Low-Resistance Measurement (Continuity Check); Zero Ω Adj. Function; Measurement - KYORITSU KEW3552 Instruction Manual

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9. Low-resistance measurement (Continuity check)

# DANGER
Do not apply voltage to the low resistance range. Always check the circuit or
equipment under test is surely de-energized before starting a measurement.
9-1 Zero Ω ADJ. function
This function is to null the resistances (up to 3 Ω) of the test lead or internal
circuit to display the resistance of the equipment under test only.
Setting:
(1) Set the function switch to V/ Ω position.
(2) I f the instrument is in the voltage measurement mode, press the SELECT
button (< 1 sec) and switch the mode to low-resistance measurement.
(3) S hort the test leads: red lead connected to LINE terminal and black lead
connected to EARTH terminal.
(4) P ress the 0ΩADJ button while the test button is locked or the remote
control switch is held. Then the LCD shows 0.00 Ω with
T he nulled value is saved and won t be cleared even after powering off the
instrument.
(5) T o clear this nulled value, keep the test leads open-circuit status and press
the 0ΩADJ button (short press). The symbol
● T his 0 ADJ. function doesn t work if the reading is 3 Ω or higher; the
LCD shows no even the 0ΩADJ button is pressed.

9-2 Measurement

(1) Set the function switch to V/ Ω position.
(2) I f the instrument is in the voltage measurement mode, press the SELECT
button (< 1 sec) and switch the mode to low-resistance measurement.
(3) C onnect the test leads to the object to be measured and press the test
button or remote-control switch.
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