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The Series HHT Hazardous Area Humidity/Temperature Transmitter takes accurate measurements in the harshest of environments. The explosion-proof model is offered with 4 to 20 mA output for humidity only. The intrinsically safe version is offered with 4 to 20 mA output for humidity and temperature, and do require an intrinsically safe barrier to meet hazardous area approvals.

Product Applications

• Process monitoring
• Offshore HVAC monitoring
• Dust and grain handling

Features

• FM approved explosion-proof and intrinsically safe models
• Integral LCD option
• Dual temperature and relative humidity output models

Specifications

• Intrinsically Safe or Explosion-Proof Models
• Relative Humidity Range : 0 to 100% RH.
• Temperature Range : -40 to 140°F (-40 to 60°C).
• Accuracy : ±2% 10 to 90% RH, ±0.9°F at 77°F (±0.5°C at 25°C).
• Temperature Limits : -40 to 140°F (-40 to 60°C).
• Power Requirements : For intrinsically safe models HHT-IX, 9.5-28 VDC.
• For explosion-proof models HHT-EX, 16.5-28 VDC.
• Output Signal : 4-20 mA, 2 channels for humidity/temperature models (loop power on RH)
• Enclosure Rating : NEMA 4X (IP66)
• Compliance : CE, FM.

Models & Ordering