Magnetic oxygen sensor Germany MD range 0-25%, output signal 4-20mA Model: XLCA-PAR

1. Principle

The magnetic oxygen sensor uses oxygen molecules to have strong paramagnetism in the magnetic field, which is an effective method to distinguish oxygen from other gas components in the sample gas. The magneto-oxygen sensor is composed of a pair of quartz glass dumbbell balls filled with nitrogen. A platinum wire surrounds the dumbbell ball to form an electrical feedback loop. The dumbbell ball hangs in the magnetic field and a small reflector is installed in the center. When there are oxygen molecules around the dumbbell, under the action of the magnetic field, the molecules will push the dumbbell ball to deflect. The higher the oxygen concentration, the greater the deflection angle. A precision optical system composed of a light source, a mirror and a photosensitive element will measure this deflection and convert it into an electrical signal. After the signal is amplified by the amplifier, a current loop is formed through the feedback circuit, and under the action of the magnetic field, the dumbbell is forced to return to its original equilibrium position. The current value in this loop is proportional to the oxygen concentration.

2. Technical parameters

2.1 Measuring range: 0-1% / 0-5% / 0-10% / 0-25% / 0-100% / 95-100% (according to requirements);

2.2 Signal output: 0-1V / 0-20mA / 4-20mA;

2.3 Response time T90: ≤2S;

2.4 Ambient temperature: 0-45 ℃;

2.5 Relative humidity: <90% (no condensation);

2.6 Linearity: <± 0.1% O2;

2.7 Zero drift: 0.05% O2 (one week);

2.8 Repeatability: <± 0.02% O2;

2.9 Power supply: 20-28VDC (70/500 mA);

2.10 Volume: 94mm (W) × 92mm (L) × 79mm (H);

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