Extech Instruments Extech 470 Guia do Utilizador

User's Guide True RMS Multimeter plus IR Thermometer Extech 470

EX470-EU-EN-V5.4-5/12 10CONTACT TEMPERATURE MEASUREMENTS 1. Set the function switch to the black Type K ºC or ºF position. 2. Insert the Temperature

EX470-EU-EN-V5.4-5/12 11CAPACITANCE MEASUREMENTS WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitor

EX470-EU-EN-V5.4-5/12 12AUTORANGING/MANUAL RANGE SELECTION When the meter is first turned on, it automatically goes into AutoRanging. This automatical

EX470-EU-EN-V5.4-5/12 13Specifications Function Range Resolution Accuracy 400mV 0.1mV (0.3% reading + 2 digits) 4V 0.001V 40V 0.01V 400V 0.1V (0.

EX470-EU-EN-V5.4-5/12 14Function Range Resolution Accuracy 5.000Hz 0.001Hz 50.00Hz 0.01Hz (1.5% reading + 5 digits) 500.0Hz 0.1Hz 5.000kHz 0.001kHz

EX470-EU-EN-V5.4-5/12 15Maintenance WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the input te

EX470-EU-EN-V5.4-5/12 16REPLACING THE FUSES WARNING: To avoid electrical shock, disconnect the meter from any circuit, remove the test leads from the

EX470-EU-EN-V5.4-5/12 2Introduction Congratulations on your purchase of the Extech 470 (part number EX470) True RMS Autoranging Multimeter plus IR The

EX470-EU-EN-V5.4-5/12 3CAUTIONS  Improper use of this meter can cause damage, shock, injury or death. Read and understand this user manual before op

EX470-EU-EN-V5.4-5/12 4OVERVOLTAGE CATEGORY III This meter meets the IEC 610-1-2001 standard for OVERVOLTAGE CATEGORY III. Cat III meters are protecte

EX470-EU-EN-V5.4-5/12 5Controls and Jacks 1. IR Thermometer and laser pointer 2. 4000 count LCD display 3. HOLD and Backlight button 4. SELECT but

EX470-EU-EN-V5.4-5/12 6Operating Instructions WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be

EX470-EU-EN-V5.4-5/12 7AC VOLTAGE MEASUREMENTS WARNING: Risk of Electrocution. The probe tips may not be long enough to contact the live parts inside

EX470-EU-EN-V5.4-5/12 8AC CURRENT MEASUREMENTS CAUTION: Do not make current measurements on the 20A scale for longer than 30 seconds. Exceeding 30 se

EX470-EU-EN-V5.4-5/12 9CONTINUITY CHECK WARNING: To avoid electric shock, never measure continuity on circuits or wires that have voltage on them. 1.