SPXCDULNB1
SPXCDULNB1 is the Sensepoint XCD Infrared (dual-beam) carbon dioxide 2%vol complete transmitter, default 0-2.00%Vol, LM25 epoxy-coated aluminium (UL), 2 × ¾″ NPT, UL.
Part-number matrix
| Segment | Meaning | This SKU |
|---|---|---|
| SPXCD | Sensepoint XCD series | SPXCD |
| A / U | Approval A=ATEX/IECEx/GB; U=UL | U |
| L / S | Enclosure L=LM25 aluminium; S=316SS | L |
| M / N | Entry M=M20; N=3/4″ NPT | N |
| B1 | carbon dioxide 2%vol，Infrared (dual-beam) | B1 |
Key specifications
| Target gas | CO₂ / carbon dioxide 2%vol |
|---|---|
| Principle | Infrared (dual-beam) |
| Default range | 0-2.00%Vol |
| User FSD window | 0-2%VOL only |
| Resolution | n/a |
| Output | 4–20 mA sink/source + optional Modbus RTU |
| Supply | 12–32 VDC (24 VDC nominal) |
| Power | 3.7 W |
| Enclosure | LM25 epoxy-coated aluminium (UL) |
| Entries | 2 × ¾″ NPT |
| Display | Tri-colour backlight LCD |
| Relays | 3×5A@250VAC |
| Ingress | IP66 |
| Approvals | UL |
| 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 SPXCDULNB1 through the one-piece plate with M8 bolts. Entries 2 × ¾″ NPT — glands must match. Land 4–20 mA as three-wire. Magnetic wand calibration stays non-intrusive.
FAQ
- How does SPXCDULNB1 differ from SPXCDUSNB1?
- SPXCDULNB1 is complete kit (transmitter + cartridge), LM25 epoxy-coated aluminium (UL), 2 × ¾″ NPT, UL. SPXCDUSNB1 is the enclosure/approval/entry sibling.
- How is SPXCDULNB1 mounted?
- Wall-mount SPXCDULNB1 on the one-piece plate with M8 bolts; pipe Ø40–80 mm uses SPXCDMTBR, duct SPXCDDMK. Glands must match 2 × ¾″ NPT.
- Does SPXCDULNB1 include Modbus?
- SPXCDULNB1 is 4–20 mA and relays; for Modbus order SPXCDULNB1M.
- What temperature rating does SPXCDULNB1 have?
- SPXCDULNB1 certified −40 to +65 °C (T6); some T-class to +75 °C.
- Does SPXCDULNB1 have relays?
- SPXCDULNB1 has three relays 5 A @ 250 VAC. Relays are not the EN performance safety function.
- Can I hot-swap SPXCDULNB1 live?
- Do not hot-swap live. De-energise first; live swap damages pins and the flameproof joint.
Downloads
Honeywell official technical manual and certificates are available from GZion as PDF.
Availability and enquiry
Availability:In stock. Quote full P/N SPXCDULNB1.