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THE MARINER
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Marine Duty Wind Speed Sensor
Description
The Mariner is a wind speed sensor designed specifically for long life in harsh ocean environments. Electrical and
mechanical failures are common with other popular 3-cup anemometers. To address these problems, a number of
important features should be noted. The electrical components are fully encapsulated with a urethane casting
compound. This casting compound was designed to meet US Navy specifications for operating electrical and
electronic components submersed in sea water.
The rotor shaft is manufactured from fully hardened beryllium copper that has a long history of successful use in salt and other
corrosive environments. Both rotor bearings are Rulon! - a reinforced Teflon! bearing with a low coefficient of
friction.
TECHNICAL SPECIFICATION:
Threshold: starting threshold - 0.75 m/s
(1.75 mph). Cup distance constant (63% recovery) - 3.0m (10 ft.)
Materials: Cups one-piece injection molded black polycarbonate (Lexan).
Body housing is ABS/PVC
Shaft is Fully hardened beryllium copper.
Bearings: modified Teflon!, self-lubricating.
Permanent magnet: 4 pole, plated Neodymium
Weight: 0.6 lb
Dimensions: 3 cups conical cross-section - 51 mm ( 2 in.) dia.
Swept diameter of rotor - 190 mm (7.5 in.) Overall height - 51 mm (3.2 in.).
Moment of Inertia of rotor assembly: 68 x 10-6 S - ft2
Mounting: using a cotter pin on a 13 mm (0.5 in.) diameter mast with a #35 hole 11 mm (.35 in.) from the top.
Electrical: dual redundant coils, bobbin wound, 4100 turns of #41 wire.
Voltage is a sine wave with frequency changing linearity with wind speed - 60Hz = 102 mph.
Voltage is 25 VAC @ 60 Hz
Environmental: Operating temperature -55 to 60° C (-67 to 150° F)
Operating humidity range: 0 - 100% RH.
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