1. Sarrera
The Voltcraft Gamma-Check-A is a portable Geiger counter designed for the quick and easy detection of radioactive radiation. This instrument allows users to measure radiation dose in microsieverts per hour (µSv/h) and assess the risk of radioactive contamination in various materials, including food. Its compact design and user-friendly interface make it suitable for both personal and professional use.
Please read this manual thoroughly before operating the device to ensure safe and correct usage.
2. Segurtasun-argibideak
- Always handle the device with care. Avoid dropping or subjecting it to strong impacts.
- Ez saiatu gailua irekitzen edo aldatzen. Konponketak langile kualifikatuek bakarrik egin behar dituzte.
- Mantendu gailua muturreko tenperatura, hezetasun eta eguzki-argitik urrun.
- Ensure proper battery installation and disposal according to local regulations.
- This device is an indicator of radiation levels and should not be used as a substitute for professional radiation safety equipment or procedures in critical environments.
3. Paketearen edukia
Please check the contents of your package upon receipt. It should include:
- Voltcraft Gamma-Check-A Geiger Counter
- 9V Lithium Battery (if included in package)
- Argibide eskuliburua
Elementuren bat falta bada edo hondatuta badago, jarri harremanetan zure hornitzailearekin berehala.
4. Gailua amaitu daview
Familiarize yourself with the components of your Gamma-Check-A device:

1. irudia: Aurrealdea view of the Voltcraft Gamma-Check-A Geiger Counter, showing the display, control buttons (Up, Menu, Down, OK), and the "GAMMA CHECK" label.
- Pantaila: Shows current radiation dose, messages, and battery status.
- Gora botoia (▲): Navigates up in menus or increases values.
- Menuko botoia: Accesses the device's settings and functions.
- Behera botoia (▼): Navigates down in menus or decreases values.
- OK Button (●): Confirms selections or powers the device on/off.

2. irudia: The Voltcraft Gamma-Check-A Geiger Counter held in a user's hand, demonstrating its ergonomic design and portable size for easy operation.
5. Konfigurazioa
5.1 Bateriaren instalazioa
- Bilatu bateriaren konpartimentuaren estalkia gailuaren atzealdean.
- Open the battery compartment by sliding or unscrewing the cover.
- Insert a new 9V Lithium battery, ensuring the correct polarity (+/-) as indicated inside the compartment.
- Itxi bateriaren konpartimenduaren estalkia ondo.
Oharra: Use only 9V Lithium batteries for optimal performance and longevity. Remove the battery if the device will not be used for an extended period.
6. Funtzionamendu-argibideak
6.1 Piztu/Itzali
- Pizteko: Eduki sakatuta OK button for approximately 2 seconds. The display will light up, and the device will begin its self-test.
- Itzaltzeko: Eduki sakatuta OK button for approximately 2 seconds until the display turns off.
6.2 Neurketa bat egitea
Once powered on, the device automatically starts measuring radiation levels. The current radiation dose rate will be displayed in µSv/h on the main screen.
- Position the device near the object or area you wish to measure.
- Allow a few seconds for the reading to stabilize. The device detects radiation in a short time.
- The display will show the real-time radiation dose.
6.3 Adjustable Alarm
The Gamma-Check-A features an adjustable alarm to alert you when radiation levels exceed a set threshold.
- Sakatu Menua botoia ezarpenen menuan sartzeko.
- Erabili Up (▲) eta Behera (▼) buttons to navigate to the "Alarm Threshold" option.
- Sakatu OK hautatzeko.
- Erabili Up (▲) eta Behera (▼) buttons to adjust the desired alarm level.
- Sakatu OK ezarpena berresteko.
- Exit the menu by pressing the Menua button repeatedly until you return to the main screen.
Oharra: When the radiation level exceeds the set threshold, the device will emit an audible alarm and/or visual alert.
6.4 Acoustic Decay Indicator
The device provides an acoustic indicator for radiation decay events, allowing for real-time auditory feedback on detected radiation particles.
- This feature is typically active by default. Refer to the menu settings to enable or disable it if desired.
- Each click or beep indicates a detected radiation event. The frequency of clicks corresponds to the intensity of radiation.
7. Mantentzea
- Garbiketa: Garbitu gailua zapi leun eta lehor batekin. Ez erabili garbitzaile edo disolbatzaile urratzailerik.
- Biltegiratzea: Store the device in a cool, dry place when not in use. Remove the battery if storing for extended periods.
- Bateria ordezkatzea: Replace the 9V Lithium battery when the low battery indicator appears on the display.
8. Arazoak
| Arazoa | Kausa posiblea | Irtenbidea |
|---|---|---|
| Gailua ez da pizten. | Bateria agortuta dago edo gaizki instalatuta dago. | Check battery polarity. Replace with a new 9V Lithium battery. |
| Irakurketa zehaztugabeak edo gorabeheratsuak. | Interference from other electronic devices; device not stable. | Move away from potential sources of electromagnetic interference. Ensure the device is held steadily. |
| Alarma ustekabean jotzen du. | High radiation level detected; alarm threshold set too low. | Verify the environment for radiation sources. Adjust the alarm threshold in the menu if necessary. |
| Pantaila hutsik edo irakurgaitza da. | Bateria baxua; tenperatura altua. | Replace battery. Move device to a suitable operating temperature. |
9. Zehaztapenak
| Modelo zenbakia | Gamma-Check-A |
| Fabrikatzailea | VOLTCRAFT |
| Zati zenbakia | 1034097 |
| Radiation Measurement Range | 0.01 – 999.9 µSv/h |
| Zehaztasuna | ± % 10 |
| Energia iturria | 9V litiozko bateria |
| Produktuaren neurriak (L x W x H) | Gutxi gorabehera. 180 x 86 x 45 mm |
| Pisua | Gutxi gorabehera. 160 g |
| Kolorea | Grisa |
| Erabilera gomendatua | Radiation Detection |
10. Bermea eta Laguntza
VOLTCRAFT products are manufactured to high-quality standards. For information regarding warranty terms, technical support, or service, please refer to the warranty card included with your purchase or visit the official VOLTCRAFT webgunea.
For further assistance, please contact VOLTCRAFT customer service with your product model number (Gamma-Check-A) and purchase details.





