods returned during the coverage period, Honeywell will repair or replace defective items at its discretion. This is the buyer's sole remedy and is in lieu of all other warranties, expressed or implied, including merchantability and fitness for a particular purpose. Honeywell shall not be liable for consequential, special, or indirect damages.

While Honeywell may provide information and engineering support, it is the buyer's responsibility to determine the suitability of Honeywell products for their specific requirements. Specifications are subject to change without notice.

For More Information

Honeywell Sensing Solutions is accessible through a worldwide network of sales offices and distributors. For application assistance, current specifications, pricing, or to find the nearest Authorized Distributor, please visit automation.honeywell.com/hss or contact them via phone:

• USA/Canada: +3026134491
• Latin America: +13058058188
• Europe: +441344238258
• Japan: +81 (0) 3-6730-7152
• Singapore: +6563552828
• Greater China: +864006396841

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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