1. Introduction
This manual provides essential instructions for the safe and effective operation of your VOLTCRAFT RM-400 Geiger Counter. The RM-400 is designed for detecting Alpha, Beta, Gamma, and X-ray radiation, featuring high measurement accuracy, an internal memory for 4000 readings, a large LCD display, and Bluetooth connectivity for data evaluation. Please read this manual thoroughly before using the device.
2. Safety Information
WARNING: To reduce the risk of injury, always read and understand the operator's manual before using this device.
- Ensure batteries are correctly installed before operation.
- Do not attempt to open or modify the device, as this may compromise its accuracy and safety features.
- Keep the device away from extreme temperatures, moisture, and strong magnetic fields.
- This device is for informational and detection purposes. It is not a substitute for professional radiation safety equipment or expert advice.
- Dispose of batteries and the device according to local regulations.
3. Product Overview
The VOLTCRAFT RM-400 is a handheld Geiger counter designed for comprehensive radiation detection.
Figure 3.1: Angled view of the VOLTCRAFT RM-400 Geiger Counter, highlighting the display and control buttons.
3.1 Device Components
- Geiger-Müller Tube: Located at the top, responsible for detecting radiation.
- LCD Display: Large screen for displaying measurement data, time, and settings.
- Control Buttons: For navigation, settings, saving data, and power.
- Battery Compartment: Located at the rear for 4x 1.5V AA batteries.
- Bluetooth Module: For wireless data transfer to evaluation software.
Figure 3.2: Front view of the RM-400, showing the layout of the control buttons: SETUP, SAVE, SV/h R/h, Power, GPS/CAL/ML, ESC, and navigation arrows.
Figure 3.3: Rear view of the RM-400, indicating the battery compartment and safety warnings, including the requirement for 4x 1.5V AA batteries.
4. Setup
4.1 Battery Installation
- Locate the battery compartment cover on the back of the device.
- Slide or unclip the cover to open it.
- Insert 4x 1.5V AA batteries, ensuring correct polarity (+/-) as indicated inside the compartment.
- Replace the battery compartment cover securely.
4.2 Initial Power-On
- Press and hold the Power button until the display illuminates.
- The device will perform a self-test and then display the current radiation level.
- Adjust date, time, and other settings via the SETUP menu if prompted or desired.
5. Operating Instructions
5.1 Taking Measurements
Once powered on, the RM-400 continuously monitors radiation levels.
- Real-time Display: The large LCD shows the current radiation dose rate (e.g., µSv/h).
- Radiation Types: The device detects Alpha, Beta, Gamma, and X-ray radiation. The specific detection mode or sensitivity may be adjustable in the SETUP menu.
- Acoustic Warning: The device emits an audible click for each detected radiation particle. An adjustable alarm threshold can be set to trigger a continuous warning sound when radiation levels exceed a predefined limit.
Figure 5.1: A user operating the RM-400 Geiger Counter, demonstrating its handheld use for radiation measurement in a controlled environment.
5.2 Data Logging and Storage
- The RM-400 has an internal memory capable of storing up to 4000 readings.
- Press the SAVE button to manually record the current measurement.
- Automatic logging intervals may be configured in the SETUP menu.
5.3 Bluetooth Connectivity
The device supports Bluetooth for transferring stored data to a computer or compatible mobile device for further analysis using the included evaluation software.
- Ensure Bluetooth is enabled on your RM-400 (check SETUP menu).
- Activate Bluetooth on your receiving device (computer/smartphone).
- Open the VOLTCRAFT evaluation software.
- Follow the software's instructions to pair with the RM-400 and download data.
6. Maintenance
6.1 Cleaning
- Wipe the device with a soft, dry cloth.
- Do not use abrasive cleaners or solvents.
- Ensure no liquids enter the device openings.
6.2 Storage
- Store the device in a cool, dry place away from direct sunlight.
- Remove batteries if the device will not be used for an extended period to prevent leakage.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low or dead batteries; incorrect battery installation. | Replace batteries; check battery polarity. |
| Inaccurate readings. | Interference from other electronic devices; device malfunction. | Move away from potential interference sources; contact support if problem persists. |
| Bluetooth connection fails. | Bluetooth not enabled on device or receiving unit; out of range. | Ensure Bluetooth is active on both devices; move closer; restart devices. |
| No acoustic warning. | Acoustic warning disabled; volume too low; alarm threshold not met. | Check settings in SETUP menu; adjust volume; verify radiation levels exceed threshold. |
8. Specifications
| Model Name | VOLTCRAFT RM-400 Geiger Counter |
| Item Model Number | VC-12822170 |
| Radiation Detection | Alpha, Beta, Gamma, X-rays |
| Internal Memory | 4000 readings |
| Display | Large LCD |
| Connectivity | Bluetooth |
| Power Source | 4x 1.5V AA Batteries |
| Product Dimensions | 14 x 18 x 31 cm |
| Item Weight | 226 Grams |
| Included Components | Butter Paper (Note: This might be a translation error or packaging material. Refer to product packaging for exact contents.) |
| Specific Uses | Radiation measurement, radiation detection, research, industrial, educational purposes |
9. Warranty and Support
For warranty information, technical support, or service inquiries, please refer to the documentation included with your product or visit the official VOLTCRAFT website. Keep your purchase receipt as proof of purchase.
