Honeywell Duct Sensor Assembly
Honeywell C7023J2007 10K ohm NTC Type III Averaging Duct Temperature Sensor
Honeywell C7041R2018 20K ohm NTC Duct Averaging Temperature Sensor 24 ft Rigid Copper
Honeywell C7041R2000 Averaging Duct Temperature Sensor 20K Ohm -40 to 250°F
Honeywell Duct Sensor Assemblies: Precision Sensing for HVAC Systems
When it comes to measuring and controlling airflow conditions inside ventilation systems, few names carry the weight of Honeywell. Their duct sensor assemblies represent decades of engineering refinement aimed at one goal: delivering accurate, reliable data from inside the duct — where it matters most. Whether a system is monitoring discharge air, return air, or outside air temperature, Honeywell's duct-mounted sensing solutions are a go-to choice for HVAC technicians, building automation engineers, and facility managers alike.
What Honeywell Duct Sensor Assemblies Do
A duct sensor assembly is the frontline instrument of any HVAC control loop. It reads real-time conditions inside the air handling infrastructure and feeds that data back to controllers, thermostats, and building management systems (BMS). Honeywell's lineup spans both temperature-only and combination temperature/humidity configurations, making them versatile across a wide range of commercial, industrial, and residential applications.
The LF0, LF00, LF01, LF10, LF20, and PF20 Duct Temperature Sensors are used in ventilating and air conditioning systems to measure discharge, return, or outside air temperature. These sensors are suitable for use in systems using Pt 100, Ni 1000, Pt 1000, NTC 10k, or NTC 20k temperature sensing elements, giving integrators the flexibility to match a sensor to virtually any existing control architecture.
Thermistor-Based Assemblies for BAS Integration
Honeywell's Thermistor Temperature Duct sensors are designed for HVAC and BAS systems, featuring a stainless steel insertion probe available in multiple mounting styles and a single assembly ordering format for simplified procurement. The sensors come complete and ready to install for their specific application, reducing installation time and the risk of field-assembly errors. Models like the C7041 series offer 20K thermistor elements in metallic NEMA 1 enclosures, while the C7023 series provides 10K Type III thermistors with longer probe lengths suited to wider duct diameters.
C7770 NTC Series: Built for Electronic Control Systems
The C7770 NTC duct temperature sensors are direct-wired sensors that monitor the temperature of discharge or return air in ducts, designed for use with the Excel 5000 family and other Honeywell controllers. These sensors can mount on a flat duct or plenum surface, or for a plenum-rated application, in a standard utility conduit box, offering real installation flexibility for both new construction and retrofit projects.
Stainless Steel Probes and Moisture Resistance
Probe construction is a critical differentiator in duct sensing. Honeywell's single-point temperature sensors utilize a precision sensing element encapsulated in a 304 series stainless steel probe available in various lengths, with all probes providing excellent heat transfer, fast response, and resistance to moisture penetration. This durability is essential in air handling environments where condensation and airborne particulates can degrade lesser sensors over time.
Discharge Air Temperature Sensors (DATS) for Zoning Applications
The Honeywell C7735A1000 Duct Air Temperature Sensor is a duct-mounted temperature probe that provides capacity control of HVAC equipment, used with zoning solutions that include TZ-3, EMM-3, and EMM-3U control panels — sensing delivered air temperature and cutting off heating or cooling when operating limits are exceeded. The C7735A1000 is also heat pump compatible, making it a strong choice for modern multi-stage systems.
Why Choose Honeywell for Duct Sensing?
- Broad sensor element compatibility: Pt 100, Ni 1000, Pt 1000, NTC 10k, and NTC 20k elements supported across product lines
- Ready-to-install assemblies: Fully assembled with stainless steel probes, enclosures, and wiring — no field fabrication required
- Wide mounting options: Flat duct surfaces, conduit boxes, handy boxes, and plenum-rated configurations available
- BAS/BMS compatibility: Engineered to integrate with Honeywell controllers and third-party building automation systems
- IP and NEMA ratings: Select models carry IP54 certification for protection against dust and moisture ingress
Explore the full range of Duct Sensor Assemblies available, or browse the complete Honeywell product catalog to find sensors, controllers, and HVAC accessories engineered to work together.