Measurement Principle

The FCX-MP1000 sensor module is a complete solution for measuring oxygen levels within the 0~1000ppm range. The sensor and electronic equipment are connected via a circuit board.

The sensor is encapsulated within a pressure-tight flowing shell. Electronic components amplify the sensor signal.

Converts the sensor signal into a linear current output signal of 4-20mA according to IEC 60381.

Zirconia is permeable to oxygen ions at around 450°C. Therefore, the voltage applied to the sensor will pump oxygen out of the inner chamber.

At a constant gas pressure, the amount of oxygen pumped out equals the number of oxygen molecules diffusing in through the capillary.

Quantity, and within a certain range, it is independent of the voltage applied between the electrodes. The measured current is directly proportional to the number of oxygen molecules extracted.

The relationship between oxygen partial pressure and sensor current is:

IL = ([A]/1000) x [O2ppm]

Here:

IL: Sensor Current

At 1000ppm oxygen, sensor current (μA) O2: Oxygen concentration (volume ppmO2). The sensor module performs three tasks:

· Adjust sensor heating power

Amplify the microamp signal from the sensor

· Convert the amplified signal into a standardized current output signal

Sensors and modules are paired and calibrated at the factory. To achieve a temperature of 450°C for the sensors, the heating voltage must be customized and adjusted for each sensor.

So, the sensor cannot be directly replaced and is not compatible with other modules.

Warm-up time

The module requires approximately 5 minutes to warm up.

Environmental Conditions

·  No outdoor use permitted

·  Must be moisture-proof treated

· The sensor temperature is approximately 450°C. Always be aware of the hazards and risks associated with gas applications under any circumstances.

The sensor is suitable for operation in oxygen concentrations below 1000 ppm O2, and short-term exposure to atmospheric oxygen (20.9% vol O2) is acceptable.

However, continuous exposure to sensors in an environment with oxygen concentrations exceeding 1% vol O2 may slow down the sensor's response.Device response time, and limit the sensor's lifespan.