Extech Instruments EX230 Podręcznik Użytkownika Pobierz pdf (Strona 8)

EX230-EU-EN-V1.2-09/10 8

CONTACT TEMPERATURE MEASUREMENTS (THERMOCOUPLE PROBE)

1. Rotate the function switch to the °F or °C position.

2. Insert the temperature probe adaptor into the negative COM jack and the positive TEMP

jack (the adaptor is labeled plus + and minus -)

3. Touch the temperature probe tip to a surface or leave

suspended in air.

4. Read the temperature in the display.

CONTINUITY CHECK

WARNING: To avoid electric shock, never measure continuity on circuits or wires that

have a voltage potential.

1. Rotate the function switch to the position.

2. Press the MODE button to indicate on the display.

3. Insert the black lead banana plug into the negative COM jack.

Insert the red test lead banana plug into the positive jack.

4. Touch the test probe tips to the circuit or wire you wish to check.

5. If the resistance is less than the continuity threshold, the audible signal will

sound.

DIODE TEST

1. Rotate the function switch to the green position.

2. Press the MODE button to indicate “ “ and “V” on the display.

3. Insert the black test lead banana plug into the negative COM jack and the

red test lead banana plug into the positive jack.

4. Touch the test probes to the diode under test. Forward voltage will

typically indicate 0.400 to 0.700V. Reverse voltage will indicate “OL”.

Shorted devices will indicate near 0V and an open device will indicate

“OL” in both polarities.

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Extech Instruments EX230 Podręcznik Użytkownika Strona 8