Michell Instruments

MDM50 Portable Hygrometer

Self-contained instrument weighs only 4kg, rapid spot-check measurements to –50°C dp, T95 to –35°C dew point in <10 minutes

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The MDM50 Hygrometer has been designed to make high-speed spot checks of the dew point in air and gases to -50°C dew point as simple as possible. This completely self-contained instrument weighs only 4kg and is delivered ready to use. Simply connect your sample gas to the Quick Connect fittings, turn on the instrument, and it will automatically begin to measure the dew point of the applied sample.

• Rapid spot-check measurements to –50°Cdp
• T95 to –35°C dew point in <10 minutes
• Simple operation
• Integral sampling system
• Industrial case
• ±2°Cdp accuracy
• 9-point traceable calibration
• 16 hours of operation between charges

Measurement Technology Polymer Capacitive
Measurement Range –50 to +20°Cdp
Accuracy ±2°Cdp
Run Time 12-16 hours
Charge Time 16 hours for maximum charge
Electrical Input/Output
Output 4–20 mA current maximum load resistance 400 Ω
Power Supply Rechargeable NiMH battery pack, charger included
Operating Conditions
Operating Temperature -20 to +50°C
Storage Temperature -40 to +75°C
Operating Pressure Low pressure version: Up to 2 MPa (20 barg / 290 psig)
High pressure version: Up to 30 MPa (300 barg / 4350 psig)
Mechanical Specifications
Display Flush mounted 3.5 digit red LED
Case Yellow propylene with charger, sample tubing and output connector stored in the lid
Weight 4kg total weight
Enclosure Rating Case closed: NEMA Type 6
Sample Connections Optional: Legris pneumatic fittings
6mm Swagelok® tube fittings
1/4” Swagelok® tube fittings
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 (part no: SSF-PF-10PK)
Sample Tubing Low pressure version: 2m of 6mm O/D PTFE supplied
High pressure version: Metering valve and port adaptor
Replacement battery pack
Normally ships in 4-6 Weeks
$204.00 CAD
Pack of 10 replacement HDPE guards for protection against fine particulates <10µm
Normally ships in 2-3 Weeks
$322.00 CAD
Pack of 10 particulate filter cartridges for protection against fine particulates < 0.1µm for 5/8" sampler kits
Normally ships in 2-3 Weeks
$202.00 CAD
PTFE sample tube 6mm (0.24") O/D thick-walled for Sampler Kit
Normally ships in 4-6 Weeks
Starting At
$5.00 CAD