The sensor output has drifted significantly below zero. Re-zero the unit in clean air.
Zero calibration, span calibration, and functional bump tests. Xnx Universal Transmitter Quick Start Guide
Unscrew the weather-proof cover using the supplied hex key tool. The sensor output has drifted significantly below zero
The following table provides quick guidance for resolving common faults. Refer to the full technical manual for complete diagnostic information. Unscrew the weather-proof cover using the supplied hex
| Symptom | Most Likely Fix | | :--- | :--- | | | Reverse polarity on V+ and V- (Check terminal 1 & 2) | | Reading stuck at 4 mA | Loop is open. Check wiring to PLC; jumper S to V- to test locally. | | "Sensor Missing" error | You forgot to remove the shorting plug from the sensor socket. | | Erratic reading (jumping ±10%) | Moisture inside the sensor head. Dry it with warm air; install a drip loop in the conduit. | | Modbus timeout | A and B wires are swapped. Swap Terminal 4 and 5. |
Remove the gas and exit the menu to return to monitoring mode. 6. Common Fault Codes Sensor missing or disconnected. F161: Calibration required or failed. W001: Warning that the unit is in "Inhibit" mode. Safety Warnings
The Xnx Universal Transmitter is a compact, multi-protocol wireless transmitter designed to send sensor, control, and telemetry data to receivers and hubs. This quick start guide gets you from unboxing to a validated live transmission, with practical tips and troubleshooting.
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