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Apollo Series 65 Optical Smoke Detector

Apollo Series 65 Optical Smoke Detector with Flashing LED - 55000-316APO

Product Code: 55000-316APO

Customer Rating: 5 stars

Apollo Series 65 Optical Smoke Detector w/ Flashing LED - 55000-316APO Key Features

  • Includes Flashing LED: The integral LED flashes when the detector is in a quiescent state
  • Responds well to slow-burning, smouldering fires
  • Well-suited to bedrooms and escape routes
  • Unaffected by wind or atmospheric pressure
  • Wide-operating voltage of 9–33 V DC
  • Wide-operating and storage temperature of -20°C to +60°C
  • Can be used on security systems
  • Electrically and mechanically compatible with Series 60
  • Proven detection performance
  • Mounting Bases are sold separately (click here to see compatible bases)

Product Information

The Series 65 Optical Smoke Detector has a moulded self-extinguishing white polycarbonate case with wind resistant smoke inlets. Nickel plated stainless steel wiper contacts connect the detector to the base. Inside the case a printed circuit board has the optical system mounted on one side and the signal processing electronics on the other. The sensing chamber is a black moulding configured as a labyrinth which prevents penetration of ambient light. The labyrinth has a fine gauze insect-resistant cover. The chamber houses an infrared light emitting diode (LED) and a photo-diode which has an integral visible-light filter as extra protection against ambient light.

Every three seconds the LED emits a burst of collimated light, modulated at 4kHz. In clear air, light from the LED does not fall directly on the diode because the LED is positioned at an obtuse angle to the diode.

When smoke enters the chamber, a fraction of the collimated light is scattered onto the photo-diode. If the resulting signal from the photo-diode is above a preset threshold, the LED emits two more bursts of light, this time at two-second intervals. If light is scattered onto the photo-diode by both these pulses – due to the presence of smoke – the detector signals an alarm state by switching the alarm latch on, increasing the current drawn from the supply from about 40μA to a maximum of 75mA. This fall in the impedance of the detector is recognised by the control panel as an alarm signal.

The alarm current also illuminates the detector integral LED. A remote indicator connected between the L1 IN terminal and the –R terminal will have a voltage equal to the supply voltage less 1 volt across it and so will illuminate.

To ensure correct operation of the detector the control panel must be arranged to supply a maximum of 33 Volts dc and a minimum of 9 Volts dc in normal operation. The supply may fall to 6 Volts dc in alarm conditions if a supply current of at least 10mA is available at this voltage. To ensure effective illumination of the integral LED and any remote indicator, the supply to the detector should exceed 12 Volts.

To restore the detector to quiescent condition, it is necessary to expel any smoke and interrupt the electrical supply to the detector for a minimum of one second.

* Mounting Bases are sold separately (click here to see compatible bases)

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Technical Details

Specifications are given at 23°C and 50% relative humidity unless stated otherwise.

Product Code: 55000-316APO
Supply Wiring: Two wire monitored supply, polarity insensitive.
Supply Voltage: 9 to 33V DC
Ripple Voltage: 2V peak to peak maximum at 0.1Hz to 100kHz
Quiescent Current: 30-50μA at 24V
Switch-on Surge Current: 115μA at 24V
Alarm Voltage: 6 to 28V
Nominal Alarm Current: 61mA at 28V, 52mA at 24V, 18mA at 10V
Alarm Indicator: Clear light emitting diode (LED) emitting red light
Design Alarm Load: 420Ω in series with a 2V drop
Holding Voltage: 6V (min)
Holding Current: 10mA (min)
Minimum Voltage Required to Illuminate Indicator 12V
Alarm Reset Voltage: 1V
Alarm Reset Time 1 second
Remote Output Characteristics: Remote is a current sink to the negative line limited to 17mA
Sensitivity: : Nominal alarm threshold of 0/15dB/m obscuration, measure in accordance with EN 54-7:2007
Temperature Range: -20°C to +60°C (no condensation or icing).
Humidity: 0% to 95% relative humidity (no condensation)
Atmospheric Pressure: Insensitive to atmospheric pressure
Wind Speed: 10m/s maximum
IP Rating: 23D in accordance with BS EN 60529
Dimensions: 100 x 42 mm (100 x 50 mm in base)
Weight: 99g (150g in base)
Materials: Detector housing: White polycarbonate rate V-0 in accordance with UL 94. Terminals: Nickel played stainless steel.

Customer Reviews

  • from London Rating:5 stars

    Apollo detectors are still regarded as the best

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