1. Introduction
The Fnirsi GC-01 is a portable nuclear radiation detector designed for measuring ionizing radiation, specifically X-rays, gamma rays, and beta particles. It utilizes a Geiger-Miller counter tube to detect radiation intensity. This device is suitable for various environments and applications, providing real-time monitoring and cumulative dose tracking. This manual provides essential information for the safe and effective operation of your GC-01 detector.
2. Safety Information
Please read all safety instructions before operating the device. Improper use may lead to inaccurate readings or personal injury.
2.1 General Precautions
- Do not attempt to open or modify the device.
- Keep the device away from extreme temperatures, moisture, and strong magnetic fields.
- Use only the specified charging cable and power source.
- This device is for informational purposes and should not be used as the sole basis for critical safety decisions without professional consultation.
2.2 Understanding Radiation Dose Hazards
It is important to understand the potential effects of different radiation doses on the human body. The following table provides a general overview:
Figure 2.1: Nuclear Radiation Dose Hazards and Human Body Response. This table illustrates the potential health effects associated with various levels of radiation exposure, from delayed reactions at low doses to acute death at very high doses.
| Dose (Rum) | Response |
|---|---|
| 5-20 | Possible delayed reaction; potential chromosome damage. |
| 20-100 | Temporary Leukopenia (reduction in white blood cells). |
| 100-200 | Mild radiation sickness within hours: vomiting, diarrhea, fatigue, reduced resistance to infection. |
| 200-300 | Severe radiation sickness reaction; symptoms similar to above. This exposure is a lethal dose; 10-30% of those who die will have an LD(10-35)/30. |
| 300-400 | Severe radiation sickness; damage to bones and gut. LD(50-70)/30. |
| 400-1K | Acute, premature death. LD(60-95)/30. |
| 1K-5K | Acute death within days. LD 100/10. |
3. Package Contents
Upon opening the package, please verify that all items are present and in good condition:
- Fnirsi GC-01 Nuclear Radiation Detector
- USB-C to USB-A Charging Cable
- User Manual (this document)
Figure 3.1: Contents of the Fnirsi GC-01 package, including the detector, USB charging cable, and user manual.
4. Device Overview and Features
The Fnirsi GC-01 detector features a high-definition LCD display and intuitive controls. Key features include:
- Detection of X-rays, gamma rays, and beta particles.
- High sensitivity for various environments.
- Data retention during power off.
- High-definition LCD display for clear status indication.
- Three combined alarm modes: Light, Vibration, and Sound.
- Real-time clock display.
- Preset alarm thresholds for dose rate and cumulative dose.
Figure 4.1: Overview of Fnirsi GC-01 key features, highlighting its three alarm modes (sound, glitter, vibrate), Geiger counter meter, 1100mAh battery, and detection capabilities for industrial, food/metal, ceramic tile/marble, and β, Y, X-ray with trend graph.
5. Setup
5.1 Charging the Device
Before first use, fully charge the device. Connect the provided USB-C cable to the detector's charging port and the USB-A end to a 5V power adapter (not included) or a computer's USB port. The charging indicator on the screen will show the charging status.
5.2 Powering On/Off
- To Power On: Press and hold the power button (usually the 'OK' button) until the screen illuminates.
- To Power Off: Press and hold the power button until the device shuts down.
5.3 Initial Settings
Upon first power-on or after a reset, you may need to set the language and real-time clock.
- Language Selection: Navigate through the menu using the arrow buttons and select 'English' for the interface language.
- Time Setting: Access the system settings to adjust the real-time clock to your local time.
6. Operation
6.1 Basic Measurement
Once powered on, the device will automatically begin measuring radiation levels. The main display shows the current dose rate in microSieverts per hour (uSv/h).
6.2 Understanding the Display
The high-definition LCD provides comprehensive information:
- Current Dose Rate: Displays the real-time radiation intensity (e.g., 000.00 uSv/h).
- Cumulative Dose: Shows the total accumulated radiation dose over time (e.g., 00.00 mSv).
