Buyer’s Guide 2012 Update: Electrical/Electronic Components Oxygen-content sensor performs without calibration over long lifetime
The FCX-MCxx-CH sensor for oxygen measurement is a durable precision device that Pewatron has designed for low maintenance. The sensor offers a long operational life without requiring frequent recalibration.
Firma zum Thema
The measurement of oxygen in air can be carried out via several physical processes. FCX-MCxx-CH modules from Pewatron are zirconia solid-electrolyte sensors that operate on the current-limiting principle. Unlike conventional solid-electrolyte sensors, they do not require reference air. The advantage of their design consists in the simplicity of the method of measuring current oxygen content and the removal of necessity for yearly maintenance.
Other advantages of this sensor are the low operating temperature of the zirconia (400°C maximum) and power consumption of just 3 W for the entire module. Measurement ranges of 0 to 25% and 0 to 95% are available, with a precision of 0.1% O2 over the ambient-pressure range of –700 mbar to +4 bar.
The sensor may be mounted either directly on the PCB within a flow casing or via a cable as much as 5 m long. In the latter case, measurements may also be made when gas temperatures are as high as 300°C.
The sensor electronics offer flexibility: using a supply of 11.5 to 28 V DC, available models range from those delivering simple analogue and linear voltage or current output signals to versions connecting via the RS-232 or RS-485 interface or the I2C bus.
Typical uses for the FCX-MCxx-CH oxygen sensor include applications in the area of medical and biological systems, refrigeration technology, CO2 incubators and personal safety.
For further information: