Michell Instruments' MDM300 High-speed dew point hygrometer is lightweight and portable, offering rapid spot-check measurements of dew point or moisture content in many applications, including compressed air, natural gas and high voltage switchgear quench gas. A hard-wearing but ergonomic case and an easy-to-use interface allows comfortable operation in the toughest industrial environments .

The MDM300 delivers repeatedly fast measurements with T95 response times of less than 15 minutes down to -70°C dew point. It features long battery life of more than 48 hours between charges, best-in-class accuracy of ±1°C dew point, and an external 4-20mA device input for dew point, temperature, or pressure transmitters. Bluetooth connection enables trouble-free download of data. The instrument includes a built-in sampling system rated to 4500 psi with external options to 6000 psi .

The MDM300 uses Michell's highly developed ceramic impedance sensor, constructed using state-of-the-art thin and thick film techniques. The sensor responds rapidly to changes in moisture, giving ±1°C dew point accuracy coupled with excellent long-term reliability and stability .

Key Features

• Measurement range: -100 to 20°C (-148 to 68°F)
• Accuracy: ±1°C from -60 to 20°C, ±2°C below -60°C
• Rapid response: T95 ≤15 minutes
• High pressure capability: 35 MPa (350 barg / 5076 psig)
• Long battery life: 48 hours typical
• Lightweight: 2.98 lbs (1.35 kg)
• External 4-20mA device input
• Bluetooth connection for data download
• Built-in sampling system to 4500 psi
• IP66 and NEMA 4 rated
• 13-point traceable calibration certificate

Applications

• Compressed air systems
• Natural gas moisture spot-checking
• High voltage switchgear quench gas
• Industrial gas quality assurance
• Dryer performance validation