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Summary of Contents for Ampac Orbis
- Page 1 Orbis Australian Product Guide MAN 1509...
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Page 2: Table Of Contents
Chossing a Detector: Questions and Answers ..............3 Where to use optical smoke detectors ................5 Orbis optical smoke detector ..................5 How does the orbis optical detector work? ..............5 Environmental performance ..................5 Technical Data ......................6 Where to use multisensor smoke detectors ............... 7 Orbis MultiSensor smoke detector ................ -
Page 3: About This Manual
False alarms are reduced with Transient Rejection which filters out transient high readings that might otherwise cause a false alarm. Orbis is an entirely new range with modern styling and a completely revised mounting base. It is electrically compatible with Series 60 and Series 65 ranges of conventional detector. -
Page 4: Range Of Products
Relay base Features of ORBIS Orbis incorporates entirely new designs, both mechanical and electronic. The aim has been to increase the attractiveness of the detector, make installation quicker, enhance the reliability of detection and reduce the incidence of false alarms. -
Page 5: Chossing A Detector: Questions And Answers
ORBIS AUSTRALIAN PRODUCT GUIDE Choosing a Detector: Questions and Answers Question: The Orbis range does not include an ionisation smoke detector. Are ionisation detectors redundant? Answer: Ionisation detectors have been used for many years as extremely reliable smoke detectors. They have traditionally been recommended for use where the fire risk is likely to include very small-particle smoke. - Page 6 ‘m’ on the y axis. Detectors must respond before the end of test which is an ‘m’ = value of 2. The performance of Orbis detectors is given as a solid line which shows how evenly the optical detectors respond to the test fires.
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Page 7: Where To Use Optical Smoke Detectors
The performance of Orbis optical detectors is good in black as well as in white smoke. In this respect Orbis is different from traditional optical smoke detectors which perform far better in white smoke than in black. -
Page 8: Technical Data
ORBIS AUSTRALIAN PRODUCT GUIDE Technical Data All is supplied subject to change without notice. Specifications are given at 23°C and 50% relative humidity unless otherwise stated. DETECTOR OPERATING PRINCIPLES Principle of detection: Photo-electric detection of light scattered by smoke particles over a wide range of angles. -
Page 9: Where To Use Multisensor Smoke Detectors
The MultiSensor smoke detector is a thermally enhanced smoke detector and as such will not give an alarm from heat alone. It is a development of the Orbis optical detector described in the previous chapter and goes further in its capabilities of fire detection. -
Page 10: Technical Data
ORBIS AUSTRALIAN PRODUCT GUIDE Technical Data All data is supplied subject to change without notice. Specifications are given at 23°C and 50% relative humidity unless otherwise stated. DETECTOR OPERATING PRINCIPLES Principle of detection: Photo-electric detection of light scattered by smoke particles over a wide range of angles. -
Page 11: Where To Use Heat Detectors
CS (Static) How do orbis heat detectors work? Orbis heat detectors have an open web casing that allows air to flow freely across a thermistor which measures the air temperature every 2 seconds. A microprocessor stores the temperatures and compares them with pre-set values to determine whether a fixed upper limit, the alarm level, has been reached. -
Page 12: Technical Data
ORBIS AUSTRALIAN PRODUCT GUIDE Technical data All data is supplied subject to change without notice. Specifications are given at 23°C and 50% relative humidity unless otherwise stated. DETECTION OPERATING PRINCIPLES Principle of detection: Measurement of heat by means of a thermistor. -
Page 13: Orbis Detector Bases
There are a number of bases available within the Orbis range of detectors. Orbis TimeSaver Base – is the standard base Orbis TimeSaver LX Base – incorporates all of the features of the standard Orbis base less the continuity link ... -
Page 14: Installing Orbis
The E-Z fit fixing holes are shaped to allow a simple three-step mounting procedure: Fit two screws to the mounting box or surface Place the Orbis base over the screws and slide home Tighten the screws The base offers two fixing centres at 51 and 60mm. -
Page 15: Unlocking The Detector
Non Locking Base Conversion If the locking mechanism of the Orbis TimeSaver base has been activated in error the base may be converted to a permanently non-locking base by removing the detector and cutting out the small portion of the rim marked with a cross-hatch as shown below. -
Page 16: Fitting Orbis Detector Heads
ORBIS AUSTRALIAN PRODUCT GUIDE Fitting Orbis detector heads When the bases have been installed and the system wiring tested, the detector circuits can be populated. Two methods are suggested: Apply power and fit the detectors one by one, starting at the base nearest the panel and working towards the end of the circuit. -
Page 17: Orbis Features: Led Status
ORBIS AUSTRALIAN PRODUCT GUIDE Orbis Features: LED status Feature Description of Feature Red LED Status Yellow LED Status Confirms that the detectors Flashes once per second for StartUp are wired in the correct No Flash 4 minutes polarity Maintenance procedure,... -
Page 18: Commissioning Made Easy
Orbis detectors incorporate a test facility known as FasTest®. In normal operation Orbis smoke detectors do not change to the alarm state at the first sensing of smoke. If they did, they could be too sensitive and cause false alarms. Algorithms determine the point at which the detector changes to alarm. -
Page 19: Maintenance And Testing
Ampac recommends that detectors be checked at least once a year. One of the features of Orbis is FasTest® which makes it possible to carry out a functional test, using smoke or heat, within about four seconds. NOTE: Refer MAN3046 Ampac Detector Cleaning, Maintenance, and Functional Test Procedures for correct equipment and methods for testing. -
Page 20: Item Numbers & Description
ORBIS AUSTRALIAN PRODUCT GUIDE Item Numbers & Description Ampac Item Number Description Detectors ORBIS HEAT DETECTOR AIR BR (type A –rate of rise) 201-0500 201-0504 ORBIS HEAT DETECTOR AIR A2S (type B) 201-0508 ORBIS HEAT DETECTOR CR (type C rate of rise) - Page 21 NOTES:...
- Page 22 .am p ac.n et Web: w w w .am p ac.n et (HEAD OFFICE) Assessed to ISO9001 LPCB ref. no 952 (AMPAC Europe) UNCONTROLLED DOCUMENT NOTE: Due to AMPAC’s commitment to continuous improvement specifications may change without notice.
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