Design and Manufacture of Innovative Electronic Instruments and Controls for the Power and Gas Utilities Since 1978

WIND BEARING TRANSDUCER

The Demico Wind Bearing Transducer (WB) is designed to accurately monitor wind directions throughout your Generation, Transmission, and Distribution system. The wind bearing system has a low profile, flush mounted interface enclosure which can be mounted in an RTU cabinet, or substation house. A sturdy ABS wind vane with shielded sleeve bearings is included which senses the direction of slight breezes as well as hurricane gales up to 200 mph. Standard AC and DC power supplies are available.

The WB series of transducers are available with seven AC and DC power supply ranges. The standard analog output is 0 to 1 milliamp for a burden resistance from 0 to 10,000 ohms. The WB series has galvanic, or ohmic, isolation between the power supply input and analog output. Each WB is factory tested for isolation exceeding 1500 VACbetween these two sets of terminals. The non-conductive phenolic case mounts easily with two screws, and the terminal strips have built in wire clamps for quick and reliable connections. The label clearly indicates the numbered input and output terminals for easy installation. The wind vane easily mounts on a user supplied ” rod or post and should be mounted at least 10 feet from large obstructions and at a height of 6’ or more for best accuracy. Care should be taken not to mount the wind vane where exhaust fans, road traffic, or other sources of air flow will affect the readings.

This transducer is designed for use in the electrically noisy substation environment and meets the surge withstand requirements of ANSI 37.90.1-1989. The manufacturing process for Demico Transducers include:

1. Printed circuit boards are coated with a polyurethane coating.

2. Every transducer is burned in for 100 hours at 110degrees F.

3. Power is cycled every 12 hours during burn in.

4. Every transducer passes a 1500 VAC isolation test before final testing. Demico takes these steps to ensure that our transducers provide good service over a long life.Demico’s standard one year warranty includes parts and labor.

Two output scalings are available for the zero to one milliamp output. One is scaled linearly from 0 to 360 degrees. The other has a hysteresis function built into the output. Click on each of  the graphs below for detailed explanations, model numbers and pricing.