Zirconium sensor modules with standard output signals

The FCX-ML series products are simple modules with a low-noise amplifier circuit that converts the µA signal from the sensor into a standard output signal in the range of 4-20 mA. In addition, the module has a high-precision built-in voltage and current control for the heating element. The FCX-ML module thus ensures a similar accuracy as the sensor element itself. The resolution depends on the sensor element or the gain, depending on the application. For example, the FCX-ML module in combination with an FCX-UC sensor provides very high resolution and accuracy at about 10-25% O2, whereas resolution is low at oxygen concentrations of less than 5%. On the other hand, the FCX-ML module in combination with an FCX-UL sensor provides high resolution and accuracy at 5000 ppm to 5% O2, but cannot provide an output signal in ambient air.

The FCX-ML series OEM modules feature an integrated sensor/flow housing on the PCB and tubing connections, allowing customers to easily install it in forced flow applications. Also standard is an FCX-ML module that has the oxygen sensor integrated into the circuit board, but does not have a flow housing. This module forms the basis for an oxygen transmitter, where the customer normally only has to provide a housing and the necessary wiring to be able to use the finished transmitter. Another popular product that is a standard part of Pewatron's range of OEM modules is a combination of plate and sensor connected by 30 cm of cable. The sensor itself is offered either as an independent element for custom installation or together with a flow housing for forced flow applications.