A/100-3W-I-6" Immersion RTD Sensor | 3-Wire PT100 | 6" Probe | HVAC

Precision 3-Wire RTD Sensors for Water-Based HVAC Monitoring

The A/100-3W Immersion RTD Sensor Series delivers accurate temperature measurement for chilled water loops, hot water systems, boilers, pumps, and chillers. Each model features a 100Ω platinum RTD (PT100) sensor in a 3-wire configuration—ideal for applications requiring reduced lead wire error over long cable runs.

These sensors include a 6-inch (15.24cm) stainless steel probe and a welded thermowell, housed in a selection of enclosures: plenum-rated ABS plastic (PB), galvanized steel (GD), IP66 washdown-rated polystyrene (4X), or outdoor-resistant aluminum (BB). Built to DIN EN 60751 Class A accuracy standards and backed by a 5-Year Limited Warranty.

Key Features

• Sensor Type: 100Ω Platinum RTD (PT100), 3-wire
• Accuracy: ±0.06% Class A | ±0.15°C at 0°C
• Probe: 6” (15.24 cm) length, 0.25” (0.635 cm) diameter, 304 stainless steel
• Thermowell: Welded 304 SS | ½” NPT male thread
• Enclosures: ABS (PB), Galvanized Steel (GD), Polystyrene (4X), or Aluminum (BB)
• Response Time: 8 seconds (63% step change)
• Self-Heating: 7 mW/°C (Still Air)
• Max Current: 5 mA
• Operating Temp: -40 to 200°C
• Certifications: CE, UKCA, RoHS2, WEEE
• Warranty: 5-Year Limited Warranty
  

Applications

• Chilled Water & Hot Water Systems
• Boilers, Pumps & Compressors
• BAS / BMS Integration
• Plenum Mechanical Rooms
• Outdoor or Washdown Installations
  

Models

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

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