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being tested when a fault condition in the circuit exists. Capacitors
inside the instrument may retain a charge even if the instrument is
disconnected from its source of supply.
Grounded Instruments
Use only grounded instruments. Do not connect the probe’s ground
lead to a potential other than earth ground. Always make sure the
probe and the instrument are grounded properly.
Use Only in Office-Type Indoor Setting
The probe is designed to be used in office-type indoor environments.
Do not operate the probe:
z
In the presence of noxious, corrosive, or flammable fumes,
gases, vapors, chemicals, or finely-divided particulates.
z
In environments where there is a danger of any liquid being
spilled on the probe.
z
In air temperatures exceeding the specified operating
temperatures.
z
In atmospheric pressures outside the specified altitude limits or
where the surrounding gas is not air.
Not for Critical Applications
This probe 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 Substitute Parts
Do not install substitute parts or perform any unauthorized modification
to the instrument.
Only Qualified Personnel
This probe should only be used by personnel who are trained,
experienced, or otherwise qualified to recognize hazardous situations
and who understand the safety precautions necessary to avoid
possible injury when using such a probe.
Observe Maximum Working Voltage
Do not use the CT4121 above 40 V (DC + AC peak) CAT I between
each input lead and earth.
