Chapter 1 ________________________________________________________ General Information
VAISALA _______________________________________________________________________ 17
CAUTION
Caution warns you of a potential hazard. If you do not read and follow
instructions carefully at this point, the product could be damaged or
important data could be lost.
NOTE
Note highlights important information on using the product.
Product Related Safety Precautions
Vaisala Transmissometer LT31 delivered to you has been tested for
safety and approved as shipped from the factory. Failure to comply with
these precautions or with specific warnings elsewhere in this manual
violates safety standards of design, manufacture, and intended use of the
instrument or equipment. Vaisala Oyj and its subsidiaries assume no
liability for the consequences of customer's failure to comply with these
requirements. Note the following precautions:
WARNING
To minimize the electrical shock hazard, the Vaisala Transmissometer
LT31 chassis must be connected to a good electrical earth. The
instrument must be equipped with a three-conductor AC power cable.
Be sure that the earth wire of the cable is connected to an electrical
ground.
WARNING
There is also a grounding plug at the bottom of the interface enclosure
of the LT31 Transmissometer. Good grounding with a 16 mm
2
cable
must be provided. Besides improving safety, this protects the LT31
Transmissometer against lightning induced voltages.
WARNING
To prevent operator injury or damage to the LT31 Transmissometer,
verify that the LINE VOLTAGE SETTING is correct BEFORE
connecting the line power. Also ensure that the line power outlet is
provided with a protective ground contact.
WARNING
Do not operate the equipment in the presence of flammable gases or
fumes. Operation of any electrical instrument in such an environment
constitutes a definite safety hazard.