This mode is intended for measuring contact and metal plating resistance levels, and as a general rule, any
resistance level with a time constant that is less than a few milliseconds. In this mode only one
measurement is performed per cycle.
Make sure that the display shows the icon.
The advantages of this mode include:
Increasing unit autonomy.
Reduced power consumption as the current is cut between measurements.
Less heating of the measured resistor.
Improved compensation of stray emfs as these are measured and compensated before each resistance
measurement.
From the standby position, to start a cycle:
Press .
Check that the "current" and "voltage" wires are correctly connected: if they are incorrectly connected, the
display shows an error message with a number (Err 11: "current" wires incorrectly connected, Err 12:
"voltage" wires incorrectly connected). The unit returns to the standby position.
With the current switched off, the residual voltage (U0) across the resistor terminals is measured. If this
voltage level is too high, the unit displays Err 13 and returns to standby position.
The current (I) is switched on.
The voltage across the resistor (U1) is measured, then the current is cut.
The measurement R = (U1 – U0) / I or an error message Err 07 is displayed, if an overrange occurs.
Return to the standby position at the end of the measurement. The unit is ready to perform another
measurement.
Operating diagram
Example: two measurement cycles
C = connection check
0 = residual voltage measurement
M = measurement of the voltage across the resistor terminals.
REMARKS:
If the range is exceeded, the unit displays Err 07.
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