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DewPro MMR31 Moisture Transmitter

DewPro MMR31 Moisture Transmitter


The DewPro MMR 31 loop-powered mid-range moisture transmitter represents a simple, cost effective solution for mid-range moisture measurement. The MMR31 provides a wide range of process humidity measurements including relative humidity, dew point temperature, absolute humidity and mixing ratio. Whether looking to improve product economy, improve product quality, or maintain comfort levels, the MMR31's ability to measure these critical parameters provides an effective solution.

 

The DewPro MMY31 features proven polymer capacitive sensor technology for measurement over the entire range of 0 to 100% RH (±2% for 0 to 90% RH, ± 3% for 90% to 100% RH). An optional integrated display with user interface provides full programming and diagnostic capability. In addition, users can perform simple field calibration using salt solutions. A patented second isolated loop for temperature measurement is also available.

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Features

  • Simple loop-powered 4-20 mA connection
  • Proven polymer capacitive sensor for fast response and calibration stability
  • Trouble-free indoor or outdoor mounting
  • Simple field calibration using salt solutions
  • Micrcontroller in electronics Type 4X(IP67) enclosure
  • Optional integrated display with user interface
  • English or metric fittings

 

Applications

Applications include food processing, high temperature solids drying, paint and coating/finishing processes, pharmaceutical processing, and other industrial applications.

Specifications

Sensing Element Polymer; capacitance
RH Range 0 to 100%
RH Accuracy ±2% up to 150°F (65°C)
Temperature Sensor Platinum RTD
Temperature Accuracy ±2°F (±1.1°C)
Operating Temperature Range Process: 32°F to 300°F (0°C to 150°C)
Electronics: -40°F to 185°F (-40°C to 85°C)
Maximum Operating Pressure 150 psi (10.2 bar)
Electronics Microcontroller operated, loop-powered
Loop Power Supply 24 VDC nominal, 12 to 30 VDC range
Outputs temperature) patented (U.S. patent #5,677,476)
Hardware Selectable Units 0% to 100% RH, -40°F to 212°F or -40°C to 100°C dew point (up to 320°F or 150°C under system pressure), 0 to 1000 g/m3 absolute humidity, and 0 to 1000 g/kg mixing ratio dry air, wet buld temperature, volume %
Standard Temperature Output 32°F to 300°F (0°C to 150°C) range
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.
Optional Display Four-digit numeric display with bar graph and matrix
position indication. Four user interface keys for unit
selections, output adjustments and ranging.
European Compliance -Complies with EMC Directive 89/336/EEC and
PED 97/23/EC for DN<25
Optional Certification/Approvals • FM IS Class I,II,III, Division 1, Groups A,B,C,D,E,F&G, T4
• 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, T4
• ATEX II 3G EEx nA IIC T4

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Descriptions English Deutsch Italiano Português
DewPro MMR31 Brochure acrobat-reader acrobat-reader acrobat-reader
DewPro MMR31 Operating Manual acrobat-reader
DewPro MMY31 Dew Point Transmitter Brochure acrobat-reader acrobat-reader acrobat-reader


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