Vaisala WINDCAP WS425 User's Guide download pdf (Page 34)

USER'S GUIDE____________________________________________________________________

32 __________________________________________________________________ M211095EN-C

Measurement Methods

WMT700 measures wind speed and direction either continuously or for

the duration of the user-configurable averaging time. You can select the

measurement mode over the serial interface.

Continuous Measurement

You can set WMT700 to measure wind data continuously until the sensor

receives the STOP command.

The following data communication methods are available:

- Poll Mode: You can fetch the most recent data from WMT700 with

the polling command. You must specify the data message

identification number in the command.

- Automatic Messaging Mode: If the automatic message interval has

been configured, WMT700 sends automatic data messages at selected

intervals. The data message is user-configurable.

For information on response delay and timing, see section Serial

Interface Timing on page 64.

Wind Measurement on Request

You can set WMT700 to measure wind speed and direction for a

specified period of time. The duration of the measurement can range

from 0.25 seconds to 60 minutes, depending on the configured averaging

interval.

You can fetch the required data message from WMT700 in measurement

mode with the polling command. You must specify the data message in

the command.

For information on response delay and timing, see section Serial

Interface Timing on page 64.

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Vaisala WINDCAP WS425 User's Guide Page 34