Self-Calibrating Trace Moisture Analyzer - Michell QMA401

Self-Calibrating Trace Moisture Analyzer - Michell QMA401

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Features

Precision measurement from 0.1 to 2000ppmV
Fast response in both dry to wet and wet to dry transitions
Simple, low cost, on-site maintenance with long service intervals
Dryer can be replaced by the user in 10 minutes
Accuracy of 0.1ppmV or 10% of reading, whichever is greater
Intuitive user interface
Ethernet or USB digital communications
SD card data logging
Optional internal sample handling and bypass loop.

Suitable for use with natural gas containing up to 20% hydrogen with no further modification required.

Delivery policy Delivery time in Lithuania 1-2 working days, to other EU countries 3-5 w.d. to other non-EU 5-9 w.d.
Return policy Order could be returned in 15 days.

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 variety of applications where keeping moisture to a minimum is of critical importance.

The analyzer provides consistently accurate measurements of trace moisture. This consistency is achieved using a self-calibration system, which adjusts the sensor with reference to an internal moisture generator. The moisture generator is supplied with a calibration traceable to NPL and NIST, so long term stability of its measurements is guaranteed.

Performance
Measuring technology	Fast Response Quartz Crystal Microbalance
Calibrated range*	0.1 ... 700 ppmV
Measurement range	0.1 ... 2000 ppmV
Accuracy	±10% of reading from 1 to 2000 ppmV 0.1 ppmV between 0.1 and 1 ppmV
Repeatability	±5% of reading from 1 to 2000 ppmV ±0.1 ppmV between 0.1 and 1 ppmV
Limit of detection	0.1 ppmV
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 and NIST
Sensitivity	0.01 ppmV or 1% of reading, whichever is greater
Electrical Specifications
Supply voltage	85 ... 264 V AC, 47/63Hz
Max power consumption	150 VA
Alarms	1 x System alarm, volt-free change-over FORM C) 3 x process alarms, selectable for various parameters, volt free changeover (FORM C)
Communications	Analog Outputs: 2 channels, user selectable 4 ... 20 mA or 1 ... 5 V Digital Communications: RS485/USB Modbus RTU, Ethernet Modbus TCP
Data logging	Direct logging to SD card or PC via application software
Local interface	7” color touch screen LCD
Operating Conditions
Inlet pressure	User-controlled to 1 barg With optional inlet pressure regulator: 300 barg max
Outlet pressure	Atmospheric
Sample flow requirement	300ml/min total flow without bypass
Sample gas temperature	0 ... +100 °C
Operating environment	+5 ... +45 °C up to 90 % rh
Mechanical Specifications
Enclosure	19” Rackmount, 4U x 434mm
Gas connections	1/4” VCR(M)
Weight	13.5 kg