DewPro MMY31 Dew Point Transmitter

  • Planar Aluminum Oxide Sensor Corrosion resistant, low temperature coefficient, fast response
  • Optional Integrated Display With User Interface Provides full programming & diagnostic capability
  • Integral Flow Cell for Filtration & Flow Regulation Ideal for monitoring moisture content
Product Options


The DewPro MMY31 is designed to measure dew point or ppm on gases. This transmitter is cost effective and specifically used for in-inline installation where trace moisture measurement is required. The MMY31 mounts directly in the gas stream which is ideal for applications such as glove boxes, environmental chambers, test chambers and many other locations. The DewPro MMY31 has been made for easy installation due to a variety of adjustable insertion length compression fittings. Its planar aluminum oxide sensor provides excellent corrosion resistance, longer calibration stability, faster response times and an extremely low temperature coefficient.

Manufactured by: GE Panametrics
Model: DewPro MMY31 Dew Point Transmitter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Environmental chambers
Test chambers
Gloves boxes


Sensing Element Planar aluminum oxide sensor
Measurement Range -130°F to 50°F (-90°C to 10°C)
Calibration Accuracy ±3.6°F (±2°C) dew point at 77°F (25°C)
Element Filter 100 micron, sintered stainless steel
Standard Operating Temperature 0 to 1750 psig (0 to 120 bar, 12 MPa)
Helium Leak-Rate <10-6 mbar 1/s
Output 4 to 20 mA loop-powered
Electronics Microcontroller operated
Power Supply 24 VDC nominal, 12 to 30 VDC
Protection Type 4X/IP67
Weight 3.3lb (1.5kg)
Probe Tube 316 stainless steel, 1/2 in diameter, insertion length 2 in to 3.5 in