Battery And Fuse Replacement - Velleman DVM830 User Manual

4.4. DC Current
Range
200µ A
2mA
20mA
200mA
10A
Overload protection: F 0.2A fuse (10A not fused)
May only be used for measurements on low-voltage networks (max. 240V)
4.5. Resistance
Range
200Ω
2kΩ
20kΩ
200kΩ
2MΩ
Maximum open circuit voltage: 2.8V
Overload protection: 220VDC / AC RMS on all ranges
4.6. Diode
Resolution
1mV
Over-current protection: 220V DC/AC
4.7. Transistor hFE
Range
NPN
PNP
5. Accessories
Test leads, battery (9V), this operating manual.

6. Battery and Fuse Replacement

Remove screws on the back cover and open the case. Replace the exhausted battery with a new
one.
Fuse rarely needs replacement and blows usually as a result of the operator's error. Open the
case as mentioned above and replace the blown fuse with ratings specified:
F: F 0.2A/250V
DVM830
Resolution
0.1µ A
1µ A
10µ A
100µ A
10mA
Resolution
0.1Ω
1Ω
10Ω
100Ω
1kΩ
Max. test current
1.4mA
Test Range
0 to 1000
Accuracy
± 1% of rdg ± 2 digits
± 1.2% of rdg ± 2 digits
± 2% of rdg ± 3 digits
± 0.8% of rdg ± 1 digit
± 1% of rdg ± 2 digits
Max. open circuit voltage
Test current
10µ A
7
Accuracy
2.8V
Test voltage
Vce = 3V
VELLEMAN