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EX730 Datasheet(PDF) 9 Page - Extech Instruments Corporation. |
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EX730 Datasheet(HTML) 9 Page - Extech Instruments Corporation. |
9 / 12 page EX700 Series Version 3.0 1/05 9 Temperature Measurements (Models EX720 and EX730 only) 1. Set the function switch to the TEMP position. 2. Insert the Temperature Probe into the negative COM and the V· Ω·CAP·TEMP·Hz· positive jacks, observing polarity. 3. Touch the Temperature Probe head to the device under test. Continue to touch the part under test with the probe until the reading stabilizes. 4. Read the temperature on the display. The digital reading will indicate the proper decimal point and value. 5. Use the MODE button to select oF or oC. WARNING: To avoid electric shock, be sure the thermocouple probe has been removed before changing to another measurement function. Continuity Measurements 1. Insert the black test lead into the negative COM terminal and the red test lead into the V· Ω·CAP·TEMP·Hz· positive terminal. 2. Set the function switch to the •))) position. 3. Use the MODE button to select continuity “•)))”. The display icons will change when the MODE button is pressed. 4. Touch the test probe tips across the circuit or component under test. 5. If the resistance is < 40 Ω, a tone will sound. Diode Test 1. Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the V· Ω·CAP·TEMP·Hz· positive jack 2. Turn the function switch to position. Use the MODE button to select the diode function if necessary (diode symbol will appear on the LCD when in Diode test mode) 3. Touch the test probe tips to the diode or semiconductor junction under test. Note the meter reading 4. Reverse the test lead polarity by reversing the red and black leads. Note this reading 5. The diode or junction can be evaluated as follows: If one reading displays a value (typically 0.400V to 0.900V) and the other reading displays OL, the diode is good. If both readings display OL the device is open. If both readings are very small or ‘0’, the device is shorted. |
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