MDM300 I.S. Advanced Portable Dew-Point Meter

The MDM300 I.S. is an advanced portable dew-point meter designed for fast, reliable on-site spot-check measurements of dew point and moisture content across a wide range of industrial applications. Built with Michell's proprietary ceramic impedance sensor technology, it delivers exceptional accuracy, fast response times, and rugged durability for demanding field conditions.

Key Features

• Wide Measurement Range: -100 to +20 °Cdp calibrated range with readings up to +30 °Cdp
• High Accuracy: ±1 °Cdp (-60 to +20 °C), ±2 °Cdp (-100 to -60 °C)
• Fast Response: T95 < 12 minutes to -70 °Cdp (I.S. model) with zero-wait between measurements
• Global Hazardous Area Certifications: ATEX II 1 G Ex ia IIC T4, IECEx, FM, CSA, GOST-R, GOST-K
• Long Battery Life: Up to 48 hours on standard model, 24 hours on I.S. model
• High Pressure Rating: Up to 35 MPa (350 barg)
• Rugged & Portable: High-density composite fiber housing, IP66/NEMA 4 rated, weighs only 1.5 kg
• Traceable Calibration: 13-point calibration certificate over 10 days, traceable to NPL (UK) and NIST (US)
• 4-20 mA Auxiliary Input: Connect external dew-point, temperature, or pressure sensors for real-time compensation
• Data Logging: 8 MB memory, 5-60 second intervals, up to 10,000 data points per file
• Bluetooth Communication: Wireless data transfer up to 5m range

Applications

• Natural gas processing and pipeline transmission dew point checks
• Compressed air and injection molding dryer monitoring
• High-voltage switchgear SF6 gas moisture measurement
• Petrochemical process humidity verification
• Industrial gas production and transport quality assurance
• Medical gas quality compliance
• Metallurgical furnace atmosphere dew point measurement

Hazardous Area Ready

The MDM300 I.S. is certified for use in hazardous areas with ATEX, IECEx, FM, CSA, and GOST approvals. A junction box is included for connecting to Michell Easidew TX I.S. or Easidew PRO I.S. transmitters for calibration verification without process shutdown. The standard MDM300 is also available for non-hazardous applications.

Diverse Sampling Options

The MDM300 supports a wide range of sampling configurations from simple low-pressure fixed-orifice setups to fully configurable high-pressure systems rated to 350 barg. Application-specific sampling kits available for compressed air, medical gases, SF6 switchgear gas, and natural gas.

Technical Specifications