The most striking feature of the XNX is right in the name: Universal . In the past, if a facility used an electrochemical sensor for Hydrogen Sulfide (H2S) and an infrared sensor for combustible gases (LEL), they needed two entirely different transmitter architectures, two sets of spare parts, and two different training manuals.
The Xnx Universal Transmitter is designed to provide accurate and reliable measurements in a wide range of applications. Here are some general guidelines for operating the device:
Connect to the analog input channel of your controller. Terminal 3 (V-): Connect to the common DC return/ground. Relay Option Board (If Equipped)
The Honeywell XNX Universal Transmitter is a highly versatile platform that supports electrochemical, infrared, and catalytic bead gas detectors. This comprehensive guide provides the essential technical steps required to safely install, wire, and configure the XNX transmitter for field operations. Safety and Pre-Installation Requirements Xnx Universal Transmitter Quick Start Guide
Wait for the reading to stabilize, then swipe to accept the zero point. Step 2: Span Calibration
| Parameter | Specification | |-----------|---------------| | | 24 V DC (sensor dependent) | | Operating Temperature | -40°C to +65°C / -40°F to +150°F (sensor dependent) | | Humidity | 20 to 90% RH (non‑condensing) | | Enclosure Rating | IP66 / NEMA 4X | | Enclosure Materials | LM25 aluminum (painted) or SS316 stainless steel (painted optional) | | Cable Entries | 5 x M25 or ¾” NPT | | Outputs | 4‑20 mA with HART (standard); optional Modbus, Foundation Fieldbus, 3 relays | | Dimensions | 160 × 197 × 114 mm | | Approvals | ATEX, IECEx, UL, CSA, FM, DEMKO, DEKRA, InMetro, TÜV, ABS, GOST, KTL, SIL 2 |
The Xnx Universal Transmitter Quick Start Guide succeeds at its primary mission: getting the device installed and operational in under 15 minutes for a trained technician. It is well-structured, safety-conscious, and visually supportive. The most striking feature of the XNX is
Use the integrated mounting lugs on the enclosure housing.
Terminate the cable shield at the internal earth ground point. Ensure the other end of the shield is grounded at the controller side only to avoid ground loops. Optional Relay and Fieldbus Wiring
Connect an external earth ground wire to the dedicated protective earth (PE) lug on the outside of the chassis. 3. Electrical Wiring and Connections Here are some general guidelines for operating the
Wire the for the 4-20mA analog loop signal output.
Proper wiring is crucial for safe operation XNX Wiring Guide .