Hameg Instruments HM8115-2 Manual Del Usuario página 33

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Warning signal in case of overrange
Overrange will be indicated by blinking horizontal bars in the
respective display(s) and an acoustical signal.
Warning signal setting
Switch off HM 8115-2 with switch
Switch HM8115-2 back on and push the righthand pushbutton
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of the FUNCTION pushbutton set.
Keep this button depressed until the LED "WATT" will light
up. This function will remain stored unless changed.
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VOLT
Pushbuttons and a LED are provided for the manual or
automatic selection of the voltage ranges. After turn-on the
AUTO LED will light up, the instrument will automatically select
the appropriate range. The selected range will be indicated by
the associated LED. If the voltage changes the range will
automatically follow.
If any of the manual select pushbuttons is depressed the
autorange mode will be left, the AUTO LED will extinguish.
Then any of the ranges can be manually selected. Pressing
the AUTO button will return the instrument to the autoran-
ging function, the AUTO LED will light.
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The VOLT display will show the voltage at the terminals. If
an inappropriate range was selected manually this will be
shown by blinking horizontal bars in the display(s) and an
acoustical warning.
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AMPERE
Pushbuttons and LEDs are provided for the manual or
automatic range selection.
After turn-on of the HM8115-2 the AUTO LED will light up, the
instrument will automatically select the optimum range. The
range selected will be indicated by the associated LED.
If the current changes the range will automatically follow. If
any of the manual select pushbuttons is depressed the AUTO
function will be left, the AUTO LED will extinguish. Then the
desired range can be selected manually. Pressing the AUTO
button will return the instrument to the autoranging function.
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O p e r a t i n g c o n t r o l s a n d d i s p l a y s
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The AMPERE display
terminals. If an inappropriate range was selected manually
blinking horizontal bars will be displayed, and an acoustical
warning signal will sound off.
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FUNCTION
The following functions can
be selected by
FUNCTION pushbuttons and
shown on the associated
display:
Active power (Watt)
Reactive power (CAr)
Apparent power (VA)
Power factor PF
WATT (Active power)
After turn-on the instrument
will automatically select the
active power mode, the LED
will light up, the display
will show the active power.
By using the FUNCTION
pushbuttons other functions
may be chosen.
Var (Reactive power)
In this mode the reactive power will be measured, the LED
will light up, the display
The reactive power will be displayed as a positive value
irrespective of any capacitive or inductive loads.
The reactive power display will also show correct
values if voltage or current are non-sinusoidal. The
apparent power (U
(arithmetic mean of u(t) x i(t) ) are independent of the
waveform, the reactive power is calculated from both.
HINT
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will show the current through the
the
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will show the reactive power.
x I ) and the active power
rms rms
Subject to change without notice
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