FNIRSI GC-02 Nuclear Radiation Detector

Notice to Users

This manual provides detailed introductions to the product. Please read this manual carefully to ensure optimal product performance.

Please keep this manual properly.

• Do not use the instrument in flammable or explosive environments.
• Waste batteries and instruments cannot be disposed of with household waste. Please dispose of them in accordance with applicable national or local laws and regulations.
• If there are any quality issues with the device or if you have questions about its use, please contact FNIRSI online customer service.

1. Product Introduction

The FNIRSI GC-02 is a newly launched nuclear radiation detector by FNIRSI, featuring an exquisite exterior design, compact size, and strong portability. It utilizes high-precision Geiger Miller counters to accurately detect ionizing radiation (e.g., gamma rays, X-rays). The device is equipped with a 1.5-inch IPS high-definition LCD screen with a clean and clear interface, allowing for easy viewing of real-time, average, maximum, and cumulative values. It supports alarm value settings, customizable sleep and shutdown times, and switching between 8 languages. The detector also features a timed monitoring mode and history view, capable of recording up to 10 sets of data without loss. It is powered by a built-in 850mAh rechargeable lithium battery, offering up to 6 hours of battery life. The FNIRSI GC-02 is an ideal tool for detecting nuclear radiation anytime, anywhere, providing a sense of calm, accuracy, and convenience.

2. Product Features

• Detects gamma (γ) and beta (β) radiation, as well as X-rays.
• High sensitivity and suitable for diverse working environments.
• User-friendly interface available in eight languages: Chinese, English, Russian, German, Japanese, Portuguese, Spanish, and Korean.
• Supports periodic monitoring.
• Saves power-down data.
• Offers two combined alarm methods: light and sound.
• Allows setting of current and cumulative alarm values.

3. Product Parameters

4. Buttons & Functions Introduction

The device features several buttons for operation:

• Down key: Short press the left key and long press to return.
• Up key: Short press the right key and long press for settings.
• OK key: Short press to select, long press for on/off.

(Diagram illustrating button layout is described textually here) The device has directional buttons (up, down, left, right) and an OK button. The down button is used for navigation and returning. The up button is for navigation and accessing settings. The OK button is used for selection and power on/off.

5. Panel Introduction

5.1 ON/OFF

Turn the device on and off by long-pressing the OK button.

5.2 Panel Introduction

General Page

This page displays real-time dose measurements and monitors cumulative results, alarm thresholds, and device status. Upon activation, it automatically enters this page to detect parameters.

The display shows:

• 00:00:00: Equipment startup and operation time.
• 043.00 uSv/h: Current measurement rate (real value).
• 220.00 mSv/h: Cumulative measurement value.
• 080.00 uSv/h: Current alarm value.
• 440.00 mSv/h: Cumulative alarm value.

Curve Record Page

This page is useful for observing the dynamic curve of ambient radiation dose, analyzing average and maximum values. Press the left and right buttons to switch to the curve recording mode.

The display shows:

• 00:09:24: Current real-time measurement rate.
• Waveform graph: Real-time waveform detection.
• 000.10 uSv/h, 000.18 mSv/h: Average and maximum values.

Timed Monitoring Page

This page allows setting a start and end time for automatic monitoring of ambient radiation levels without manual observation. After monitoring, data is saved to the history page. Press the left and right buttons to switch to monitoring mode.

The display shows:

• 00:00:00: Equipment startup and operation time.
• M1 00:00:00 uSv/h: Current measurement rate (real value).
• Monitoring mode running time.
• Start, Average, End times.

The monitoring mode can record measurement values within a specified time range. Long press the 'down' button to set the start time, and long press the 'up' button to set the end time.

History Records Page

This page displays previously recorded radiation levels, facilitating historical data analysis. It can store up to 10 groups of data. Press the left and right buttons to switch to the history view.

The display shows:

• 000.18 uSv/h: Current real-time measurement rate.
• History Number (M1, M2, M3...).
• Monitoring mode running time.
• CUM, AVC, MAX values for each historical record.

The first historical record is the latest, with cumulative, average, maximum values, and running time dynamically updated.

5.3 Settings

Long press the settings button to enter the settings menu. Long press the return button to go back to the monitoring page. Use the left and right keys to switch between setting options. Press OK to enter lower-level menus and long press return to exit.

5.3.1 Setting of Indicator Light Alarm and Buzzer Alarm

Switch to the indicator light alarm and press OK to enter the sub-menu. Use up/down keys to select options and press OK to confirm. Switch to buzzer alarm settings using left/right keys and use up/down keys to adjust the sound level.

5.3.2 Current Dose Alarm Value, Cumulative Dose Alarm Value, and Unit Settings

Switch to the current dose alarm value and press OK to enter the sub-menu. Use left/right keys to switch to cumulative dose alarm value and unit settings. Press OK to set alarm values. Select the appropriate unit using the up/down keys and press OK.

