Chapter 2
Installing the Hardware and Software
2-2
ni.com
Do
not
substitute parts or modify the FieldPoint product. Use the product
only with the modules, accessories, and cables specified in the installation
instructions.
Always operate the FieldPoint product in a suitable enclosure that will
prevent unintentional access to live terminals and will prevent the spread
of fire.
Do
not
operate FieldPoint products in an explosive atmosphere or where
there may be flammable gases or fumes. If you need to operate FieldPoint
products in such an environment, the FieldPoint products
must
be in a
suitably rated enclosure. Operate the product only at or below Pollution
Degree 2. Pollution is foreign matter in a solid, liquid, or gaseous state that
can reduce dielectric strength or surface resistivity. The following is a
description of pollution degrees:
•
Pollution Degree 1 means no pollution or only dry, nonconductive
pollution occurs. The pollution has no influence.
•
Pollution Degree 2 means that only nonconductive pollution occurs in
most cases. Occasionally, however, a temporary conductivity caused
by condensation must be expected.
•
Pollution Degree 3 means that conductive pollution occurs, or dry,
nonconductive pollution occurs which becomes conductive due to
condensation.
If you need to clean a FieldPoint product, use a soft nonmetallic brush.
The product
must
be completely dry and free from contaminants before you
return it to service.
You
must
insulate signal connections for the maximum voltage for which
the FieldPoint product is rated. Do
not
exceed the maximum ratings for the
product. Do
not
install wiring while the product is live with electrical
signals. Do
not
remove or add terminal bases when power is connected to
the FieldPoint system. Avoid contact between your body and the terminal
base signal wiring when hot-swapping modules.
Operate FieldPoint products at or below Installation Category II.
The following is a description of installation categories:
•
Installation Category I is for measurements performed on circuits not
directly connected to MAINS
1
. This category is a signal level such as
1
MAINS is defined as the electricity supply system to which the equipment concerned is designed to be connected for either
powering the equipment or for measurement purposes.