SPXCDASMRXM
SPXCDASMRXM is the Sensepoint XCD Infrared (dual-beam) methane complete transmitter, default 0-100%LEL, 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 |
| 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 | 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
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 SPXCDASMRXM 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
- What is the power draw of SPXCDASMRXM?
- SPXCDASMRXM typically draws 3.7 W.
- Does SPXCDASMRXM include Modbus?
- SPXCDASMRXM ships with RS485 Modbus RTU (suffix M).
- What supply voltage does SPXCDASMRXM need?
- SPXCDASMRXM supply is 16–32 VDC (24 VDC nominal). A cartridge is not separately powered.
- How is SPXCDASMRXM mounted?
- Wall-mount SPXCDASMRXM on the one-piece plate with M8 bolts; pipe Ø40–80 mm uses SPXCDMTBR, duct SPXCDDMK. Glands must match 2 × M20.
- What is the lead time for SPXCDASMRXM?
- Not in stock — orders accepted; lead time approx. 10 weeks. Quote full P/N SPXCDASMRXM.
- Does SPXCDASMRXM have a display?
- SPXCDASMRXM transmitter has a tri-colour backlight LCD. The cartridge itself has no display.
- What sensor life should I plan for SPXCDASMRXM?
- Plan SPXCDASMRXM sensor life by principle: IR ~5 years. Replace the cartridge and recalibrate.
- Can I magnetically calibrate SPXCDASMRXM without opening the lid?
- Use the S3KCAL wand on the SPXCDASMRXM lid calibration pad — non-intrusive. Recalibrate after a 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 SPXCDASMRXM.