- Digital and analogue display, backlit
- Intelligent filter - precise and measurement-dependent activation for the measurement of very high resistances - beating, i. e. compensation of 16 2/3 Hz and 50 Hz interference - attenuation of capacitive influences from power cables, etc. - suppression of electric field influences
- Signalling of dangerous contact voltage by means of LED
- Indication of limit value violations by means of LED
- Overvoltage protection - protects the instrument in the event of inadvertent connection to mains power
- Fuse link for all resistance measuring ranges
- New: Electronic fuse for protection of the low-resistance measurement RLO also protects the fuse link in the low-resistance measuring range in the event of faulty operation
- One measuring point self-test with test resistance of 10 MO per EN 50110 / VDE 0105-100
- Guard terminal for compensating surface current
METRISO BASE
Article number M550O
Measurements
Measuring ranges Riso 10 k ... 100 GΩ
Riso U = 50, 100, 250, 500
R 10 O... 10 kΩ
RLO 0,01 ... 10 Ω
U 0 ... 500
Display functions
Backlit display
Limit value LED Limit (green/red)
Additional acoustic signal Riso, limit value per VDE 0100 RLO
LED for dangerous contact voltage (when switched off)
LCD symbol for external voltage
Battery level display
Special functions
Discharge capacitive devices under test
Safety shutdown (UBatt < 8 V)
Features
Measuring category CAT III 600V, CAT IV 300V
Integrated 10 MΩ test resistor