User manual VAISALA WA25 DATASHEET

[. . . ] www. vaisala. com WA25 Wind Set Heating power is also supplied to the sensor shafts, bearings and bodies. This keeps the sensor bodies free of ice, which is important for maintaining the aerodynamic performance. Anemometer with excellent linearity The WAA252 is a fast-response, low-threshold anemometer. [. . . ] Turned by the vane, the disc creates changes in the code received by the phototransistors. The code is changed in steps of 5. 6°. Heating provides resistance to snow and ice Most of the heating power is consumed where it is needed most ­ in the cups and vane. Foil heaters, integrated into the cups and vane, prevent snow buildup and ice formation. Complete package available The anemometer and vane are designed to be mounted on Vaisala crossarms. Technical data Vaisala Wind Set WA25 Features/Benefits Non-freezing, high-performance wind set Cups and vane, sensor bodies and bearings are heated to prevent snow buildup and ice formation Accurate wind speed and direction measurement Low measurement starting threshold Conical anemometer cups provide excellent linearity Options and accessories Crossarm and termination box 16-lead signal cable 6-lead power cable Crossarm and analog transmitter 6-lead cable for signal and power Power supply Set of bearings and gasket Heated cup assembly Heated tail assembly WAC151 ZZ45048 ZZ45049 WAT12 ZZ45049 WHP25 16644WA WA35066 WA35336 Technical data Vaisala Anemometer WAA252 Wind speed Measurement range 0. 4 . . . 75 m/s Starting threshold < 0. 5 m/s * Distance constant 2. 7 m Characteristic transfer function U = 0. 39 + 0. 10 × R (where U = wind speed [m/s], R = output pulse rate [Hz]) Accuracy (within range 0. 4 . . . 60 m/s) with characteristic transfer function ± 0. 17 m/s ** with transfer function U = 0. 1 × R ± 0. 5 m/s *** Vaisala Wind Vane WAV252 Wind direction Measurement range Starting threshold Resolution Damping ratio Overshoot ratio Delay distance Accuracy 0 . . . 360° < 0. 4 m/s ±2. 8° 0. 3 0. 4 < 0. 5 m better than ±3° General Operating power supply Uin = 24 VDC ± 10%, max. 3. 2 A Typical power consumption (Uin = 24 VDC) 72 W below +2 °C (+36 °F) (heating on) 1 W above +6 °C (+43 °F) (heating off) Output 0 . . . 750 Hz square wave Transducer output level high state > 11V with Iout < +5 mA low state < 1. 5V with Iout > ­5 mA Plug 6-PIN MIL-C-26482 type Recommended connector at cable end SOURIAU MS3116F10-6P Operating temperature -55 . . . +131 °F) Storage temperature -60 . . . +158 °F) Material housing AlMgSi, grey&black anodized cups PC, reinforced with glassfibre Dimensions 264 (h) × 90 (Ø) mm Swept radius of cup wheel 91 mm Weight 800 g General Operating power supply 24 VDC ± 10%, max. 2. 1 A Typical power consumption (Uin = 24 VDC) 50 W below +2 °C (+36 °F) (heating on) 1 W above +6 °C (+43 °F) (heating off) Output code 6-bit parallel GRAY Output levels high state > 11V With Iout < +3 mA low state < 1. 5V With Iout > ­3 mA Plug 10-PIN MIL-C-26482 type Recommended connector at cable end SOURIAU MS3116F12-10P Operating temperature -55 . . . +131 °F) Storage temperature -60 . . . [. . . ] The reproduction, transfer, distribution or storage of information contained in this brochure in any form without the prior written consent of Vaisala is strictly prohibited. All specifications -- technical included -- are subject to change without notice. [. . . ]