Honeywell XNX XNX-UTSV-MHIF1 – MPD IR propane 0–100 %LEL, mV, UL, 316SS, 3/4" NPT
XNX-UTSV-MHIF1 is a factory-configured Honeywell XNX with MPD infrared propane 0–100 %LEL, mV personality, UL / cUL, 4 × 3/4" NPT, 316 stainless steel, Modbus RTU + 4–20 mA HART, local HART port on the transmitter. Order it for LPG bullets and cylinder halls; methane IR (IV1) will under-read propane.
Same sensor, swap enclosure/approval: aluminium XNX-UTAV-MHIF1, 316SS XNX-UTSV-MHIF1, other approval XNX-AMSV-MHIF1. XNX-UTAV-MHIF1 · XNX-UTSV-MHIF1 · XNX-AMSV-MHIF1
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 | S |
| 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 | M |
| N / H | Local HART port N=no; H=yes | H |
| IF1 | MPD IR propane 0–100 %LEL | IF1 |
Same sensor, swap enclosure/approval: aluminium XNX-UTAV-MHIF1, 316SS XNX-UTSV-MHIF1, other approval XNX-AMSV-MHIF1.
Technical specifications
| Category | Transmitter Configured |
|---|---|
| Personality | mV personality (MPD catalytic / MPD IR) |
| Sensor / range | MPD IR propane 0–100 %LEL |
| Target | C₃H₈ / propane |
| Principle | MPD infrared (propane) |
| Output | Modbus RTU + 4–20 mA HART |
| Local HART | local HART port on the transmitter |
| Supply | 16–32 VDC (24 VDC nominal) |
| Enclosure | 316 stainless steel |
| Entries | 4 × 3/4" NPT |
| Display | Backlit LCD, magnetic-wand menus |
| Ingress | IP66 |
| Approvals | UL / cUL |
| Temperature | −40~+65 ℃ |
| Mass | approx. 5.0 kg |
| Mates with | Honeywell MPD catalytic bead or MPD infrared sensors |
Why this personality / sensor
Propane is heavier than air and slides into pits. MPD IR tuned for C₃ does not need oxygen and ignores silicone poisons that kill CB1 beads. Mount 200–400 mm above grade at the pit lip, not on the roof.
Personality and replaceable parts
XNX-UTSV-MHIF1 uses the mV personality (MPD catalytic / MPD IR) board and mates with Honeywell MPD catalytic bead or MPD infrared sensors. Factory-fitted with MPD IR propane 0–100 %LEL. Spares live on product-3991. Do not substitute Sensepoint XCD cartridges on XNX.
Typical applications
LPG tank farms, bottle-filling halls and kitchen-gas manifolds need a propane-specific IR trip. XNX hard-wires 4–20 mA HART to tank ESD; a handheld only proves the aisle you walked.
Selection contrast
| P/N | Gas | Range | Option | Body |
|---|---|---|---|---|
| XNX-UTAV-MHIF1 | C₃H₈ | 0–100 %LEL | Modbus | Aluminium |
| XNX-AMSV-MHIF1 | C₃H₈ | 0–100 %LEL | Modbus | 316SS |
| XNX-UTSV-MHCB1 | LEL | 0–100 %LEL | Modbus | 316SS |
| XNX-UTSV-MHIV1 | CH₄ | 0–100 %LEL | Modbus | 316SS |
| XNX-UTSV-MHIC1 | CO₂ | 0–5 %v/v | Modbus | 316SS |
| XNX-UTSV-MHNNN | body | — | Modbus | 316SS |
| XNX-UTSV-NHIF1 | C₃H₈ | 0–100 %LEL | HART | 316SS |
Installation and wiring
Wall-mount XNX-UTSV-MHIF1 (316 stainless steel, approx. 5.0 kg) on a rigid stand sized for that mass. This SKU uses 4 × 3/4" NPT entries—glands must match; do not retap XNX-UTSV-MHIF1. Land XNX-UTSV-MHIF1 4–20 mA HART per the loop drawing; relays/Modbus/FFB exist only on the matching option board. Magnetic-wand menus on the XNX-UTSV-MHIF1 lid stay non-intrusive. XNX-UTSV-MHIF1 propane belongs at the pit lip, not the roof.
FAQ
- Can I use methane IR instead of XNX-UTSV-MHIF1 on an LPG skid?
- No. Response curves differ. XNX-UTSV-MHIF1 is propane (IF1). IV1 methane IR will under-alarm a propane release.
- Does XNX-UTSV-MHIF1 work in oxygen-free LPG vapour space?
- Yes. MPD IR on XNX-UTSV-MHIF1 does not combust the sample, so inerted LPG vapour spaces remain measurable.
- Why is XNX-UTSV-MHIF1 316SS instead of aluminium?
- XNX-UTSV-MHIF1 is the marine/sour-service body (~5 kg). Inland dry rooms can take aluminium sibling XNX-UTAV-MHIF1 and save mass on the bracket.
- Why is XNX-UTSV-MHIF1 NPT instead of M25?
- XNX-UTSV-MHIF1 is the UL/cUL body and ships 3/4" NPT. Do not tap M25 on this lid—order ATEX sibling XNX-AMSV-MHIF1 if metric glands are mandatory.
- Can I retrofit Foundation Fieldbus on XNX-UTSV-MHIF1 after it ships?
- No. XNX-UTSV-MHIF1 is the Modbus RTU option board. FFB is a different sales option (XNX-UTSV-FHIF1), not a jumper on this lid.
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-MHIF1 or UL XNX-UTSV-MHIF1 rather than a dead SKU.