Michell MDM300 Series Portable Dew-Point Hygrometer
Brand: Michell Instruments
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.
Features- Repeatedly fast measurements at low pressure from less than 15 minutes for T95 to -60° C (-76° F)
- Higher pressure measurements possible – up to 350 barg (5,076 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 1.5 kg (3.3 lb)
- 13-point traceable calibration certificate
Specifications
Brand
Accuracy
- ±1° C (±1.8° F) from (-60° to 20° C / -76° to 68° F) dew point
- ±2° C (±3.6° F) from (-100° to -60° C / -148° to -76° F) dew point
- ±0.2° C (±0.36° F) temperature
Calibrated Range
- Spot checks: -70° to +20° C (-94° to +68° F) dew point
- Online analysis: -100° to -70° C (-148° to -70° F) dew point
Resolution
- Display: 0.1 for all dew-point derived units and autoranging where appropriate
- Measurement: Better than 0.1° C (0.18° F) dew point
Battery
- NiMH 4.8V
- Up to 48 or 24 hours of typical usage between charges
Operating Pressure
- 350 barg (5,076 psig) max
Operating Temperature
- -20° to 50° C (-4° to 122° F)
Storage/Transport Temperature
- -20° to 50° C (-4° to 122° F)
Humidity
- Outdoors 0 to 100% RH condensing
Display
- Blue LCD graphical display
Enclosure Type
- Steel fiber-loaded high-impact polyamide 6
Gas Connection
- 1/8” NPT female
Gas Wetted Material
- AISI 316L stainless steel, PTFE Seal, Borosilicate glass, ceramic
IP/NEMA Rating
- IP66/NEMA 4
Data Logging
- 8 megabytes; Log interval: 5 to 60 sec; Logs per log file: Up to 10,000
Communication
- (Wireless) BluetoothTM range up to 5 m (version 2.0)
Approvals
- CE & UKCA
- ATEX/UKCA: II 1G Ex ia IIC T4 Ga (-20° to 50° C)
- IECEx: Ex ia IIC T4 Ga (-20° to 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° to 50° C)
Weight
- MDM300: 1.35 kg (2.98 lb)
- MDM300 I.S.: 1.5 kg (3.3 lb)
