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Related Manuals for Hochiki HF-24
Summary of Contents for Hochiki HF-24
- Page 1 HOCHIKI HF-24 FLAME DETECTOR USER MANUAL...
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Page 2: Table Of Contents
Hochiki HF-24 UV Flame Detector – Installation Manual Table of Contents Table of Contents UV Detection Basics Summary Comparison of Spectral Characteristics Structure of the UV tube Basic Operating Circuit of the UV Tube Mounting Locations Suitable for Mounting Locations Not Suitable for Mounting... -
Page 3: Uv Detection Basics
Hochiki HF-24 UV Flame Detector – Installation Manual UV Detection Basics Summary The ultraviolet type flame detector, which uses a UV tube, absorbs feeble ultraviolet light contained in flames and detects them in the form of a discharge pulse train with the help of the photoelectric effect and electron avalanche phenomenon. -
Page 4: Structure Of The Uv Tube
Hochiki HF-24 UV Flame Detector – Installation Manual Structure of the UV tube © 1995 Hochiki Europe (UK) Ltd DS0204/ISS1/DEC95... -
Page 5: Basic Operating Circuit Of The Uv Tube
Hochiki HF-24 UV Flame Detector – Installation Manual Basic Operating Circuit of the UV Tube Mounting Locations Suitable for Mounting Location where fire is strictly prohibited Location where there is a printing press Garage Film library School Department store Art museum... -
Page 6: Locations Not Suitable For Mounting
Hochiki HF-24 UV Flame Detector – Installation Manual Important cultural property Locations Not Suitable for Mounting Outdoors Location close to germicidal lamp based on UV rays Location where there is a machine which will produce electric sparks Location where welding jobs are carried out... -
Page 7: Detectable Area
Hochiki HF-24 UV Flame Detector – Installation Manual Detectable Area The detectable area depends on the distance from the detector to a flame as illustrated below. An alarm condition is produced when a required number of UV rays enter the UV tube, setting off the counter circuit. -
Page 8: Mounting Example
Hochiki HF-24 UV Flame Detector – Installation Manual Mounting Example The detector should be mounted above something on which you want to lay stress © 1995 Hochiki Europe (UK) Ltd DS0204/ISS1/DEC95... -
Page 9: Detector To Detector Distance
Hochiki HF-24 UV Flame Detector – Installation Manual Detector to Detector Distance In mounting more than one detector, the value of ‘R’ shown below is determined according to the detectable area mentioned in 2.2. Performance Check Approximately one second after the power supply is switched on, the detector which has been mounted reaches its’... -
Page 10: Maintenance & Inspection
Hochiki HF-24 UV Flame Detector – Installation Manual Ultraviolet lamps or similar means are used for making performance tests at a location where fire is strictly prohibited (this detector cannot be mounted at a location calling for any explosion proof means). If an ultraviolet lamp is used for testing purposes, then the lamp should have a maximum ultraviolet output @ 200nm. -
Page 11: Detector Specifications
Hochiki HF-24 UV Flame Detector – Installation Manual Detector Specifications Detectable Area Specification Ordering code; HF-24 Operating voltage: 15-30 Vdc (Nominal rating 24Vdc) Standby current: 200μA at 24Vdc Detection angle: 120° Cone UV sensitivity range: 185 to 260 nm Maximum current in alarm state:... -
Page 12: Compatible Bases
Web: www.hochikieurope.com Hochiki Europe (UK) Ltd. reserves the right to alter the specification of its products from time to time without notice. Although every effort has been made to ensure the accuracy of the information contained within this document it is not warranted or represented by Hochiki Europe (UK) Ltd.