HPT717 - Hansen - Pressure Temperature Sensor For Ammonia

The Hansen HPT717 is a pressure/temperature transducer specifically designed for ammonia and other industrial refrigerants. It integrates both pressure and temperature sensing in a single unit and is commonly used for superheat and sub-cooling measurement in refrigeration systems.

Key Specifications

• Model: HPT717
• Refrigerant Compatibility: Ammonia (standard), also suitable for R-22, R-134a, CO₂, and propane with appropriate refrigerant key
• Measurement Range:
  • Temperature: -35°F to +150°F (-37°C to +65°C)
  • Ambient Temperature: -20°F to +125°F (-30°C to +50°C)
• Output Signal: 4–20 mA
• Input Power: 24 VDC
• Accuracy: ±1°F (±0.6°C) for superheat/sub-cooling
• Safe Working Pressure: 400 psig (27 bar)
• Connection: ¾" NPT
• Enclosure: NEMA 4 (IP65), watertight
• Body Material: Steel, zinc-plated with yellow chromate
• Max Load Resistance: 1200 Ohms at 24 VDC
• Weight: ~5 lbs
• Dimensions: Approx. 6" W × 8" H × 25" L

Applications

• Superheat sensing for electronic expansion valve control
• Sub-cooling measurement
• Non-condensable gas detection at condenser outlet
• Compressor inlet/outlet monitoring