1. Nhanganyaya
This manual provides instructions for the safe and effective operation of the SMART SENSOR AS8906 Handheld NO2 Gas Leak Detector. This device is designed for detecting Nitrogen Dioxide (NO2) gas concentrations in various environments. Please read this manual thoroughly before using the product.
1.1 Ruzivo rwekuchengetedza
- Always operate the device in accordance with the instructions provided.
- Do not attempt to modify or repair the device yourself. Refer to qualified personnel for service.
- Ensure the device is charged using the provided charging adapter and USB cable.
- Avoid exposing the device to extreme temperatures or humidity outside the specified operating conditions.
- This device is intended for professional use and should be handled with care.
2. Chigadzirwa Pamusoroview
2.1 Package Zviri mukati
Pakeji yakajairika inosanganisira zvinhu zvinotevera:
- 1 x Nitrogen Dioxide Gas Monitor (AS8906)
- 1 x Chinyorwa cheMushandisi
- 1 x Adapter yekuchaja
- 1 x USB Cable
- 1 x Hand Carry Case
- 1 x Calibration Chitupa
- 1 x CNEX Certificate
- 1 x Gift Paper Box

Mufananidzo 2.1: Zvikamu zvepasuru zvakajairwa.
2.2 Device Components
Familiarize yourself with the main components of the AS8906 detector:

Mufananidzo 2.2: Mberi view and labeled components of the AS8906 detector.
- High Sensitive Sensor: Detects NO2 gas concentration.
- Sampling Pump Connecting Port: For attaching the optional samppombi refu.
- LCD skrini: Displays gas concentration, battery status, and other information.
- Pasi Bhatani: Used for navigation and decreasinkukosha kwe g.
- Kumusoro Bhatani: Used for navigation and increasinkukosha kwe g.
- Alamu yekurira: Emits an audible alert when gas concentration exceeds set limits.
- Kuchaja Port: Yekubatanidza USB yekuchaja tambo.
- Alamu Yechiedza: Visual alert (LED) when gas concentration exceeds set limits.
- Simba On / Off Bhatani: Controls device power.
- Enter Bhatani: Inosimbisa zvakasarudzwa uye zvigadziriso.
2.3 Dimensions
The AS8906 detector features a compact design for portability.

Mufananidzo 2.3: Zviyero zvemudziyo.
Dimensions: 120.2mm (Height) x 64.5mm (Width) x 38.3mm (Depth).

Figure 2.4: The compact size allows for easy portability.
3. Setup
3.1 Kuchaja Chishandiso
The AS8906 detector is powered by a built-in 3.7V Li-battery. Before first use, ensure the device is fully charged.
- Locate the charging port at the bottom of the device.
- Batanidza tambo ye USB yakapihwa pachiteshi chekuchaja.
- Connect the other end of the USB cable to the charging adapter.
- Plug the charging adapter into a standard power outlet.
- The battery indicator on the LCD screen will show charging status. A full charge typically provides up to 12 hours of continuous operation.

Figure 3.1: Charging port location.

Figure 3.2: Gas detector with recharge adapter.
3.2 Kubatanidza iyo Sampling Pump (Optional)
The optional sampling pump (AS8930) is designed to assist the gas detector in environments with limited access or poor air circulation. It does not operate independently and requires power from the gas detector.
- Gadzirisa sampling pump with the gas detector's sampling pump connecting port.
- Securely attach the sampling pump to the gas detector using the two closed-type screws. Ensure a tight connection to avoid poor contact.
- Connect the soft rubber tube (500mm long) to the nozzle of the samppombi refu.
- Zvakakosha: Do not connect any other voltage power supply to the sampling pump to prevent damage.

