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YOUNG Sentry Siktsensor

YOUNG Sentry™ siktsensor måler atmosfærisk synlighet (meteorologisk optisk rekkevidde) ved å bestemme mengde lys spredt av partikler i luften (røyk, støv, tåke, regn og snø).

  • God ytelse i alle værforhold er oppnådd med et design som holder alle kabler interne til sensoren for fullstendig beskyttelse mot farer
  • Benytter seg av "fremover spredning" (forward scattering), den mest nøyaktige og aksepterte siktemålingteknikken
  • Kalibrering utføres med en kalibreringsenhet som kan kjøpes med sensoren og er en enkel prosedyre som tar mindre enn 30 minutter


The YOUNG Sentry™ Visibility Sensor measures atmospheric visibility (meteorological optical range) by determining the amount of light scattered by particles in the air (smoke, dust, haze, fog, rain, & snow).

Performance in all weather conditions is achieved with an integrated design that keeps all cabling internal to the sensor for complete protection from hazards. The sensor is made from anodized aluminum and rugged, UV-resistant fiberglass enclosures. Based on the proven field experience of the NWS and FAA, the sensor uses a “look down” geometry to reduce window contamination and clogging from blowing snow. The optical windows have continuous duty anti-dew heaters. Optional thermostatically controlled external hood heaters are available for additional protection in extreme environments. All power and signal lines to the Sentry™ are protected with surge and EMI filtering to ensure uninterrupted service for the life of the sensor.

Installation and maintenance are simple with the Sentry™. A sturdy mounting flange located on the bottom of the main enclosure mates with a user-supplied 1-1/2 inch IPS mounting pipe. Power and signal cables are installed through waterproof cable glands on the bottom of the main enclosure to terminal boards for simple but reliable connections.

Calibration of the Sentry™ in the field is as simple as attaching a factory supplied calibration fixture and following a procedure that takes less than 30 minutes.

  • Visibility range: 30 m – 16 km
  • Accuracy: +/- 10% RMSE
  • Time constant: 60 sec
  • Scatter angle: 42 deg nominal
  • Output options: 0-10 VDC, 0-5 VDC, 4-20 mA (isolated option), RS-232, RS-422 or RS-485
  • Relay options: 2 control, 1 diagnostic
  • Power AC version: 100-240 VAC, 24 VA nominal; 75 VA w/ hood heating
  • Power DC version: 10-36 VDC, 6 VA nominal; 18 VA w/ hood heating
  • Operating temperature: -40 to + 60°C
  • Humidity: 0 to 100% RH
  • Protection: IP66 (NEMA-4X)
  • Weight: 8 kg
  • Dimensions: 889 mm x 292 mm x 305 mm
  • Mounting: 48 mm diameter pipe (optional 34 mm diameter)
  • Construction: Anodized aluminum frame; fiberglass, UV resistance enclosures
  • certifications: Compliance with Low Voltage Directives 73/23/EEC and 89/336/EEC as amended by Directive 93/68/EEC

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