MDM300 & MDM300 I.S. High Speed Dewpoint Hygrometer


MDM300 Sampling Options
A high-speed portable dew-point hygrometer, 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. This lightweight, ATEX, IECEx, FM, CSA, GOST and INMETRO certified product allows more measurements per working hour than any other comparable product. A hard-wearing but ergonomic case and an easy-to-use interface allows comfortable operation in the toughest industrial environments.





Product Features

  • Repeatedly fast measurements at low pressure in less than 15 minutes for T95 down to -60°C dew point (-76°F dew point)
  • Higher pressure measurements possible – up to 35 MPa (350 barg / 5076 psig)
  • Long battery life: up to 48 hours of typical use between charges
  • Intuitive application kits allow quick and straightforward connection to your sample point
  • Durable, yet easy to handle and operate: designed for use in industrial environments
  • Lightweight: less than 1.5kg (3.31 lbs)
  • 13 point traceable calibration certificate
    MDM300



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    Technical Specification
    MDM300

    MDM300 Intrinsically Safe
    Performance
    Measurement Technology Michell ceramic sensor
    Accuracy ±1°C from -60 to +20°C (±1.8°F from -76 to +68°F) dew point
    ±2°C from -100 to -60°C (±3.6°F from -148 to -76°F) dew point
    ±0.2°C temperature (0.36°F)
    Calibrated Range Spot Checks: -70 to +20°C (-94 to +68°F) dew point
    Online Analysis: -100 to -70°C (-148 to -94°F) dew point
    Uncalibrated Readings From +20 to +30°C (+68 to +86°F) dew point
    Measurement Units °C, °F, K dew point & gas temperature ppmV,
    ppmW for air, N2, H2, CO2, SF6
    %RH, g/m3, g/kg
    °C, °F, K dew point & gas temperature
    ppmw & g/kg for air, N2, H2, CO2, SF6
    ppmv, lb/MMscf & g/m3 for natural gas
    ppmv, g/m3 & %RH
    Resolution (Display) 0.1 for all dew-point derived units and autoranging where appropriate
    Resolution (Measurement) Better than 0.1°C (0.18°F) dew point
    Typical Response Speed T95 in ≤15 minutes to -60°C (-76°F) dew point T95 in ≤30 minutes to -60°C (-76°F) dew point
    Measurement System Repeatability Better than 0.1°C (0.18°F) dew point
    Measurement System Hysteresis ±0.05°C (0.09°F) dew point
    Electrical Input/Output
    Battery Type NiMH 4.8V
    Battery Operating Life Up to 48 hours of typical usage between charges Up to 24 hours of typical usage between charges
    Battery Charger Intelligent charger (supplied) Intelligent charger (not certified for hazardous area use)
    Operating Conditions
    Operating Pressure 35 MPa (350 barg / 5076 psig) max (Please consult your Michell Sales Engineer for advice on operating at pressure exceeding 15 MPa (150 barg / 2175 psig)
    Operating Environment Outdoors 0 to +100% RH condensing
    Operating Temperature -20 to +50°C (-4 to +122°F)
    Storage/Transport Temperature -20 to +50°C (-4 to +122°F)
    Mechanical Specification
    Display Blue LCD graphical display
    Enclosure Type Steel fiber-loaded high-impact polyamide 6
    IP/NEMA Rating IP66/NEMA 4
    Gas Connections 1/8” NPT female (other options available)
    Flow Across Sensor 0.2 to 1.2 Nl/min (0.42 to 2.54 scfh) 0.2 to 0.5 Nl/min (0.42 to 1.05 scfh)
    Gas Wetted Materials AISI 316L stainless steel AISI 316L stainless steel, PTFE Seal, Borosilicate glass, ceramic
    Outline Dimensions 218 x 170 x 90mm (8.6 x 6.7 x 3.5") (d x w x h)
    Weight 1.35kg (2.98lbs) 1.5kg (3.31lbs)
    General
    Data Logging 8 megabytes; Log interval: 5 to 60 sec; Logs per log file: Up to 10,000
    Communications (Wireless) BluetoothTM range up to 5m (16.4’) (version 2.0)
    User Interface Languages English, French, German, Italian, Portuguese, Spanish
    Certification Codes
      CE
    ATEX: II 1G Ex ia IIC T4 Ga (-20°C to +50°C)

    IECEx: Ex ia IIC T4 Ga (-20°C to +50°C)

    INMETRO: Ex ia IIC T4 Ga (-20°C to +50°C)

    TC TR Ex: 0Ex ia IIC T4 Ga

    FM: Class I, Division 1, Groups A B C D, T4

    CSA: Class I, Division 1, Groups A B C D, T4

    Accessories

    MDM300 Sampling Options MDM300 Sampling Options
    To get the best possible performance from your MDM300 or MDM300 I.S., it is crucial to have appropriate sample conditioning for your measurement point.

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