Flir DM91 User Manual

Pages 41

Year 2019

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Flir DM91 Multimeter Specification

The Flir DM91 Multimeter is a professional-grade digital multimeter designed for precise and reliable electrical diagnostics. Equipped with advanced data collection capabilities, it is tailored for both industrial and commercial applications. This device features a 6000-count display, ensuring high accuracy in readings. It supports a range of measurements including voltage, current, resistance, frequency, capacitance, and temperature, making it versatile for various testing scenarios. The multimeter is CAT IV-600V and CAT III-1000V safety rated, providing robust protection for electrical work in demanding environments. The DM91 integrates a Bluetooth connectivity feature, facilitating wireless data transfer to mobile devices via the FLIR Tools Mobile app, which enhances data analysis and reporting efficiency. This connectivity also enables remote viewing and sharing of data, making it convenient for collaborative troubleshooting. The device is equipped with a VFD mode for accurate voltage and frequency measurements on variable frequency drives, improving its utility in complex electrical settings. Its durable and ergonomic design includes a backlit display for visibility in low-light conditions, and its intuitive interface ensures ease of use. The FLIR DM91 is powered by a rechargeable lithium polymer battery, ensuring long-lasting operation. With its comprehensive feature set and robust design, the Flir DM91 Multimeter is an essential tool for professionals seeking precision and efficiency in electrical diagnostics.

Flir DM91 Multimeter F.A.Q.

How do I measure AC voltage using the Flir DM91 Multimeter?

To measure AC voltage with the Flir DM91, turn the rotary switch to the V~ (AC voltage) position. Connect the black test lead to the COM terminal and the red test lead to the VΩ terminal. Place the test leads across the circuit or component you want to measure and read the value on the display.

What should I do if the multimeter does not power on?

If the Flir DM91 does not power on, first check the battery compartment to ensure the batteries are installed correctly and are not depleted. Replace them if necessary. Additionally, verify that the battery contacts are clean and free from corrosion.

How can I use the Flir DM91 to test continuity?

To test continuity, set the rotary switch to the continuity test position (indicated by a diode symbol with sound waves). Connect the black test lead to the COM terminal and the red test lead to the VΩ terminal. Place the test leads across the component or circuit and listen for a beep indicating continuity.

What steps should I follow to measure resistance?

To measure resistance with the DM91, set the rotary switch to the Ω (resistance) position. Connect the black test lead to the COM terminal and the red test lead to the VΩ terminal. Ensure the circuit is de-energized, then place the test leads across the resistor or component. The resistance value will appear on the display.

Why is the display showing an error message while measuring current?

An error message on the display during current measurement can occur if the test leads are connected to the wrong terminals. Ensure the red test lead is connected to the correct terminal (A for high current, μA/mA for low current) and that the rotary switch is set to the appropriate current measurement position.

How do I perform a diode test using the Flir DM91?

To perform a diode test, set the rotary switch to the diode test position (indicated by a diode symbol). Connect the black test lead to the COM terminal and the red test lead to the VΩ terminal. Place the red lead on the anode and the black lead on the cathode of the diode. The multimeter will display the forward voltage drop.

What maintenance procedures should I follow for the Flir DM91?

Regularly inspect the Flir DM91 for any physical damage and ensure the test leads are in good condition. Clean the meter with a soft, dry cloth and avoid using harsh chemicals. Replace the batteries when indicated by the low-battery warning to ensure accurate readings.

How can I update the firmware of the Flir DM91?

To update the firmware of the Flir DM91, visit the FLIR website to download the latest firmware version. Connect the multimeter to your computer using a USB cable, then follow the instructions provided with the firmware download to complete the update process.

What should I do if the Flir DM91 gives inconsistent readings?

If the multimeter provides inconsistent readings, ensure the test leads are properly connected and not damaged. Check the battery level and replace if necessary. If the issue persists, consider recalibrating the device or consulting the user manual for further troubleshooting steps.

Can the Flir DM91 measure temperature, and if so, how?

Yes, the Flir DM91 can measure temperature using a thermocouple. Connect the thermocouple to the multimeter, set the rotary switch to the temperature measurement position, and select the appropriate temperature unit. Place the thermocouple on the object or area to measure its temperature.