HygroPro Aluminium Oxide Moisture Transmitter

  • 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: GE Panametrics
Model: HygroPro Aluminium Oxide Moisture Transmitter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


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


Dew Point/Frost Point Calibration Ranges Overall: 68°F to -166°F (20°C to -110°C)
Standard: 68°F to -112°F (20°C to –80°C)
Operating Temperature –4°F to 140°F (–20°C to 60°C)
Storage Temperature 158°F (70°C) maximum
Warm-Up Time m, cm, ft., psi, kPa, mBar, °C. °F (Barologger Edge: psi, kPa, mBar, °C, °F)
  Meets specified accuracy in three minutes
Calibrated Accuracy @ 77°F (25°C) ±3.6°F (±2°C) above -148°F (-100°C)
±5.4°F (±3°C) below -148°F (-100°C)
Repeatability ±0.4°F (±0.2°C) above -148°F (-100°C)
±0.9°F (±0.5°C) below -148°F (-100°C)
Response Time Less than five seconds for a 63% step change in moisture content in either wet-up or dry-down cycle
Power 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 adaptor
Operating Pressure 5 mHg to 5000 psig (345 bar)
Enclosure Type 4X/IP67
Dimensions 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 2004/108/EC and PED 97/23/EC for DN<25
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 GE is recommended every six to twelve months depending on application.
Flow Rate Gases: Static to 100 m/s linear velocity at 1 atm
Built-In Temperature 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  
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)
Operating Temperature -20°C to 80°C
Maximum # Readings 40,000 readings FRAM memory, or up to 120,000 using linear data compression
Memory Slate and Continuous
Communication Optical Infrared Interface. Conversion to RS-232, USB, SDI-12. Serial at 19,200 bps, 38,400 bps with USB
Size 7/8" x 6.25" (22 mm x 159 mm)
Weight 4.6 oz. (129 grams)
Corrosion Resistance Titanium based PVD coating
Other Wetted Materials Delrin, Viton, 316L stainless steel, Hastelloy, Titanium based PVD coating
Sampling Modes Linear, Event & User-Selectable with Repeat Mode, Future Start, Future Stop, Real-Time View
Measurement Rates 1/8 sec to 99 hrs
Barometric Compensation Software Wizard and one Barologger in local area (approx. 20 miles/30 km radius)