User manual VAISALA WAC151

[. . . ] 8 Recommended Mast Location in Open Area. . . . . . . . . . . . 9 Recommended Mast Length on Top of a Building. . 10 Cable Shield Bent over the Plastic Sleeve and O-ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Mounting WAC151 to the Top of a Pole Mast . . . . . . . . [. . . ] To make sure you are not delivering high static voltages yourself: - Handle ESD sensitive components on a properly grounded and protected ESD workbench. When this is not possible, ground yourself to the equipment chassis VAISALA___________________________________________________________5 User's Guide ________________________________________________________ before touching the boards. Ground yourself with a wrist strap and a resistive connection cord. When neither of the above is possible, touch a conductive part of the equipment chassis with your other hand before touching the boards. - Always hold the boards by the edges and avoid touching the component contacts. Warranty For certain products Vaisala normally gives a limited one year warranty. Please observe that any such warranty may not be valid in case of damage due to normal wear and tear, exceptional operating conditions, negligent handling or installation, or unauthorized modifications. Please see the applicable supply contract or conditions of sale for details of the warranty for each product. 6 ______________________________________________________ M210349en-A Chapter 2 ____________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces WAC151 Cross Arm features. Introduction to WAC151 Cross Arm The WAC151 Cross Arm assembly supports the installation of the Vaisala WAA151 Anemometer and WAV151 Wind Vane, or WAA252 Heated Anemometer and WAV252 Heated Wind Vane. The cross arm assembly consists of a junction box and an anodized aluminum tube construction with a mounting clamp for installation on the top of a pole mast. A water tight junction box includes a screw terminal block for connection of the power and signal cables. Inside the junction box, there is also a thermostat switch for controlling sensor shaft heating for the 151 series sensors. The thermostat switch connects the heating power in temperatures below +4 °C. The 252 series sensors do not use the cross arm's thermostat switch, as they have the temperature control integrated in the sensor's electronics. The junction box is equipped with four cable glands offering easy connection to different cables. Typically, three cable glands are in use; two for sensor cables and one for signal cable. The fourth gland is reserved, for example, for the cable supplying heating power to heated sensors. VAISALA___________________________________________________________7 User's Guide ________________________________________________________ 0210-033 Figure 1 WAC151 Cross Arm The following numbers refer to Figure 1 above: 1 2 3 = Flange for mounting a Vaisala anemometer = Junction box = Flange for mounting a Vaisala wind vane 8 ______________________________________________________ M210349en-A Chapter 3 __________________________________________________ Installation CHAPTER 3 INSTALLATION This chapter provides you with information that is intended to help you install this product. Selecting Location Allow sufficient clearance for the wind sensors. Wind sensors should not be located next to a building or any other object that might affect the flow of air. 0204-040 Figure 2 Recommended Mast Location in Open Area VAISALA___________________________________________________________9 User's Guide ________________________________________________________ In general, any object of height (h) will not remarkably disturb wind measurement at a minimum distance of 10 × h. There should be at least 150 m open area in all directions from the mast. Refer to Figure 2 on page 9. 0204-041 Figure 3 Recommended Mast Length on Top of a Building The recommended minimum length (marked with the letter h in Figure 3 above) for the mast that is installed on top of a building is 1. 5 times the height of the building (H). When the diagonal (W) is less than the height (H), the minimum length of the mast is 1. 5 × W. Installation Procedure When installing the equipment for example in tropical, marine, or cold temperature environments it is important to note that the equipment is kept within its specific operating conditions. The cables must be terminated properly by tightening the cable glands to avoid dust, dirt or water to enter the equipment. 10 _____________________________________________________ M210349en-A Chapter 3 __________________________________________________ Installation For installation, follow the procedure below: 1. Remove the four screws holding the cover of the junction box. Lead the power and signal cables through the cable gland(s). [. . . ] - What was done when the failure was noticed?Include a detailed return address with your preferred shipping method on the Problem Report. Pack the faulty product using an ESD protection bag of good quality with proper cushioning material in a strong box of adequate size. Please include the Problem Report in the same box. [. . . ]