Even with a perfect guide, problems occur. Here is how to solve the top three:
The XNX features an onboard diagnostic system that outputs distinct error codes on the LCD screen to assist in rapid troubleshooting. Error Code Description Corrective Action Sensor Fault Sensor cartridge missing or disconnected. Power down, verify sensor seating, and restart. F112 Over-Range Gas concentration exceeded scale limit. Verify area safety; check for high residual gas. W001 Calibration Due Pre-set calibration interval expired. Schedule and perform zero and span calibration. W005 Low Supply Voltage Input voltage has dropped below 16V DC. Check the power supply and cable run lengths. F160 Loop Fault The 4-24mA current loop is open or shorted. Inspect signal wiring connection at Terminal 3. Technical Specifications Summary Input Voltage: 16–32V DC (24V DC Nominal)
If an issue occurs during setup, the display will show a fault code accompanied by a yellow LED. Xnx Universal Transmitter Quick Start Guide
4–24mA (Sink/Source), Optional RS-485 Modbus, Foundation Fieldbus Relay Outputs (Optional): 3 x SPDT Form C (5A at 250V AC)
: Attach the calibration span gas cylinder via a flow regulator. Even with a perfect guide, problems occur
Navigate to the and select Zero Calibration .
: Ensure unused conduit entries are sealed with certified, explosion-proof blanking plugs. Pipe and Wall Mounting Power down, verify sensor seating, and restart
Navigate to to set the trip points for Alarm 1 and Alarm 2, as well as their behavior (latching/non-latching, energised/de-energised). First-Time Calibration
: Confirm that the transmitter labels match the hazardous area rating of the installation site.
: You need a 2.5mm hex key and a flathead screwdriver.
: Tighten the cover until the O-ring seals completely. Apply Power : Turn on the 24 VDC supply line.