Battery Saver; Measurement Functions; Ac And Dc Voltage Measurement; Resistance Measurement - Forch F73 Bedienungsanleitung

3.1.2 Battery Saver

Turn on the meter. And then The Meter will be turned off automatic after approx. 15 min-
utes. the buzzer will sound five times before the Meter turn off .
3.1.3 Non Contact AC Voltage detection
NCV
Set rotary switch to the
that the Meter's top is vertically and horizontally centered and contacting the conductor
,when the live voltage > 110V(RMS),the sensing indicator will be on and the buzzer will
keep sounding as warning.
Note:
Even without LED indication, the voltage may still exist. Do not rely on non-contact
voltage detector to determine the presence of voltage wire,Detection operation may be
subject to socket design, insulation thickness and different type and other factors
When the meter input terminals presence voltage, due to the influence of presenced
voltage, voltage sensing indicator may also be bright
Keep the meter away from electrical noise sources during the tests, i.e., florescent lights,
dimmable lights, motors, etc.. These sources can trigger NON-Contact AC Voltage
Detection Function and invalidate the test.

3.2 Measurement Functions

3.2.1 AC and DC Voltage measurement

To avoid electrical shock and/or damage to the instrument, do not attempt to take
any voltage measurement that might exceeds 1000Vdc or 750Vac rms.
To avoid electrical shock and/or damage to the instrument, do not apply more than
1000Vdc or 750Vac rms between the common terminal and the earth ground.
Voltage is the difference in electrical potential between two points.
The polarity of ac (alternating current) voltage varies over time; the polarity of dc (direct
current) voltage is constant.
The Meter's DC voltage ranges are 400.0mV, 4.000 V, 40.00 V, 400.0 V and 1.000 V (AC)
voltage ranges are 400.0 mV (only in range mode), 4.000 V, 40.00 V, 400.0 V and 750 V.
To measure ac or dc voltage:
1. Set rotary switch to the
2. Connect the black test leader and red test leader to the COM and V terminals
respectively.
3. Connect the test leader to the circuit being measured
4. Read the displayed value. The polarity of red test lead connection will be indicated
when making a DCV measurement.
NOTE:
Unstable display may occur especially at DC400mV and AC400mV ranges, even though
you do not put test leads into input terminals, in this case, if an erroneous reading is
suspected, short the V terminal and the COM terminal, and make sure the zero display.

3.2.2 Resistance measurement

To avoid electrical shock and/or damage to the instrument, disconnect circuit power
and discharge all high-voltage capacitors before measuring resistance.
Resistance is an opposition to current flow.
The Meter's resistance ranges are 400.0 Ω, 4.000 kΩ, 40.00 kΩ, 400.0 kΩ, 4.000 MΩ and
40.00 MΩ.
position and hold the Meter so
position.