RANRAO MT-19C Digital Moisture Meter User Manual

1. Introduction

Thank you for choosing the RANRAO MT-19C Digital Moisture Meter. This device is designed for precise and rapid measurement of moisture content in various materials, including softwood, hardwood, packing materials, and building materials. Its large color screen with backlight ensures clear readings in any lighting condition, making it an essential tool for professionals and DIY enthusiasts alike.

Key features include:

• Large LCD screen with backlight for clear visibility day or night.
• Four switchable measurement modes: Softwood, Hardwood, Packing Material, and Building Material.
• Humidity alarm with color-coded indicators (green for dry, yellow for average, red for wet).
• Detachable and replaceable high-strength probes.
• Integrated flashlight for measurements in low-light environments.
• Data hold function to lock readings on the screen.

Figure 1.1: The RANRAO MT-19C Digital Moisture Meter. This image displays the front view of the moisture meter, highlighting its large color display and ergonomic design.

2. Safety Information

Please read and understand all safety instructions before operating the device. Failure to follow these instructions may result in injury or damage to the device.

• Probe Safety: The measurement probes are sharp. Handle with care to avoid puncture injuries. Keep out of reach of children.
• Battery Safety: Use only the specified battery type (3 x AAA batteries). Do not mix old and new batteries, or different types of batteries. Dispose of used batteries according to local regulations. Do not expose batteries to excessive heat or open flame.
• Environmental Conditions: Do not operate the device in extreme temperatures or high humidity environments outside the specified operating range (0-40℃). Avoid direct exposure to water or other liquids.
• Maintenance: Do not attempt to disassemble or modify the device. Refer all servicing to qualified personnel.
• Intended Use: This device is intended for measuring moisture content in materials as specified. Do not use it for any other purpose.

3. Package Contents

Verify that all items are present in the package:

• 1 x RANRAO MT-19C Digital Moisture Meter
• 1 x Small Wrench (for probe replacement)
• 2 x Replacement Probes
• 1 x User Manual
• 1 x Storage Bag

4. Product Overview and Components

Familiarize yourself with the different parts of your MT-19C moisture meter:

Figure 4.1: Detailed diagram of the MT-19C Moisture Meter's components and display indicators. This image labels various parts such as the measuring probe, moisture indicator light, flashlight, battery level, measurement value display, data retention indication, mode selection button, power switch, and non-slip pad design.

1. Measuring Probe: Used to penetrate the material and detect moisture.
2. Moisture Indicator Light: Displays moisture level (Low, Mid, High) with corresponding colors.
3. Flashlight: Illuminates the measurement area in low light.
4. LCD Screen: Large color display showing moisture percentage, mode, battery level, and alarm status.
5. Battery Level Indicator: Shows remaining battery power.
6. Measurement Value Display: Digital readout of moisture percentage.
7. Data Retention Indication (HOLD): Indicates when the data hold function is active.
8. MODE Button: Cycles through measurement modes (Softwood, Hardwood, Packing, Building).
9. Flashlight Switch Key: Activates/deactivates the flashlight.
10. HOLD Button: Locks the current measurement reading on the screen.
11. Power Switch: Turns the device on or off.
12. Non-slip Pad Design: Provides a secure grip.

5. Setup

5.1 Battery Installation

The MT-19C requires three AAA batteries (not included). Follow these steps to install or replace batteries:

1. Locate the battery compartment cover on the back of the device.
2. Slide the cover open.
3. Insert three AAA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
4. Close the battery compartment cover securely.

Figure 5.1: Illustration of battery installation. This image shows the back of the moisture meter with the battery compartment open, demonstrating how to insert three AAA batteries.

Note: When the meter screen displays a low battery indicator, it signifies that the batteries are nearly depleted and should be replaced immediately.

5.2 Probe Installation and Replacement

The MT-19C features detachable probes for easy replacement. Use the included small wrench for this process:

1. To remove a probe, use the small wrench to loosen the base of the probe by turning it counter-clockwise.
2. Carefully pull out the old probe.
3. Insert a new probe into the opening.
4. Use the wrench to tighten the new probe by turning it clockwise until secure. Do not overtighten.

Figure 5.2: Steps for probe disassembly and replacement. This image illustrates how to use the provided wrench to remove and install the measurement probes.

6. Operating Instructions

6.1 Powering On/Off

• To turn on the device, press the Power Switch button (labeled with a power symbol) located at the bottom of the device.
• To turn off the device, press and hold the Power Switch button until the screen turns off. The device also features an auto-off function to conserve battery life if left idle for a period.

6.2 Selecting Measurement Mode

The MT-19C offers four measurement modes optimized for different material types. Press the MODE button to cycle through them:

• Softwood: For measuring moisture in soft wood types.
• Hardwood: For measuring moisture in hard wood types.
• Packing Material: For measuring moisture in cardboard, paper, and other packing materials.
• Building Material: For measuring moisture in walls, concrete, plaster, and other construction materials.

Figure 6.1: The MT-19C in operation, showing the measurement range and resolution. This image displays the meter's screen with a moisture reading and indicates the measurement range of 0-75% and resolution of 0.1%.

6.3 Taking Measurements

1. Turn on the device.
2. Select the appropriate measurement mode using the MODE button.
3. Carefully insert the probes into the material you wish to measure. Ensure both probes fully penetrate the surface for accurate readings.
4. The moisture percentage will be displayed on the LCD screen.

6.4 Understanding Humidity Alarm and Indicators

The MT-19C provides a quick visual indication of moisture levels through its color-coded humidity alarm:

• Green Light: Indicates low moisture content (dry).
• Yellow Light: Indicates average (medium) moisture content.
• Red Light: Indicates high moisture content (wet).

Figure 6.2: Visual representation of the humidity alarm. This image shows the moisture meter displaying green, yellow, and red lights corresponding to low, average, and high moisture content, respectively.

6.5 Data Hold Function

To lock the current measurement reading on the screen, press the HOLD button. This is useful for recording readings in hard-to-reach areas. Press the HOLD button again to release the reading and resume live measurement.

Figure 6.3: Demonstration of the data hold function. This image highlights the "HOLD" indicator on the screen, showing how to lock data for more efficient use.

6.6 Flashlight Function

The MT-19C is equipped with a built-in flashlight to assist with measurements in dark or low-light conditions. Press the Flashlight Switch Key (labeled with a flashlight icon) to turn the flashlight on or off.

Figure 6.4: The integrated flashlight in action. This image shows the moisture meter's flashlight illuminating an area, demonstrating its utility in low-light environments.

7. Maintenance

• Cleaning: Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents. Do not immerse the device in water.
• Storage: When not in use for extended periods, remove the batteries to prevent leakage. Store the device in its storage bag in a cool, dry place, away from direct sunlight and extreme temperatures.
• Probe Care: Keep the probes clean and free from debris. If probes become dull or damaged, replace them using the instructions in Section 5.2.

8. Troubleshooting

9. Specifications

10. Warranty and Support

RANRAO is committed to providing high-quality products. For warranty information, technical support, or service inquiries, please contact your retailer or the manufacturer directly. Please retain your proof of purchase for warranty claims.

For the most up-to-date support information, please visit the official RANRAO website or contact their customer service department.