Apollo Discovery Smoke & Heat Multisensor Detector - 58000-700APO

SKU
58000-700APO
£44.66 £37.22
Apollo Discovery Smoke & Heat Multisensor Detector - 58000-700APO
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The Discovery Multisensor Detector consists of  optical smoke and thermistor temperature sensors which give both a combined signal as well as a separate heat signal for improved false alarm management.

Electrical Description

The Discovery Optical/ Heat Multisensor detector is designed to be connected to a two wire loop circuit carrying both data and a 17 V to 28 V dc supply. The detector is connected to the incoming and outgoing supply via terminals L1 and L2 in the mounting base. A remote LED indicator requiring not more than 4 mA at 5 V may be connected between the +R and -R terminals. An earth connection terminal is also provided.

Operation

The Discovery Multisensor construction is similar to that of the optical detector but uses a different lid and optical mouldings to accommodate the thermistor (heat sensor). 

The Discovery Optical/Heat Multisensor Detector contains an optical smoke sensor and a thermistor temperature sensor whose outputs are combined to give the final analogue value. The way in which the signals from the two sensors are combined depends on the response mode selected. The five modes provide response behaviour which incorporates pure heat detection, pure smoke detection and a combination of both. The multisensor is therefore useful over the widest range of applications. 

The signals from the optical smoke sensing element and the temperature sensor are independent, and represent the smoke level and the air temperature respectively in the vicinity of the detector. 

The detector’s micro-controller processes the two signals according to the mode selected. When the detector is operating as a multisensor (i.e. modes 1, 3 and 4) the temperature signal processing extracts only rate-of-rise information for combination with the optical signal. In these modes the detector will not respond to a slow temperature increase – even if the temperature reaches a high level. A large sudden change in temperature can, however, cause an alarm without the presence of smoke, if sustained for 20 seconds.

Device Addressing

The processing algorithms in modes 1 to 4 incorporate drift compensation. 

The characteristics of the five response modes are summarised below.

Mode 1 - has very high smoke sensitivity combined with high heat sensitivity. This gives a high overall sensitivity to both smouldering and flaming fires.

Mode 2 - has a smoke sensitivity similar to that of a normal optical smoke detector. This mode is therefore equivalent to a standard optical detector. It is suitable for applications in which wide temperature changes occur under normal conditions.

Mode 3 - has moderate smoke sensitivity combined with a moderate sensitivity to heat. This combination is considered the optimum for most general applications since it offers good response to both smouldering and flaming fires.

Mode 4 - has lower than normal smoke sensitivity combined with high heat sensitivity. This makes it suitable for applications in which a certain amount of fumes or smoke is considered normal.

Mode 5 - has no smoke sensitivity at all, but gives a pure heat detector response meeting the response time requirements for a Class A1R detector in the European standard EN 54-5. In this mode the detector will respond to slowly changing temperatures and has a “fixed" temperature” alarm threshold at 58°C. The analogue value in this mode will give the approximate air temperature over the range 15°C to 55°C.

In mode 5, the smoke sensor is still active though it does not contribute to the analogue signal. As a consequence, if the detector is used in a dirty or smoky environment the optical sensor drift flag may be activated in the heat-only mode.

Notes 

1. This applies only to fire control panels which have been programmed to read the additional information.

2. In situ testing of the Multisensor detector should be carried out as for smoke detectors in response mode 2 and for heat detectors in response mode 5. Both optical and heat sensors must be tested in modes 1,3 and 4. 

3. If the Multisensor is to be used in mode 5, heat detector spacing/coverage should be applied.

Additional Information

Discovery Optical/Heat Multisensor Detectors allow access to unprocessed temperature information . The raw temperature data can be used in conjunction with the analogue value to enhance alarm signal processing and provide an additional level of safety.  

The exact method of polling to make use of this feature is described in a technical document available to panel partners.

Communication

Discovery uses a digital communications protocol which has been developed from the XP95 protocol but differs in that it allows communication in three different modes: (Normal, Read and Write) to allow a more extensive exchange of information and commands than previous analogue addressable ranges. In addition, Discovery can store data in non-volatile memory. 

The Normal mode is identical to the XP95 protocol with the exception that the five additional analogue value bits in the XP95 protocol extension have been re-defined so that the fire control panel is able to distinguish between Discovery and XP95 devices.

The Read mode is used to check information stored in the non-volatile memory of each detector. It is accessed by using a simple extension to the Normal mode communication method from the fire control panel to the detector.

In Write mode the fire control panel is able to write information to the detector by extending the communication method in the same way as in Read mode. During Read or Write modes a detector can signal an alarm by means of the alarm flag and alarm address bits.

Discovery detectors are compatible with XP95 and Soteria. It should be noted, however, that Discovery features will not be available when Discovery is used with XP95 fire control panels. Fire control panels with drift compensation algorithms should disable the algorithms when communicating with Discovery.

For fire control panels running CoreProtocol, please refer to the fire control panel manufacturer’s operating instructions.

Mounting Bases are sold separately (click here to see compatible bases)

Watch the Video


Key Features
> Ideal for a wide range of applications
> Enhanced false alarm management
> Recommended, in specific modes, for hotel bedrooms and hospital wards
> Unaffected by wind or atmospheric pressure
> Well-suited to sensitive environments
> Five EN 54 approved response modes
> Heat only and optical only options
> Remote test feature
> Drift compensation to ensure constant sensitivity
> Four bytes of user programmable non-volatile memory
> Alarm flag for fast alarm reporting
> Conventional alarm facility during CIE processor fault
> 360° visibility in alarm
> Compatible with XP95 and SOTERIA systems
> 

Mounting Bases are sold separately (click here to see compatible bases)


More Information
ManufacturerApollo Fire Detectors
MPN58000-700APO
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Specifications are given at 23°C and 50% relative humidity unless stated otherwise.
Product Code:58000-700
Detection Principle:Smoke: Photo-electric detection of light scattered by smoke particles - Heat: Temperature-dependent resistance
Supply wiring:Two-wire supply, polarity insensitive
Terminal Functions:L1 & L2: Supply in and out connections - +R: Remote indicator positive connection (Internal 2.2kΩ resistance to positive) - -R: Remote indicator negative connection (internal 2.2kΩ resistance to negative)
Operating Voltage:17-28V DC
Communication protocol:Apollo Discovery 5-9V peak to peak
Quiescent Current:400µA
Power-up surge current:1mA
Maximum power-up time:10 seconds
Alarm Current, LED illuminated:3.5mA
Remote output characteristics:Connects to positive line through 4.5kΩ (5mA maximum)
Clean-air analogue value:23 +4/-0
Alarm level analogue value:55
Alarm indicator:2 colourless Light Emitting Diodes (LEDs); illuminated red in alarm, Optional remote LED
Temperature Range:-40°C to +70°C
Humidity:0 to 95% relative ( No condensation or icing)
Effect of temperature:None
Effect of wind:None
Vibration, Impact & Shock:To EN54-7:2000
IP Rating:44 in accordance with BSEN60529
Dimensions (D x H): 100 x 50mm, 100 x 58mm (Height in Base)
Weight:Detector: 105g Detector In Base: 160g
Materials:Housing: White polycarbonate V-0 rated to UL94 - Terminals: Nickel plated stainless steel

Smoke Element Only:

Chamber configuration:Horizontal optical bench housing infra-red emitter and sensor, arranged radially to detect forward scattered light
Sensor:Silicon PIN photo-diode
Emitter:GaAlAs infra-red Light Emitting Diode
Sampling frequency:1 per second
Apollo Discovery Smoke & Heat Multisensor Detector - 58000-700APO