200-1230 Series Hand Held Wind Speed Calibrators
200-1249-A Wind Direction Calibrator
200-8297 Surveying Compass with Telescope
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| 200-1233 Hand Held Wind Speed Calibrator | 200-1249-A Wind Direction Calibrator |
Two types of Wind Speed Calibrators are available in the 200-1230 Series. The first type, including 200-1234-A, 200-1235-A, and 200-1236-A, is designed for tower calibration of Micro Response and Low Threshold Anemometers. The calibrator mounts directly on the anemometer shaft and rotates the shaft at a known rate using a constant speed motor. The unit requires 115 Vac for operation. The 200-12341 Power Cable can be used to connect the calibrator to the power supply of a 380-8150 Series Solar Radiation Shield.
The second type of wind speed calibrator is more suited to laboratory or bench calibration applications. This type, including 200-1230, 200-1231, and 200-1233, is attached to the anemometer shaft by neoprene tubing. The calibrator must be supported near the anemometer. The constant speed synchronous motor driving these units requires 115 Vac 60 Hz. On special order, 230 Vac 50 Hz models can be supplied; however, the rotation rate will be lower due to the lower input frequency.
The 200-1249-A Wind Direction Calibrator is a mechanical device used to calibrate systems which include Micro Response or Low Threshold Wind Vanes (200-2020 or 200-2005). It mounts directly on the vane and has three possible uses. First, it can be used to position the vane at four points, exactly 90° apart, to check the readings of output devices. Second, it can be used in sigma system calibration to give a direction change of exactly 90°. And third, it can be used to hold the vane tail in place during orientation to north. A similar mechanical device, 200-1247, is available to assist in wind direction calibration of the Skyvane wind sensor.
Wind direction sensors must be oriented to true north to provide accurate data. This is easily accomplished using the 200-8297 Surveying Compass with Telescope. In use, the compass is positioned directly north or south of the sensor and used to sight the vane tail or scribe lines on the sensor base. The sensor mounting position is then adjusted until alignment is established.
The 200-8297 is a precision surveying compass. A telescope with precision optics and 10x magnification gives an erect image of distant objects to aid in orientation of lines of sight where there are distant reference points. Full vertical and horizontal control is provided by fine adjustment knobs. The 200-8298 Adjustable Aluminum Tripod is recommended for use with the 200-8297. The tripod's legs extend from 21 to 52 inches.
Ordering Information
200-1230 Hand-Held Wind Speed Calibrator, 300 rpm (250 rpm at 50 Hz)
200-1231 Hand-Held Wind Speed Calibrator, same as 200-1230 except 1800 rpm (1500 rpm at 50 Hz)
200-1233 Hand-Held Wind Speed Calibrator, same as 200-1230 except 600 rpm (500 rpm at 50 Hz)
Consult NovaLynx for price and availability of the 200-1234-A, 200-1235-A, and 200-1236-A calibrators.
200-1247 Wind Direction Calibrator, for use with Skyvane
200-1249-A Wind Direction Calibrator, for use with 200-2005 or 200-2020 Vane
200-8297 Surveying Compass with Telescope
200-8298 Tripod for 200-8297
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Wind Speed & Direction Sensors
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