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Discovery CO/Heat Multisensor Detector

Product code: 58000-305APO

58000-305APO - Discovery CO/Heat Multisensor Detector
The Discovery CO/Heat Multisensor Detector contains a CO detection cell 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 CO/Heat Multisensor detects the presence of carbon monoxide or heat or a combination of both. The Multisensor construction is similar to that of a CO detector but uses a different lid in order to expose the thermistor to the surrounding air. The signals from the CO sensing cell and the thermistor are independent and represent the amount of CO or the temperature present in the vicinity of the detector. When the detector is used in heat only mode (Mode 5) it operates as an A1R rate-of-rise heat detector with a static threshold of 58°C.
Full Details

Application Environments

Bedrooms

Hospitals

Hotels

Offices

University campuses

Warehouses

Brand Information

Discovery® is a range of high-specification, analogue addressable fire detectors and alarm devices. Discovery detectors offer effective false alarm management by a combination of EN 54 approved operating modes and sophisticated algorithms. Drift compensation further reduces the likelihood of false alarms caused by a build-up of dust in the sensing chamber. In addition to the familiar smoke and heat detectors, the Discovery range features two multisensor detectors. One is an optical/heat multisensor which can be used to protect against many types of fire risk. The other is a carbon monoxide/heat multisensor which protects against both smouldering fires and those generating heat.

Operation

Discovery detectors are designed to be operated with purpose-designed control and indicating equipment that makes full use of their features. Discovery can, however, be connected to any fire control panel which can operate existing ranges of Apollo analogue addressable detectors with the previously noted rule, that the control and indicating equipment must not have a drift algorithm operating on Discovery devices. Contact the fire control panel manufacturer for guidance.

Device Addressing

Mode 1 has very high sensitivity to carbon monoxide combined with moderate sensitivity to heat. This gives a high overall sensitivity to both smouldering and flaming fires. Mode 2 is set to report the presence of carbon monoxide only. Mode 3 has moderate sensitivity to carbon monoxide combined with moderate sensitivity to heat and is used for general applications. Mode 4 has lower than normal carbon monoxide sensitivity combined with moderate heat sensitivity making it suitable to areas where a certain amount of carbon monoxide might be considered normal. Mode 5 has no response at all to carbon monoxide and acts as a rate-of-rise heat detector. Notes: 1. If the Multisensor is to be used in mode 5 heat detector spacing & coverage should be applied. Observe the recommendations of BS 5839-1 or other applicable code. 2. The notes on carbon monoxide detectors on pages 16-17, particularly concerning application, limitations and precautions, should be read carefully. 3. In situ testing of the multisensor detector should be carried out as for CO detectors in response mode 2 and for heat detectors in response mode 5. Both CO and heat sensors must be tested in modes 1, 3 and 4. 4. The CO/Heat Multisensor Detector cannot be tested with Discovery Test Set.

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.

Maintenance & Service

Detectors should be maintained according to BS 5839- or other locally applicable code. Test equipment can be ordered from Apollo for testing smoke and heat detectors. Detectors should not be cleaned in the field except for careful removal of exterior dirt with a damp cloth. For cleaning and recalibration detectors should be returned to Apollo Fire Detectors or to the local distributor.

EMC Directive 2014/30/EU

The Discovery CO/Heat Multisensor Detector complies with the essential requirements of the Construction Products Regulation 305/2011.

Construction products regulation 305/2011

The Discovery CO/Heat Multisensor Detector complies with the essential requirements of the Construction Products Regulation 305/2011/ EU. A copy of the Declaration of Performance is available from the Apollo website: www.apollo-fire.co.uk

Product Information

The Discovery CO/Heat Multisensor Detector contains a CO detection cell 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 CO/Heat Multisensor detects the presence of carbon monoxide or heat or a combination of both. The Multisensor construction is similar to that of a CO detector but uses a different lid in order to expose the thermistor to the surrounding air. The signals from the CO sensing cell and the thermistor are independent and represent the amount of CO or the temperature present in the vicinity of the detector. When the detector is used in heat only mode (Mode 5) it operates as an A1R rate-of-rise heat detector with a static threshold of 58°C.

Key Features

Responds to smouldering and flaming fires Less susceptible to false alarms caused by steam and dust Five response modes Remote test feature

General
Applications
  • Bedrooms
  • Hospitals
  • Hotels
  • Offices
  • University campuses
  • Warehouses
Fire TypeFast and slow burning fires
Warranty5 year
Performance
Analogue value nominal2
Analogue value (- tolerance)2
Analogue value (+ tolerance)2
Analogue value25 +2/-2
Alarm level analogue value55
Electrical
Protocol voltage (min)5V
Protocol voltage (max)9V
Protocol voltage5 to 9V peak to peak
Power-up surge current 1mA
Maximum power-up time10 seconds
Status indicator - AlarmRed
Quiescent current400μA
Quiescent current tested at24V dc
Sampling frequency+L2 Loop in & out positive
Terminal functions L1 in-L1 in Loop (isolated) negative
Terminal functions +R+R Remote indicator positive connection
Terminal functions -R-R Remote indicator negative connection
PolarityL1 & L2 are polarity sensitive
Alarm current (at 24 volts)3.5mA
Environmental
Humidity (min)15% RH
Humidity (max)90% RH
Humidity Noteno condensation or icing
Humidity15% to 90% (no condensation or icing)
Operating temperature (min)0°C
Operating temperature (max)50°C
Operating temperature0 to 50°C
IP rating ValueIP44
Storage temperature (min)10°C
Storage temperature (max)30°C
Storage temperature10 to 30°C
Conformance
StandardsEN 54-5
Approvals
  • CPR
  • LPCB
  • VNIIPO
  • VdS
Mechanical
Weight105g
ColourWhite
Materials housingPolycarbonate
Materials terminalsNickel plated stainless steel
Product length54mm
Product diameter100mm
Detection principle
  • Temperature sensitive resistance.
  • Ambient carbon monoxide level.
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