HVAC Sensors

HVAC Sensors
HVAC Sensors
An HVAC sensor is any device used to measure the conditions of an enclosed space, room or building. HVAC sensors include thermostats, humidistats, carbon dioxide sensors, pressure sensors and more.

HVAC sensors are connected to equipment and regulate air quality. Thermostats measure temperature, switching on and off heaters and air conditioners so that measured temperature matches a predetermined setpoint. Humidistats measure humidity and work with thermostats and heaters to protect equipment from condensation and corrosion. Carbon dioxide sensors monitor the quality of the air and regulate fresh air with ventilation adjustments. Pressure sensors monitor and adjust air flow.

HVAC sensors are ultimately responsible for the efficiency of the entire HVAC system and the overall air quality of the environment.

DUCT Series Image
  • Single Point or Averaging Sensors
  • Probe Lengths up to 24 Feet
  • Simple Installation Requires No Special Tools
  • Accurate and Reliable Indication of Duct Temperature
  • Bracket Mounted Option
The Duct Temperature Sensors monitor and transmit changes in temperature to the building control system. Specific devices within the range are compatible with most North American building automation systems. They install directly into the duct and are equipped with necessary mounting hardware. All sensors incorporate precision temperature sensing elements to accurately and reliably measure temperature. Duct temperature sensors are used throughout forced air HVAC systems to monitor air temperature within the ductwork. Single point sensors include one sensing element. Averaging sensors incorporate multiple sensing elements and are typically used in larger ducts where some temperature stratification may occur.
RH Series Image
  • Highly stable RH sensor element
  • Humidity range: 0-100%
  • Accuracy available 2%, 3%, & 5%
  • Choice of precision temperature sensors
  • LCD display available
  • Field selectable outputs
  • AC/DC operation
  • Custom logo available
NS Network Sensors Series Image
  • BACnet® Master-Slave/Token-Passing (MS/TP) Protocol Communication — Provides Compatibility with Metasys System Field Controllers and Facility Explorer Programmable Controllers in a Proven Communication Network
  • Backlit LCD Available on Some Models — Provides Real-Time Status of the Environment with Backlighting Activated During User Interaction
  • Simple Temperature Setpoint Adjustment Available on Some Models — Enables You to Change the Setpoint with the Turn of a Dial
  • Onboard PIR Occupancy Sensor Available on Some Models — Maximizes up to 30% Energy Savings in High-Energy Usage Environments, and Facilitates Trending of Floor Space Usage
  • Temporary Occupancy Available on Some Models — Provides a Timed Override Command, Which Temporarily Initiates an Alternate Mode
  • Field Selectable Default Display Setting on Some Models — Allows You to Toggle between Temperature and RH on the Display, and Set the Desired Default for Continuous Viewing
  • Fahrenheit/Celsius (F/C) Button Available on Some Models — Toggles the Display Temperature between Degrees Celsius and Degrees Fahrenheit
The NS Series Network Sensor offering includes NS Series Network Zone Sensors and NS Series Network Discharge Air Sensors. The NS Series Network Sensors are designed to function directly with Metasys® system Field Equipment Controllers (FECs), Input/Output Modules (IOMs), VAV Modular Assembly (VMA16) Controllers, and Facility Explorer FX-PC Series Programmable Controllers (FX-PCGs, FX-PCVs, and FX-PCXs).
The majority of NS Series Network Zone Sensors monitor room temperature; however, options are available to also monitor zone humidity, carbon dioxide (CO2), local temperature setpoint adjustments, and other variables. This data is transmitted to a controller on the Sensor Actuator (SA) Bus.
Some models of NS Series Network Zone Sensors include an onboard passive infrared (PIR) occupancy sensor that detects motion to determine if a space is occupied. This feature maximizes up to 30% energy savings in high-energy usage environments such as schools, dormitories, offices, hospitals, and hotels by adjusting the temperature of the space based on the occupancy status. In addition, the PIR occupancy sensor facilitates trending of floor space usage in these environments.
The NS Series Network Zone Sensors include models with a temperature setpoint dial and LCD that allows occupants to view the zone temperature, Relative Humidity (RH), and view and adjust the zone temperature setpoint. Some temperature and humidity models include a push button to toggle between temperature and RH on the display. These models also have the capability to set the desired default display to either temperature or RH.
A fan mode push button is included to set the desired fan speed (AUTO-OFF-low-medium-high). An occupancy override function allows the user to signal to the controller that the zone is occupied to override the scheduled mode. Some models have DIP switches to set a unique address for applications that require multiple sensors.
For communication wiring flexibility, the wires connecting the network zone sensor to a controller can be terminated using a modular jack or screw terminals. Note: Mixing of phone jack and screw terminal devices on the same SA bus segment must be avoided.
Each network sensor includes an SA Bus access port to allow accessories to access the SA Bus. This plug allows accessories to service or commission the connected controller or gain access to any other controller on the same Field Controller (FC) Bus.
The NS Series Network Zone Sensor offering includes models that can be surface mounted, vertical wallbox mounted, or flush mounted to meet the requirements of the specific application. Some NS Series Sensor models are designed to assist with the California Energy Code (Title 24). Select models offer stylish black enclosures to suit specific architectural and interior design needs.
