Apollo XP95 I.S. Optical Smoke Detector

FAQ

What is an intrinsically safe smoke detector?

An intrinsically safe smoke detector is specifically designed for use in hazardous environments where explosive atmospheres may be present. The detector operates at low energy levels that cannot generate sufficient heat or spark to ignite flammable gases or vapours, even in fault conditions. It must be used with an approved safety barrier as part of a certified intrinsically safe system.

How many XP95 I.S. detectors can be installed on a single circuit?

Typically, an intrinsically safe circuit will support a maximum of 20 detectors, though this may be restricted to 12 optical detectors in an IIC environment. The exact number depends on several factors including the barrier type, the mix of devices fitted, and the number of detector LEDs the control and indicating equipment allows to illuminate concurrently.

What types of fires is this detector best suited for?

The XP95 I.S. Optical Smoke Detector is ideal for detecting slow burning or smouldering fires. Its photo-electric light scatter principle makes it particularly effective at identifying smoke particles from these fire types, making it well suited for escape routes and areas where early detection of smouldering fires is essential.

Can I connect a remote LED indicator to this detector?

Yes, the detector includes a drive point for connecting a remote LED indicator. Apollo lists the MiniDisc Remote Indicator (53832-070) as a suitable option. The remote LED operates in series with the integral LED. See the datasheet for indicator and installation requirements.

What is the operating temperature range?

Apollo lists an operating range of −20°C to +60°C, subject to the installation classification. See the datasheet and system guide for the applicable conditions.

Is the detector affected by environmental conditions?

The XP95 I.S. Optical Smoke Detector is unaffected by wind or atmospheric pressure changes. It operates reliably in humidity levels from 0% to 95% RH, provided there is no condensation or icing. The IP44 rating provides protection against solid objects and water splashes.

What fire alarm systems is this detector compatible with?

The detector uses native XP95 communication and Apollo lists Discovery compatibility. For a hazardous-area installation, check the panel, protocol translator and safety barrier against Apollo’s certified system configurations.