QMA601-MON Process Moisture Analyzer

Advanced quartz crystal microbalance analyzer provides fast, high-precision moisture measurements for hazardous areas

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QMA601 MON Process Moisture Analyzer 05433

The next generation Advanced Quartz Crystal Microbalance analyzer from Michell Instruments is designed to provide reliable, fast and accurate measurement of trace moisture content in a wide variety of process applications where keeping moisture levels as low as possible is of critical importance.

• Fast and reliable measurement from 0.1 to 2000ppmV
• Accuracy of ±0.1ppmv at <1ppmv and 10% of reading from 1 to 2000ppmv
• Maintenance-free for 3 years
• Built-in verification of customer process gas
• IECEx, ATEX, TC-TR Ex certified for Exd flameproof, CSAus certified for explosion proof
• Intuitive, color HMI with touch-screen keypad; no ‘hot work’ permit required
• 14 internal alarms
• 21 predefined carrier gases and 3 user-defined gases
• Proven Michell Instruments quality: 40 years of expertise in moisture measurement built into the design

Measuring Technology	Fast Response Quartz Crystal Microbalance
Calibrated Range*	0.1 to 700ppmv
Measurement Range	0.1 to 2000ppmv
Accuracy	±10% of reading from 1 to 2000ppmv ±0.1ppmv between 0.1 & 1ppmv
Repeatability	±5% of the reading from 1 to 2000ppmv ±0.1ppmv between 0.1 & 1ppmv
Limit of Detection	0.1ppmv
Available Units	ppmv, ppmw, mg/Nm3, vapor pressure (Pa), dew point (°C/°F), lb/MMscf
Response Speed	T63 <2 mins to step change in either direction T95 <5 mins to step change in either direction
Automatic Calibration	Internal moisture generator source calibrated traceable to NPL & NIST
Sensitivity	0.01ppmv or 1% of reading, whichever is greater
Electrical Specifications
Supply Voltage	85 to 264 V AC, 47/63Hz or 24 V DC (ATEX / IECEx) 24 V DC only (CSAus)
Alarms	1 x system alarm, volt-free change-over (FORM C) 3 x process alarms, selectable for various parameters, volt-free changeover (FORM C)
Analog Signals	2 x 4–20 mA or 1–5 V (selectable) Maximum load resistance 500 Ω for 4–20 mA and minimum load of 1M Ω for 1–5 V
Digital Communications	RS485 ModBus RTU Modbus TCP
Data Logging	Available on analyzer (Limited number of values)or via Application Software
Local Interface	7” color LCD with intuitive HMI
Electrical Connections	M20 entries for cable glands
Operating Conditions
Inlet Pressure	3 barg
Outlet Pressure	2 barg
Sample Flow	300ml/min total flow
Sample Gas Temperature	0 to +100°C (+32 to +212°F)
Operating Environment	Analyzer only +5 to +45°C (+41 to +113°F) up to 90% RH Analyzer in sampling system –20 to +55°C (–4 to +131°F) up to 95% RH (fitted with heater/thermostat and/or enclosure cooling as appropriate to maintain +5 to +45°C (+41 to +113°F) internal temperature)
Mechanical Specifications
Type	GUB Flameproof Exd
Gas Connections	Lid & body: Cast copper-free aluminum LM25 (EN AC-42000), less than 0.6 magnesium Glass window: Heat resistant, explosion proof, polyester coated, IP66, NEMA 4
Weight	35kg without sampling system
Sample System Enclosure	316L stainless steel
Certifications
Hazardous Area Certification	ATEX II 2 GD Ex d IIB+H2 T6 Gb, Ex tb IIIC T85°C Db, Tamb -40°C to +60°C IECEx Ex d IIB+H2 T6 Gb, Ex tb IIIC T85°C Db, Tamb -40°C to +60°C CSAc Class I, ZONES, Ex d IIB+H2 T6 Gb, Tamb -20°C to +55°C CSAus Class I, Div 1, Group BCD T6, Tamb -25°C to +55°C TC-TR 1Ex d IIB+H2 T4 Gb X, 1Ex tb IIIC 130°C Db X and 1Ex d IIB+H2 T3 Gb X, 1Ex tb IIIC 195°C Db X