Honeywell XNX XNX-UTSV-RNCB1 – MPD catalytic 0–100 %LEL, mV, UL, 316SS, 3/4" NPT
XNX-UTSV-RNCB1 is a factory-configured Honeywell XNX gas detector: mV personality, MPD catalytic bead 0–100 %LEL, UL / cUL, 4 × 3/4" NPT, 316 stainless steel, 3 relays + 4–20 mA HART, no local HART port. Specify it for mixed hydrocarbon LEL points where infrared windows would fog or the stream is not methane/propane-specific.
Same sensor, swap enclosure/approval: aluminium XNX-UTAV-RNCB1, 316SS XNX-UTSV-RNCB1, other approval XNX-AMSV-RNCB1. XNX-UTAV-RNCB1 · XNX-UTSV-RNCB1 · XNX-AMSV-RNCB1
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 | R |
| N / H | Local HART port N=no; H=yes | N |
| CB1 | MPD catalytic 0–100 %LEL | CB1 |
Same sensor, swap enclosure/approval: aluminium XNX-UTAV-RNCB1, 316SS XNX-UTSV-RNCB1, other approval XNX-AMSV-RNCB1.
Technical specifications
| Category | Transmitter Configured |
|---|---|
| Personality | mV personality (MPD catalytic / MPD IR) |
| Sensor / range | MPD catalytic 0–100 %LEL |
| Target | LEL / flammable gas (catalytic) |
| Principle | MPD catalytic bead |
| Output | 3 relays + 4–20 mA HART |
| Local HART | no local HART port |
| 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
A poison-resistant MPD pellistor sees combustion heat across a wide hydrocarbon mix, including species an IR filter misses. It needs oxygen and hates silicones. Mount above light-gas releases and below heavy vapours; keep silicone sealants off the sinter.
Personality and replaceable parts
XNX-UTSV-RNCB1 uses the mV personality (MPD catalytic / MPD IR) board and mates with Honeywell MPD catalytic bead or MPD infrared sensors. Factory-fitted with MPD catalytic 0–100 %LEL. Spares live on product-3991. Do not substitute Sensepoint XCD cartridges on XNX.
Typical applications
Pump rooms, filling gantries and compressor packages still standardise on catalytic LEL because the gas slate is mixed. XNX holds 4–20 mA HART into the ESD matrix; magnetic non-intrusive calibration keeps the flameproof lid closed.
Selection contrast
| P/N | Gas | Range | Option | Body |
|---|---|---|---|---|
| XNX-UTAV-RNCB1 | LEL | 0–100 %LEL | Relays | Aluminium |
| XNX-AMSV-RNCB1 | LEL | 0–100 %LEL | Relays | 316SS |
| XNX-UTSV-RNIV1 | CH₄ | 0–100 %LEL | Relays | 316SS |
| XNX-UTSV-RNIF1 | C₃H₈ | 0–100 %LEL | Relays | 316SS |
| XNX-UTSV-RNIC1 | CO₂ | 0–5 %v/v | Relays | 316SS |
| XNX-UTSV-RNNNN | body | — | Relays | 316SS |
| XNX-UTSV-NNCB1 | LEL | 0–100 %LEL | HART | 316SS |
Installation and wiring
Wall-mount XNX-UTSV-RNCB1 (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-RNCB1. Land XNX-UTSV-RNCB1 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-RNCB1 lid stay non-intrusive. Keep silicones off the XNX-UTSV-RNCB1 pellistor; light hydrocarbons high, heavy vapours low.
FAQ
- Comms options?
- Relays, Modbus, Foundation Fieldbus etc. depending on order.
- Local HART?
- Depends on the local-HART digit — do not confuse with other options.
- Will silicone vapours kill the XNX-UTSV-RNCB1 pellistor?
- Yes. Silicones and chlorinated solvents poison the MPD catalytic bead on XNX-UTSV-RNCB1. Specify IV1/IF1 infrared if those contaminants are routine.
- Install?
- Torque, entries and earthing per the manual.
- Vs XCD?
- XNX emphasises a universal transmitter platform; XCD is often sold as integrated configs.
Documents
Honeywell XNX datasheet / manual · On-site XNX selection matrix
Availability and enquiry
Availability: Not in stock — orders accepted; lead time approx. 16 weeks. Quote full P/N XNX-UTSV-RNCB1, gas/range and approval.