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Vaisala WAT12, User Manual

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Figure 9 Typical system with 24 V DC power supply and 5 mA signal currents

The following figure shows wiring for high-noise environment. Make sure that you also ground
the cable at the power supply.

Figure 10 Wiring for high-noise environment

The following figure shows wiring for long distance with the 5 mA loop current. Pay attention

to the maximum resistance values for both the power and signal leads.

Figure 11 Long distance wiring

Chapter 3 – Installation

17

Summary of Contents for WAT12

Page 1: ...M210309EN B User Guide Analog Wind Transmitter WAT12...

Page 2: ...al English versions In ambiguous cases the English versions are applicable not the translations The contents of this document are subject to change without prior notice Local rules and regulations may...

Page 3: ...or wiring 16 3 4 2 Signal output 16 3 4 3 Powering 18 3 4 4 Optional heating power 19 3 4 5 Wiring examples 19 3 5 Mounting thermostat switch 23 3 6 Mounting WAT12 on top of pole mast 23 3 7 Mounting...

Page 4: ...signal currents 17 Figure 10 Wiring for high noise environment 17 Figure 11 Long distance wiring 17 Figure 12 Long distance wiring with 4 wires 18 Figure 13 Default heating power connection with both...

Page 5: ...line resistance with 24 V DC power supply 18 Table 6 Jumper selectable reference sources for testing 27 Table 7 Output values for jumpers in test mode 27 Table 8 Spare parts 28 Table 9 Common problem...

Page 6: ...WAT12 User Guide M210309EN B 4...

Page 7: ...ated manuals Document code Name M210294EN Vaisala Wind Vane WAV151 User Guide M210293EN Vaisala Anemometer WAA151 User Guide 1 3 Documentation conventions Warning alerts you to a serious hazard If you...

Page 8: ...Tip gives information for using the product more efficiently Lists tools needed to perform the task Indicates that you need to take some notes during the task WAT12 User Guide M210309EN B 6...

Page 9: ...accepts a wide range of input power 12 28 VDC 1 Flange for mounting Vaisala anemometer 2 Junction box containing the circuit box 3 Flange for mounting Vaisala wind vane WAT12 consists of a printed cir...

Page 10: ...ids your warranty CAUTION 2 2 1 ESD protection Electrostatic Discharge ESD can damage electronic circuits Vaisala products are adequately protected against ESD for their intended use However it is pos...

Page 11: ...the flow of air Installations on top of high buildings or masts and in sites on open grounds are vulnerable to lightning strikes A nearby lightning strike may induce a high voltage surge not tolerabl...

Page 12: ...does not remarkably disturb wind measurement at a minimum distance of 10 h There must be at least 150 m 500 ft open area in all directions from the mast Minimum distance between the mast and obstacles...

Page 13: ...elect the current output span and direction and speed scaling For examples on selecting scales and ranges see the figures in Jumper settings page 12 3 Enter the power and signal cables through the cab...

Page 14: ...A 4 20 mA 0 10 mA 2 10 mA 0 5 mA and 1 5 mA are available as user configurable options each with factory adjusted zero and span levels The voltage mode signals are easily obtained by connecting a suit...

Page 15: ...rage direction during northerly winds These settings are carried out by the jumpers as shown in the following table Table 3 Jumper setting for 1 5 mA current loop Jumper Description X4 J5 ON Normal op...

Page 16: ...gure 6 Jumpers for setting 0 10 mA 0 540 0 51 2 m s 3 4 Connections WAT12 provides the line cable entry through a gland for a cable with a diameter 7 10 mm For better protection against RF interferenc...

Page 17: ...Connector Description X1 Plug in connector with screw terminals 5 pcs for the anemometer cable Maximum wire cross section area is 1 5 mm2 X2 Plug in connector with screw terminals 8 pcs for the power...

Page 18: ...voltage 10 5 V typically and an o p resistance of 57 W The loops return to the common ground for power and signal The signal and sensor power outputs are also current limited Typically only a 4 wire...

Page 19: ...nment Make sure that you also ground the cable at the power supply Figure 10 Wiring for high noise environment The following figure shows wiring for long distance with the 5 mA loop current Pay attent...

Page 20: ...ables to remotely supply the operating power from a distance of several kilometers even through private or leased telephone lines The maximum power line resistance depends on the supply voltage and th...

Page 21: ...of the heating power in temperatures below 4 C 39 2 F The optional heating power requirement is 20 V AC or V DC and 500 mA for both WAV151 and WAA151 The sensors can be connected in series when a 40 V...

Page 22: ...1 3 4 SHIELD F VIO G2 WHT YEL E D G4 G3 ORN PNK G H G0 G1 WAV151 Wind Transmitter GL G2 G0 G4 G3 7 6 G1 8 9 10 11 X3 WAT12 Wind speed current scale is jumper selectable in WAT12 Power supply Wind dir...

Page 23: ...Figure 15 Wiring with WHP151 mains power supply Chapter 3 Installation 21...

Page 24: ...Figure 16 Wiring with WHP25 mains power supply and WA25 sensors WAT12 User Guide M210309EN B 22...

Page 25: ...h 2 Regulator 3 Wires Make sure that the thermostat switch does not touch the regulator CAUTION Figure 18 Standard connection for thermostat switch 3 6 Mounting WAT12 on top of pole mast The following...

Page 26: ...fferent units sensors transmitters power supplies and displays can cause a lethal surge voltage if a lightning strikes in the vicinity Always ground the mast equipment case close to the mast with a sh...

Page 27: ...AV151 to WAT12 1 WAA151 cup assembly 2 WAV151 tail assembly 3 Cross arm 4 WAT12 5 Connector 6 Mounting flange 7 South 8 North 3 8 Alignment After mounting WAT12 to the mast make sure that the WAV151 e...

Page 28: ...to the data collection system and the system is powered up make sure that the wind readings react correctly To test the anemometer rotate the cups manually To test the wind vane hold the vane in a few...

Page 29: ...rces for testing Variable Reference signal alternatives Direction 000 008 357 Speed 0 0 m s 0 8 m s 51 2 m s 1 To remove WAT12 cover remove the 4 screws holding the cover 2 To enable the test stage re...

Page 30: ...omponent board pay attention to ESD protection When you replace the thermostat switch see Mounting thermostat switch page 23 Table 8 Spare parts Spare part Order code Component Board for WAT12 16637WA...

Page 31: ...ls Shaft heating of the sensors is not working Improper or loose connections Check wiring and tighten the screw terminals Heating is not connected Check the connections The thermostat switch is failin...

Page 32: ...nal input from sensors Wind direction 6 bit parallel GRAY code optionally 7 bits Wind speed Pulse frequency 0 750 Hz Output signals 2 analog current loops 1 for direction 1 for speed Highside drivers...

Page 33: ...ic electromagnetic environment Mounting To 60 mm 2 36 in pole mast Weight 1 5 kg 3 31 lb Dimensions PC board 114 69 mm 4 49 2 72 mm Junction box H W D 80 125 57 mm 3 15 4 92 2 24 in Cross arm length 8...

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Page 35: ...of the warranty for each product Technical support Contact Vaisala technical support at helpdesk vaisala com Provide at least the following supporting information as applicable Product name model and...

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Page 38: ...www vaisala com...

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