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Specification
Supply
24Vac 50/60Hz or 24Vdc(-10 +15%)
Power consumption
62mA
Outputs:
Relay
SPST 1A @ 24Vdc, 120Vac
Analogue
2-10Vdc
Analogue status levels:
<2Vdc
Sensor fault
3-7Vdc
Normal operation
7-9Vdc
Optics require cleaning
>9.5Vdc
Smoke alarm
Minimum duct size
100 x 320mm
Maximum duct size
450 x 450mm
LED indication
ON in alarm
Reset
Manual or auto reset, selectable
Sensitivity
3 to 25% obscuration, adjustable
Signal damping
On/Off selectable
Housing:
Dimensions
130 x 68 x 58mm
Material
Glass-filled Polycarbonate to
UL94V-0
Probe:
Dimensions
300 x 25.5mm dia.
Material
ABS plastic
Protection
IP65 (housing only)
Ambient range:
Temperature
+10 to 40°C
RH
0 to 95% non-condensing
Country of origin
UK
UK Sales Tel: 0845 345 7253
Duct Smoke Detector
Features
Damped or un-damped output
Manual or auto reset
Analogue output for service diagnostics
Product Codes
SD-521
Duct smoke detector, 300mm probe
Page 1 of 3
Date Of Issue: 02/06/2010
© 2010 Sontay Limited. All rights reserved.
International Tel: +44 1732 861225
SD-521
Issue: 5.8

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Summary of Contents for Sontay SD-521

  • Page 1 SD-521 Issue: 5.8 Date Of Issue: 02/06/2010 © 2010 Sontay Limited. All rights reserved. Duct Smoke Detector Features • Damped or un-damped output • Manual or auto reset • Analogue output for service diagnostics Specification Product Codes Supply 24Vac 50/60Hz or 24Vdc(-10 +15%)
  • Page 2 Due to the self calibrating design of the detector as dust builds up on the optics the internal signal is increased to The SD-521 has a probe length of 300mm and should NOT compensate, this results in the detector maintaining be used in ducts with a diameter or square size greater than sensitivity during operation.
  • Page 3 For the latest information and product updates, register at www.sontay.com Whilst every effort has been made to ensure the accuracy of this specification, Sontay cannot accept responsibility for damage, injury, loss or expense resulting from errors or omissions. In the interest of technical improvement, this specification may be altered without notice.