i-made color portable multi-gas detector alarm device TN-4A This portable multi-gas detector alarm device TN-4A (hereinafter referred to as Alarm) is a continuous detection of multi-gas concentration, easy to use personal protective gas detector . OLED color display can show the detected gas concentration, and other information, a large bee dB, alarm indicator and vibration alarm current gas concentration has exceeded the set alarm point. The alarm device conform GB3836.1-2010 "explosive atmospheres" - Part 1: General requirements for equipment, GB3836.2-2010 "explosive environment" Part 1: by flameproof enclosures "D" to protect the equipment, GB3836.4-2010 "explosive environment" Part 4: Intrinsic safety by "1" to protect equipment and other standards and requirements of the relevant provisions. Second, the characteristics 1. color oled display continuous real-time display of gas concentration 2. The high degree of protection for dark, damp environment 3. Automatic zero and calibration function 4. boot automatically shipped fully functional tests (including sensor failure detection) 5. Chinese menu operation mode 6 gas concentration curve browsing, easy and intuitive (optional) 7 screen display can be flipped upside down (optional) 8. event recorder function (optional) 9. detect some types of toxic gases You can set (optional) 10 has a sound, light, vibration and other three kinds of ways to set the alarm 11. rechargeable lithium-ion polymer battery Third, the technical indicators 1. Detection of gas type and measuring range Measuring range No. 1 measurement of carbon monoxide gas species ( 0 ~ 1000) μmol / mol 2 hydrogen sulfide (0 ~ 100) × 10-6 3 oxygen (0 to 30.0)% 4 combustible gas (0 ~ 30.0)% LEL 5 sulfur dioxide (0 ~ 100) × 10-6 6 Hydrogen (0 ~ 1000) × 10-6 7 ammonia (0 ~ 100) × 10-6 8 Ozone (0 ~ 1) × 10-6 9 CL2 (0 ~ 50) × 10-6 10 HCN (0 ~ 30) × 10-6 11 phosphine (0 ~ 10) × 10-6 12 nitric oxide (0 ~ 100) × 10-6 13 Nitrogen dioxide (0 ~ 50) × 10-6 14 infrared carbon dioxide (0 to 5.0 )% 2. Cell parameters: Rated voltage 3.7V, nominal capacity 1800mAh 3. Current: normal current: ≤100mA (excluding carbon dioxide, when the screen is off) ≤20mA (including carbon dioxide, when the screen is off) Alarm current: ≤240mA (excluding carbon dioxide ) ≤120mA (carbon dioxide) 4. Explosion levels: ExdibIIBT3 Gb 5. combustible gas sensor types: catalytic combustion of oxygen: Buddha galvanic battery dioxide: infrared carbon monoxide, hydrogen sulfide, ammonia, sulfur dioxide, CL2, ozone, nitric oxide phosphine and other toxic gases: Electrochemical 6. Detection Mode: Diffused 7. Response time can be gas: t90 <60s oxygen: t90 <60s dioxide: t90 <30s ammonia, ozone gas within 160s, within phosphine 100s, other toxic gases ring time in less than 60s 8. full charge continuous working time: ≤14 hours (including flammable gas) ≤96 hours (excluding flammable gases) 9 Indication error: Carbon monoxide: ± 10% hydrogen sulfide: ± 5% FS combustible gas: ± 5% FS oxygen : ± 3.0% FS carbon dioxide: measuring range 0 ~ 0.50%, ± 0.1% (by volume) or less; measuring range 0.50% ~ 5.00%, ± (0.05% + 5% of the true value) other toxic gases: ± 10 % (display value) or ± 5% (full scale) within the enlarged 10 Environment: Temperature: -20 ℃ ~ 40 ℃ Relative humidity ≤90%, non-condensing 11. Storage Environment: Temperature: -20 ℃ ~ 60 ℃ Relative humidity ≤90%, non-condensing 12. charging temperature range: -0 ℃ ~ 40 ℃ 13. Executive Standard: GB12358-2006, GB3836.1-2010, GB3836.2-2010, GB3836.4-2010 14. Shell Material: ABS, pc, antistatic TPE 15 Dimensions: 130mm × 72mm × 36mm 16 Weight 310 g