The NS Series Network Discharge Air Sensors monitor the duct temperature, typically at the discharge of the VAV box, and transmit this data to a local controller on the SA Bus using the 10 ft (305 cm) wiring lead included with the unit. The 10 ft (305 cm) wiring lead consists of four 22 AWG (0.6 mm) trade size color-coded wires encased in a plenum-rated jacket. Each of the wires is stripped and tinned for easy connection to the SA Bus screw terminal block.
The NS Series Network Discharge Air Sensors are available with either a 4- or 8-in. (102 or 203 mm) temperature probe. All models include DIP switches for applications requiring multiple discharge air sensors, each with a unique DIP switch address
231 Series Image
  • Hinged Cover
  • 4 Field Selectable Outputs
  • Field Accessible Push-Button Zero and Remote Zero
Setra’s 231 is a multi-configurable, wet-to-wet differential pressure transducer offering the user an all-in-one device with field selectable pressure ranges and analog outputs. The device is offered with an optional 3 or 5 valve machined brass manifold for ease of installation and maintenance. The 231 has a robust, NEMA 4 enclosure with a hinged, captive cover allowing for easy access to switches for adjusting the range and output. An optional display is available that allows users to view high, low, and differential pressure readings on a simple rotating cycle.
264 Series Image
  • Up to 10 PSI Overpressure
  • Reverse Wiring Protection
  • Internal Regulation Permits Use With Unregulated DC Power Supplies
With millions of sensors installed world wide, Setra’s 264 is the standard for low differential pressure measurement in HVAC building automation. The 264 very low differential pressure transducer uses a dead-ended stainless steel welded capacitive sensing element that requires minimal amplification and delivers excellent accuracy and longterm stability in critical installations. The 264 has a 3 year, unconditional warranty, giving the end-user peace of mind well beyond the initial commissioning phase and guarantees performance well after the BAS warranty. The 264 utilizes a robust design that offers brass barbed fittings, and an optional conduit cover for easy and consistent installation.
TE200 Series Image
  • Thermistor or Precision RTD
  • Various configurations available
  • Selection of enclosures
  • Custom laser etching available
TE-6300 Sensors Series Image
  • Full Line of Versatile Sensors — Supports All Your Temperature Sensing Needs from a Single Supplier: Wall Mount, Outdoor Air, Duct Probe, Duct Averaging, Strap-Mount, Well Insertion, and Flange Mount Duct Probe
  • Single Assembly Ordering — Simplifies Ordering; Provides a Complete Assembly in One Box
  • Models Featuring an Integral NPT Adaptor — Increase Sensor Connection Strength, Which Eliminates the Need for a Special Adaptor
  • Models with a Stainless Steel Sensor Probe — Protect the Sensor While Increasing Corrosion Resistance
  • Metal Enclosure (TE-63xxm Models Only) — Meets Plenum Requirements
  • Models Featuring a Retainer for the Sensor Holder — Allow You to Lock the Sensor Holder into the Conduit Box
  • Brushed Stainless Steel Mounting Plate — Offers a Durable, Aesthetically Pleasing Design
  • Low Profile Flush Mount Design — Provides a Tamper-Proof Installation Ideally Suited for Schools, Sporting Complexes, Retailers, Prisons, and More
The TE-6300 Temperature Sensor line provides economical solutions for a wide variety of temperature sensing needs, including wall-mount, outdoor-air, duct, strap-mount, well-insertion, duct-averaging, and Variable Air Volume (VAV) flange-mount duct-probe applications. The TE-6300 line offers both a metal and a plastic enclosure for the most popular models. Each sensor is packaged with the necessary mounting accessories to maximize ordering and installation ease and reduce both commissioning time and cost.
Sensors are available in the following types:
  • 1k Ohm Thin-Film Nickel
  • 1k Ohm Nickel Averaging
  • 1k Ohm Thin-Film Platinum
  • 100 Ohm Platinum Equivalent Averaging
  • 1k Ohm Platinum Equivalent Averaging
  • 2.2k (2,252) Ohm Thermistor
  • 10k Ohm Thermistor, Johnson Controls® Type II
A99B Series Image
  • Assortment of Mounting Hardware Available
  • Very Accurate Sensing Element
  • Stainless Steel Sensor Bulb
  • Variety of Lead Lengths
The A99B Series Temperature Sensors are passive PTC (Positive Temperature Coefficient) sensors. The A99B sensors are splashproof and are designed to measure temperature in a variety of refrigeration applications. Several accessories allow easy tailoring of the temperature sensor to various mounting configurations. Applications include temperature sensing for freezers and coolers, as well as in defrost termination sensing, space and return air temperature sensing, and condenser fan cycling.
230 Series Image
  • No Liquid Fill Diaphragm
  • Low Line Pressure Effect
  • Gas and Liquid Compatible
The Model 230 is Setra’s highest accuracy solution for monitoring differential pressure in wet-to-wet applications. Its single diaphragm design enables a true wet-to-wet differential pressure measurement with superior ±0.25% FS accuracy compared to competitive units which calculate differential pressure using two single point pressure sensors. The stainless steel capacitive sensor provides a highly accurate, linear analog output proportional to the pressure over a wide temperature range. The 230 is offered with an optional 3 or 5 valve machined brass manifold for ease of installation and maintenance.
IMM Series Image
  • Resistive or 4-20 mA Output
  • 2.5”-6” Probe Length
  • Suitable for Hot or Chilled Fluids
  • Accurate and Reliable
  • Simple Installation Requires No Special Tools
The Immersion Temperature Sensors with Well monitor and transmit changes in temperature to the building control system. Specific devices within the range are compatible with most North American building automation systems. The sensors include a well to enable service and repair without draining the system. All sensors incorporate precision temperature sensing elements to accurately and reliably measure temperature.
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