1. Introducció
The ATO GD200-N2 is a portable nitrogen (N2) gas detector designed for accurate and reliable leak detection. It features a built-in micro-pump and a high-accuracy sensor, ensuring fast response times. This device is equipped with a digital LCD display, providing clear readings of gas type, unit, concentration, and local time. It also includes sound, light, and vibrating alarms with settable alarm points for enhanced safety. The detector is compact, lightweight, and housed in a durable casing, making it suitable for various applications.
2. Característiques clau
- High Accuracy Sensor: Equipped with a built-in micro-pump and high-accuracy sensor for precise N2 gas detection.
- Pantalla LCD digital: Clear dot matrix display shows gas type, unit, concentration, and local time. Gas units can be switched between PPM and mg/m3.
- Alarmes múltiples: Features sound, light, and vibrating alarms with user-settable alarm points.
- Bateria recarregable: Powered by a large-capacity rechargeable lithium polymer battery.
- Disseny durador: Compact, lightweight, and housed in a robust casing for easy portability and longevity.
- Fàcil d'utilitzar: One-key factory reset, self-calibration, and zero calibration functions ensure accurate and reliable detection.
- Aplicació àmplia: Ideal for N2 concentration detection in electronic component storage, nitrogen tank areas, food packaging, nitrogen cylinder and tank purity measurement, and laboratories.
3. Contingut del paquet
Upon unboxing, verify that all items are present and in good condition:
- ATO GD200-N2 Portable Nitrogen Gas Detector
- Aluminum Alloy Carrying Case
- Cable de càrrega USB
- Power Adapter (Type-A, Type-C, Type-G, or Type-I depending on region)
- Filter for dust and water vapor
- Manual d'instruccions
- Test Certificate / Quality Inspection Report

Image: The ATO Portable Nitrogen Gas Detector shown next to its protective carrying case.
4. Producte acabatview
The ATO GD200-N2 features a robust design with clearly labeled buttons and a bright LCD display for easy interaction.

Image: Diagram of the ATO Portable Nitrogen Gas Detector with numbered components and their labels.
Controls i visualització:
- Botó ON/OFF: Located in the center, used to power the device on or off.
- Botó MENÚ: Accesses the main menu and navigates through options.
- ESC (Escape) Button: Exits current menu or setting.
- Botons de fletxa (< / >): Used for navigation and adjusting values.
- Pantalla LCD: Shows gas concentration, battery level, time, and other operational information.
5. Configuració
Initial Power On and Warm-up:
- Ensure the device is in an area with fresh ventilation.
- Manteniu premut el botó ON/OFF button in the center for 3 seconds to power on the device.
- The device will display a startup sequence and then initiate a 60-second warm-up period. This ensures the sensors are fully activated for accurate readings.
- Once the warm-up is complete, the device enters measure mode, and information will be displayed on the screen.
Configuració bàsica:
Adjust alarm points, language, pump speed, and time settings as needed.
Video: This video demonstrates how to adjust basic settings such as alarm points, language, and time on the ATO portable gas detector.
Configuració d'alarma:
- From the main menu, navigate to 'ALARM' and press OK.
- Select the channel (CHAN) and press OK. Use the arrow keys to change the channel. Press OK de nou.
- Navigate to 'LOW' alarm and press OK. Use the arrow keys to adjust the low alarm value. Press OK de nou.
- Navigate to 'HIGH' alarm and press OK. Use the arrow keys to adjust the high alarm value. Press OK de nou.
- Premeu ESC per tornar al menú principal.
Configuració d'idioma:
- From the main menu, navigate to 'SET' and press OK.
- Select 'LANG' (Language) and press OK. Use the arrow keys to select your preferred language (e.g., English, Chinese). Press OK de nou.
- Premeu ESC per tornar al menú principal.
Pump Speed Settings:
- From the main menu, navigate to 'SET' and press OK.
- Navigate to 'PUMP' and press OK. Use the arrow keys to adjust the pump speed (11 settings available). Higher speed results in greater vibration. Press OK de nou.
- Premeu ESC per tornar al menú principal.
Configuració de l'hora:
- From the main menu, navigate to 'CLK' (Clock) and press OK.
- Select 'TIME' and press OK. Use the arrow keys to adjust the time. Press OK de nou.
- Select 'DATE' and press OK. Use the arrow keys to adjust the date. Press OK de nou.
- Premeu ESC per tornar al menú principal.
6. Funcionament
Once the device has completed its warm-up and basic settings are configured, it is ready for gas detection. The device will continuously monitor N2 gas concentration in the range of 0 to 100% Vol. The digital LCD display will show real-time readings.