Mufananidzo 3.3: Sampling pump and accessories.
4. Kushanda
4.1 Kubatidza/Kudzima
- Kubatidza: Dzvanya uye ubate iyo Simba On/Kudzima bhatani until the LCD screen illuminates. The device will perform a self-test.
- Kudzima: Dzvanya uye ubate iyo Simba On/Kudzima bhatani kusvika skrini yadzimwa.
4.2 Kunzwisisa Chiratidziro
The high-density digital LCD screen displays real-time gas concentration values, battery status, and other operational indicators. The backlight function allows for use in dark areas.
- PPM: Indicates parts per million, the unit for gas concentration.
- Battery Icon: Inoratidza huwandu hwekuchaja kwebhatiri huripo.
- Alarm Indicators: Visual cues for alarm status.
4.3 Alarm Mabasa
The device features high and low alarm functions with three alert methods: sound, light, and vibration. Alarm values are adjustable.
- When the gas concentration reaches a preset high or low alarm value, the device will activate its sound, light, and vibration alarms.
- The alarm sound can reach up to 80dB.
4.4 Adjusting Alarm Values
Refer to the on-screen menu for adjusting high and low alarm thresholds. Use the Up uye Pasi buttons to navigate and change values, and the Enter bhatani rekusimbisa.
4.5 Using the SampLing Pump
Apo sampling pump is connected, it will draw air into the detector, allowing for gas concentration measurement in remote or confined spaces. The air flow velocity is approximately 0.5 cubic inches per hour, with a maximum gas sample collecting distance of about 50 feet.
5. Kuchengeta
5.1 Kuchengeta Battery
- Recharge the device when the battery indicator shows low power to ensure continuous operation.
- Dzivisa kupedza simba rebhatiri nguva nenguva kuti rirambe richirarama kwenguva refu.
- If storing the device for an extended period, charge it to approximately 50% and recharge every few months.
5.2 Kuchenesa
- Pukuta kunze kwemudziyo nekanyoro, damp jira.
- Do not use abrasive cleaners or solvents, as these can damage the casing kana sikirini.
- Ensure no liquids enter the sensor area or charging port.
5.3 Calibration
The device comes with a calibration certificate. For optimal accuracy and compliance, periodic professional calibration is recommended. Refer to the manufacturer or authorized service centers for calibration services.
6. Kugadzirisa matambudziko
If you encounter issues with your AS8906 detector, refer to the following common problems and solutions:
| Dambudziko | Zvinogona Kukonzera | Solution |
|---|---|---|
| Mudziyo haubatike. | Bhatiri rakaderera kana rapera. | Charge the device using the provided adapter and USB cable. |
| Kurava kusina kururama. | Sensor contamination or need for calibration. | Ensure the sensor area is clean. Consider professional calibration if readings remain inconsistent. |
| Alarm not sounding/lighting/vibrating. | Alarm settings configured incorrectly or disabled. | Check alarm settings in the device menu. Ensure volume and vibration are enabled. |
| Sampling pump not working. | Poor connection to the detector or pump malfunction. | Iva nechokwadi chekuti sampling pump is securely attached with screws. Verify the detector is powered on. |
Kana dambudziko rikaramba riripo mushure mekuedza mhinduro idzi, taura nerutsigiro rwevatengi kuti uwane rumwe rubatsiro.
7. Zvinotsanangurwa
7.1 Detector Zvinotsanangurwa
| Feature | Detail |
|---|---|
| Brand | SMART SENSOR |
| Model | AS8906 |
| Gas Type | Nitrogen Dioxide (NO2) |
| Measurement Range | 0 ~ 20 ppm |
| Resolution | 0.1 ppm |
| Kushanda Nheyo | Electrochemical sensor |
| Alarm Type | Sound, Light, Vibration (adjustable values) |
| Alarm Sound Level | Kusvika ku80dB |
| Operating Temperature | -10~50°C |
| Kushanda Humidity | 15~95% RH (standard) |
| Simba Source | 3.7V Li-battery (Built-in) |
| Kushanda Current | 16mA |
| Continuous Operation | Approx. 12 maawa (yakazara kubhadharisa) |
| Material | ABS plastiki |
| Net Weight | 200g (7.1 ounces) |
| Dimensions | 120.2 x 64.5 x 38.3 mm |
| Certifications | JJG693; JJG695: JJG915 and GB3836 series anti-explosion standard, CNEX |
7.2 Sampling Pump Specifications (Optional Accessory)
| Feature | Detail |
|---|---|
| Kushanda Voltage Range | DC 2.2V-3.2V |
| Kushanda Current | <280mA |
| Nozzle Diameter | 2.5mm |
| Noise | <75 dB |
| Dimensions | 100.8 x 62.3 x 50 mm |
| Max Sample Distance | Approx. 50 tsoka |
| Air Flow Velocity | Approx. 0.5 cubic inches per hour |
8. Warranty uye Tsigiro
8.1 Ruzivo rweWaranti
Your SMART SENSOR AS8906 Handheld NO2 Gas Leak Detector comes with a warranty. Please refer to the included Warranty Card in your package for specific terms and conditions, including warranty period and coverage details.
8.2 Mutengi Tsigiro
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact SMART SENSOR customer support. Contact information can typically be found on the product packaging, the warranty card, or the official SMART SENSOR website.





