Honeywell XNX XNX-AMSV-NHIC1 – MPD IR carbon dioxide 0–5 %v/v, mV, ATEX, 316SS, M25
XNX-AMSV-NHIC1 is a factory-configured Honeywell XNX with MPD infrared carbon dioxide 0–5 %v/v, mV personality, ATEX / IECEx (INMETRO on selected MPD SKUs), 4 × M25, 316 stainless steel, 4–20 mA HART only (no option board), local HART port on the transmitter. Use it on beverage carbonation, inerting cabinets and fermenter headspace—not as a toxic ppm cell.
Same sensor, swap enclosure/approval: aluminium XNX-AMAV-NHIC1, 316SS XNX-AMSV-NHIC1, other approval XNX-UTSV-NHIC1. XNX-AMAV-NHIC1 · XNX-AMSV-NHIC1 · XNX-UTSV-NHIC1
Part-number decode
| Segment | Meaning | This SKU |
|---|---|---|
| XNX | Honeywell XNX universal transmitter | XNX |
| A / U | Approval A=ATEX/IECEx; U=UL/cUL | A |
| M / T | Entry M=M25; T=3/4" NPT | M |
| 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 | N |
| N / H | Local HART port N=no; H=yes | H |
| IC1 | MPD IR carbon dioxide 0–5 %v/v | IC1 |
Same sensor, swap enclosure/approval: aluminium XNX-AMAV-NHIC1, 316SS XNX-AMSV-NHIC1, other approval XNX-UTSV-NHIC1.
Technical specifications
| Category | Transmitter Configured |
|---|---|
| Personality | mV personality (MPD catalytic / MPD IR) |
| Sensor / range | MPD IR carbon dioxide 0–5 %v/v |
| Target | CO₂ / carbon dioxide |
| Principle | MPD infrared (CO₂) |
| 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 | 316 stainless steel |
| Entries | 4 × M25 |
| Display | Backlit LCD, magnetic-wand menus |
| Ingress | IP66 |
| Approvals | ATEX / IECEx (INMETRO on selected MPD SKUs) |
| Temperature | −40~+65 ℃ |
| Mass | approx. 5.0 kg |
| Mates with | Honeywell MPD catalytic bead or MPD infrared sensors |
Why this personality / sensor
CO₂ is heavier than air and fills cellars from the floor up. Percent-level CO₂ is an IR measurement; an electrochemical toxic cell cannot span 5 %vol. Mount 300 mm above the lowest floor and keep the optical path off wet drains.
Personality and replaceable parts
XNX-AMSV-NHIC1 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 carbon dioxide 0–5 %v/v. Spares live on product-3991. Do not substitute Sensepoint XCD cartridges on XNX.
Typical applications
Soft-drink carbonation, brewery cellars and CO₂-inerted cabinets need a 5 %vol trip before asphyxiation. XNX provides the hard-wired extract start; a portable wand is only a leak survey tool.
Selection contrast
| P/N | Gas | Range | Option | Body |
|---|---|---|---|---|
| XNX-AMAV-NHIC1 | CO₂ | 0–5 %v/v | HART | Aluminium |
| XNX-UTSV-NHIC1 | CO₂ | 0–5 %v/v | HART | 316SS |
| XNX-AMSV-NHCB1 | LEL | 0–100 %LEL | HART | 316SS |
| XNX-AMSV-NHIV1 | CH₄ | 0–100 %LEL | HART | 316SS |
| XNX-AMSV-NHIF1 | C₃H₈ | 0–100 %LEL | HART | 316SS |
| XNX-AMSV-NHNNN | body | — | HART | 316SS |
| XNX-AMSV-RHIC1 | CO₂ | 0–5 %v/v | Relays | 316SS |
Installation and wiring
Wall-mount XNX-AMSV-NHIC1 (316 stainless steel, approx. 5.0 kg) on a rigid stand sized for that mass. This SKU uses 4 × M25 entries—glands must match; do not retap XNX-AMSV-NHIC1. Land XNX-AMSV-NHIC1 4–20 mA HART per the loop drawing; relays/Modbus/FFB exist only on the matching option board. Magnetic-wand menus on the XNX-AMSV-NHIC1 lid stay non-intrusive. XNX-AMSV-NHIC1 5 %v/v CO₂ hugs the cellar floor.
FAQ
- Is XNX-AMSV-NHIC1 a toxic ppm CO₂ detector?
- No. XNX-AMSV-NHIC1 is 0–5 %v/v IR for asphyxiation / inerting. ppm indoor-air CO₂ is a different instrument class.
- Should I mount XNX-AMSV-NHIC1 high or low?
- Low. CO₂ is heavier than air. Keep XNX-AMSV-NHIC1 about 300 mm above the lowest floor, not at the roof ridge.
- Why is XNX-AMSV-NHIC1 316SS instead of aluminium?
- XNX-AMSV-NHIC1 is the marine/sour-service body (~5 kg). Inland dry rooms can take aluminium sibling XNX-AMAV-NHIC1 and save mass on the bracket.
- Can I convert XNX-AMSV-NHIC1 from ATEX M25 to NPT in the field?
- No. XNX-AMSV-NHIC1 flameproof entries are machined M25. North-American NPT is UL sibling XNX-UTSV-NHIC1, not an adaptor on this ATEX body.
- Does XNX-AMSV-NHIC1 include alarm relays?
- No. XNX-AMSV-NHIC1 is 4–20 mA HART only. Local trip contacts need option-R sibling XNX-AMSV-RHIC1; plant-bus needs Modbus XNX-AMSV-MHIC1 or Foundation Fieldbus XNX-AMSV-FHIC1.
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-AMSV-NHIC1 or UL XNX-UTSV-NHIC1 rather than a dead SKU.