Honeywell Searchpoint Optima Plus 2108N5401H – Sampling, Ethylene, ATEX / IECEx / MED, HART+4–20 mA
2108N5401H is a Honeywell Searchpoint Optima Plus sampling point IR (Ethylene), ATEX / IECEx / MED, M25, 316SS, HART+4–20 mA, black-anodised flow housing without RGC. Order it when the sample is extracted to the head instead of diffusing through a weather cap.
Siblings: HART 2108N5401N, gas 2108N5400H, style 2108N4401H, approval 2108N5001H.
Part-number decode
| Segment | Meaning | This SKU |
|---|---|---|
| Family | Honeywell Searchpoint Optima Plus point IR | Optima Plus |
| 2108N | Current detector prefix (legacy is 2108B) | 2108N |
| 4 / 5 | 4=Standard diffusion; 5=Sampling | 5 |
| Approval | 0=ATEX M25; 1=UL NPT; 2=FM NPT; 4=MED; 6=CCCF | 4 |
| RGC | 0=no remote gassing cell; 1=RGC fitted | 0 |
| Gas | 0=Hydrocarbon; 1=Ethylene | 1 |
| Output | N=4–20 mA; H=HART+4–20 mA | H |
Technical specifications
| Category | Transmitter / Sampling |
|---|---|
| Description | Optima Plus Point IR Gas Detector,Ethylene,HART+4-20mA,ATEX/IECEx/MED,M25,316SS,sampling version with flow housing |
| Gas | Ethylene |
| Output | HART+4–20 mA |
| Approvals | ATEX / IECEx / MED |
| Entries | M25 |
| Enclosure | 316 不锈钢 |
| RGC | no |
| Principle | Point IR (dual source, dual beam) |
| Range | 0–100 %LEL (gas curve) |
| Ingress | IP66/IP67（探测器） |
Why this part number
Sampling SKU 2108N5401H uses a flow housing, not the dust-barrier + weather housing + deluge shade pack. Pressurised pump rooms and cold-box bypasses take this number; open-deck diffusion points take the Standard sibling.
Spares and mates
2108N5401H is Searchpoint Optima Plus Sampling. The detector is 316SS point IR with the factory window or flow-housing kit. Matrix: product-2698. Do not substitute Sensepoint XCD cartridges or XNX personalities.
Typical applications
Park 2108N5401H on LNG boil-off sample taps, solvent-coater ovens and compressor seal-gas extracts. 4–20 mA goes to the fire-and-gas panel; HART is asset management.
Selection contrast
| P/N | Type | Gas | Cert | Output |
|---|---|---|---|---|
| 2108N5401N | Sampling | Ethylene | MED | 4–20 mA |
| 2108N5400H | Sampling | Hydrocarbon | MED | HART+4–20 mA |
| 2108N4401H | Standard | Ethylene | MED | HART+4–20 mA |
| 2108N5001H | Sampling | Ethylene | ATEX | HART+4–20 mA |
| 2108N4001N | Standard | Ethylene | ATEX | 4–20 mA |
| 2108N4001H | Standard | Ethylene | ATEX | HART+4–20 mA |
| 2108N4011N | Standard | Ethylene | ATEX | 4–20 mA |
Installation and service
Mount 2108N5401H on a rigid 316 stand sized for the nameplate mass. Entries are M25 — do not retap. Land 4–20 mA on the fire-and-gas matrix; HART does not replace the trip pair. Pipe the flow housing into the sample line. Gas with the Ethylene curve only.
FAQ
- Calibration tip?
- Use certified gas and keep the optical window clean.
- Can I recertify 2108N5401H from hydrocarbon to ethylene in the field?
- No. This SKU is the Ethylene curve. Order sibling 2108N5400H instead of swapping filters.
- Lead time?
- Lot-based.
- Rescale on site?
- Follow the manual/ordered config; re-order if needed.
- Is 2108N5401H an XNX transmitter?
- No. 2108N5401H is the Optima detector head. Pairing with XNX needs a separate IR-personality transmitter.
Documents
Optima Plus datasheet 1 · Datasheet 2 · On-site part-number matrix
Availability and enquiry
Availability: Not in stock — orders accepted; lead time approx. 12 weeks. Quote full P/N 2108N5401H, gas/range and approval.