Conrad VC-608 Bedienungsanleitung Seite 17

After changing the fuses, close the casing and screw it carefully together in rever-
se order. Switch the device on again after the housing has been closed and scr-
ewed in securely.
• Be particularly careful when dealing with alternating voltages greater than 25 V -
(AC) or direct voltages greater than 35 V (DC). Even at these voltages, you can
receive an extremely dangerous electric shock by touching electrical leads. There-
fore, switch off the voltage source to start with, connect the measuring device with
the connections of the voltage source to be measured, tune the measuring device
to the requisite voltage-measuring range and subsequently switch on the voltage
source. After completing the measurement, switch off the voltage source and
remove the sensing leads from the connections to the voltage source.
• Before every measurement of voltage, ensure that the measuring device is located
in the voltage-measuring range.
• The sensors must be removed from the object which has been measured, before
every change of measuring range.
• Before taking any measurement, check your measuring device or your sensing
leads for damage.
• Only use sensing leads for taking measurements, which have been supplied with
the measuring device. Only these leads are permissible.
• In order to avoid an electric shock, take care that the sensors and the connections
to be measured (measuring points) are not touched while measuring, even indirec-
tly.
• The voltage running between the measuring device and earth must never exceed
1,000 V (DC) or 750 V (DC) rms.
• Do not work with the measuring device in rooms where combustible gases, steam
or dust are present or could be present; nor in adverse environmental conditions.
For your own safety, strictly avoid the measuring device or measuring cables
becoming damp or wet. During operation, avoid being close to:-
a) strong magnetic fields (loudspeakers, magnets)
b) electromagnetic fields (transformers, motors, coils, relays, fuses, electromagnets,
etc.)
c) electrostatic fields (charging / discharging)
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±(1,00%+20dgts)
Bürdenspannung =Spannungsabfall am Shunt (Widerstandswert) ermittelt sich aus
Meßstrom x (Shuntwiderstand + Sicherungswiderstand) Crestfaktor max. 3 Zusätzl.
Meßfehler bei untersch. Kurvenformen siehe Wechselspannung ACV und ACmV
Mischstrom ACA + DCA (TRUE RMS)
5000 uA ±(1,50%+50dgts)
500 mA ±(1,50%+50dgts)
10 A ±(1,50%+50dgts)
Genauigkeit bis 60% des Meßbereiches; über 60% bis 100% beträgt der Meßfeh-
ler für alle Bereiche:
±(2,00%+50dgts)
Bürdenspannung =Spannungsabfall am Shunt (Widerstandswert) ermittelt sich aus
Meßstrom x (Shuntwiderstand + Sicherungswiderstand)
Crestfaktor max. 3
Zusätzl. Meßfehler bei untersch. Kurvenformen siehe Wechselspannung ACV und
ACmV
nS - Messung (Leitwert = Kehrwert des Widerstandes gemessen in "Siemens")
500 nS ±(3,00%+5dgts)
Spannung am offenen Meßkreis 2,5 V
Kurzschlußstrom max. 25 nA
Zenerdioden-Messung
Spannung
15 V ±(5,0%+10dgts)
Spannung am offenen Meßkreis ca. 15 bis 22 V
Teststrom erzeugt mit Hilfe einer Konstantstromquelle mit einer Tol. von ±5%
Widerstand mit 2,5 V Meßspannung
50 Ohm ±(1,00% + 20 dgts)
5 kOhm ±(0,2% + 5 dgts)
50 kOhm ±(0,2% + 5 dgts)
500 kOhm ±(0,2% + 5 dgts)
5 MOhm ±(0,2% + 5 dgts)
50 MOhm ±(1,0% + 10 dgts)
Low-Voltage-Ohm-Messung mit 0,25 V Meßspannung
5 kOhm ±(0,2%+ 5 dgts)
50 kOhm ±(0,2%+ 5 dgts)
500 kOhm ±(0,2%+ 5 dgts)
5 MOhm ±(0,2%+ 5 dgts)
50 MOhm ±(1,0%+ 10 dgts)
0,1 uA DC bis 1 kHz
10 uA DC bis 1 kHz
1 mA DC bis 1 kHz
0,1 nS
Teststrom
1 mV 1 mA
Kurzschlußstrom max.
0,01 Ohm 1,7 mA
0,1 Ohm 1,7 mA
1 Ohm 240 uA
10 Ohm 25 uA
0,1 kOhm 2,5 uA
1 kOhm 250 nA (=0,25 uA)
1 Ohm 170 uA
10 Ohm 24 uA
0,1 kOhm 2,5 uA
1 kOhm 250 nA
10 kOhm 25nA
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