Hioki Analog MO HiTESTER IR4011, Instruction Manual, Page: 70 / 104

Operating Precautions
10
*IP40:
This indicates the degree of protection provided by
the enclosure of the device against use in hazard-
ous locations, entry of solid foreign objects, and
the ingress of water.
4: Protected against access to hazardous parts
with wire measuring 1.0 mm in diameter. The
equipment inside the enclosure is protected
against entry by solid foreign objects larger than
1.0 mm in diameter.
0: The equipment inside the enclosure is not pro-
tected against the harmful effects of water.
• This instrument is designed for use indoors. It can be oper-
ated at temperatures between 0 and 50°C without degrading
safety.
• For safety reasons, when taking measurements, only use the
L9787, L9788-11 or optional test lead provided with the instru-
ment.
• To avoid breaking the test lead, do not bend or pull them.
• To avoid damage to the instrument, protect it from physical
shock when transporting and handling. Be especially careful
to avoid physical shock from dropping.
• If the protective functions of the instrument are damaged, either
remove it from service or mark it clearly so that others do not
use it inadvertently.
• Although this instrument is dust resistant, it is not completely
dust- or waterproof. To prevent possible damage, avoid using
in dusty or wet environments.
• The protection rating for the enclosure of this device (based
on EN60529) is *IP40.