Chapter 1 ________________________________________________________ General Information 
 
VAISALA ________________________________________________________________________ 9 
Safety 
The DPT146 delivered to you has been tested for safety and approved as 
shipped from the factory. Note the following precautions: 
WARNING 
Ground the product and verify outdoor installation grounding 
periodically to minimize shock hazard. 
 
CAUTION 
Do not modify the unit. Improper modification can damage the product 
or lead to malfunction. 
 
CAUTION 
Do not drop or hit the transmitter. The sensor is fragile and may break 
from a sudden shock. 
When transporting the transmitter, use the original shipping box from 
Vaisala. 
 
ESD Protection 
Electrostatic Discharge (ESD) can cause immediate or latent damage to 
electronic circuits. Vaisala products are adequately protected against 
ESD for their intended use. It is possible to damage the product, 
however, by delivering electrostatic discharges when touching, 
removing, or inserting any objects inside the equipment housing. 
To make sure you are not delivering high static voltages yourself: 
-  Handle ESD sensitive components on a properly grounded and 
protected ESD workbench. 
-  When an ESD workbench is not available, ground yourself to the 
equipment chassis with a wrist strap and a resistive connection cord. 
-  If you are unable to take either of the above precautions, touch a 
conductive part of the equipment chassis with your other hand before 
touching ESD sensitive components. 
-  Always hold component boards by the edges and avoid touching the 
component contacts.