Maintenance And Calibration; Technical Data And Accuracy - Conrad Electronic VC-200 Green DMM Mode D'emploi

For resistors over 2 MOhm the display needs a few seconds to
stabilize. As soon as "-1" or "1" is displayed you exceeded the
measuring range or the leads are open.

6. Maintenance and Calibration

Calibrate the meter once a year to maintain its accuracy over a longer
period of time.
Fuse replacement is described in point 2. (Safety Rules).
Charging of the High Cap (capacitor) is described in point 4.1.
Clean the unit and the display with a soft, dry, antistatic cloth.
Attention!
Do not use abrasive detergents, gasoline, alcohol or similar.
These detergents could damage the surface of the measuring
unit. Besides solvent fumes are dangerous to your health and
explosive.

7. Technical Data and Accuracy

7.1 Technical Data
Display ............................... : 3 1/2-digit LC-Display to 1999 with
automatic polarity display
Overflow ............................ : when the range is exceeded "1" or
"-1" is displayed.
Max. Measuring Rate ......... : 2.5 measurements per second
Max. input current AC/DC : 20 A
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Operating Temperature ...... : 0 to +50°C, relative humidity of max.
70%
Storage Temperature ......... : -20°C to +60°C, rel. humidity < 80%,
battery removed
Temperature Coefficient .... : +23°C +/-5°C, rel. humidity <75%
Operatin Time "fullcharged": approx. 2.5 hours
Weight ................................ : 210 g (without test-leads)
Dimensions ......................... : 176 x 85 x 34 mm
(L x W x H)
7.2 Accuracy
Accuracy in complete spec is given as ± (% of reading + number of
least significant digit(s) = dgt(s)).
S30.0MM,60.0MM,90.0MM,125.0MM
Mode Meas. Range
±(0.5% +2dgts)
DC 200 mV
±(0.5% +2dgts)
Voltage 2 V
20 V
200 V
±(0.8%+3dgts)
1000V
In the range of 50 Hz to 400 Hz
±(0.8%+5dgts)
AC 2 V
Voltage 20 V
200 V
±(1%+5dgts)
750 V
Test Current: 1 mA ±0.6 mA, accuracy: ±
Diode Test
(3%+1dgt)
Voltage at the open circuit approx. 3 VDC, measure-
ment of forward voltage.
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Accuracy Resolution
100 uV
1 mV
——"—— 10 mV
——"—— 100 mV
1 V
1 mV
——"—— 10 mV
——"—— 100 mV
1 V