A/100-3W-D-12" Platinum RTD Duct Sensor | 100Ω 3-Wire | 12” Probe | Plastic Enclosure

Precision RTD Temperature Monitoring for Ducted HVAC Systems

The A/100-3W-D-12" Series delivers high-accuracy duct air temperature sensing using a platinum 100Ω RTD (PT100) in a 3-wire configuration, optimized for long cable runs and reduced signal noise. Each model includes a 12-inch (30.48 cm) stainless steel probe and is housed in a variety of enclosures to suit different installation environments.

Compliant with DIN EN 60751 Class A standards, this sensor ensures fast response, minimal drift, and long-term reliability. Ideal for supply, return, mixed, or discharge air ducts in rooftop units, AHUs, and HVAC control zones.

Key Features

• Sensor Type: 100Ω Platinum RTD (PT100), 3-Wire
• Accuracy: ±0.06% Class A | ±0.15°C @ 0°C
• Probe: 12" (30.48 cm) L × 0.25" (0.635 cm) Dia | 304 Stainless Steel
• Output: 100Ω @ 0°C | PTC Curve (DIN EN 60751)
• Response Time: 8 seconds (63% step change)
• Max Current: 5 mA | Self-Heating: 7 mW/°C
• Operating Temp: -40 to 200°C
• Humidity: 10–95% RH (non-condensing)
• Certifications: CE, RoHS2, WEEE
• Warranty: 5-Year Limited Manufacturer Warranty
  

Applications

• Rooftop Units (RTUs)
• Supply / Return / Mixed / Discharge Ducts
• Air Handling Units (AHUs)
• HVAC Control Loops for BMS/BAS
• Utility Rooms & Semi-Exposed Environments
• Washdown & Humid Zones (4X model)
  

Models

Note: Need a different size? Simply click the ‘Make an Enquiry’ button above to request a custom quote.

• Datasheet
• PB Factsheet
• BB Factsheet
• GD Factsheet
• 4X Factsheet