Model 787
Calibration Manual
4
International Symbols
International symbols used on the ProcessMeter and in this calibration manual are
explained in Table 1.
Table 1. International Symbols
Symbol Meaning Symbol Meaning
Alternating current Earth ground
Direct current Fuse
Alternating or direct current Conforms to European Union
directives
Refer to the manual.
Important information.
Conforms to relevant Canadian
Standards Association
directives
Battery Double insulated
Meet Underwriter’s Laboratories
safety requirements
Inspected and licensed by TÜV
Product Services
CAT III
Overvoltage (Installation) Category III, Pollution Degree 2 per IEC1010-1 refers to the
level of Impulse Withstand Voltage protection provided. Typical locations include: Mains,
wall outlets, main distribution levels connected closer to the supply system but less than
the primary supply system (CAT IV)
Required Equipment
Equipment and software required to perform the procedures in this manual are identified
in Table 2.
If the recommended equipment model is not available, in some cases other equipment
can be substituted as long as it meets the specifications indicated.
WWarning
To avoid safety hazards and equipment damage during the calibration
procedure, use the specified calibration equipment listed in Table 2.
Using unspecified equipment can jeopardize the verification test and
pose safety hazards.
Note
Unless otherwise indicated, all connection diagrams for the verification
tests in this manual showing a calibrator or digital multimeter use a Fluke
5500A calibrator or HP 3458A.
If you are using a different calibrator or DMM make the connections
appropriate for your instrument.