Key Technical Specifications
- Product Model: XNX-UTAV-RNIF1
- Manufacturer: Honeywell Analytics
- Product Type: Universal Gas Transmitter
- Output Signal: 4-20 mA with HART® Communication
- Power Supply: 16-32 VDC (Typical 24 VDC)
- Operating Temp: -40°C to +65°C
- Ingress Protection: IP66 / NEMA 4X
- Housing Material: LM25 Aluminum or 316 Stainless Steel
- Mounting: Integrated wall mount or optional pipe/ceiling brackets
- Certifications: ATEX, IECEx, UL/CSA (Class I & II, Div 1 & 2)
- Condition: Refurbished / Tested
Product Introduction
Honeywell XNX-UTAV-RNIF1 is a universal gas transmitter designed to accept input from various Honeywell sensor technologies. It provides a standardized 4-20 mA output with HART communication, allowing a single transmitter platform to handle combustible, toxic, and oxygen detection across a facility.This unit eliminates the need for multiple spare parts inventories by supporting hot-swappable electrochemical and catalytic sensors. Field experience indicates that the non-intrusive magnetic wand calibration significantly reduces maintenance time in hazardous areas. Always confirm the installed communication board and sensor cartridge type match your existing control system requirements.
Installation & Configuration Guide
Preparation (10 min)
Verify the sensor cartridge matches the gas type and range. Check that the 4-20 mA/HART board is installed correctly. Ensure 24 VDC power is available and isolated. Confirm the area is safe for non-intrusive work.Removal (5–10 min)
Isolate power to the transmitter. Disconnect the sensor cartridge if replacing the entire unit. Remove the weatherproof cover. Unscrew the sensor retainer locking screw. (I once saw a technician cross-thread the retainer because he didn’t align it first — always start threads by hand.)Installation (10 min)
Insert the new sensor cartridge, ensuring pins align with the PCB connector. Tighten the locking screw to spec. Replace the weatherproof cover. Reconnect power. Verify the display enters the warm-up routine (typically 45 seconds).Power-On & Test (10 min)
Check for fault codes on the LCD display. Use the magnetic wand to navigate the menu and verify the span calibration date. Perform a bump test with target gas to confirm response time and alarm setpoints. Log the test result in your maintenance system.
Troubleshooting Quick Reference
| Symptom | Probable Cause | Action |
|---|---|---|
| Display blank | Power supply fault | Measure 24 VDC at terminals; check fuse |
| “Sensor Fault” code | Missing or incompatible sensor | Verify sensor type; reseat cartridge |
| High reading drift | Sensor end-of-life or contamination | Perform zero calibration; bump test |
| HART comm failure | Loop resistance < 250Ω | Add loop resistor; check wiring |
| “Inhibit” mode active | Calibration in progress or fault | Complete calibration; clear fault via menu |
Dimensions, Mounting & Wiring Notes
- Dimensions: 160mm x 197mm x 114mm
- Mounting: Integrated backplate for wall/Unistrut; optional pipe/ceiling kits
- Wiring: 5 x M25 or 3/4″ NPT conduit entries; plug-in terminal blocks
- Note: Always photograph DIP switch positions and sensor orientation before removal. Ensure cable glands are tightened to maintain IP66 rating.
FAQ
Will this transmitter work with my existing Honeywell sensors?
Most likely, but verify the sensor cartridge part number. The XNX platform supports a wide range, but some legacy sensors require specific adapter boards. Send us a photo of your current sensor label, and we’ll confirm compatibility.I’m getting a “Span Failed” error after calibration. What’s wrong?
Check your gas concentration and flow rate. If the gas is expired or the flow is too low, the sensor won’t reach the target value within the timeout. Also, verify the span gas concentration setting in the menu matches your cylinder.Is this transmitter new or refurbished?
This unit is refurbished and fully tested under simulated operating conditions. It is not factory-sealed new surplus. Function is verified; cosmetic wear may be present.Can I use this for both toxic and combustible gases?
Yes, but not simultaneously. The XNX is a universal platform; you configure it for one gas type at a time by installing the appropriate sensor cartridge. You cannot mix sensor types in a single transmitter housing.What’s the lead time if you don’t have it in stock?
Typically 3–5 business days for tested units. If you need a specific housing material (e.g., 316 SS) that’s backordered, we’ll tell you upfront rather than ship an aluminum unit for a corrosive environment.Do you include a test report?
Yes. Every unit ships with a test record showing bump test response, HART communication verification, and zero/span calibration status. No report, no shipment.I’ve never used the magnetic wand before. Any tips?
Hold the wand flat against the front label, directly over the sensor icon. Wait for the audible click or display change before moving. Don’t wave it around — the reed switches need a steady magnetic field to register.
