XNX 3/4in Thread Type Gas Detector - Honeywell Building Automation

| | Cons | | :--- | :--- | | Versatility: The XNX base can be repurposed for different sensors if site requirements change. | Cost: It is significantly more expensive than basic 2-wire loop-powered transmitters. | | Poison Resistance: The IR sensor will not die from silicone or sulfur poisons, unlike catalytic beads. | Complexity: The menu system is deep. Untrained personnel can easily get lost in the configuration settings. | | No Oxygen Required: Works in inerted tanks and nitrogen atmospheres. | Physical Size: The "Top" mount IR sensor makes the unit quite tall and heavy, which can be tricky in tight spaces. | | Diagnostics: Excellent self-monitoring capabilities reduce false alarms. | Accessories: Requires a specific calibration adapter (cups) for the 4-Series sensor, which can be bulky. |

: Sensor recognition software automatically configures the transmitter upon sensor connection. Operational Specifications

He decided to bypass the methane sensor and focus on the primary threat: the toxic gases from the geothermal vents below. He reconfigured the transmitter logic via the tablet, telling the XNX to ignore the broken methane input and focus on the electrochemical cell reading for H2S.