World of test and calibration
World of test and calibration
Features
A high-speed portable dew-point hygrometer for rapid spot-check measurements of dew point or moisture content in compressed air, natural gas, high voltage switchgear quench gas and many other applications. The sensor responds quickly to changes in moisture whether from dry to wet or wet to dry. This means there is no need to wait between measurements, allowing operators to make more measurements in a day.
The general purpose MDM300 is suitable for safe area use, while the intrinsically safe MDM300 I.S. has global hazardous area approval from ATEX, UKCA, IECEx, cQPSus and EAC Ex and is able to measure moisture in flammable gases such as natural gas or bio-gas.
It has a hard-wearing, ergonomic case and an easy-to-use interface for comfortable and practical operation in the toughest industrial environments.
MDM300 |
MDM300 Intrinsically safe |
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Performance Specifications | ||
Measurement Technology | Michell ceramic metal-oxide moisture sensor | |
Accuracy | ±1 °C (±1.8 °F) from -60 to +20 °C (-76...+68 °F) dew point ±0.2 °C (±0.36 °F) temperature |
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Calibrated Range | Spot Checks: -70...+20 °C (-94...+68 °F) dew point Online Analysis: -100...-70 °C (-148...-94 °F) dew point |
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Uncalibrated Readings From | +20...+30°C (+68...+86°F) dew point | |
Measurement Units | °C, °F, K dew point & gas temperature ppmV, ppmW for air, N2, 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 |
Electrical Specifications | ||
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 Specifications | ||
Operating Pressure | 35 MPa (350 barg / 5076 psig) max | |
Operating Environment | Outdoors 0...+100% rh condensing | |
Operating Temperature | -20...+50 °C (-4...+122 °F) | |
Storage/Transport Temperature | -20...+50 °C (-4...+122 °F) | |
Mechanical Specifications | ||
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...1.2 Nl/min | 0.2...0.5 Nl/min |
Gas Wetted Materials | AISI 316L stainless steel | AISI 316L stainless steel, PTFE Seal, Borosilicate glass, ceramic |
Outline Dimensions | 218 x 170 x 90 mm (8.58” x 6.69” x 3.54”) (d x w x h) | |
Weight | 1.35 kg (2.98 lb) | 1.5 kg (3.31 lb) |
General | ||
Data Logging | 8 megabytes; Log interval: 5...60 sec; Logs per log file: Up to 10,000 | |
Communications | (Wireless) BluetoothTM range up to 5 m (version 2.0) | |
User Interface Languages | English, French, German, Italian, Portuguese, Spanish | |
Certification codes | ||
CE UKCA |
ATEX/UKCA: II 1G Ex ia IIC T4 Ga (-20 °C...+50 °C) IECEx: Ex ia IIC T4 Ga (-20 °C...+50 °C) TR CU Ex: 0Ex ia IIC T4 Ga cQPSus: Class I, Division 1, Groups A B C D, T4 Class I, Zone 0, AEx/Ex ia IIC Ga T4 (-20 °C...+50 °C) |
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