HygroPro Aluminium Oxide Moisture Transmitter (PRODUCT DISCONTINUED - REPLACED BY THE HYGROPRO II)

  • NIST-Traceable Calibration All moisture sensors are traceable to NIST
  • Intrinsically Safe
  • Advanced Moisture Sensor Technology Advanced sensor technology with state-of-the-art software and electronics
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The HygroPro moisture transmitter, from Panametrics, is a loop-powered, intrinsically safe transmitter suitable for use in rugged industrial applications. When installed with proper protection, the HygroPro has certified intrinsically safe electronics in an IP67 housing.

The HygroPro benefits from an integrated backlit display which allows the use to view three parameters simultaneously. The display combined with the six-button keypad allow easy navigation of the software for configuration and diagnostics.

Manufactured by: Panametrics
Model: HygroPro Aluminium Oxide Moisture Transmitter (PRODUCT DISCONTINUED - REPLACED BY THE HYGROPRO II)

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Power generation
Industrial gas
Natural gas
Furnace gas/heat treating
Air dryer


Calibration ranges (dew/frost point) Standard: 50 to -112°F (+10 to –80°C) with data from +68 to -166°F (+20 to -110°C)
Operating temperature -4°F to 140°F (–20°C to 60°C)
Storage temperature 158°F (70°C) maximum
  • ±3.6°F (±2°C) above -148°F (-100°C)
  • ±5.4°F (±3°C) below -148°F (-100°C)
  • ±0.4°F (±0.2°C) above -148°F (-100°C)
  • ±0.9°F (±0.5°C) below -148°F (-100°C)
  • Voltage: 12 to 30 VDC (loop-powered, customer supplied)
  • Output: 4 to 20 mA analog, RS485 digital
  • Output Resolution: 0.01 mA/12 bits
  • Load: Max R = (PSV x 33.33) - 300 Example: (24 x 33.33) - 300 = 500 W
  • Cable: 6 ft (2 m), standard (consult factory for custom lengths); cable includes molded weatherproof connector with flying leads
Display 128 x 64 LED backlit LCD • Display from one to three parameters and diagnostics
Sample connection • 3/4-16 in. (19 mm) straight male thread with O-ring • G 1/2 with optional adapter
Operating pressure 5 mHg to 5000 psig (345 bar)
Enclosure Type 4X/IP67
  • H x W x D: 7.88 x 3.99 x 2.56 in. (200 x 101 x 65 mm)
  • Weight: 1.2 lb (550 g)
European compliance Complies with EMC directive 2014/30/EU
Hazardous area certification
  • C-US Class I, Division 1, Groups A,B,C&D, Type 4X
  • EX II 1 G EEx ia IIC T4 (ATEX)
  • Ex ia IIC T4 (IEC Ex)
Moisture sensor
Sensor Type Thin-film aluminum oxide moisture sensor
Calibration Each sensor is individually computer-calibrated against known moisture concentrations, traceable to NIST
Calibration interval Sensor recalibration by Panametrics is recommended every six to twelve months depending on application
Flow rate Gases: Static to 100 m/s linear velocity at 1 atm
Temperature sensor
Sensor Type NTC thermistor
Operating range -22°F to 158°F (–30°C to 70°C)
Accuracy ±0.9°F (±0.5°C) overall
Response time (maximum) One second in well stirred oil or 10 seconds in still air for a 63% step change in increasing or decreasing temperature
Built-In Pressure sensor
Sensor type Solid state/piezoresistive
Available Ranges
  • 30 to 300 psig (3 to 21 bar)
  • 50 to 500 psig (4 to 35 bar)
  • 100 to 1000 psig (7 to 69 bar)
  • 300 to 3000 psig (21 to 207 bar)
  • 500 to 5000 psig (35 to 345 bar)
Accuracy ±1% of full scale (FS)
Pressure rating Three times the span of the specified range to a maximum of 7500 psig (518 bar)