Building Automation Temperature Sensing
HVAC systems require reliable temperature measurement at dozens of points throughout a building — supply and return air, chilled and hot water, outdoor air, and conditioned spaces. Modern building automation systems (BAS) depend on accurate, stable temperature sensors to optimize energy efficiency, maintain occupant comfort, and protect critical equipment.
Thermometrics manufactures a complete range of HVAC temperature sensors designed for easy installation, long service life, and compatibility with major building automation platforms. From simple duct-mount averaging sensors to precision chiller plant instrumentation, our sensors deliver the accuracy and reliability that facilities engineers and mechanical contractors demand.
BAS Compatibility
Our HVAC sensors are compatible with all major building automation system platforms including Honeywell, Siemens, Johnson Controls, Schneider Electric, and Tridium Niagara. Available in RTD (PT100, PT1000, Ni1000), thermocouple, thermistor, and 4-20mA transmitter outputs to match your system requirements.
Energy Efficiency
Accurate temperature measurement is the foundation of HVAC energy optimization. Higher-accuracy sensors (Class A or better) enable tighter control deadbands, reducing energy consumption in variable-air-volume systems, chiller plants, and boiler sequences. The energy savings from precision sensors typically pay for themselves within months.
HVAC Applications
Our HVAC sensors are installed in commercial, institutional, industrial, and data center facilities for equipment monitoring, energy management, and comfort control.
Air Handling Units
Supply air, return air, mixed air, and outdoor air temperature sensing for single-zone and VAV air handling units. Duct-mount averaging sensors (4-element) for accurate mixed air temperature in large ductwork. Rigid and flexible insertion lengths to match duct dimensions.
Chillers & Cooling Plants
Chilled water supply/return, condenser water, and evaporator temperature monitoring. High-accuracy immersion RTDs (Class A) for chiller efficiency calculations and fault detection diagnostics. Thermowell-mounted for pressure isolation in closed-loop systems.
Boilers & Heating Systems
Hot water supply/return, steam, and combustion air temperature monitoring for boilers, heat exchangers, and heating hot water systems. High-temperature rated assemblies for steam applications to 200°C with brass or stainless steel thermowells.
Heat Exchangers
Inlet/outlet temperature measurement on both sides of plate, shell-and-tube, and air-cooled heat exchangers. Matched sensor pairs (±0.1°C) for accurate approach temperature and effectiveness calculations.
Data Center Cooling
Supply air, return air, under-floor plenum, and hot aisle/cold aisle temperature monitoring for data center CRAC/CRAH units. High-accuracy sensors for close-tolerance cooling control and ASHRAE recommended environmental guidelines compliance.
Building Envelope
Outdoor air, rooftop, and weather station temperature sensors with weatherproof (NEMA 4X) housings and solar radiation shields. Wall-mount room temperature sensors with optional LCD displays for occupied space monitoring.
HVAC Sensor Assemblies
Thermometrics offers a complete HVAC sensor product line. All are available in the output type and connection style required for your building automation system.
Duct Temperature Sensors
Rigid and averaging duct-mount RTD sensors for supply, return, mixed, and outdoor air temperature measurement in HVAC ductwork.
- PT100 and PT1000 output
- Single-point and averaging
- 6" to 24" insertion lengths
- NEMA 4 enclosures
Immersion RTD Probes
PT100 immersion sensors for chilled water, hot water, condenser water, and glycol loop temperature measurement.
- -50°C to +200°C range
- Class A accuracy
- Brass and SS thermowells
- Spring-loaded option
Pipe-Strap Sensors
Surface-mount pipe-strap thermocouple and RTD sensors for non-invasive pipe temperature measurement where cutting into piping is not practical.
- Clamp-on installation
- No pipe penetration
- Insulated for accuracy
- Spring-loaded strap
HVAC Sensor Specifications
| Parameter | RTD Sensors | Thermocouples |
|---|---|---|
| Temperature Range | -50°C to +200°C | -50°C to +400°C |
| Accuracy | Class A / Class B per IEC 60751 | ±1°C per ASTM E230 |
| Element Types | PT100, PT1000, Ni1000, 10K thermistor | Type T, J, K |
| Output Options | 3/4-wire RTD, 4-20mA, 0-10V | mV, 4-20mA with transmitter |
| Enclosures | NEMA 3R, 4, 4X | NEMA 3R, 4, 4X |
| Mounting | Duct, pipe, immersion, wall, outdoor | Duct, pipe, immersion, wall |
| BAS Compatibility | Honeywell, Siemens, JCI, Schneider | All major platforms |
| Documentation | COC, NIST cal available, spec sheets | COC, NIST cal available, spec sheets |
ASHRAE Guidelines
For data center applications, Thermometrics sensors support monitoring per ASHRAE TC 9.9 recommended environmental guidelines. Our high-accuracy sensors enable compliance verification with ASHRAE Class A1 through A4 environmental envelopes, helping data center operators maintain optimal conditions for IT equipment reliability and energy efficiency.
Your HVAC Sensor Partner
Easy Installation, Reliable Performance
HVAC contractors and facilities engineers need sensors that install quickly and work reliably for years. Thermometrics delivers both.
- Compatible with all major BAS platforms
- Multiple output types: RTD, 4-20mA, 0-10V
- Duct, pipe, immersion, and wall mount options
- NEMA 3R/4/4X weatherproof enclosures
- Spring-loaded probes for thermowell installation
- Averaging elements for large ductwork
- High-accuracy matched pairs for delta-T
- Long service life in harsh environments
Specification & Ordering Support
We make specifying and ordering HVAC sensors simple with comprehensive support:
- BAS compatibility verification
- Sensor selection assistance
- Project quantity pricing
- Submittal packages for engineers
- NIST-traceable calibration available
- Custom lead lengths and connectors
- Quick delivery on standard configurations
- Technical support for installation questions
Ready to Spec Your
HVAC Sensors?
Tell us about your building automation system, sensor mounting requirements, and quantity needs. We will provide product recommendations and a detailed quotation for your project.