MUSTOOL MT14S / MT14SPRO Thermal Imaging Multimeter User Manual

1. Introduction

The MUSTOOL MT14S and MT14SPRO are advanced thermal imaging multimeters designed for professionals and DIY enthusiasts. These devices combine the functionality of a digital multimeter with a high-resolution thermal imaging camera, allowing for comprehensive electrical measurements and visual temperature analysis. This manual provides essential information for safe and effective operation, setup, and maintenance of your device.

2. Safety Information

WARNING: Read all safety warnings and instructions before using this product. Failure to follow the warnings and instructions may result in electric shock, fire, or serious injury.

• Always ensure the device is in good working condition before use. Inspect test leads for damage.
• Do not apply more than the rated voltage, as marked on the instrument, between the terminals or between any terminal and earth ground.
• Use caution when working with voltages above 30V AC RMS, 42V peak, or 60V DC. These voltages pose a shock hazard.
• Always disconnect the test leads from the circuit before changing functions or ranges.
• Do not operate the meter in explosive gas, vapor, or dust environments.
• Ensure proper polarity when connecting test leads.
• Replace the battery immediately when the low battery indicator appears to ensure accurate readings.
• Refer to the specific category ratings (e.g., CAT II 600V) for safe measurement limits.

3. Package Contents

Please check the contents of your package upon receipt. If any items are missing or damaged, contact your vendor.

4. Product Overview

The MUSTOOL MT14S/MT14SPRO integrates a high-resolution thermal camera with a full-featured digital multimeter. It features a 2.8-inch IPS high-definition screen for clear display of both thermal images and electrical measurements.

The device is designed for portability and ease of use, allowing for quick identification of electrical faults and thermal anomalies.

5. Specifications

6. Setup

1. Unpacking: Carefully remove the multimeter and all accessories from the packaging.
2. Initial Inspection: Check the device and accessories for any signs of damage.
3. Battery Installation/Charging: The device typically comes with a built-in rechargeable battery. Connect the provided USB Type-C data line to the multimeter and a suitable USB power adapter (not included) to charge the device fully before first use.
4. Connecting Test Leads: Insert the red test lead into the 'VΩHz/N/L/A' input jack and the black test lead into the 'COM' input jack for most measurements. For current measurements, refer to the specific input jacks (e.g., 'A' for 10A).
5. Power On: Press and hold the power button (usually the 'IR/DMM MEMU' button) for 3 seconds to turn on the device.

7. Operating Instructions

The MT14S/MT14SPRO offers both multimeter and thermal imaging functionalities. Familiarize yourself with the button layout and their functions:

7.1. Multimeter Mode

1. Power On: Press and hold the 'IR/DMM MEMU' button for 3 seconds. The device will typically start in multimeter mode.
2. Switching Gears: Short press the 'SELECT REL' button to switch between different multimeter measurement functions (e.g., Voltage, Resistance, Diode, Capacitance, Frequency, Current).
3. Measurement: Connect the test leads to the circuit or component you wish to measure. The reading will be displayed on the screen.
4. Data Retention (HOLD): Short press the 'HOLD SAVE' button to freeze the current reading on the display. Press again to release.
5. Relative Value (REL): Long press the 'SELECT REL' button to toggle the relative value function, useful for zeroing out lead resistance or comparing measurements.
6. Flashlight: Long press the 'IR/DMM MEMU' button to turn the flashlight on/off.
7. AC/DC Selection: Use the 'IR/DMM AC/V' button to switch between AC and DC measurements when applicable.

7.2. Thermal Imaging Mode

1. Switching to Thermal Imaging: Short press the 'IR/DMM MEMU' button to switch from multimeter mode to thermal imaging mode.
2. Viewing Thermal Images: The screen will display a thermal image with temperature readings. Hotspots and cold spots will be visually represented.
3. Color Board Modes: The device offers 5 different color board modes to visualize temperature differences. Short press the 'RANGE REL' button to cycle through these modes (e.g., Iron Red, Rainbow, White Hot, Black Hot, etc.). This helps in identifying specific temperature patterns more clearly.

   

4. Saving Measurements/Images: Long press the 'HOLD SAVE' button to save the current thermal image or measurement data.
5. Menu Access: Long press the 'IR/DMM MEMU' button to access the settings menu for thermal imaging, where you can adjust emissivity, temperature units, and other parameters.

7.3. NCV/LIN Function

The Non-Contact Voltage (NCV) and Live Wire Identification (LIN) functions allow for safe detection of AC voltage without direct contact. Activate this function and bring the top of the multimeter near a conductor to detect live wires.

8. Maintenance

• Cleaning: Wipe the device with a dry, soft cloth. Do not use abrasive cleaners or solvents.
• Storage: Store the multimeter in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for extended periods, ensure the battery is partially charged (around 50%) to prolong its lifespan.
• Battery Care: Recharge the battery regularly, even if not in use, to prevent deep discharge.
• Test Leads: Regularly inspect test leads for cuts, cracks, or damaged insulation. Replace damaged leads immediately.
• Calibration: For professional use, periodic calibration by a qualified service center is recommended to ensure accuracy.

9. Troubleshooting

Device does not power on:

Ensure the battery is charged. Connect the device to a USB charger and try again. If the issue persists, contact support.

Inaccurate multimeter readings:

Check if the test leads are properly connected and undamaged. Ensure the correct measurement function and range are selected. Verify the battery level; low battery can affect accuracy.

Thermal image is blurry or unclear:

Ensure the lens is clean and free from dust or smudges. For the MT14SPRO, ensure the macro lens is correctly positioned if using for close-up thermal imaging. Adjust the focus if available (check manual for specific model features).

No thermal image displayed:

Ensure you are in thermal imaging mode. If the screen is blank or shows an error, try restarting the device. If the problem continues, there might be a hardware issue.

10. User Tips

• Emissivity Adjustment: For accurate thermal readings, especially on different materials, adjust the emissivity setting in the thermal imaging menu. Different surfaces emit infrared radiation differently.
• Environmental Factors: Be aware that ambient temperature, humidity, and reflective surfaces can affect thermal imaging accuracy.
• Regular Firmware Updates: Check the manufacturer's website periodically for any available firmware updates to ensure optimal performance and new features.
• Practice with Known Sources: To get familiar with the thermal imaging capabilities, practice on objects with known temperature differences (e.g., a warm cup next to a cold one).

11. Warranty and Support

MUSTOOL products are designed and manufactured to high-quality standards. For information regarding warranty coverage, technical support, or service, please refer to the warranty card included with your product or visit the official MUSTOOL website. Keep your purchase receipt as proof of purchase for warranty claims.