Contents

User Manual
Extech EX820 True RMS 1000 Amp Clamp Meter with IR Thermometer
- Introduction
- Safety
- Description
AC Current Measurements
AC/DC Voltage Measurements
Resistance Measurements
Note: Remove power before making resistance measurements
Capacitance Measurements
Note: For very large values of capacitance measurement time can be several minutes before the final reading stabilizes.
Frequency Measurements
Type K Temperature Measurements
WARNING: To avoid electric shock, be sure the thermocouple probe has been removed before changing to another measurement function.
Note: The meter will display OL and beep when there is an open input or temperature overrange.
Note: See the Temperature Units paragraph to select F or C
Note: The temperature range of the supplied thermocouple probe is -20 to 250 C (-4 to 482 F)
Continuity Measurements
Diode Test
Non-Contact InfraRed Temperature Measurements
Note: See the Temperature Units paragraph to select oF or oC
IR Measurement Notes
Data Hold
Peak Hold
MAX/MIN
1. Press the MAX/MIN key to activate the MAX/MIN recording mode. The display icon "MAX" will appear. The meter will display and hold the maximum reading and will update only when a new max occurs.
2. Press the MAX/MIN key and MIN will appear The display icon "MIN" will appear. The meter will display and hold the minimum reading and will update only when a new min occurs
3. Press the MAX/MIN key and a blinking MAX MIN will appear. The meter will display the present reading, but will continue to update and store the max and min readings.
4. To exit MAX/MIN mode press and hold the MAX/MIN key for 2 seconds.
Temperature Units (F / C)
LCD Backlight Button
Automatic Power OFF

Flir Extech EX820 User Manual

Flir Extech EX820 Clamp Meter manual cover

Pages 12

Year 2013

Language(s)

of 12

Flir Extech EX820 Clamp Meter Specification

The Flir Extech EX820 Clamp Meter is a versatile and robust tool designed for electrical professionals requiring precise measurements in a compact form. This device is engineered to provide accurate AC/DC current readings up to 1000A and voltage measurements up to 600V, catering to a wide range of electrical testing applications. The EX820 features a 1.7-inch jaw opening, allowing for easy clamping around large conductors, and includes a built-in non-contact voltage detector for added safety when assessing live circuits.

The meter is equipped with a True RMS function, ensuring accurate readings even in environments with distorted waveforms, which is critical for obtaining reliable data in modern electrical systems. The EX820 also offers a resistance measurement capability up to 40MΩ and includes a continuity buzzer for quick circuit checks. This model is designed with a dual backlit display that enhances readability in low-light conditions, and its ergonomic design ensures comfortable handling during prolonged use.

Additional features include a diode test function and a data hold function that allows users to freeze readings on the display for convenient recording. The EX820 is constructed to withstand harsh job site conditions, with a durable housing that provides a secure grip and protection against impacts. It is powered by a standard 9V battery, ensuring long operational life, and is accompanied by test leads and a carrying case for easy transport and storage. The Flir Extech EX820 Clamp Meter is an essential tool for electricians and technicians seeking a reliable, accurate, and user-friendly solution for their electrical measurement needs.

Flir Extech EX820 Clamp Meter F.A.Q.

How do I measure AC current using the Flir Extech EX820 Clamp Meter?

To measure AC current, switch the meter to the AC current mode, open the clamp jaws by pressing the trigger, enclose the conductor to be measured, and read the current value on the display. Ensure that the conductor is centered within the jaws for accurate readings.

What should I do if the clamp meter display is not turning on?

Check if the batteries are properly installed and have sufficient charge. Replace the batteries if necessary. Also, ensure the power button is pressed firmly. If the issue persists, inspect the battery contacts for corrosion and clean them if needed.

How can I ensure accurate readings when measuring voltage?

Ensure that the test leads are in good condition and properly connected to the meter. Select the appropriate voltage range and ensure good contact with the measurement points. For AC measurements, be aware of possible interference from nearby electromagnetic fields.

What maintenance practices should I follow to keep my EX820 in good condition?

Regularly clean the clamp meter using a soft, dry cloth. Avoid using solvents or abrasive cleansers. Check the test leads for damage and replace them if necessary. Store the meter in a dry, dust-free environment to prevent damage.

How can I test the meter's continuity function?

Set the meter to the continuity setting, which is usually indicated by a diode symbol. Connect the test leads to the circuit or component. A continuous tone will be heard if the circuit is closed, indicating continuity.

Can the EX820 measure DC current, and if so, how?

Yes, the EX820 can measure DC current. Select the DC current mode, open the clamp jaws, and enclose the conductor. Make sure the conductor is fully within the jaws. The current reading will be displayed on the screen.

What is the procedure to calibrate the EX820 clamp meter?

Calibration should be performed by a certified professional to ensure accuracy. It typically involves comparing the meter readings with a known standard and adjusting the meter as needed to correct any discrepancies.

How do I replace the batteries in the EX820?

Turn off the meter and remove the test leads. Open the battery compartment cover on the back of the meter. Replace the old batteries with new ones, ensuring correct polarity. Close the compartment securely before using the meter.

What should I do if the clamp meter gives erratic readings?

Ensure the meter is set to the correct measurement mode and range. Check for any loose or damaged test leads. Verify the integrity of the connections and the condition of the conductor being measured. If the problem persists, consult the user manual or contact technical support.

How can I measure resistance with the EX820?

Set the meter to the resistance mode (indicated by the ohm symbol). Connect the test leads to the component or circuit. Ensure the circuit is de-energized before taking measurements. The resistance value will be displayed on the meter.