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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.

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
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.
1000 Series Image
  • Unpluggable Termination Block Simplifies Installation and Service
  • Platinum RTD or Thermistor Element
  • Operating Range and Setpoint – 55 to 95° F
  • Changing Resistance or 4-20 mA Output
  • Maintenance Free
The Series 1000 Room Temperature Sensors offer a wide range of features and functionality that deliver exceptional occupant comfort in even the most demanding application environments. The product family range includes plain sensing only variants, as well as types with temperature setpoint LCD display and night set back. All sensors incorporate precision temperature sensing elements to accurately and reliably measure room temperature. Their compact design results in an attractive, inconspicuous installation. A styled ventilation ring optimizes airflow through the cover for fast measurement response and superior control.
QFM Series Image
  • 4 to 20 mA or 0 to 10 VDC Output Signals
  • High Degree of Accuracy
  • Versions with LCD Displays Available
The QFM Series Duct Relative Humidity and Relative Humidity/Temperature Sensors monitor and transmit changes in humidity and temperature to the building control systems. Several models are available for humidity only (in 5%, 2% and 2% certified) or for humidity and temperature sensing (also in 5%, 2% and 2% certified versions). The humidity only units are available in either 4 to 20 mA or 0 to 10 Volt signal versions. Combination humidity and temperature units are also available in either dual current or voltage versions, transmitting proportional signals back to the controller. Nickel 1000 Ohm (Siemens type) or Platinum 1000 Ohm RTD (385 ALPHA type) temperature outputs on combination versions are also offered.
TE200 Series Image
  • Thermistor or Precision RTD
  • Various configurations available
  • Selection of enclosures
  • Custom laser etching available
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.
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.
OUT Series Image
  • Ruggedly Constructed for Use in All Climates
  • Accurate and Reliable Indication of Temperature
  • Simple Installation Requires No Special Tools
  • Resistive or 4-20 mA Output
Outdoor and surface 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. All sensors incorporate precision temperature sensing elements to accurately and reliably measure temperature. Outdoor temperature sensors are used to monitor the temperature of outdoor air. This variable is often used in a variety of HVAC control strategies, including outdoor reset and building ventilation. Pipe surface temperature sensors are often used in place on immersion type sensors, particularly in cases where sensor installation occurs after the system if filled.
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.
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