SPXCDULNFX
SPXCDULNFX is the Sensepoint XCD Catalytic bead (poison-resistant) flammable gas (catalytic) complete transmitter, default 0-100%LEL, LM25 epoxy-coated aluminium (UL), 2 × ¾″ NPT, UL.
Part-number matrix
| Segment | Meaning | This SKU |
|---|---|---|
| SPXCD | Sensepoint XCD series | SPXCD |
| A / U | Approval A=ATEX/IECEx/GB; U=UL | U |
| L / S | Enclosure L=LM25 aluminium; S=316SS | L |
| M / N | Entry M=M20; N=3/4″ NPT | N |
| FX | flammable gas (catalytic)，Catalytic bead (poison-resistant) | FX |
Key specifications
| Target gas | LEL / flammable gas (catalytic) |
|---|---|
| Principle | Catalytic bead (poison-resistant) |
| Default range | 0-100%LEL |
| User FSD window | 20.0–100.0%LEL |
| Resolution | 10%LEL |
| Output | 4–20 mA sink/source + optional Modbus RTU |
| Supply | 12–32 VDC (24 VDC nominal) |
| Power | 4.9 W |
| Enclosure | LM25 epoxy-coated aluminium (UL) |
| Entries | 2 × ¾″ NPT |
| Display | Tri-colour backlight LCD |
| Relays | 3×5A@250VAC |
| Ingress | IP66 |
| Approvals | UL |
| Temperature | −40~+65 ℃ |
| Mass | approx. 1.7 kg |
Why this principle
A poison-resistant pellistor sees the heat of combustion and therefore works on a wide hydrocarbon mix, including species IR filters miss. It is not a toxic detector.
Typical applications
Pump rooms, filling gantries and compressor packages still standardise on catalytic LEL.
Installation
Wall-mount SPXCDULNFX through the one-piece plate with M8 bolts. Entries 2 × ¾″ NPT — glands must match. Land 4–20 mA as three-wire. Magnetic wand calibration stays non-intrusive.
FAQ
- Which cartridge or transmitter pairs with SPXCDULNFX?
- Same gas code. Cartridge SPXCDXSFXSS; transmitter needs the same family.
- What temperature rating does SPXCDULNFX have?
- SPXCDULNFX certified −40 to +65 °C (T6); some T-class to +75 °C.
- Is the safety function on SPXCDULNFX the relays or 4–20 mA?
- On SPXCDULNFX the only EN performance safety function is 4–20 mA. Relays and Modbus are not SIL/performance-certified.
- Can I fit a different-gas cartridge on SPXCDULNFX?
- XCD auto-recognises the same family only. Do not mix an O₂ cell onto a flammable/toxic SPXCDULNFX transmitter.
- Does SPXCDULNFX provide 4–20 mA?
- SPXCDULNFX outputs 4–20 mA (source/sink). 4–20 mA is the only EN performance safety function.
- Does SPXCDULNFX have a display?
- SPXCDULNFX transmitter has a tri-colour backlight LCD. The cartridge itself has no display.
- How much does SPXCDULNFX weigh?
- SPXCDULNFX approx. 1.7 kg (trust the nameplate).
- Who supplies SPXCDULNFX and what should I quote?
- Supplied by authorized Honeywell distributor Beijing Dongfang Haitai (GZion). Quote full P/N SPXCDULNFX. In stock. Quote full P/N SPXCDULNFX.
- How does SPXCDULNFX differ from SPXCDUSNFX?
- SPXCDULNFX is complete kit (transmitter + cartridge), LM25 epoxy-coated aluminium (UL), 2 × ¾″ NPT, UL. SPXCDUSNFX is the enclosure/approval/entry sibling.
Downloads
Honeywell official technical manual and certificates are available from GZion as PDF.
Availability and enquiry
Availability:In stock. Quote full P/N SPXCDULNFX.