Honeywell XNX XNX-UTAV-NHNNN – no sensor (transmitter body), mV, UL, Aluminium, 3/4" NPT
XNX-UTAV-NHNNN is a Honeywell XNX universal transmitter body with the mV personality, UL / cUL, 4 × 3/4" NPT entries, LM25 aluminium (painted), 4–20 mA HART only (no option board), local HART port on the transmitter, and no MPD sensor in the carton. Order it when the field later fits an MPD catalytic or MPD IR head (CB1 / IV1 / IF1 / IC1) instead of a factory-configured detector.
Same sensor, swap enclosure/approval: aluminium XNX-UTAV-NHNNN, 316SS XNX-UTSV-NHNNN, other approval XNX-AMAV-NHNNN. XNX-UTAV-NHNNN · XNX-UTSV-NHNNN · XNX-AMAV-NHNNN
Part-number decode
| Segment | Meaning | This SKU |
|---|---|---|
| XNX | Honeywell XNX universal transmitter | XNX |
| A / U | Approval A=ATEX/IECEx; U=UL/cUL | U |
| M / T | Entry M=M25; T=3/4" NPT | T |
| A / S | Enclosure A=aluminium; S=316SS | A |
| V / I / E | Personality V=mV(MPD); I=IR Optima/Excel; E=EC | V |
| N / R / M / F | Option N=HART only; R=relays; M=Modbus; F=FFB | N |
| N / H | Local HART port N=no; H=yes | H |
| NNN | no sensor (transmitter body) | NNN |
Same sensor, swap enclosure/approval: aluminium XNX-UTAV-NHNNN, 316SS XNX-UTSV-NHNNN, other approval XNX-AMAV-NHNNN.
Technical specifications
| Category | 变送器本体 |
|---|---|
| Personality | mV personality (MPD catalytic / MPD IR) |
| Sensor / range | no sensor (transmitter body) |
| Target | body / sensor not fitted |
| Principle | personality board only |
| Output | 4–20 mA HART only (no option board) |
| Local HART | local HART port on the transmitter |
| Supply | 16–32 VDC (24 VDC nominal) |
| Enclosure | LM25 aluminium (painted) |
| Entries | 4 × 3/4" NPT |
| Display | Backlit LCD, magnetic-wand menus |
| Ingress | IP66 |
| Approvals | UL / cUL |
| Temperature | −40~+65 ℃ |
| Mass | approx. 2.8 kg |
| Mates with | Honeywell MPD catalytic bead or MPD infrared sensors |
Why this personality / sensor
The mV personality is the millivolt interface for Honeywell MPD heads. Catalytic and MPD IR share that board; an IR Optima/Excel head will not talk to this SKU, and an electrochemical cell needs the EC personality. Buy a body when the sensor slate is still open or when you stock transmitters separately from MPD cartridges.
Personality and replaceable parts
XNX-UTAV-NHNNN uses the mV personality (MPD catalytic / MPD IR) board and mates with Honeywell MPD catalytic bead or MPD infrared sensors. This SKU ships without a sensor; order the head by gas. Spares live on product-3991. Do not substitute Sensepoint XCD cartridges on XNX.
Typical applications
Typical body SKUs sit in a warehouse next to mixed MPD stock: pump rooms that may take catalytic LEL, biogas roofs that need methane IR, LPG pits that need propane IR, and inerting cabinets that need CO₂. The transmitter is already certified and threaded; you only mate the MPD later.
Selection contrast
| P/N | Gas | Range | Option | Body |
|---|---|---|---|---|
| XNX-UTSV-NHNNN | body | — | HART | 316SS |
| XNX-AMAV-NHNNN | body | — | HART | Aluminium |
| XNX-UTAV-NHCB1 | LEL | 0–100 %LEL | HART | Aluminium |
| XNX-UTAV-NHIV1 | CH₄ | 0–100 %LEL | HART | Aluminium |
| XNX-UTAV-NHIF1 | C₃H₈ | 0–100 %LEL | HART | Aluminium |
| XNX-UTAV-NHIC1 | CO₂ | 0–5 %v/v | HART | Aluminium |
| XNX-UTAV-RHNNN | body | — | Relays | Aluminium |
Installation and wiring
Wall-mount XNX-UTAV-NHNNN (LM25 aluminium (painted), approx. 2.8 kg) on a rigid stand sized for that mass. This SKU uses 4 × 3/4" NPT entries—glands must match; do not retap XNX-UTAV-NHNNN. Land XNX-UTAV-NHNNN 4–20 mA HART per the loop drawing; relays/Modbus/FFB exist only on the matching option board. Magnetic-wand menus on the XNX-UTAV-NHNNN lid stay non-intrusive. XNX-UTAV-NHNNN is a body: wall-mount the transmitter first and mate the head after the personality is confirmed—do not buy a configured SKU until the gas is frozen.
FAQ
- Can I add an MPD sensor to XNX-UTAV-NHNNN later?
- XNX-UTAV-NHNNN ships as a transmitter body. mV personalities accept MPD CB1/IV1/IF1/IC1 heads; IR personalities need Optima/Excel; EC personalities need XNX electrochemical cells. Do not mix those three families on this board.
- Is XNX-UTAV-NHNNN a complete gas detector?
- No. XNX-UTAV-NHNNN is electronics and enclosure only. A configured detector has a three-character sensor code such as CB1 instead of NNN.
- When should I swap XNX-UTAV-NHNNN aluminium for 316SS?
- Use XNX-UTAV-NHNNN (aluminium, ~2.8 kg) in inland, painted plant. Coastal, splash and sour-water decks should move to stainless sibling XNX-UTSV-NHNNN.
- Why is XNX-UTAV-NHNNN NPT instead of M25?
- XNX-UTAV-NHNNN is the UL/cUL body and ships 3/4" NPT. Do not tap M25 on this lid—order ATEX sibling XNX-AMAV-NHNNN if metric glands are mandatory.
- Does XNX-UTAV-NHNNN include alarm relays?
- No. XNX-UTAV-NHNNN is 4–20 mA HART only. Local trip contacts need option-R sibling XNX-UTAV-RHNNN; plant-bus needs Modbus XNX-UTAV-MHNNN or Foundation Fieldbus XNX-UTAV-FHNNN.
Documents
Honeywell XNX datasheet / manual · On-site XNX selection matrix
Availability and enquiry
Stock is lot-based. If this box is out, jump to 316SS XNX-UTSV-NHNNN or UL XNX-UTAV-NHNNN rather than a dead SKU.