DewPro MMY30 Dew Point Transmitter

  • Planar Aluminum Oxide Sensor Corrosion resistance, calibration stability, fast response
  • Integral Filtering & Flow Regulation Ideal for monitoring moisture content
  • Optional Integrated Display with User Interface Provides full programming & diagnostic capability
Product Options


The DewPro MMY30 is a loop-powered transmitter with 4 to 20 mA output. The DewPro MMY30 is specifically designed to measure dew point or ppm in gases at line pressure or atmospheric pressure. The planar aluminum oxide sensor provides excellent corrosion resistance, longer calibration stability, quick response times, and an exceptionally low temperature coefficient. The optional integrated display with user interface provides full programming and diagnostic capability.

The DewPro MMY30 features an integral flow cell for filtration and flow regulation making it ideal for monitoring the moisture content in various process environments. Several options are available for the process connection allowing easy installation of the transmitter.

Manufactured by: Panametrics
Model: DewPro MMY30 Dew Point Transmitter

Services offered for this product

  • Sales
  • Rental
  • Installation
  • Calibration
  • Maintenance


Desiccant air dryers
Pipeline natural gas
Industrial gases


Sensing element Planar aluminum oxide sensor
Measurement range -130°F to 50°F (-90°C to 10°C) dew point temperature; 0 to 10, 0 to 100, 0 to 1000 ppmv (fully adjustable with integral display)
Recommended recalibration cycle 12 months, depending on the application
Calibration accuracy ±3.6°F (±2°C) dew point at 77°F (25°C)
Maximum sensor relative humidity 50% at dew point temperature > 32°F (0°C)
Operating temperature range Process: -40°F to 122°F (-40°C to 50°C)
Electronics: -40°F to 185°F (-40°C to 85°C)
Air bleed off at 100 psig (7 bar) Approximately 1 SCFH (28 sl/h)
Maximum operating pressure 450 psig (31 bar, 3.1 MPa)
Inlet filter: 2 micron sintered stainless steel
Helium leak-rate <10-6 mbar 1/s
Output 4 to 20 mA loop-powed, 16 :A resolution
Flow block 316 stainless steel with 1/2 in MNPT or G 1/2 thread (DIN ISO 228)
Wrench width for flow block 1-5/8 in (42 mm)
Electronics Microcontroller operated
Optional display Four-digit numeric display with bar graph and matrix position indication. Four user interface keys for unit selections, output adjustments and ranging.
Power supply 24 VDC nominal, 12 to 30 VDC range
Protection Type 4X/IP67
Weight 4.4 lb (2 kg)
European compliance Complies with EMC Directive 89/336/EEC and PED 97/23/EC for DN<25
Optional certifications/approvals
  • FM IS Class I,II,III, Division 1, Groups A,B,C,D,E,F&G, T5
  • FM XP-IS Class I, Division 1, Groups A,B,C&D, T5
  • FM NI Class I, Division 2, Groups A,B,C&D, T4A DIP Class II,III, Division 1, Groups E,F&G, T5
  • ATEX II 3G EEx nA IIC T4