LIMIT 310, Operating Manual, Page: 10 / 132

8
Note:
• Before measuring resistance, switch off the power supply of the circuit, and fully
discharge all capacitors.
• If the resistance when probes are shorted is more than 0.5 Ω , please check if test leads
are loosened or damaged.
• If the resistor is open or over the range, the "OL" symbol will be displayed on the
screen.
• When measuring low resistance, the test leads will produce 0.1 Ω ~ 0.2 Ω measurement
error. To obtain accurate measurement, the measured value should subtract the value
displayed when two test leads are shorted.
• When measuring high resistance above 1 M Ω , it is normal to take a few seconds to
steady the readings. In order to quickly obtain steady data, use short test wires to
measure high resistance.
TECHNICAL SPECIFICATION
Accuracy: ± (% of r numerical value in least significant digit slot).
Note: Temperature coefficient = 0.1 × (specified accuracy) / °C (<18°C or >28°C)
Function Range Resolution Accuracy Notification
DC Voltage
200 mV 0.1 mV ± (0.7%+3) Overload protection:
250 Vrms (AC/DC)
Input impedance: about l0 M Ω .
Results might be unstable
at mV range when no load
I s c o n n e c t e d . T h e v a l u e
becomes stable once the load
is connected. Least significant
digit ≤ ±3.
Max input voltage: ±250 V,
when the voltage ≥ 610 V, "OL"
symbol appears.
2000 mV 1 mV ± (0.5%+2)
20.00 V 0.01 V ± (0.7%+3)
200.0 V 0.1 V ± (0.7%+3)
250 V 1 V ± (0.7%+3)
AC Voltage
200.0 V 0.1 V ± (1.2% +3) Input impedance: about 10 M Ω .
Frequency response:
40 Hz ~ 400 Hz, sine wave RMS
(average response).
Max input voltage: ±250 V,
when the voltage ≥ 610 V, "OL"
symbol appears.
250 V 1 V ± (1.2% +3)
GB