Fluke 725 ex [4/6] Ex safety information
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Fluke 725 ex [4/6] Ex safety information

Fluke 725 ex [4/6] Ex safety information
725Ex
Safety Information
2
WWarnings and Cautions
To prevent fire, explosion, or personal injury:
• Use the Calibrator only as described in the User
Manual and the Fluke 725Ex CCD (Concept Control
Drawing) or the protection provided by the Calibrator
may be impaired.
• Inspect the Calibrator before use. Do not use it if it
appears damaged.
• Check the test leads for continuity, damaged
insulation, or exposed metal. Replace damaged test
leads.
• When using probes, keep fingers behind the finger
guards on the probes
• Never apply more than 30.0 V between the input
terminals, or between any terminal and earth ground.
• Applying more than 30.0 V to the input terminals
invalidates the Calibrator’s Ex Approval and may
result in permanent damage to the Calibrator so it
can no longer be used.
• Use the proper terminals, mode, and range for the
measuring or sourcing application.
• To prevent damage to the device under test, be sure
the Calibrator is in the correct mode before
connecting the test leads.
• Never open the Calibrator case. Opening the case
invalidates the Calibrator’s Ex Approval.
• Make sure the battery door is closed and latched
before entering an Ex hazardous area or using the
Calibrator. See Ex Hazardous Areas in the Users
Manual.
• Remove the Calibrator from the Ex hazardous area
before opening the battery door. See Ex Hazardous
Areas in the Users Manual.
• When servicing the Calibrator, use only specified
replacement parts. Do not open the Calibrator case.
Opening the case invalidates the Calibrator’s Ex
Approval.
• Do not allow water inside the case.
• Do not operate the Calibrator around explosive dust.
• When using a pressure module, make sure the process
pressure line is shut off and depressurized before
connecting it or disconnecting it from the pressure
module.
• Use only 4 AA batteries listed in Table 2. Approved
Batteries, properly installed in the Calibrator case, to
power the Calibrator.
• Disconnect test leads from the circuit under test before
changing to another measure or source function.
• When measuring the pressure of toxic or flammable
gases, care must be taken to minimize the possibility of
leakage. Confirm that all pressure connections are
properly sealed.
• Do not use in a damp or wet environment.
WCaution
To avoid possible damage to Calibrator or to equipment
under test:
• Disconnect the power and discharge all high-voltage
capacitors before testing resistance or continuity.
• Use the proper jacks, function, and range for the
measurement or sourcing application.

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