Follow the on-screen prompts to "Zero" the sensor in clean air.
Follow the wiring diagram for your specific output (4-20mA, HART, or optional Modbus/Fieldbus). Xnx Universal Transmitter Quick Start Guide
The XNX is designed to work with various sensor technologies, including: For toxic gases and Oxygen. Catalytic Bead: For flammable gases (LEL). Infrared (IR): For combustible gases and CO2. Follow the on-screen prompts to "Zero" the sensor
Apply the span gas when prompted. Once the reading stabilizes, the XNX will confirm a successful calibration. Xnx Universal Transmitter Quick Start Guide
Inhibit the output to prevent false alarms at the controller.