Product Overview
The Consilium Salwico NS-AOHS-IS is an intrinsically safe, analogue-addressable multisensor detector developed for marine and offshore fire-alarm systems.
It combines an optical infrared smoke sensor with a thermistor heat sensor in one compact unit. Designed for hazardous areas, the detector is certified to Ex ia IIC T5 Ga and is suitable for vessels including LNG carriers, offshore units, cruise ships, workboats and naval vessels.
Technical Specifications
| Product information | Details |
|---|---|
| Manufacturer | Consilium Safety |
| Brand | Salwico |
| Model | NS-AOHS-IS |
| Part number | N11250 |
| Product type | Intrinsically safe addressable smoke and heat detector |
| Detection elements | Optical smoke sensor and thermistor heat sensor |
| Smoke-sensing principle | Infrared light scattering |
| Heat classification | CS, fixed temperature 84°C |
| Working voltage | 15–28 VDC |
| Normal operating current | 0.2 mA |
| Alarm current | 2.5 mA |
| Maximum input voltage | 28 VDC |
| Maximum input current | 93.3 mA |
| Maximum input power | 0.66 W |
| Internal capacitance | 1 nF |
| Internal inductance | Negligible |
| Alarm indication | Integral red LED, latched until panel reset |
| Address setting | Rear-mounted DIP switch |
| Operating temperature | −25°C to +70°C |
| Certified hazardous-area range | −20°C to +70°C |
| Ambient humidity | 0–95% RH, non-condensing |
| Housing colour | White |
| Detector-head weight | Approximately 100 g |
| Complete assembled weight | Approximately 365 g |
| Hazardous-area certification | ATEX and IECEx |
| Explosion protection | Ex ia IIC T5 Ga |
| Marine certification | MED |
| Fire-detection standards | EN 54-5 and EN 54-7 |
| Marine electrical standards | IEC 60092-504 and IEC 60533 |
| Compatible systems | CS3000, CS4000, NSAC-1, Salwico Cargo, Cruise, LNG, Offshore, Ro/Pax, Workboat, Yacht and Navy |
| Installation requirement | Connection through an intrinsically safe isolator |
| Required adapter | IP-ADAPT, Part No. 5100775, with a compatible base |
Product Description
The NS-AOHS-IS continuously monitors the protected area using two independent sensing technologies. An alarm is activated when either the optical smoke element or thermistor heat element detects a fire condition. The smoke and heat functions can also be temporarily disabled individually when required.
Its intrinsically safe design permits installation in hazardous marine environments where flammable gases may be present. The integral red LED provides clear local alarm indication, while addressable communication enables the control panel to identify the affected detector accurately.
The detector is suitable for cargo areas, machinery spaces and other classified locations aboard tankers, LNG vessels and offshore installations. As a certified intrinsically safe device, it must not be modified and must be installed using the specified isolator, adapter and compatible mounting base.
