1. Kirish
The TASI TA8408 Series Gas Leak Detector is a portable device designed for the detection of various volatile combustible gases. It features a highly sensitive sensor, quick response time, and provides both sound and light alarms to indicate gas presence. This manual provides essential information for the safe and effective use of your gas leak detector.

2. Paket tarkibi
Barcha buyumlarning mavjudligiga va shikastlanmaganligiga ishonch hosil qilish uchun, iltimos, qabul qilishdan keyin paket tarkibini tekshiring:
- 1 x Gas Leak Detector (Host)
- 1 x Rangli quti
- 1 x mato sumkasi
- 1 x Ingliz tili qo'llanma

3. Mahsulot xususiyatlari
The TASI TA8408 Series Gas Leak Detector offers the following key features:
- Portable design for easy handling.
- High/low sensitivity switching for varied detection needs.
- Quick response time of less than 2 seconds.
- Yuqori sezgir yarimo'tkazgich sensori.
- Concentration unit selection (for TA8408B/C models).
- Ability to detect multiple volatile combustible gases.
- VA color screen display.
- Sound and light alarm for clear indication of gas presence.
- Flexible goose neck hose (approximately 40cm or 15.74 inches).
- Batareya quvvati kam bo'lishi haqida xabar.
- Avtomatik o'chirish funktsiyasi.



4. Sozlash
4.1 Battery Installation (TA8408A/B)
- Qurilmaning orqa tarafidagi batareya bo'limi qopqog'ini toping.
- Qopqoqni oching.
- Insert three (3) 1.5V AAA batteries, ensuring correct polarity.
- Batareya bo'limi qopqog'ini mahkam yoping.

4.2 Charging (TA8408C)
The TA8408C model features a built-in USB Lithium Direct Charge battery.
- Berilgan USB kabelini qurilmadagi zaryadlash portiga ulang.
- Connect the other end of the USB cable to a suitable USB power adapter (not included).
- Qurilma displeyda zaryadlash holatini ko'rsatadi.

4.3 Qurilma tugadiview
Familiarize yourself with the main components and controls of your gas leak detector:

- Sensor: Located at the tip of the goose neck, detects gas.
- Goose Neck: Flexible probe for reaching confined spaces.
- LCD displey: Shows gas concentration, sensitivity level, and other indicators.
- Quvvat tugmasi: Qurilmani yoqadi/o'chiradi.
- SENS Button (Lo/Mid/Hi): Adjusts sensitivity level.
- PPM/%LEL Button (TA8408B/C): Switches between PPM and %LEL concentration units.
- C/F Button (TA8408B/C): Switches between Celsius and Fahrenheit for ambient temperature display.
- Speaker Icon Button (TA8408B/C): Toggles alarm sound on/off.
- NOLI tugmasi: Initiates zero calibration.
5. Foydalanish bo'yicha ko'rsatmalar
5.1 Quvvatni yoqish/o‘chirish
- Press and hold the Power Button to turn the device ON or OFF.
- Upon powering on, the device will undergo a warm-up period of approximately 30 seconds. The display will show "WAIT..." during this time.
5.2 Nolinchi kalibrlash
- For TA8408A, the device performs auto zero calibration.
- For TA8408B/C, the device performs auto zero calibration upon startup. You can also perform manual zero calibration by pressing the "ZERO" button in a clean air environment.
5.3 Sezuvchanlikni sozlash
- Press the "SENS" button to cycle through sensitivity levels: Low (Lo), Medium (Mid), and High (Hi).
- Higher sensitivity is suitable for detecting small leaks, while lower sensitivity helps to pinpoint larger leaks or avoid false alarms in environments with trace gases.
5.4 Gazni aniqlash
- Ensure the device has completed its warm-up and zero calibration.
- Slowly move the sensor (goose neck tip) towards the suspected leak area.
- Observe the display and listen for the alarm. The response time is less than 2 seconds.
- The device will emit a sound and light alarm when gas is detected. The intensity of the alarm and the display reading will increase with higher gas concentration.

5.5 Display Interpretation (TA8408B/C)
The TA8408B/C models feature a digital analog bar display with specific alarm thresholds:
- SENS-H: High sensitivity, alarm when concentration is ≥ 1.00% LEL (500 PPM).
- SENS-L: Low sensitivity, alarm when concentration is ≥ 10.00% LEL (5000 PPM).
- %LEL: Lower Explosive Limit percentage.
- PPM: Parts Per Million, indicating a few percent of the leakage.