Image: A hand holding the ATO Portable Nitrogen Gas Detector in an industrial environment.
Indicació d'alarma:
If the N2 gas concentration exceeds the set low or high alarm points, the device will activate its audible, visual (light), and vibrating alarms to alert the user.
7. Calibració
Regular calibration is crucial for maintaining the accuracy and reliability of the gas detector. Calibration should be performed by qualified professionals using necessary accessories and standard gas. Typically, calibration should be done yearly.
Video: This video demonstrates the calibration process for the portable gas detector.
Calibratge zero:
Zero calibration is performed when the drifting is too large after the reading is stable, or if an alarm occurs unexpectedly. This ensures the device reads zero in a clean air environment.
Span Calibration (Target Point Calibration):
Span calibration involves applying a standard gas of a specific known concentration to the sensor without atmospheric dilution. The calibration result should match the concentration of the standard gas.
Procediment de calibratge:
- Connect the standard gas to the detector.
- Premeu MENÚ and navigate to 'Calibrate span'. Press OK.
- Enter the password (default is 2020). Use arrow keys to change digits and OK to confirm each digit.
- Set the value to match the standard gas concentration (e.g., 502.0). Use arrow keys to adjust and OK per confirmar.
- The device will indicate successful calibration.
8. Emmagatzematge de dades
The device has a memory function to retrieve history data and map out trends of gas density. It also features a USB port for high-speed data transmission to a computer for easier analysis.
Video: This video provides instructions on parameter settings, including data storage functions.
Configuració d'emmagatzematge:
- From the main menu, navigate to 'Storage set'.
- You can enable or disable the storage function by using the arrow keys and confirming with OK. Note that the storage function is OFF by default every time the device is turned on.
- Adjust the storage interval (e.g., 5 seconds) using the arrow keys and confirming with OK.
Viewing History Data:
- From the 'Storage set' menu, navigate to 'View history'.
- The display will show records with data coding, date, time, and gas concentration.
- Use the arrow keys to review different records.
Erasing History Data:
- From the 'Storage set' menu, navigate to 'Erase ex_flash'.
- Enter the password (default is 9999).
- Confirm the action. The device will beep and display 'erasing', then return to measure mode once complete.
9. Càrrega
The device is powered by a rechargeable lithium polymer battery. When the battery level is low, the device will indicate this on the display.
- Insert the charging cable into the USB port on the device.
- Connecteu l'adaptador de corrent a una presa de corrent adequada.
- The device display will show the recharging status.
10. Manteniment
- Neteja: Netegeu regularment l'exterior del dispositiu amb un damp tela. No utilitzeu netejadors abrasius ni dissolvents.
- Filtre: Ensure the filter is clean and free from dust and water vapor to maintain optimal performance. Replace if damaged or excessively dirty.
- Emmagatzematge: Store the device in its protective aluminum alloy carrying case when not in use to prevent damage.
- Calibració: As mentioned in Section 7, regular calibration (typically yearly) by qualified professionals is essential for accuracy.
- Restaura la configuració: If parameters are incorrect or the instrument malfunctions (e.g., continuous alarm), use the 'Restore settings' option in the 'SET' menu. This function requires a password to activate and should be used with caution.
11. Solució De Problemes
- Lectures inexactes: Perform zero and span calibration. Ensure the sensor inlet is clear and the filter is clean.
- Sense energia: Check battery level and recharge if necessary. Ensure the charging cable and adapter are properly connected.
- Alarmes que no funcionen: Verify alarm settings (low and high points) in the menu.
- El dispositiu no respon: Try restarting the device. If issues persist, consider using the 'Restore settings' function (requires password).
12. Especificacions
| Característica | Descripció |
|---|---|
| Marca | ATO |
| Número de model | GD200-N2 |
| Estil | Digital |
| Font d'alimentació | Funciona amb bateria |
| Pes de l'article | 0.7 lliures |
| Tipus d’alarma | So, llum, vibració |
| Humitat de funcionament | Fins al 95% (sense condensació) |
| Classificació de temperatura superior | 50 graus centígrads |
| Recompte d'unitats | 1.0 recompte |
13. Suport
For any questions, issues with the product, or to request an electronic user manual, please contact ATO customer support. Calibration kits are available for purchase separately if needed.