User Manual
iii
• In air temperatures exceeding the specied operating temperatures.
• In atmospheric pressures outside the specied altitude limits or where the surrounding gas is not air.
• In environments with restricted cooling air ow, even if the air temperatures are within specications.
• In direct sunlight.
This instrument is intended to be used in an indoor pollution degree 2 environment. The operating temperature
range is 0
◦
C to 40
◦
C and 20% to 80% relative humidity, with no condensation allowed. Measurements made by
this instrument may be outside specications if the instrument is used in non-oce-type environments. Such
environments may include rapid temperature or humidity changes, sunlight, vibration and/or mechanical shocks,
acoustic noise, electrical noise, strong electric elds, or strong magnetic elds.
Do not operate instrument if damaged
If the instrument is damaged, appears to be damaged, or if any liquid, chemical, or other material gets on or
inside the instrument, remove the instrument’s power cord, remove the instrument from service, label it as not
to be operated, and return the instrument to B&K Precision for repair. Notify B&K Precision of the nature of
any contamination of the instrument.
Clean the instrument only as instructed
Do not clean the instrument, its switches, or its terminals with contact cleaners, abrasives, lubricants, solvents,
acids/bases, or other such chemicals. Clean the instrument only with a clean dry lint-free cloth or as instructed
in this manual. Not for critical applications
This instrument is not authorized for use in contact with the human body or for use as a component in a
life-support device or system.
Do not touch live circuits
Instrument covers must not be removed by operating personnel. Component replacement and internal
adjustments must be made by qualied service-trained maintenance personnel who are aware of the hazards
involved when the instrument’s covers and shields are removed. Under certain conditions, even with the power
cord removed, dangerous voltages may exist when the covers are removed. To avoid injuries, always disconnect
the power cord from the instrument, disconnect all other connections (for example, test leads, computer
interface cables, etc.), discharge all circuits, and verify there are no hazardous voltages present on any
conductors by measurements with a properly-operating voltage-sensing device before touching any internal parts.
Verify the voltage-sensing device is working properly before and after making the measurements by testing with