- Average Dose Rate: The average radiation intensity over a measurement period.
- Maximum Dose Rate: The highest radiation intensity recorded during the current session.
- Real-time Clock: Displays the current date and time.
6.3 Setting Alarm Values
The device allows you to set custom alarm thresholds for both current dose rate and cumulative dose. An alarm will activate if the measured values exceed these presets.
Figure 6.1: The Fnirsi GC-01 interface for setting alarm values. Users can configure thresholds for current alarm (dose rate) and cumulative alarm, with three distinct alarm modes (sound, glitter, vibrate) available.
- Navigate to the 'Set Alarm' option in the menu.
- Use the arrow buttons to adjust the desired dose rate alarm threshold (e.g., Current Alarm 001.00 uSv/h).
- Adjust the cumulative dose alarm threshold (e.g., Cumulative Alarm 020.00 mSv).
- Confirm your settings.
6.4 Alarm Modes
You can choose from three distinct alarm modes:
- Sound: An audible alert.
- Vibration: The device vibrates.
- Light: A visual indicator (e.g., flashing screen or LED).
These modes can be combined or used individually based on user preference and environment.
6.5 Data Saving
The device automatically saves measurement data during shutdown, ensuring that cumulative dose information and settings are retained.
7. Maintenance
7.1 Cleaning
Wipe the device with a soft, dry cloth. Do not use abrasive cleaners or solvents, as these can damage the casing or screen.
7.2 Battery Care
To prolong battery life, avoid fully discharging the device frequently. If storing for an extended period, charge the battery to approximately 50% and recharge every few months.
8. Troubleshooting
If you encounter issues with your Fnirsi GC-01, refer to the following common problems and solutions:
- Device does not power on: Ensure the battery is charged. Connect to a power source and try again.
- Inaccurate readings: Ensure the device is not near strong electromagnetic interference. Calibrate if necessary (refer to advanced settings, if available, or contact support).
- Screen is blank or frozen: Try a soft reset by holding the power button for an extended period (e.g., 10-15 seconds) until it restarts.
- Alarm not sounding/vibrating: Check alarm settings to ensure the desired mode is enabled and volume/intensity is set appropriately.
For persistent issues, please contact customer support.
9. Specifications
The Fnirsi GC-01 Nuclear Radiation Detector features an Energy Compensation GM Tube for precise measurements.
Figure 9.1: Comparison of GM Geiger Counter Tube Radiation Measurement with Higher Precision. This chart highlights the superior measuring range, lower basic error, and faster response time of the GC-01 Nuclear Radiation Detector's GM tube compared to an ordinary counter tube, along with its ability to measure X, Y, and hard β rays.
| Parameter | Value |
|---|---|
| Types of detection rays | γ rays, x rays, β rays |
| Detector | Energy Compensation GM Tube (Geiger Tech no logy tube) |
| Dose equivalent rate | 0.00-100000μSv/h (10mSv/h) |
| Cumulative dose equivalent | 0.00μSv-500.0mSv |
| Energy range | 48keV-1.5MeV^ ±30% (for 137CS~) |
| Language | Chinese/English switch |
| Sensitivity | 80CPM/pSv (For Co-60) |
| Dosage unit | nSv/h, pSv/h, mR/h, cps, cpm Switch |
| Power supply | 1100mAh lithium battery |
| Alarm method | Light, vibration, sound |
| Size | 120x78x27mm |
| Product Dimensions (L x W x H) | 20 x 10 x 15 cm |
| Product Weight | 1 kilogram |
| Model Number | YH-B-FNIRSI GC-01 |
| Country of Origin | China |
Figure 9.2: Detailed product parameters for the Fnirsi GC-01 Nuclear Radiation Detector, including detection types, detector type, dose equivalent rates, energy range, language options, sensitivity, dosage units, power supply, alarm methods, and physical dimensions.
10. Warranty and Support
The manufacturer provides spare parts availability for 1 year from the date of purchase. For warranty claims, technical support, or further assistance, please contact your retailer or the manufacturer directly. Keep your proof of purchase for warranty validation.
