EX470A - Multimeter Extech - Free user manual and instructions
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| Product Type | Digital Multimeter |
| Brand | Extech |
| Model | EX470A |
| Display | 4000-count LCD with backlight |
| AC Voltage Range | 0.1mV to 600V |
| DC Voltage Range | 0.1mV to 600V |
| AC Current Range | 0.1µA to 10A |
| DC Current Range | 0.1µA to 10A |
| Resistance Range | 0.1Ω to 40MΩ |
| Capacitance Range | 1nF to 100µF |
| Frequency Range | 10Hz to 10MHz |
| Temperature Range | -20°C to 1000°C (with thermocouple) |
| Diode Test | Yes |
| Continuity Test | Audible beep |
| Data Hold | Yes |
| Auto-Ranging | Yes |
| Safety Rating | CAT II 600V, CAT III 300V |
| Power Source | 9V battery (NEDA 1604) |
| Dimensions | 150 x 70 x 30 mm |
| Weight | 200 g (including battery) |
| Accessories Included | Test leads, thermocouple, battery |
| Maintenance | Wipe with damp cloth; replace battery when low |
| Repairability | Replaceable fuse and battery; calibration recommended annually |
Frequently Asked Questions - EX470A Extech
How do I measure AC voltage with the EX470A?
Set the rotary switch to the AC voltage position (V~). Insert the black lead into COM and the red lead into VΩ. Connect the probes across the source and read the display.
How do I test continuity?
Turn the dial to the continuity position (usually marked with a diode symbol). Connect the leads to the circuit. A beep indicates continuity below a threshold (typically <50Ω).
What does the Data Hold button do?
Pressing the Data Hold button freezes the current reading on the display. Press again to release.
How do I replace the battery?
Turn off the meter and remove the battery compartment screw. Replace the old 9V battery with a new one, ensuring correct polarity. Reattach the cover.
What is the maximum voltage I can measure?
The EX470A can measure up to 600V AC or DC in the voltage ranges. Exceeding this may damage the meter or pose a safety hazard.
Does the EX470A measure temperature?
Yes, with the included thermocouple. Select the temperature mode (TEMP) and insert the thermocouple into the dedicated input. Read the temperature in °C or °F.
How do I measure current?
Set the dial to the current (A) range. For currents up to 200mA, use the mA and COM jacks; for higher current up to 10A, use the 10A and COM jacks. Connect the meter in series with the load.
What safety precautions should I take?
Always start with the highest range. Use appropriate leads with protective caps. Never measure voltages above 600V. Ensure proper installation of the battery and fuse. Disconnect power before switching ranges.
How do I clean the multimeter?
Wipe the exterior with a damp, mild soapy cloth. Dry thoroughly before use. Do not use solvents or abrasives. Keep the input terminals clean.
Why does my meter show 'OL'?
OL indicates an over-range or open circuit. This means the measured value exceeds the selected range or there is no continuity. Try selecting a higher range if measuring resistance.
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USER MANUAL EX470A Extech
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Product information
Brand : Extech
Model : EX470A
Category : Multimeter