Vaisala WXT520 User's Guide download pdf (Page 46)

User’s Guide ______________________________________________________________________

44 __________________________________________________________________ M210906EN-C

proportion to the sampling rate, since wind measurement is the most

consuming operation in the system.

In most occasions the average consumption is less than 10 mA.

Typically, the higher the voltage the lower the current (see Figure 20 on

page 44).

0805-023

Figure 20 Average Operational Current Consumption (with

4Hz Wind Sensor Sampling)

Heating voltage Vh+ (one of the following three alternatives):

- 5 ... 32 VDC;

- AC, max V

peak-to-peak

84 V; or

- Full-wave rectified AC, max V

peak

42 V.

Typical DC voltage ranges are as follows:

- 12 VDC ± 20 % (max 1.1 A);

- 24 VDC ± 20 % (max 0.6 A).

Maximum heating power is achieved at voltages 15.5 V and 32 V.

Nominally at 15.7 V heating voltage level WXT520 automatically

changes the heating element combination in order to consume equal

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Vaisala WXT520 User's Guide Page 46