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400-73000 Sentry Visibility Sensor

400-73000 Sentry Visibility Sensor
400-73000 Sentry Visibility Sensor
The 400-73000 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, and snow).
Product Details

The 400-73000 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, and 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.

Specifications

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
4-20 mA Isolated
RS232, RS422 or RS485

Relay Options:
2 Control
1 Diagnostic

Power:
AC Version:
100-240 Vac, 24 VA Nominal
75 VA with hood heating
DC Version:
10-36 Vdc, 6 VA Nominal
18 VA with hood heating

Operating Temperature: -40 to +60 C
Humidity: 0 to 100% RH
Protection: IP66 (NEMA-4X)

Weight: 8 kg (18lb)
Dimensions: (WxHxD)
889 mm x 292 mm x 305 mm
35" x 11.5" x 12"
Mounting: 48 mm (1.9 inch) diameter (standard 1.5 inch IPS pipe)
Optional: 34 mm (1.3 inch) diameter (standard 1 inch IPS pipe)
Construction:
Frame: Anodized Aluminum
Enclosures: Fiberglass, UV Resistant
Certifications: This equipment is in compliance with the essential requirements and other provisions of Low Voltage Directives 73/23/EEC and 89/336/ EEC as amended by Directive 93/68/EEC.

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