Flir Extech EX840 User's Guide

Flir Extech EX840 Clamp Meter manual cover

Pages 12

Year 2013

Language(s)

of 12

Flir Extech EX840 Clamp Meter Specification

The Flir Extech EX840 Clamp Meter is a versatile, high-performance instrument designed for accurate electrical measurements in a variety of settings. It combines the functionality of a digital multimeter with a built-in infrared thermometer, making it ideal for troubleshooting electrical, HVAC, and mechanical systems. The clamp meter offers a current measurement range up to 1000A for both AC and DC, utilizing a 1.7-inch jaw that accommodates large conductors. It supports a voltage measurement range up to 1000V for both AC and DC, ensuring comprehensive electrical analysis capabilities. The EX840 features a True RMS measurement function, which provides accurate readings even in environments with non-linear loads or distorted waveforms.

Additionally, the device is equipped with an infrared thermometer capable of measuring temperatures from -58°F to 518°F (-50°C to 270°C) with a distance-to-spot ratio of 8:1. This feature facilitates the non-contact detection of hot spots and thermal irregularities. The meter includes a Type K thermocouple input for contact temperature measurements, expanding its thermal analysis applications. The EX840 is designed with a large, backlit LCD display that ensures easy readability in various lighting conditions. It boasts a range of user-friendly features such as data hold, peak hold, and a min/max function for capturing fluctuating measurements over time.

Safety is a priority in its design, as it complies with CAT IV-600V and CAT III-1000V safety standards, providing reliable protection during use. The meter is built to withstand demanding environments and offers an auto power-off function to conserve battery life. The Flir Extech EX840 is an indispensable tool for professionals requiring accurate, multi-functional electrical diagnostics in a single, durable device.

Flir Extech EX840 Clamp Meter F.A.Q.

How do I measure AC current using the Flir Extech EX840 clamp meter?

To measure AC current, set the rotary switch to the "A~" position. Open the clamp meter jaws by pressing the trigger, and then close them around a single conductor to obtain the current reading on the display.

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

First, check the battery compartment and ensure that the batteries are properly installed. Replace the batteries if needed. If the issue persists, inspect the fuse and replace it if it is blown.

Can the Flir Extech EX840 measure temperature and how?

Yes, the EX840 can measure temperature using the built-in IR thermometer. Set the rotary switch to the IR temperature position, aim the meter at the object, and press the IR key to take a reading.

How do I perform a continuity test with the EX840 clamp meter?

Set the rotary switch to the continuity test position, insert the test leads into the meter, and touch the probes to the circuit/component. If continuity is present, the meter will emit a beep sound.

What is the process for measuring DC voltage with this meter?

To measure DC voltage, turn the rotary switch to the "V⎓" position. Connect the test leads to the circuit; the red lead to the positive and the black lead to the negative terminal, then read the value on the display.

How can I calibrate the Flir Extech EX840 clamp meter?

Calibration should be performed by a qualified technician. It's recommended to send the meter to an authorized service center to ensure accuracy and compliance with specifications.

What steps should I follow for safe operation of the clamp meter?

Always inspect the meter and test leads for any damage before use. Use the correct settings for the measurement being taken, and never exceed the rated input limits to avoid damage and ensure safety.

How do I use the MIN/MAX function on the EX840?

Press the MIN/MAX button to activate the function. The meter will then record and display the minimum and maximum readings. Press the button again to cycle through the recorded values.

What should I do if the readings are unstable or incorrect?

Ensure that the test leads and connections are secure and not faulty. Verify that the meter settings are correct for the measurement. If issues persist, consider recalibrating the meter or consulting technical support.

How do I replace the batteries in the EX840?

Turn the meter off and remove the test leads. Open the battery compartment on the back of the meter, replace the old batteries with new ones, ensuring correct polarity, and close the compartment securely.