Back

Discovery Carbon Monoxide Detector

Product code: 58000-300APO

58000-300APO - Discovery Carbon Monoxide Detector
Discovery CO fire detectors contain a long-life electro-chemical carbon monoxide sensor which is tolerant of low levels of common vapours and household products. The sensing technology is fast, accurate and needs only very low power. The detection capabilities are enhanced by a rate-sensitive response. Fast rises in the carbon monoxide level are often associated with hot fires and the detector will respond earlier under these conditions. The analogue reply from the detector is rate limited to remove nuisance alarms resulting from short-term high levels caused by sources such as pipe smokers or gas flame ignition.
Full Details

Application Environments

Hotels

Bedrooms

Hospitals

Medium to large buildings

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

The Discovery CO detector has five operating modes, each having a set combination of sensitivity and response delay, which the user can select for any given application.

Application

CO detectors do not detect smoke particles or heat and are not universal replacements for smoke detectors. Apollo does not endorse the use of CO detectors as the main method of fire detection if: • the protected area is an escape route • there is a requirement to detect overheating of electrical equipment or cables • the protected area is exposed to sources of CO such as vehicle exhausts, or to hydrogen or to high levels of alcohol vapour as emitted by some cleaning agents • there is a requirement to detect fires involving flammable liquids CO fire detectors are particularly suitable for supplementing smoke detection when there is: • a deep seated smouldering fire risk • a risk of fire starting in an enclosed space • a likelihood of stratification taking place Carbon monoxide detectors may be used as the primary fire detector in areas where the following conditions exist: • the main risk is smouldering fires • optical smoke detectors are deemed unsuitable (see ‘FALSE ALARMS’ below) • the fire compartment is not greater than 50m2 Typical applications include hotel bedrooms, halls of residence, sheltered accommodation and hospital wards.

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

The electrochemical cell used in the Discovery CO fire detector has a more limited life than would normally be expected from a smoke detector. In a typical environment, the life of the cell is five years. High temperature or low relative humidity can, however, reduce the life significantly. The limits given in the section ‘TECHNICAL DATA’ overleaf should be carefully observed. It is essential that systems using CO fire detectors be correctly maintained and that the maintenance schedule include functional testing of the CO fire detectors. CO fire detectors will not respond to the aerosol testers commonly used for the in-situ testing of smoke detectors. The Apollo (No Climb) detector tester with a CO test gas canister can be used to test CO detectors. If there is any doubt over the sensitivity of a Discovery CO fire detector it should be returned to Apollo for servicing and calibration.

EMC Directive 2014/30/EU

The Discovery Carbon Monoxide Detector complies with the essential requirements of the Construction Products Regulation 305/2011.

Construction products regulation 305/2011

The Discovery Carbon Monoxide 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

Additional Information

Detector siting CO fire detectors should be sited using the recommendations from BS 5839-1 (or other applicable code). In the development of a fire, smoke and CO in the smoke plume is spread by convection to a fire detector. As CO is a gas, it further spreads—like smells—by diffusion. For this reason CO may reach a detector faster than smoke would. This potential advantage can be exploited when designing a fire protection system and CO detectors may be used for supplementary detection. Equally, the opposite effect might occur, with CO moving away from a detector. The behaviour of CO is therefore unpredictable and diffusion should not be relied on when designing a fire protection system. False alarms Carbon monoxide detectors are less susceptible than smoke detectors to false alarms from sources such as toast, steam, cooking, plumbing work and hair spray. They may therefore be used in some applications in which smoke detectors would be usceptible to unwanted alarms. Conversely, they may be more susceptible than smoke detectors to false alarms from fumes containing CO, such as vehicle exhausts, open fires and gas appliances. Notes: 1. Discovery CO detectors should not be used with isolating base 45681-321. Use 45681-284. 2. It is necessary to wait 30s after power-up to receive valid data from the CO detector.

Options

Carbon monoxide detectors also have important limitations. They are set to a higher sensitivity than the maximum allowed by the domestic CO alarm standard and will respond to CO from faulty gas appliances or vehicle exhausts. These detectors should not be used in place of carbon monoxide alarms complying with BS 7860 or UL 2034.

