NG # 03126-HW-HONEYWELL-374
MF # S3KUL2
2-wire loop-powered toxic and oxygen gas dThe Honeywell Series 3000 MkII and MkIII are rugged, low-power 2-wire loop-powered gas transmitters designed for continuous monitoring of toxic and oxygen gases in potentially hazardous industrial environments. They use Honeywell Surecell™ electrochemical sensors and provide a standard 4–20 mA output for connection to gas control panels, PLCs, and other monitoring systems.etector for use in potentially explosive atmospheres.
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Get A QuoteBoth versions feature an easy-to-read LCD display, intuitive configuration interface, sensor recognition, fault diagnostics, and programmable calibration intervals. Their smart, intrinsically safe sensor connection allows plug-and-play sensor replacement, including hot swapping without removing power from the transmitter. A remote sensor mounting kit can position the sensor up to 15 m (50 ft) from the transmitter, which is useful where the sensing point is difficult to access.
The main difference is their hazardous-area configuration. The MkII uses a flameproof transmitter housing with an intrinsically safe sensor connection and is intended primarily for Zone 1/2 applications, while the MkIII is an intrinsically safe version that, with the appropriate IS barrier, can be used for Zone 0 applications.
| Specification | Details |
|---|---|
| Product Type | Fixed Gas Transmitter |
| Series | Honeywell Series 3000 MkII / MkIII |
| Detection | Toxic and Oxygen gases |
| Sensor Technology | Surecell™ electrochemical |
| Gas Options | O₂, H₂S, CO, SO₂, NH₃, Cl₂, ClO₂, NO, NO₂, H₂, HCl, HCN, HF, PH₃, F₂, O₃ and others depending on sensor |
| Power | 2-wire loop powered |
| MkII Supply | 17–32 VDC |
| MkIII Supply | 10–30 VDC |
| Output | 4–20 mA |
| Fault Signal | 3 mA |
| Maximum Overrange | 22 mA |
| Display | LCD |
| Configuration | Non-intrusive, menu/icon-driven interface |
| Sensor Replacement | Plug-and-play / hot-swappable IS sensor |
| Remote Sensor Distance | Up to 15 m (50 ft) |
| Enclosure | Epoxy-painted LM25 aluminum or 316 stainless steel |
| Ingress Protection | IP66 / NEMA 4X |
| Dimensions | 164 × 201 × 99 mm |
| Approx. Weight | 1.7 kg aluminum; 3.7 kg stainless steel |
| Cable | 0.5–2.0 mm² (20–14 AWG) |
| MkII Hazardous Area | Zone 1, 2, 21 or 22; North American Class I/II Division 1 or 2 |
| MkIII Hazardous Area | Zone 0, 1, 2, 20, 21 or 22 with suitable IS barrier |
| Mounting | Surface or optional horizontal/vertical pipe mounting |
| Applications | Oil & gas, chemical processing, industrial plants, utilities and hazardous areas |
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