1. Introduction
The GQ GMC-800 is a portable nuclear radiation detector designed for personal and group use. It accurately detects Beta, Gamma, and X-ray ionizing radiation. This device offers quick, sensitive, and precise readings with an intuitive user interface. This manual provides essential information to operate and maintain your device effectively.
2. Safety Information
- Read all instructions before operating the device.
- Do not attempt to open or modify the device, as this may void the warranty and pose safety risks.
- Keep the device away from extreme temperatures, direct sunlight, and moisture.
- Use only the specified charging cable and power adapter.
- Dispose of batteries according to local regulations.
3. Package Contents
Verify that all items are present in your package:
- Main Unit
- Type-C Cable
- Quick Guide
- Safety Card
4. Product Overview
The GQ GMC-800 features a robust design and a user-friendly interface for effective radiation detection.
Figure 4.1: Front view of the GQ GMC-800 detector, displaying the main screen with radiation readings and control buttons.
Key Features:
- Nuclear Radiation Detection: Detects Beta, Gamma, and X-ray ionizing radiation.
- Multi-functional Operation: Includes traditional Geiger counter, real-time measurement, dosimeter, and radiation monitoring functions.
- High Accuracy: Designed to comply with USA National Standards (NIST & NRC) with calibration for enhanced precision.
- Five Types of Alarms: Visual LED, Audio, Vibration, Voice, and Color Bar indication. Alarm thresholds are user-adjustable.
- User-Friendly Interface: Large, clear color TFT LCD screen, readable under sunlight. User-selectable color schemes and light/dark modes.
- Data Handling: Built-in clock and internal memory for up to 10 years of data storage. Free data processing software, firmware updates, and online data storage.
- Ergonomic Design: Lightweight, thin, anti-drop design. Handheld, portable, and can stand upright or lie flat. Features a rechargeable and replaceable battery with Type-C charging and data transfer.
Figure 4.2: Illustration of the multi-functional capabilities of the GMC-800, including dose rate, dosimeter, graphic display, and history views.
5. Setup
5.1 Charging the Device
The device comes with a rechargeable Lithium-ion battery. Before first use, fully charge the device.
- Locate the Type-C port on the side of the device.
- Connect the provided Type-C cable to the device and a compatible USB power source (e.g., computer, wall adapter).
- The battery indicator on the screen will show charging status. A full charge typically takes a few hours.
Figure 5.1: The device connected via Type-C cable for charging and data transfer.
5.2 Powering On/Off
- To power on, press and hold the power button (usually marked with a circle and vertical line) until the screen illuminates.
- To power off, press and hold the power button until the device shuts down.
6. Operating Instructions
The GMC-800 offers various modes for radiation detection and monitoring.
6.1 Navigating the Interface
The device features a large color LCD and intuitive buttons for navigation. A shortcut button allows quick switching between four main function screens.
Figure 6.1: The user interface with options for color schemes and display modes.
6.2 Measurement Modes
- Traditional Geiger Counter: Displays instantaneous radiation flux.
- Real-time and Time-defined Measurement: Shows radiation data over specific periods.
- Dosimeter Function: Provides real-time and accumulated radiation exposure on the human body.
- Radiation Monitoring: Monitors radiation levels over time in a specific location.
Figure 6.2: Different measurement modes available on the GMC-800.
6.3 Alarm Functions
The device features five types of radiation alarms, designed for all users, including those with visual or hearing impairments.
- Visual LED: A flashing light indicator.
- Audio: An audible alert sound.
- Vibration: The device vibrates.
- Voice: A spoken alert.
- Color Bar Indication: A visual color bar on the display changes to indicate radiation levels.
The alarm threshold can be adjusted by the user through the device's menu settings.
Figure 6.3: Overview of the five alarm types for radiation detection.
7. Data Handling and Advanced Features
The GMC-800 includes advanced features for data management and device updates.
- Internal Memory: Built-in clock and internal memory allow for data storage for up to 10 years.
- Data Processing Software: Free software is available for further data processing and analysis on a PC.
- Firmware Updates: The device supports firmware updates to ensure optimal performance and access to new features.
- Online Data Storage: Free online data storage and history overview are available.
- Open Communication Protocol: Provides flexibility for advanced users.
Figure 7.1: Data handling and advanced features of the GMC-800.
Figure 7.2: Example of the GMCMap application for monitoring and analyzing data.
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use abrasive cleaners or solvents.
- Storage: Store the device in a cool, dry place when not in use.
- Battery Replacement: The battery is rechargeable and replaceable. Refer to the full user manual for detailed instructions on battery replacement if needed.
- Firmware Updates: Regularly check for and install firmware updates to ensure optimal performance and access to the latest features.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or depleted battery. | Charge the device using the provided Type-C cable. |
| Inaccurate readings. | Device not calibrated or environmental interference. | Ensure the device is used in a stable environment. If issues persist, consult the full manual for calibration procedures or contact support. |
| Screen is dim or unreadable. | Brightness settings or direct sunlight. | Adjust screen brightness in settings. Move to a shaded area if in direct sunlight. |
| Alarms not functioning. | Alarm settings are off or threshold is too high. | Check alarm settings in the menu and adjust the threshold as needed. |
10. Specifications
| Feature | Detail |
|---|---|
| Model Number | GMC-800 |
| Manufacturer | GQ Electronics LLC |
| Country of Origin | United States |
| Dimensions (L x W x H) | 6.99 x 12.5 x 1.5 cm |
| Weight | 67 grams |
| Battery | 1 Lithium-ion (included, rechargeable, replaceable) |
| Language | English |
| Radiation Detection | Beta, Gamma, X-ray |
| Data Storage | Up to 10 years internal memory |
11. Warranty and Support
For warranty information and technical support, please refer to the official GQ Electronics website or contact their customer service directly. Details regarding specific warranty periods and support channels are typically provided with your purchase documentation or on the manufacturer's website.
GQ Electronics is committed to providing quality products and customer satisfaction. For further assistance, please visit gqelectronicsllc.com.