GOYOJO Digital Gauss Meter GT129-B Instruction Manual

1. Introduction and Overview

The GOYOJO Digital Gauss Meter GT129-B is a precision instrument designed for accurate measurement of magnetic fields. It is suitable for various applications including permanent magnets, DC motors, magnetic separators, and industrial components with residual magnetism. This device provides precise readings up to 2000 mT (20000 Gs) and features N/S pole detection, making it an essential tool for laboratory, manufacturing, and research environments.

Image: The GOYOJO Digital Gauss Meter GT129-B in operation, showing its display and key features.

2. Product Features

• High Precision Measurement: Offers three levels of accuracy (Class 1, 2, and 5) for flexible use. Basic error is ±2% for measurements up to 1000 mT and ±5% for those above 1000 mT, ensuring reliable results.
• Automatic Range Switching: The device automatically adjusts its measurement range, switching to 2000 mT when readings exceed 200 mT.
• Multiple Unit Display: Supports measurements in militesla (mT) and gauss (Gs), with easy conversion (1 mT = 10 Gs).
• User-Friendly Design: Features one-key zeroing, maximum value retention, a clear 4-digit backlit display, and automatic shutdown after 5 minutes of inactivity to conserve battery life.
• Versatile Hall Probes: Compatible with various Hall probes for specific applications, ensuring accurate magnetic field detection across different materials and industries.
• Low Power Consumption: Powered by a single 9V battery (included), offering energy efficiency and convenience for portable use.

Image: Detailed view of the high-standard radial Hall probe and its connection to the meter.

3. Package Contents

Verify that all items listed below are included in your package:

• Main Unit x1
• Magnetic Probe x1
• Storage Case x1
• Small Screwdriver x1
• 9V Battery x1
• User Manual x1

Image: All components included in the GOYOJO Digital Gauss Meter GT129-B package.

4. Setup

1. Battery Installation: Open the battery compartment on the back of the main unit. Insert the provided 9V battery, ensuring correct polarity. Close the compartment securely.
2. Probe Connection: Connect the Hall probe to the designated port on the top of the main unit. Ensure the connection is firm to prevent inaccurate readings.
3. Initial Power-On: Press the ON/OFF button to power on the device. The display will illuminate.

Image: Visual guide for connecting the probe and initiating a measurement.

5. Operating Instructions

5.1 Power On/Off

• Press the ON/OFF button to turn the meter on or off.
• The device will automatically power off after 5 minutes of inactivity.

5.2 Zeroing the Device

• Before taking a measurement, ensure the probe is away from any magnetic fields.
• Press the ZERO button to reset the display to 0.00 mT. This ensures accurate readings by compensating for any ambient magnetic interference.

5.3 Taking a Measurement

• Position the Hall sensor at the tip of the probe perpendicular to the magnetic field you wish to measure.
• The measurement value will be displayed on the screen. Allow the value to stabilize for an accurate reading.

5.4 Unit Switching (mT/Gs)

• Press the UNIT button to toggle between militesla (mT) and gauss (Gs) display units. (1 mT = 10 Gs).

5.5 Backlight Control

• Press the LIGHT button to turn the display backlight on or off for improved visibility in various lighting conditions.

Image: The backlit display function, showing the clarity in dim conditions.

6. Measurement Modes

6.1 Peak Mode

• Press the PEAK button to enter Peak Mode. In this mode, the meter will display and hold the maximum magnetic field value detected during the measurement period.

6.2 Real Mode

• Press the PEAK button again to exit Peak Mode and return to Real Mode, where the meter displays real-time magnetic field readings.

Image: Comparison of Peak Mode and Real Mode displays.

7. N/S Pole Detection

The GOYOJO Digital Gauss Meter GT129-B can automatically detect and display the polarity of a magnetic field. When the magnetic field passes the front of the Hall sensor, the screen displays "N" for North pole. When it passes the back, it displays "S" for South pole. This feature is crucial for applications requiring specific magnetic orientations.

Image: Visual explanation of N/S pole detection using the meter.

8. Applications

The GOYOJO Digital Gauss Meter GT129-B is versatile and can be used in various scenarios to accurately measure working magnetic fields, surface magnetic fields, residual magnetism, and leakage magnetism. Typical applications include:

• Guitar Pickups: Measuring magnetic field strength for audio equipment.
• Permanent Magnets: Inspecting the strength and polarity of various permanent magnets.
• Speakers: Analyzing magnetic fields in speaker components.
• Magnetic Separators: Checking the effectiveness of magnetic separation equipment.
• Demagnetizers: Verifying the demagnetization process.
• DC Motors: Assessing magnetic fields within DC motor assemblies.

Image: Examples of diverse applications for the digital gauss meter.

9. Specifications

The following table outlines the technical specifications for the GOYOJO Digital Gauss Meter GT129 series, with a focus on model GT129-B:

Image: Comprehensive specifications for the GT129 series.

10. Maintenance

• Cleaning: Use a soft, dry cloth to clean the meter's exterior. Do not use abrasive cleaners or solvents.
• Battery Replacement: When the low battery indicator appears on the display, replace the 9V battery promptly to ensure continued accurate operation.
• Probe Care: Handle the Hall probe with care. Avoid bending or subjecting it to excessive force, as this can damage the sensor. Keep the probe tip clean.
• Storage: Store the meter and probe in the provided storage case when not in use. Keep it in a dry environment, away from extreme temperatures and direct sunlight.

11. Troubleshooting

• No Display/Meter Not Turning On:
  • Check if the 9V battery is correctly installed and has sufficient charge. Replace if necessary.
  • Ensure the ON/OFF button is pressed firmly.
• Inaccurate Readings:
  • Perform a zero calibration by pressing the ZERO button in an area free of magnetic fields.
  • Ensure the Hall sensor is positioned perpendicular to the magnetic field being measured.
  • Check for any physical damage to the probe or its connection.
• Display Backlight Not Working:
  • Press the LIGHT button to toggle the backlight.
  • If the issue persists, the battery might be low.

12. Warranty Information

For detailed warranty information regarding your GOYOJO Digital Gauss Meter GT129-B, please refer to the warranty card included in your product packaging or visit the official GOYOJO website. Keep your purchase receipt as proof of purchase for any warranty claims.

13. Support Information

Should you require technical assistance, have questions about operation, or need service for your GOYOJO Digital Gauss Meter GT129-B, please contact GOYOJO customer support. Contact details can typically be found on the official GOYOJO website or in the documentation provided with your purchase.