Portable Fast-Response Hygrometer
Simple to use and rugged, the MDM50 high-speed portable hygrometer is the ideal tool for a wide range of on-site maintenance spot checks. The robust integral sample system and fast-response polymer moisture sensor provide a quick, accurate moisture measurement in a broad range of dew-point applications.

Product Features

  • Rapid spot-check measurements to –60°C dew point
  • 16 hours operation between recharging
  • Sample at pressure or atmospheric
  • Accuracy +/-2°C dew point
  • Traceable 9-point calibration certificate
  • Rugged industrial design
  • Compact and simple to use
  • Sample connection kits
  • Response to -60°C dew point in 3 minutes

Technical Specification

Performance Specifications
Measurement Range -60 to +20 °C dew point
Accuracy ±2 °C dew point
Response Time T95 to -60 °C dew point in <3 minutes
Repeatability 0.5 °C dew point
Calibration 9-point calibration certificate traceable to national standards
Electrical Specifications
Output Signal User configurable over range; 4–20 mA (2-wire connection, current source)
Moisture Display/Output Dew point
Power Supply Rechargable NiMH battery pack with 16-hour life from full charge
Battery Charger Universal battery charger included
Electrical Safety EN61010-1
Operating Specifications
Operating Temperature -20 to +50°C
Compensated Temperature Range -20°C to +50°C
Storage Temperature -20°C to +60°C
Maximum Operating Pressure Low-pressure version (LP): 2 MPag (20 barg)
High-pressure version (HP): 10 MPag (100 barg)
Recommended Flow Rate 1 to 5 Nl/min
Sampling System Configuration Pressurized or atmospheric
Mechanical Specifications
Ingress Protection NEMA Type 6*
Display Type Flush mounted 3.5 digit red LED
Carry Case Yellow Peli propylene case with internal storage of charger, sample tube accessories and output connector
Weight 4kg
Sample Block Stainless steel, fully self-contained sample system with fixed orifice ports for flow control/pressure or atmospheric measurement and built-in filtration using a standard drop-in cartridge
Filter Cartridge Removes 99.5% of particles ≥0.3μm supplied with cartridge installed. Spare cartridges are available
Sample Connections Optional: Legris pneumatic fittings
6mm Swagelok® tube fittings
1/4” Swagelok® tube fittings
Sample tubing Low-pressure version (LP): 2m of 6mm O/D PTFE supplied
High-pressure version (HP): Metering valve and port adaptor
NOTES * NEMA Type 6 when case closed