SPXCDALMRXM
SPXCDALMRXM is the Sensepoint XCD Infrared (dual-beam) methane complete transmitter, default 0-100%LEL, LM25 epoxy-coated aluminium, 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 | L |
| M / N | Entry M=M20; N=3/4″ NPT | M |
| RX | methane，Infrared (dual-beam) | RX |
| M | RS485 Modbus RTU | M |
Key specifications
| Target gas | CH₄ / methane |
|---|---|
| Principle | Infrared (dual-beam) |
| 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 | 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
Dual-beam IR sees methane’s absorption band, resists catalytic poisons and works in inert atmospheres.
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 SPXCDALMRXM 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 SPXCDALMRXM mounted?
- Wall-mount SPXCDALMRXM on the one-piece plate with M8 bolts; pipe Ø40–80 mm uses SPXCDMTBR, duct SPXCDDMK. Glands must match 2 × M20.
- Does SPXCDALMRXM use M20 or NPT entries?
- SPXCDALMRXM entries are 2 × M20. Do not retap in the field; order the matching P/N.
- Does SPXCDALMRXM have relays?
- SPXCDALMRXM has three relays 5 A @ 250 VAC. Relays are not the EN performance safety function.
- Can I hot-swap SPXCDALMRXM live?
- Do not hot-swap live. De-energise first; live swap damages pins and the flameproof joint.
- What supply voltage does SPXCDALMRXM need?
- SPXCDALMRXM supply is 16–32 VDC (24 VDC nominal). A cartridge is not separately powered.
- What gas and range does SPXCDALMRXM cover?
- SPXCDALMRXM measures methane at default 0-100%LEL (user window 20.0–100.0%LEL). Principle: Infrared (dual-beam).
- Can I fit a different-gas cartridge on SPXCDALMRXM?
- XCD auto-recognises the same family only. Do not mix an O₂ cell onto a flammable/toxic SPXCDALMRXM transmitter.
- What is the power draw of SPXCDALMRXM?
- SPXCDALMRXM typically draws 3.7 W.
- Can I magnetically calibrate SPXCDALMRXM without opening the lid?
- Use the S3KCAL wand on the SPXCDALMRXM lid calibration pad — non-intrusive. Recalibrate after a swap.
- Is SPXCDALMRXM aluminium or stainless?
- SPXCDALMRXM enclosure is LM25 epoxy-coated aluminium. Aluminium is lighter; 316SS for salt/CIP. Sibling SPXCDASMRXM.
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 SPXCDALMRXM.