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Dewpoint – Hygrometers – Analyzers

Veronics Instruments Inc. represents the Panametrics line of reliable Hygrometers and Moisture Meters with a combination of features to meet your needs and budget. Learn more about the following products:


Part of the IQ Series of moisture and oxygen analyzers from Panametrics, the moisture.IQ is a multichannel, multifunction analyzer used wherever moisture impacts the quality, efficiency, or performance of a product or process. The new touchscreen display and graphics-based interface allow for easy at-a-glance viewing. The built-in auxiliary inputs allow you to add two additional transmitters and an oxygen measurement to each available channel-making it the most versatile moisture analyzer on the market.

  • Multichannel transmitter all in one box
  • Combines the technology of the MIS-1 and the MMS-3 into one core product
  • Real-time clock and data logging for enhanced monitoring and troubleshooting
  • Easily upgrade your current Panametrics hygrometer
  • The global reach and local support of GE

This multichannel analyzer measures moisture in gases and non-aqueous liquids and oxygen (optional) in gases. Designed for permanent installations, it is used in conjunction with Moisture Image Series, TF and M Series moisture probes for industries including:

  • Petrochemical
  • Natural gas
  • Industrial gas
  • Semiconductor
  • Furnace gas/heat treating
  • Power generation
  • Air dryer
  • Pharmaceutical
  • Aerospace

Aurora TDLAS Hygrometer

Panametrics Aurora analyzer uses tunable diode laser absorption spectroscopy (TDLAS) to measure moisture in natural gas rapidly and accurately. The analyzer is suitable for installation in hazardous areas and operates over a wide range of environmental conditions. Aurora’s fast response quickly alerts and documents when moisture concentrations are out of compliance. Once process upsets are corrected and the gas dries out, the fast response enables natural gas to be cleared for entry into the “energy grid.”

Panametrics experience in moisture measurement includes aluminum oxide, polymer capacitance and chilled mirror sensors. Panametrics heritage also includes the development of the first injection diode laser in 1962 by Dr. Robert Hall in Schenectady, NY. The compact and inexpensive diode laser made it possible for compact discs, laser printers and fiber optic telecommunications. The new Aurora TDLAS hygrometer enables natural gas processing and transportation facilities to monitor moisture content in real time with high precision and reliability.


Analyzer 100-240 VAC, 50-60 Hz, 10 W
18-32 VDC (24 VDC nominal), 10 W
Optional Electrical Heater 120 VAC, 120 W
230 VAC, 75 W


Parts Per Million by Volume 5 to 5000 ppm
Dew/Frost Point1 -65.5° to -2.6°C frost point-85.9° to 27.3°F frost point
Process Dew/Frost Point1 Process or equivalent dew point/frost point by calculation with process pressure signal (4-20 mA) or constant
Absolute Humidity 3.8 to 3,803 mg/m3
Absolute Humidity 0.24 to 237 lbs/MMSCF
1 Readings below 0°C (32°F) are in “frost point,” temperature and above 0°C (32°F) are in “dew point” temperature.


Parts Per Million by Volume ±2% of reading or 4 ppmv
(Accuracy of other parameters derived from ppmv.)

Response Time

Optical Response <2 seconds
System Response The system response is dependent on the length of sample tubing, sample system components, flow rate and pressure, as well as the change in moisture concentration.

Operating Pressure

Operating Sample Cell Pressure 69 to 172 Kpa (10-25 psia)
Maximum Pressure 1380 KPa (200 psi)
Process Pressure 10,342 KPa (1500 psig) maximum2
2 Higher pressure available with application of additional sampling system components.


Operating -20 to 65°C (-4 to 149°F)
Storage -20 to 70°C (-4 to 158°F)
Optional Heater/Thermostat Set Point 25°C (77°F)


Sample Cell Flowrate 10 to 60 SLH (0.4 to 2 SCFH ); 30 SLH (1 SCFH) nominal
Coalescer By-pass Fast Loop 5 to 10X of flowrate through sample cell


Backlit LCD. Three programable simultaneous parameters. Alphanumeric status and diagnostic display. LEDs for power, laser temperature stability, keypad lockout.


Analog Outputs Three programmable 0/4-20 mA; 500 Ohm max load.
Analog Input Loop powered 4-20 mA input for remote pressure transmitter. Aurora supplies 24 VDC.
Digital Interface Two programmable digital communications ports RS232, RS485 with multidrop capability and assignable address, Modbus RTU protocol


Ingress Protection IP-66


Class 1 product. Conforms to IEC 60825-1. Edition 2.0 Safety of Laser Products

User Interface

Programmable “through-the-glass“ via magnetic stylus

Net Weight

37 Kg (100 lb)

Hazardous Area Certification

USA/Canada Explosion-proof for Class I, Division 1, Groups C&D
EU and Elsewhere ATEX and IEC Ex:
Ex de IIB T6 -20°C to +65°C
Flameproof with increased safety compartment


CE Complies with EMC Directive 2004/108/EC, Low Voltage Directive 2006/95/EC and Pressure Directive 97/25/EC for DN/25

Recommended Factory Verification/Service

Five years

Moisture monitoring in oil & gas and transportation facilities.

MTS6 Panel Mount OEM hygrometer

The MTS6 Panel Mount OEM hygrometer  with analog output and alarms.

Series 6 Specifications

  • Moisture Measurement
  • Sensor Type: Thin-film aluminum oxide
  • Moisture Probe Compatibility: Compatible with all GE M Series aluminum oxide moisture probes and VeriDri transmitters

Dew/Frost Point Temperature

  • Overall range capability: 140°F to –166°F (60°C to –110°C)
  • Standard 68°F to –112°F (20°C to –80°C) with data to -166°F (–110°C)
  • Extended 140°F to –85°F (60°C to –80°C) with data to 166°F (–110°C)

VeriDri ranges include:

  • –110°C to 20°C
  • –110°C to –50°C
  • –90°C to 10°C
  • –80°C to –30°C
  • –80°C to 20°C
  • –30°C to 20°C
  • –130°F to 70°F
  • –130°F to –40°F
  • –40°F to 70°F
  • –50°F to 50°F
  • –100°F to 0°F

Calibrated Accuracy at 77°F (25°C)

  • ±3.6°F (±2°C) from –85°F to 50°F (–65°C to 10°C)
  • ±5.4°F (±3°C) from –112°F to –86°F (–80°C to –66°C)


  • ±0.9°F (±0.5°C) from –85°F to 50°F (–65°C to 10°C) dew/frost point
  • ±1.8°F (±1.0°C) from –112°F to –86°F (–80°C to –66°C) dew/frost point

This single-channel analyzer measures moisture in compressed air and gases. Designed for permanent installations, it is used in conjunction with M Series moisture probe or VeriDri moisture transmitter for air/gas dryer original equipment manufacturer (OEM) applications:

  • Regenerative desiccant air or gas dryers
  • Plastic drying applications prior to injection/blowmolding
  • Medical air dryers
  • Glove box monitoring