SPXCDASMTXOM
SPXCDASMTXOM is the Sensepoint XCD oxygen transmitter (no cartridge) — no sensor cartridge included. 316 stainless steel, 2 × M20, ATEX / IECEx / GB. Order a same-family SPXCDXS*SS separately. 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 |
| TXO | oxygen transmitter (no cartridge),Transmitter only (no cartridge) | TXO |
| M | RS485 Modbus RTU | M |
Key specifications
| Type | Transmitter |
|---|---|
| Family | oxygen transmitter (no cartridge) |
| Not included | Sensor cartridge (order SPXCDXS*SS) |
| 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 SPXCDASMTXOM 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
- Which cartridge or transmitter pairs with SPXCDASMTXOM?
- Same gas code. Cartridge SPXCDXSO1SS; transmitter needs the same family.
- Is SPXCDASMTXOM IP66?
- SPXCDASMTXOM housing is IP66 (EN 60529). With weather cap and sinter down, IPX6 is kept.
- Does SPXCDASMTXOM carry a China / GB certificate?
- SPXCDASMTXOM literature states GB Ex d IIC T4 (GB3836); no standalone CNEx serial is published here.
- Does SPXCDASMTXOM need weather protection?
- Outdoors, fit SPXCDWP weather protection on SPXCDASMTXOM with the sinter down.
- How do I calibrate SPXCDASMTXOM?
- Zero/span SPXCDASMTXOM on the transmitter with certified gas and cap S3KCAL. Recalibrate after cartridge swap.
- Is the safety function on SPXCDASMTXOM the relays or 4–20 mA?
- On SPXCDASMTXOM the only EN performance safety function is 4–20 mA. Relays and Modbus are not SIL/performance-certified.
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 SPXCDASMTXOM.