PST Zirconia O2 Sensors: What Interface Boards Can You Use?

Alternatively, if you would rather have a complete solution, the OXY-FLEX Series or OEM O2 Measurement Solution may better suit your needs. When choosing the option you require, you should consider the following;
1. O₂ measurement range: 0.1-25 % or 0.1-100 %
2. Output requirements: Digital (RS485 Modbus or RS232) or analogue (4-20mA or 0-10V_DC)
3. Location: cable length is important to maintain the correct sensor heater voltage and minimize noise pick up, PST recommends keeping the cable length between the sensor and interface board as short as possible.
4. Convenience: do you want an “off-the-shelf” solution or configure the equipment yourself? If you want to design the board yourself. Please refer to our Zirconia Sensor Software and Hardware Design Guide.

Types of Interface Boards

There a number of options available which enable you to power and control SST’s range of zirconium dioxide O2 sensors; interface board or a complete solution. The following gives a brief overview of each type of interface PCB.

OXY-LC Interface The OXY-LC Interface Board has a built-in pressure sensor for barometric pressure compensation and offers the following specifications.

O2I-Flex Interface The O2I-FLEX has externally triggered automatic or manual calibration. Calibration can also be initiated via an on-board push button switch. The O2I-FLEX offers the following specifications.

Complete OEM O2 Measurement Solution The Oxygen Measurement System has a built in pressure sensor for barometric pressure compensation and is used in combustion control including oil, gas and biomass boiler applications.

OXY-FLEX Series The OXY-FLEX has externally triggered automatic or manual calibration and has an IP66 rated housing. A compact and cost effective zirconium-dioxide transmitter to measure percentage level oxygen in combustion processes, excess air monitoring, bakery ovens and many more applications.

For more information on any of PST’s Zirconia O2 Sensors, interface electronics or complete oxygen sensing solutions, please contact us and to discuss your requirements.