Safety Note

This product contains a sealed electro-chemical cell and in normal usage represents no chemical hazard in the sense of COSHH and the Health and Safety at Work Act 1974. Chemical hazard can, however, arise if the following notes on storage, handling and disposal are not observed. For maximum life, the product should be stored before installation in clean dry conditions between 0°C to 20°C. It should not be exposed to temperatures outside the range –40°C to 55°C or to organic vapours. The electrochemical cell contained in this product is fitted into sockets on the printed circuit board; to avoid damage to the cell do not remove it. The electrochemical cell contains sulphuric acid in a relatively concentrated state. In the event of leakage (which may be caused by mechanical damage or use outside the operating specification for the cell) the cell should be removed from the detector using protective gloves. Avoid contact with any liquid. If skin or eye contact with the electrolyte occurs, wash immediately with plenty of water and obtain medical advice. All traces of electrolyte should be washed away with copious amounts of clean water. The cell should be disposed of according to local waste management requirements and environmental legislation. It should not be burnt since it may release toxic fumes.

Additional Information 1

Drift compensation In view of the inherent stability of CO cells, there is no need for Discovery CO detectors to compensate for drift. Discovery CO detectors are set to report a drift value of 16. Cell test The Discovery carbon monoxide fire detector has a remote test feature, which is used to verify that the electro-chemical cell is fitted and that it is active. A test must be carried out at least once a year but preferably more frequently to ensure that the cell has not dried out. (Note that the cell will not be affected by the test, even if the remote test is carried out once a day.) If the test indicates a sensor failure, i.e. the detector returns a pre-set analogue value of 25, the detector should be sent to Apollo’s Service Department for cell replacement and detector recalibration. When carrying out the cell test observe the 30s delay referred to above. Precautions when investigating alarms It is important to remember that CO is a colourless, odourless gas, which is not directly detectable by human senses. If a CO fire detector is in an alarm condition, it is possible that a dangerous level of CO exists around the detector. Extreme care must be taken when investigating alarms from CO fire detectors even if no combustion products can be seen or smelled. Because of this danger, it is imperative that CO fire detectors are correctly identified at the fire control panel so that personnel investigating alarms may take the relevant precautions.

Product Information

Discovery CO fire detectors contain a long-life electro-chemical carbon monoxide sensor which is tolerant of low levels of common vapours and household products. The sensing technology is fast, accurate and needs only very low power. The detection capabilities are enhanced by a rate-sensitive response. Fast rises in the carbon monoxide level are often associated with hot fires and the detector will respond earlier under these conditions. The analogue reply from the detector is rate limited to remove nuisance alarms resulting from short-term high levels caused by sources such as pipe smokers or gas flame ignition.

Key Features

Enhanced detection capability Ideal for smouldering fires Less susceptible to false alarms caused by steam than smoke detectors Five response modes Remote test feature

General
Applications
  • Hotels
  • Bedrooms
  • Hospitals
  • Medium to large buildings
  • Offices
  • University campuses
  • Warehouses
Fire TypeSlow burning, smouldering fires
Warranty5 year
Performance
Analogue value nominal2
Analogue value (- tolerance)2
Analogue value (+ tolerance)2
Analogue value25 +2/-2
Alarm level analogue value55
Chamber typeChevron
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 current500μA
Quiescent current tested at24V dc
Sampling frequency+L2 Loop in & out positive
Terminal functions L1 in-L1 in Loop in & out, double terminal
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)90% RH
Humidity (max)15% RH
Humidity Noteno condensation or icing
Humidity90% to 15% (no condensation or icing)
Operating temperature (min)0°C
Operating temperature (max)50°C
Operating temperature0 to 50°C
IP rating ValueIP54
Storage temperature (min)30°C
Storage temperature (max)10°C
Storage temperature30 to 10°C
Mechanical
Weight105g
ColourWhite
Materials housingPolycarbonate
Materials terminalsNickel plated stainless steel
Product length42mm
Product diameter100mm
Detection principleAmbient carbon monoxide level.
Information icon
Please Log in or register for unlocked and editable PDFs, BIM Objects and Product Images.
Declaration of Conformity
How to Order

Apollo is dedicated to ensuring that our customer service is aligned with your expectations. This includes making our order, service and delivery process a seamless and hassle-free experience.

Full details of our service standards can be downloaded here.

Existing customers

Please email your order to us at: ukorders@apollo-fire.com or tel: 023 9245 6530.

New customers

Please email your order to us at: sales@apollo-fire.com or tel: 023 9244 2700.

Oops…

Despite our best efforts, mistakes sometimes happen. Please contact us at: orderqueries@apollo-fire.com if you have any difficulties placing your order.

Please note…

Remember to quote your account number and purchase order number on any order correspondence.

All orders must be over £50.00 (excluding carriage). Any orders received under the minimum order value will be returned to sender for revision.