5.6 Unit Switching (TA8408B/C)
- Press the "PPM/%LEL" button to switch between Parts Per Million (PPM) and Lower Explosive Limit (%LEL) units for gas concentration display.
- Press the "C/F" button to switch between Celsius (℃) and Fahrenheit (℉) for ambient temperature display.
5.7 Alarm Sound On/Off (TA8408B/C)
- Press the Speaker Icon button to toggle the audible alarm sound on or off. The visual alarm will remain active regardless of the sound setting.
6. Xizmat ko'rsatish
6.1 Tozalash
Qurilmani yumshoq mato bilan artib oling, damp cloth. Do not use abrasive cleaners or solvents. Ensure the sensor tip is kept clean and free from obstructions.
6.2 Saqlash
When not in use, store the device in its cloth bag in a cool, dry place. The recommended storage temperature is -10℃ to 60℃ (14℉ to 140℉) with 20% to 80% relative humidity.
6.3 Battery Replacement (TA8408A/B)
When the low battery notice appears on the display, replace the AAA batteries as described in Section 4.1.
7. Muammolarni bartaraf qilish; nosozliklarni TUZATISH
- Qurilma yoqilmaydi: Check battery installation (TA8408A/B) or charge level (TA8408C). Ensure batteries are fresh and correctly inserted.
- No gas detection or inconsistent readings:
- Ensure the sensor tip is clean and unobstructed.
- Verify the device has completed its warm-up period.
- Perform zero calibration in a clean air environment.
- Adjust sensitivity to a higher level if detecting small leaks.
- Ensure the device is used within its specified operating environment.
- Alarm sounds continuously in clean air: Perform zero calibration in a fresh air environment.
8. Texnik shartlar
The following table details the technical parameters for the TASI TA8408 Series Gas Leak Detectors:
| Parametr | TA8408A | TA8408B | TA8408C |
|---|---|---|---|
| Displey diapazoni | Analog bar | 0~9999ppm / 0.00~20.00%LEL | 0~9999ppm / 0.00~20.00%LEL |
| Gazni aniqlash | Acetone, acetylene, alcohol, ammonia, benzene, butane, ethanol, ethylene oxide, gasoline, ethane, hydrogen, methane, naphtha natural gas, paint thinner, propane, solvents, etc. | ||
| Aniqlik | ±10% FS (methane) | ||
| Sezuvchanlik | <50ppm (methane) | ||
| Javob vaqti | <2-lar | ||
| Isitish vaqti | Taxminan 30s | ||
| Displey turi | Analog bar | Digital analog bar | Digital analog bar |
| Signal rejimi | Ovozli va yorug'lik signalizatsiyasi | ||
| Nol rejimi | Avtomatik nol | Auto and Manual zero | Auto and Manual zero |
| Qurilmani almashtirish | × | √ | √ |
| Ambient Temp. Display | × | √ | √ |
| Alarm On/Off Function | × | √ | √ |
| High/Low Sensitivity Selection | √ | ||
| Batareya kamligi haqida eslatma | √ | ||
| Avtomatik o'chirish | √ | ||
| Goose Neck Hose | Taxminan 40 sm | ||
| Ish muhiti | 0~50℃ / 20~80%RH | ||
| Saqlash harorati | -10℃~60℃ / 20~80%RH | ||
| Og'irligi | Taxminan 420 g (batareya bilan birga) | ||
| Quvvatlantirish manbai | 3*1.5V AAA batareya | 3*1.5V AAA batareya | USB Lithium Direct Charge |
| Mahsulot hajmi | 153x60x30 mm | ||

9. Foydalanuvchi maslahatlari
- Always perform a zero calibration in a fresh air environment before starting your detection work to ensure accurate readings.
- When searching for small leaks, use the high sensitivity setting and move the probe slowly to allow the sensor enough time to react.
- For pinpointing the exact source of a leak, start with high sensitivity to detect the general area, then switch to lower sensitivity to narrow down the location.
- Keep the sensor tip clean to prevent false readings or reduced sensitivity.
- Be aware of the auto-off function to conserve battery life.
10. Kafolat va qo'llab-quvvatlash
For warranty information, technical support, or service inquiries, please refer to the contact information provided with your purchase documentation or contact the seller directly. Keep your purchase receipt as proof of purchase.





