Westfalia 82 04 51, Инструкция по эксплуатации

Страница: 56 / 71

51
Operation
Notes:
ƒ When the test leads are connected to the unit in idle state (i.e.
without being connected to a device to be measured), a
fluctuating value may be displayed on the display due to the
high sensitivity of the device. When a measurement is per-
formed how-ever, the displayed value corresponds exactly to
the specified accuracy of the unit.
ƒ If “
OL
” is shown on the display at the manual range mode, the
selected measuring range has been exceeded by the meas-
urement value. Select a higher range.
ƒ In manual measuring range mode select the highest range
when the value to be measured is unknown.
ƒ
Do not exceed the maximum input voltage of 600 V rms AC.
ƒ If the measured voltage is higher than 610 V rms AC, the
symbol “
OL
” appears on the display and the built-in buzzer
sounds.
AC Voltage Measurements - Accuracy
Range Resolution Accuracy
660 mV 0.1 mV ± (1.5% of r 10 digits)
6.6 V 0.001 V
66 V 0.01 V
± (1.2% of r 5 digits)
600 V 0.1 V ± (1.5% of r 10 digits)
Input impedance: 10 M Ω
Overload protection: 660 mV range: 250 V or 250 V rms AC
66–600 V range: 600 V or 600 V rms AC
Max. input voltage: 600 V rms AC
Frequency range: 40 – 400 Hz