SPXCDASMHXM
SPXCDASMHXM is the Sensepoint XCD Electrochemical (Surecell™) hydrogen sulfide complete transmitter, default 0-50ppm, 316 stainless steel, 2 × M20, ATEX / IECEx / GB. RS485 Modbus RTU.

Part-number matrix
| Segment | Meaning | This SKU |
|---|---|---|
| SPXCD | Sensepoint XCD series | SPXCD |
| A / U | Approval A=ATEX/IECEx/GB; U=UL | A |
| L / S | Enclosure L=LM25 aluminium; S=316SS | S |
| M / N | Entry M=M20; N=3/4″ NPT | M |
| HX | hydrogen sulfide,Electrochemical (Surecell™) | HX |
| M | RS485 Modbus RTU | M |
Key specifications
| Target gas | H₂S / hydrogen sulfide |
|---|---|
| Principle | Electrochemical (Surecell™) |
| Default range | 0-50ppm |
| User FSD window | 10.0–100.0ppm |
| Resolution | 1ppm |
| Output | 4–20 mA sink/source + Modbus RTU |
| Supply | 16–32 VDC (24 VDC nominal) |
| Power | 3.7 W |
| Enclosure | 316 stainless steel |
| Entries | 2 × M20 |
| Display | Tri-colour backlight LCD |
| Relays | 3×5A@250VAC |
| Ingress | IP66 |
| Approvals | ATEX / IECEx / GB |
| Temperature | −40~+65 ℃ |
| Mass | approx. 3.7 kg |
Why this principle
Fixed-point leak monitoring into a controller/ESD on 4–20 mA.
Typical applications
Fixed-point leak monitoring into a controller/ESD on 4–20 mA. Magnetic bump test without a hot-work permit.
Installation
Wall-mount SPXCDASMHXM through the one-piece plate with M8 bolts. Entries 2 × M20 — glands must match. Land 4–20 mA as three-wire. Magnetic wand calibration stays non-intrusive.
FAQ
- How is SPXCDASMHXM mounted?
- Wall-mount SPXCDASMHXM on the one-piece plate with M8 bolts; pipe Ø40–80 mm uses SPXCDMTBR, duct SPXCDDMK. Glands must match 2 × M20.
- Is SPXCDASMHXM aluminium or stainless?
- SPXCDASMHXM enclosure is 316 stainless steel. Aluminium is lighter; 316SS for salt/CIP. Sibling SPXCDALMHXM.
- What is the power draw of SPXCDASMHXM?
- SPXCDASMHXM typically draws 3.7 W.
- How does SPXCDASMHXM differ from SPXCDALMHXM?
- SPXCDASMHXM is complete kit (transmitter + cartridge), 316 stainless steel, 2 × M20, ATEX / IECEx / GB. SPXCDALMHXM is the enclosure/approval/entry sibling.
- What supply voltage does SPXCDASMHXM need?
- SPXCDASMHXM supply is 16–32 VDC (24 VDC nominal). A cartridge is not separately powered.
- Does SPXCDASMHXM have a display?
- SPXCDASMHXM transmitter has a tri-colour backlight LCD. The cartridge itself has no display.
- What sensor life should I plan for SPXCDASMHXM?
- Plan SPXCDASMHXM sensor life by principle: electrochemical/O₂ ≥24 months. Replace the cartridge and recalibrate.
- What is SPXCDASMHXM?
- SPXCDASMHXM is a Honeywell Sensepoint XCD complete kit (transmitter + cartridge): hydrogen sulfide, 316 stainless steel, entries 2 × M20, approval ATEX / IECEx / GB. Not in stock — orders accepted; lead time approx. 10 weeks. Quote full P/N SPXCDASMHXM.
- Can I hot-swap SPXCDASMHXM live?
- Do not hot-swap live. De-energise first; live swap damages pins and the flameproof joint.
- Is SPXCDASMHXM IP66?
- SPXCDASMHXM housing is IP66 (EN 60529). With weather cap and sinter down, IPX6 is kept.
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 SPXCDASMHXM.