User`s guide

Chapter 2 __________________________________________________________ Product Overview
VAISALA _______________________________________________________________________ 19
Ordering Options for WMT700 Series
When ordering the product, select either WMT701, WMT702, or
WMT703 according to your specific measurement needs and operating
conditions. Table 5 below lists the main characteristics of WMT701,
WMT702, and WMT703.
Table 5 Characteristics of WMT700 Series Wind Sensors
Property WMT701 WMT702 WMT703
Measurement
Range
up to 40 meters
per second
up to 65 meters per
second
up to 75 meters per
second
Temperature
Range Option
-10 ... +60 °C
-40 ... +60 °C
-55 ... +70 °C
Heating
Options
No heating
Transducer heating: 30 W (minimum 40 W needed)
Transducer and array arm heating: 150 W (minimum 200 W
needed)
NOTE
Vaisala recommends using heated versions of WMT700 in
environmental conditions where snow and ice build-up is possible. For
more information on the heating functionality, see section Heating on
page 57.
Table 6 below lists the wind sensor settings that can be selected by the
user.
Table 6 Available Settings for WMT700
Setting Options
Digital communication interface RS-485, RS-422, RS-232, SDI-12
Digital communication profile WMT700, WS425 - ASCII, WS425 -
NMEA Extended, WS425 - SDI-12,
WS425 - ASOS, ROSA - MES12
Digital communication units m/s, knots, mph, km/h
Analog output signals for wind speed
channel
voltage, current, frequency, WS425 -
voltage, WS425 - frequency
Analog output signals for wind
direction channel
voltage, current, potentiometer
(WS425)
NOTE
If required, you can change the communication interface, digital message
format, and analog output signals for WMT700 after the installation. To
change the product version characteristics listed in Table 5 above, contact
Vaisala Service Center.