SPXCDALMHX
SPXCDALMHX is the Sensepoint XCD Electrochemical (Surecell™) hydrogen sulfide complete transmitter, default 0-50ppm, LM25 epoxy-coated aluminium, 2 × M20, ATEX / IECEx / GB.

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 | L |
| M / N | Entry M=M20; N=3/4″ NPT | M |
| HX | hydrogen sulfide,Electrochemical (Surecell™) | HX |
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 + optional Modbus RTU |
| Supply | 16–32 VDC (24 VDC nominal) |
| Power | 3.7 W |
| Enclosure | LM25 epoxy-coated aluminium |
| Entries | 2 × M20 |
| Display | Tri-colour backlight LCD |
| Relays | 3×5A@250VAC |
| Ingress | IP66 |
| Approvals | ATEX / IECEx / GB |
| Temperature | −40~+65 ℃ |
| Mass | approx. 1.7 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 SPXCDALMHX 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
- Is SPXCDALMHX IP66?
- SPXCDALMHX housing is IP66 (EN 60529). With weather cap and sinter down, IPX6 is kept.
- Can I hot-swap SPXCDALMHX live?
- Do not hot-swap live. De-energise first; live swap damages pins and the flameproof joint.
- How much does SPXCDALMHX weigh?
- SPXCDALMHX approx. 1.7 kg (trust the nameplate).
- What is the power draw of SPXCDALMHX?
- SPXCDALMHX typically draws 3.7 W.
- Does SPXCDALMHX carry a China / GB certificate?
- SPXCDALMHX literature states GB Ex d IIC T4 (GB3836); no standalone CNEx serial is published here.
- What sensor life should I plan for SPXCDALMHX?
- Plan SPXCDALMHX sensor life by principle: electrochemical/O₂ ≥24 months. Replace the cartridge and recalibrate.
- Is SPXCDALMHX aluminium or stainless?
- SPXCDALMHX enclosure is LM25 epoxy-coated aluminium. Aluminium is lighter; 316SS for salt/CIP. Sibling SPXCDASMHX.
- Does SPXCDALMHX provide 4–20 mA?
- SPXCDALMHX outputs 4–20 mA (source/sink). 4–20 mA is the only EN performance safety function.
- What supply voltage does SPXCDALMHX need?
- SPXCDALMHX supply is 16–32 VDC (24 VDC nominal). A cartridge is not separately powered.
- Does SPXCDALMHX need weather protection?
- Outdoors, fit SPXCDWP weather protection on SPXCDALMHX with the sinter down.
Downloads
Honeywell official technical manual and certificates are available from GZion as PDF.
Availability and enquiry
Availability:In stock. Quote full P/N SPXCDALMHX.