Extech Instruments EX470A Скачать руководство пользователя | Manualshive

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Содержание EX470A

Страница 1: ...INSTRUMENTS True RMS Multimeter plus IR Thermometer Extech EX470A CE 1R IllTEMP H0lD REL M 0 i11111i1 0000 EJC tiSl f D c J J Test Equipment Depot 800 517 8431 99 Washington Street Melrose MA 02176 TestEquipmentDepot com ...

Страница 2: ...tages may be present IDI Double insulation IWARNING I ICAUTION I r MAX _soov This WARNING symbol indicates a potentially hazardous situation which if not avoided could result in death or serious injury This CAUTION symbol indicates a potentially hazardous situation which if not avoided may result damage to the product This symbol advises the user that the terminal s so marked must not be connected...

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Страница 4: ...tv Temoerature 60VDC 24VAC 2 USE EXTREME CAUTION when working with high voltages 3 DO NOT measure voltage if the voltage on the C OM inputjack exceeds 600Vabove earth ground 4 NEVER connect the meter leads across a voltage source while the function switch is in the current resistance or diode mode Doing so can damage the meter 5 ALWAYS discharge filter capacitors in power supplies and disconnect t...

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Страница 6: ...g will stabilize and give a proper measurement when connected to a circuit DC VOLTAGE MEASUREMENTS CAUTION Do not measure DC voltages if a motor on the circuit is being switched ON or OFF Large voltage surges may occur that can damage the meter 1 Set the function switch to the green V position 2 Press the SELECT button to indicate DC on the display 3 Insert the black test lead banana plug into the...

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Страница 9: ...audible signal will sound If the circuit is open the display will indicate OL DIODE TEST 1 Set the function switch to the green o i l1 position 2 Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Vjack 3 Press the SELECT button to indicate i and Von the display 4 Touch the test probes to the diode under test Forward voltage will t...

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Страница 12: ...EL indicator will appear on the display 3 The display will now indicate the difference between the stored value and the measured value 4 Press the REL button to exit the relative mode Note The Relative function does not operate in the Frequency function DISPLAY BACKLIGHT Press and hold the HOLD key for 1 second to tum on or off the display backlight function Note The HOLD feature will activate whe...

Страница 13: ...A AC Current 50 to 400Hz 400Hz to 1KHz 400 A 0 1 A 1 8 reading 8 digits 3 0 reading 7 digits 4000 A 1 A 40mA 0 01mA 400mA 0 1mA 4A 0 001A 3 0 reading 8 digits 3 5 reading 10 digits 10A 0 01A Resistance 400 0 1 0 8 reading 4 digits 4k 0 001k 0 8 reading 2 digits 40k 0 01k 1 0 reading 2 digits 400k 0 1k 4M 0 001M 40M 0 01M 3 0 reading 5 digits Capacitance 40nF 0 01nF 5 0 reading 7 digits 400nF 0 1nF...

Страница 14: ...ed IR distance ratio 8 1 Input Impedance 7 5MΩ VDC VAC AC Response True rms ACV Bandwidth 50Hz to 1kHz Crest Factor 3 1 at full scale 6 1 at half scale Display 4000 count backlit liquid crystal Overrange indication OL is displayed Auto Power Off 15 minutes approximately Polarity Automatic no indication for positive Minus sign for negative Measurement Rate 2 times per second nominal Low Battery Ind...

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Страница 16: ...ver 5 Lift the center circuit board straight up from the connectors to gain access to the fuse holders 6 Gently remove the old fuse and install the new fuse into the holder 7 Always use a fuse of the proper size and value 0 5A 600V fast blow for the 400mA range 10A 600V fast blow for the 10A range 8 Align the center board with the connectors and gently press into place 9 Replace and secure the rea...

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