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YOKOGAWA MG8E Paramagnetic Oxygen Analyzer |
YOKOGAWA MG8E Paramagnetic Oxygen Analyzer
The MG8E paramagnetic oxygen analyzer measures the concentration of oxygen, employing a technique that is based on the fact that a magnet attracts gaseous oxygen. Whereas zirconia oxygen analyzers cannot measure oxygen in flammable gas mixtures, the MG8E can measure not only the oxygen concentration in flammable gas mixtures but also in low concentrations, with high precision.
With an appropriate sampling system it can also measure oxygen in high temperature or high pressure process gas mixtures.
The sensor has a totally new architecture for its magnetic proportional flow rate system that has been developed based on our long and field-proven experience. The converter is microprocessor based, providing ease of use and high reliability.
Features
The microprocessor-based converter provides improved system reliability, enhanced / useful functionality, and ease of use.
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Easy Operation with Large Display: Analog bar graph, large digital LED display, status indication |
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Compensation for Atmospheric Pressure Error |
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One-touch Calibration, Automatic Calibration for Labor-saving |
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Multiple Self-diagnosis Functions |
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The detector uses a magnetic proportional flow rate system, a world's first. This unique technology is based on our more than 30 years experience with paramagnetic oxygen analyzers.
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Reliable sensor: Long life, stable thermistor, 90% response within 3 seconds, minimum drift |
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Structure with No Movable Parts |
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Interference-gas Compensation Function: Excellent linearity and repeatability of ±1%F.S. |
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Stable Indications of Zero Point |
Specfications
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Measurement object |
Oxygen concentration in gaseous mixture |
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Measurement system |
Paramagnetic system |
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Measurement range |
0-1 to 0-25 vol%O2, 3 ranges are settable in 1%O2 units. |
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Analog output signal |
4 to 20 mA DC (load resistance: 550 Ω) |
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Contact output |
Error Contact
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1 point, normally energized, normally deenergized. (125 V AC 3 A, 30 V DC 3 A resistance load) |
Low Auxiliary Gas Pressure:
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3 points; 300 kPa (initial setting). Normally energized (125 V AC 3 A, 30 V DC 3 A) |
Maintenance:
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1 point, normally de-energized (125 V AC 3 A, 30 V DC 3 A resistance load) |
Range Selection Answerback Hi/Lo Alarm:
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2 points, normally de-energized (125 V AC 3 A, 30 V DC 3 A resistance load), one of which can be selected on program. | |
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Contact input |
2 points, remote range switching, autocalibration |
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Measurement Gas Condition |
Gas flow; 300 to 800 ml/min±10% of a set value
Gas pressure; Approx, 7 kPa in Analyzer inlet
Gas temperature; 0 to 50℃ |
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Auxiliary Gas |
N2 gas, Pressure; 350 to 500 kPa |
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Calibration |
Mathod;
Auto calibration, manual calibration (one-touch calibration) |
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Ambient temperature |
-5 to 50℃ |
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Installation |
Indoor, panel or wall mounting |
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Structure |
Flameproof (Exd II BT4X) |
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Power supply |
100, 110, 115 V AC ±10%, 50 or 60 Hz |
Performance
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Repeatability |
±1% F.S. |
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Linearity |
±1% F.S. |
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Response time |
90% response within 3 sec; measured by analog output signal change after gas is through the analyzer inlet. | |
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