The device allows setting:

• Current Dose Alarm Value (e.g., 080.00 uSv/h)
• Cumulative Dose Alarm Value (e.g., 400.00 mSv/h)
• Unit Setting (μSv/h, μGy/h, mR/h, CPS, CPM)

5.3.3 Hibernation Settings, Automatic Shutdown

Switch to automatic shutdown settings. Use up/down keys to select 'ON' or 'OFF' and press OK to confirm. Press OK under 'ON' to set the sleep time or automatic shutdown time using the up/down keys.

• Sleep Settings: Set hibernation time (e.g., 45 min).
• Auto Shutdown: Set automatic shutdown time (e.g., 60 min).

5.3.4 Language, Backlight, Restore Factory Settings, About

Switch to backlight, factory settings, and about sections.

• Language Setting: Use up/down keys to select the language and press OK. Available languages include Simplified Chinese, English, Japanese, Portuguese, Russian, Spanish, Korean, and German.
• Backlight: Adjust backlight brightness using the up/down keys.
• Restore Factory Settings: Confirm the reset using up/down keys and press OK to restore factory settings.
• About: Displays device model, version number, and other information.

6. Conversion of Radioactive Units

① International Standards (1990)

• Radioactive workers: 20 mSv/year (10 μ Sv/h)
• General public personnel: 1 mSv/year (0.52 μ Sv/h)

② Unit Conversion

• 1μSv/h = 100μR/h
• 1nc/kg.h = 4μR/h
• 1μR = 1γ (unit used in the pronuclear industry)

Radioactivity

• 1Ci = 1000mCi
• 1mCi = 1000μCi
• 1Ci = 3.7 × 10^10 Bq = 37GBq
• 1mCi = 3.7 × 10^7 Bq = 37MBq
• 1μCi = 3.7 × 10^4 Bq = 37KBq
• 1Bq = 2.703 × 10^-11 Ci = 27.03pCi

Exposure

• 1R = 103mR = 106μR
• 1R = 2.58 × 10^-4 c/kg

Absorption Metering

• 1Gy = 103mGy = 106μGy
• 1Gy = 100rad
• 100μrad = 1μGy

Measurement Equivalent

• 1Sv = 103mSv = 106μSv
• 1Sv = 100rem = 100μrem = 1μSv

Other

• 1Sv is equivalent to 1Gy
• 1g radium ≈ 0.97Ci ≈ 1Ci

Radon Unit

• 1Bq/L = 0.27em = 0.27 × 10^-10 Ci/L

③ Calculation of Radioisotope Decay Values

Formula: A = A0e^(-λt), where t = T1/2

A0: Calculate the time elapsed since the known source A was discovered, using the radioactive decay calculation table.

④ The Relationship Between Radiation Source and Distance

The intensity of a radioactive source is inversely proportional to the square of the distance.

X=А r/ R2A: Radioactivity of a point source; R: Distance from the source; r: Exposure rate constant.

Note:

• Ra-226 (t 1608): r = 0.825 lun. m2/hr. curie
• Cs 137 (t 29.9 years): r = 0.33 lun. m2/hr. curie
• Co 60 (t 5.23 years): r = 1.32 lun. m2/hr. curie

Calculate radioactive shielding based on the radioactive decay calculation table:

7. Note

Nuclear radiation detectors are precision instruments. Please pay attention to protection. The following suggestions will be beneficial for instrument maintenance and extended service life.

8. Product Maintenance

• Please keep the instrument dry and clean dirt from its surface with a soft cloth before use. Do not use cleaning agents or solvents.
• Please recycle and utilize damaged instruments, accessories, and packaging materials in a manner that meets environmental requirements.
• Please turn off the device promptly when not in use for a long time.
• Do not disassemble or replace components without permission to avoid malfunctions.
• Please store in a dry place when not in use.

Important Usage Notes:

• During storage and use, try to keep the instrument dry and avoid excessive humidity, which can cause malfunctions and damage.
• Do not use the instrument roughly to prevent falling or knocking, as this may cause damage.
• When the battery level is displayed low, charge it promptly. Severe undervoltage may lead to abnormal phenomena like inability to switch on/off or screen failure.
• If the instrument does not function properly, contact the company's after-sales service or return it for repair.

9. Contact Us

For any questions, FNIRSI users can contact us for a satisfactory solution and an extra 6-month warranty as a thank you for your support. We have also created an interesting community; you are welcome to join.

Shenzhen FNIRSI Technology Co., LTD.

Address: West of Building C, Weida Industrial Park, Dalang Street, Longhua District, Shenzhen, Guangdong

E-mail: fnirsiofficial@gmail.com (Business) / fnirsiofficialcs@gmail.com (Equipment service)

Tel: 0755-28020752 / +8613536884686

Web: www.fnirsi.cn

Distributor:

Sunnysoft s.r.o.
Kovanecká 2390/1a
190 00 Prague 9
Czech Republic
www.sunnysoft.cz

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