GMC Instruments METRAOHM 413 (M630A) Low-Resistance Ohmmeter

Characteristic Values
Measuring ranges 0.01  Ω ...1999 kΩ
Accuracy ±(1.5% rdg. + 4 digits) at 20 °C
Measuring current < 10 Ω 200 mA constant
                               > 10 Ω 1 μA ... 20 mA
Open-circuit voltage > 4 V

Display
Digital display LCD, 10 mm high, 3½ places,
with background illumination
Overflow indication by 0L
Battery status indicated by 2 segments on the LCD
External voltage
display for voltages as from approx. 15 V:
Alternately, red LED VOLT blinks and
symbol – U – appears on the LCD.
Numerical display of voltage level, in the
case of AC voltage, symbol ~ for AC is
additionally shown.
Between 15 V and 400 V an intermittent
acoustic signal sounds as a warning signal

Ambient Conditions
Reference temp. 20 °C
Storage temperature –10 °C ... +70 °C
Operating temp. –10 °C ... +50 °C

Power Supply
Battery 9 volt block battery per IEC 6 LR 61 AlMn,
automatic shutdown after 20 seconds of
inactivity

Battery Saving Circuit
The measuring instrument is switched off automatically if none of
the keys are activated for a period of approximately 20 seconds.

Electrical Safety
Safety class II per IEC 61010-1
Test voltage 3.2 kV
Measuring category CAT II 600 V, CAT III 300 V
Overvoltage
protection reversible by means of semiconductor at
nominal voltages of up to 400 V,
from 400 to 500 V with special fuse
(can only be replaced at the factory)

Electromagnetic Compatibility (EMC)
Interference emission EN 61326-1:2006 class B
interference immunity EN 61326-1:2006

Mechanical Design
Housing impact resistant ABS with unbreakable display cover
Protection housing: IP 65
Dimensions 60 x 230 x 40 mm
Weight 180 g (including battery)