User`s guide
Chapter 4 ________________________________________________________________  Installation 
Powering in Retrofit Installations 
WMT700 is designed to operate with the same supply voltages as 
WS425 and no connection changes are necessary. The power 
consumption depends on the selected heating options. WMT700 
with heated transducers can be used to replace similar WS425 
models. When upgrading from WS425 to WMT700 with heated 
transducers and arms, more capacity is required from the power 
supply unit. 
For information on power supply requirements of each WMT700 
product type, see Table 27 on page 87. 
NOTE 
When WMT700 is in operation, the power consumption is
 higher than 
with WS425. This can affect system performance in power
-critical 
applications such as solar
-powered or battery-powered systems. 
Use solar
-power or battery backup only to secure operating voltage. 
Ensure that the solar
-powered system has a sufficient power reserve 
available.
VAISALA _______________________________________________________________________ 105 










