Michell MDM50-HP Offers

Easy dew-point measurement

Features

• Rapid spot-check measurements to -76°F (-60°C) dew point
• 16 hours operation between recharging
• Sample at pressure or atmospheric
• Accuracy ±3.6°F (±2°C) dew point
• Traceable 9-point calibration certificate
• Rugged industrial design
• Compact and simple to use
• Sample connection kits
• Response to -76°F (-60°C) dew point in 3 minutes

Applications

• Compressed air
• Gas generators
• Railway pneumatics
• Plastic moulding dryers
• Additive manufacturing
• Instrument air

Fast and simple dew-point portable

The MDM50 hygrometer is to make dewpoint spot checks down to -76°F (-60°C) dew point as simply and fast as possible. This self-contained instrument weighs just 4kg (8.8 lb) and is delivered and ready to use. Connect your sample gas to the Quick Connect (or optional Swagelok®) fittings, turn on the instrument, and it will automatically begin to measure/display the dew point of the applied sample.

Extended field use

The MDM50 uses a rechargeable NiMH battery pack and is delivered complete with a universal battery charger that fits neatly into the instrument lid. It will operate for up to 16 hours on a full charge.

Fully integrated sampling system

The MDM50 is unique among portable hygrometers. Michell Instruments has built into the standard design, a complete sampling system that easily allows you to measure the dew point of any air or gas line, at up to 2 Mpa (20 barg/290 psig) pressure. The two interchangeable inlet/outlet fittings allow you to choose between a dew point measured at atmospheric or line pressure, by simply swapping the position of the fittings. An integrated filter housing uses standard filter cartridges and provides 99.5% protection against particles down to 0.3µm. Optionally, Swagelok tube couplings can be specified to allow the operation of the unit at up to 10 Mpa (100 barg/1450 psig).

Measurement performance

The portable uses a proven thick-film measurement technology coupled with the latest-generation sophisticated microcontroller electronics to provide accurate and stable measurement across -76 to 68°F (-60 to 20°C) dew points.

Field replaceable integral sensor

The advanced thick-film polymer moisture-sensing technology is coupled with the latest microprocessor-based measurement circuitry to produce a 9-point traceable calibrated and interchangeable sensor transmitter module. All calibration data is stored in the sensor memory, so on-site sensor exchange for calibration or service can be performed quickly, by untrained personnel.

Easy to read

The hygrometer features an extremely clear and bright 0.5" (127 mm) red LED display, making it easy to determine the dew point of your process even in dim conditions or direct sunlight. Michell also provides a 4 to 20 mA analog output for connection to a chart recorder, data logger, or computer system, so dew-point trends can be analyzed over time.

Rugged field-use design

The MDM50 is rugged and easy to carry and use. It is small, with an ergonomic carrying handle, and weighs only 8.8 lb (4 kg). The case of the hygrometer provides NEMA 6 protection and the outer case is covered by a lifetime guarantee, so can be returned to the factory for repair or replacement, free of charge.

Reproducibility and calibration integrity

The MDM50 thick-film polymer moisture sensors are subject to a 9-point calibration, where their performance is characterized against a fundamental reference hygrometer. This process, and subsequent quality testing, ensure that all sensors behave optimally before they are used in the field.

Traceable calibration

Each MDM50 is supplied with a calibration traceable to national standards (NPL and NIST) from Michell Instruments’ accredited laboratory.