SPXCDULNFXM
SPXCDULNFXM 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. RS485 Modbus RTU.
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 |
| M | RS485 Modbus RTU | M |
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 + 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 SPXCDULNFXM 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
- Does SPXCDULNFXM have relays?
- SPXCDULNFXM has three relays 5 A @ 250 VAC. Relays are not the EN performance safety function.
- Can I retap SPXCDULNFXM from M20 to NPT?
- No. SPXCDULNFXM flameproof entries are machined 2 × ¾″ NPT. Order the matching P/N for the other thread.
- Which cartridge or transmitter pairs with SPXCDULNFXM?
- Same gas code. Cartridge SPXCDXSFXSS; transmitter needs the same family.
- Does SPXCDULNFXM have a display?
- SPXCDULNFXM transmitter has a tri-colour backlight LCD. The cartridge itself has no display.
- How do I calibrate SPXCDULNFXM?
- Zero/span SPXCDULNFXM on the transmitter with certified gas and cap S3KCAL. Recalibrate after cartridge swap.
Downloads
Honeywell official technical manual and certificates are available from GZion as PDF.
Availability and enquiry
Availability:Not in stock — orders accepted; lead time approx. 10 weeks. Quote full P/N SPXCDULNFXM.