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HOCHIKI HF-24

FLAME DETECTOR

USER MANUAL

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Содержание HF-24

Страница 1: ...HOCHIKI HF 24 FLAME DETECTOR USER MANUAL ...

Страница 2: ...ic Operating Circuit of the UV Tube 5 Mounting 5 Locations Suitable for Mounting 5 Locations Not Suitable for Mounting 6 Detectable Area 7 Mounting Example 8 Detector to Detector Distance 9 Performance Check 9 Maintenance Inspection 10 Cleaning 10 Performance Check 10 Detector Specifications 11 Detectable Area 11 Specification 11 Compatible Bases 12 1995 Hochiki Europe UK Ltd DS0204 ISS1 DEC95 ...

Страница 3: ...train with the help of the photoelectric effect and electron avalanche phenomenon The detector has a counter circuit which prevents malfunctions from taking place because of single shot or momentary UV rays such as lightening and cosmic radiation Comparison of Spectral Characteristics Curve 1 Response of UV tube Curve 2 Sunlight Curve 3 Sensitivity of the human eye Curve 4 Tungsten filament lamp 1...

Страница 4: ...4 Hochiki HF 24 UV Flame Detector Installation Manual Structure of the UV tube 1995 Hochiki Europe UK Ltd DS0204 ISS1 DEC95 ...

Страница 5: ...cations Suitable for Mounting Location where fire is strictly prohibited Location where there is a printing press Garage Film library School Department store Art museum VTR room Factory Hospital Warehouse Storage for critical materials Computer data room Hotel 1995 Hochiki Europe UK Ltd DS0204 ISS1 DEC95 ...

Страница 6: ...on where there is a machine which will produce electric sparks Location where welding jobs are carried out Location involving frequent vibrations and shocks Location which will generate corrosive gas Location calling for any explosion proof means Location where there is a source of radiation Location which tends to gather dust or oil film 1995 Hochiki Europe UK Ltd DS0204 ISS1 DEC95 ...

Страница 7: ...ble 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 1995 Hochiki Europe UK Ltd DS0204 ISS1 DEC95 ...

Страница 8: ...8 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 ...

Страница 9: ...r supply is switched on the detector which has been mounted reaches its normal operating condition Make flames within the detectable area using a candle or a lighter and confirm that an alarm is produced within 5 to 30 seconds in the area approximately 3m apart from the sensor The flame of a candle or a lighter should satisfy the requirements shown below Performance tests should be carried out in ...

Страница 10: ...ance Inspection Cleaning Any built up dust or oil film on the surface of the UV tube will significantly reduce its sensitivity The exposure of the UV tube should be cleaned at its surface at regular intervals half yearly under normal environments In cleaning take care that no undue force is applied to the UV tube Performance Check In addition to the soils above there may be something like larvae a...

Страница 11: ...c Nominal rating 24Vdc Standby current 200μA at 24Vdc Detection angle 120 Cone UV sensitivity range 185 to 260 nm Maximum current in alarm state 250mA without base Operating temperature range 10 C to 50 C Maximum humidity 95 RH Non condensing at 40 C Colour and case material Ivory ACS Weight 150g 210g with base 1995 Hochiki Europe UK Ltd DS0204 ISS1 DEC95 ...

Страница 12: ...al zone of up to 6 CD range detectors and bases only one HF 24 and no other detectors may be used Alarm control panel compatibility is required for certain base types Hochiki Europe UK Ltd Grosvenor Road Gillingham Business Park Gillingham Kent ME8 0SA England Telephone 44 0 1634 260133 Facsimile 44 0 1634 260132 Email sales hochikieurope com Web www hochikieurope com Hochiki Europe UK Ltd reserve...

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