MG8E Paramagnetic Oxygen Analyzer

Model MG8E
Paramagnetic Oxygen Analyzer (Explosionproof Type)

Product Information

Paramagnetic Oxygen Analyzer (Explosionproof Type) Model MG8E

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.

Bulletin for MG8E

General Specification for MG8E

User's Manual for MG8E

Selection Guide for Oxygen Analyzer

Features

The microprocessor-based converter provides improved system reliability, enhanced / useful functionality, and ease of use.

*	Easy Operation with Large Display: Analog bar graph, large digital LED display, status indication
*	Compensation for Atmospheric Pressure Error
*	One-touch Calibration, Automatic Calibration for Labor-saving
*	Multiple Self-diagnosis Functions

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.

*	Reliable sensor: Long life, stable thermistor, 90% response within 3 seconds, minimum drift
*	Structure with No Movable Parts
*	Interference-gas Compensation Function: Excellent linearity and repeatability of ±1%F.S.
*	Stable Indications of Zero Point

Specfications

Measurement object

Oxygen concentration in gaseous mixture

Measurement system

Paramagnetic system

Measurement range

0-1 to 0-25 vol%O₂, 3 ranges are settable in 1%O₂ units.

Analog output signal

4 to 20 mA DC (load resistance: 550 Ω)

Contact output

Error Contact

1 point, normally energized, normally deenergized. (125 V AC 3 A, 30 V DC 3 A resistance load)

Low Auxiliary Gas Pressure:

3 points; 300 kPa (initial setting). Normally energized (125 V AC 3 A, 30 V DC 3 A)

Maintenance:

1 point, normally de-energized (125 V AC 3 A, 30 V DC 3 A resistance load)

Range Selection Answerback Hi/Lo Alarm:

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.

Contact input

2 points, remote range switching, autocalibration

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℃

Auxiliary Gas

N2 gas, Pressure; 350 to 500 kPa

Calibration

Mathod;
Auto calibration, manual calibration (one-touch calibration)

Ambient temperature

-5 to 50℃

Installation

Indoor, panel or wall mounting

Structure

Flameproof (Exd II BT4X)

Power supply

100, 110, 115 V AC ±10%, 50 or 60 Hz

Performance

Repeatability	±1% F.S.
Linearity	±1% F.S.
Response time	90% response within 3 sec; measured by analog output signal change after gas is through the analyzer inlet.