YOKOGAWA CL255, Руководство пользователя

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10
IM CL255
2.9 Peak Measurement
● In this mode, " " is indicated on the display.
● In the PEAK mode, the display shows current or voltage's crest in
effective value. (For example, when the current or voltage is si-nusoidal,
the reading equals the crest value divided by the square root of two.)
The display reading is constantly updated with a maximum crest.
● Response time is 300ms in DC measurement and 10ms in AC
measurement.
WARNING
● Never use the instrument on a circuit above 750VAC or 1000VDC.
This may cause electrical shock hazard and damage to the instrument
or the circuit under test.
● Do not make measurement with the test leads plugged into the instru-
ment.
(1) The PEAK mode is available on DCA, ACA, DCV and DCA ranges.
Set the Function Selector switch to the " A ", " A ", " V " or
" V " position.
Note: Only on DCA range, press the button for about one second
to zero adjust the reading with the transformer jaws closed.
(2) Press the button twice to enter from the normal mode to
the PEAK mode. " " should be shown on the display.
(3) Follow instructions for DCA, ACA, DCV or ACV measurement.
(4) For accurate reading, press the button to reset the reading after
clamping onto the conductor or making test lead connections to the cir-
cuit under test. Then proceed to measurement.
NOTE
● In the PEAK mode, the auto-ranging feature is disabled and measuring
ranges are fixed as follows.
DCA and ACA : 0 to 400.0A
DCA and ACV : 0 to 400.0V
● The Sleep function is disabled in the PEAK mode as well.