Michell QMA601 Process Moisture Analyzer
Brand: Michell InstrumentsThe QMA601 Process Moisture Analyzer provides highly reliable, fast and accurate measurement of moisture content in a wide variety of carrier gases. It has a lower detection limit of 0.1 ppmV with reliable accuracy at sub-ppm trace moisture levels.
Using Michell’s latest developments in Quartz Crystal Microbalance technology the analyzer measures moisture levels effectively even in gases with changing background compositions. It is fully certified for use in hazardous areas.
The QMA601 requires only minimal routine maintenance to ensure low cost of ownership.
It features an intuitive ‘through the glass’ touch screen interface which is both easy to use and also means that the analyzer can be interrogated and configured without the need for a hot works permit.
QMA601 is suitable for use with natural gas containing up to 20% hydrogen with no further modification required.
Features- Fast and reliable measurement from 0.1 to 2,000 ppmv
- Accuracy of ±0.1 ppmV at <1 ppmV and 10% of reading from 1 to 2,000 ppmV
- Maintenance free for 3 years
- Built-in verification of customer process gas
- IECEx, ATEX, UKCA, TR CU Ex certified for Exd flameproof, cQPSus 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
Specifications
Brand
Accuracy
- ±10% of reading from 1 to 2,000 ppmV
- ±0.1 ppmV between 0.1 & 1 ppmV
Measurement Range
- 0.1 to 2,000 ppmV
Repeatability
- ±5% of the reading from 1 to 2,000 ppmV
- ±0.1 ppmV between 0.1 & 1 ppmV
Response Speed
- T63 < 2 mins to step change in either direction
- T95 < 5 mins to step change in either direction
Sensitivity
- 0.01 ppmV or 1% of reading, whichever is,greater,
Supply Voltage
- 85-264 VAC 47/63 Hz or 24 VDC (ATEX / IECEx / UKCA)
- 24 VDC only (cQPSus)
Analog Signal
- 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
Alarm
- 1 x system alarm, volt-free change-over (FORM C)
- 3 x process alarms, selectable for various parameters, volt-free changeover (FORM C)
Digital Communication
- RS485 Modbus RTU
- Modbus TCP
Approvals
- IECEx, ATEX, UKCA, TR CU, cQPSus
Local Interface
- 7” color LCD with intuitive HMI
Electrical Connection
- M20 entries for cable glands
Operating Condition
- Inlet Pressure 2 barg
- Outlet Pressure 1 barg
- Sample gas temperature: 0° to 100° C
- Operating temperature: -20° to 55° C
- Sample flow 300 ml/min total
Enclosure
- Lid & body: Cast copper-free aluminium LM25 (EN AC-42000), less than 0.6 magnesium
- Glass window: Heat resistant, explosion proof, polyester coated, IP66, NEMA 4
- Sample system: 316L stainless Steel
Analyzer Gas Connection
- 1/8” NPT
Weight
- 35 kg without sampling system
