Honeywell Searchpoint Optima Plus is an infrared hydrocarbon gas detector for explosive atmospheres in offshore, refinery, and LNG/LPG facilities.
Infrared point hydrocarbon gas detector certified for use in potentially explosive atmospheres with over 40 years of design and manufacturing experience. Features infrared detection principle with fastest speed of response, fail-to-safe operation, reduced routine maintenance, advanced internal fault diagnostics and false alarm rejection. Suitable for offshore oil and gas platforms, FPSO vessels, tankers, refineries, LNG/LPG bottling plants, gas compressor stations, power plants and solvent facilities. Optional HART over 4-20mA output, IP66/67 rated, 316 stainless steel construction.
| Performance | |
| Output Signal Range | 4 to 20 mA Autosensing Sink or Source |
| Measuring Range | 0-100% LEL |
| Accuracy | Optima Plus (Ethylene): Baseline < ±2% fsd, 50% fsd <±3% fsd; Optima Plus (Hydrocarbon): Baseline < ±1% fsd, 50% fsd <±2% fsd |
| Digital Output | Modbus RS485 (via XNX), Optional HART® over 4 to 20 mA output (HART® Version 7) |
| Response Time | T50 < 3 s, T90 < 4 s (methane) |
| Alarm Settings | Fault: 0 mA (Hart® Units Adjustable to 1 mA); Inhibit: 1-3mA (Default 2 mA); Over Range: 20-21.5 mA (Default 21 mA); Warning: 0 to 6 mA (Default 3 mA) |
| Power | |
| Power Requirement | 18 to 32 VDC |
| Physical | |
| Material | 316 Stainless Steel |
| Enclosure Material | Plastic |
| Weight range | 1.6 kg |
| Connectivity | |
| Digital Communication Ports | UV/IR |
| Approvals & Warranty | |
| Ingress Protection | IP66/67 |
| Other | |
| Repeatability | < ±2% fsd @50% fsd |
| Minimum Temperature | -40˚C |
| Maximum Temperature | +65°C |
Calibration, repair & warranty service in our San Antonio depot.



