| 规格和标准 |
Target gas: isobutane Protection grade: P67 equivalent Depth (mm): 81 Height (mm): 133 Width (mm): 154 Detection principle: New ceramic type Detection range (service range): 0 to 100%LEL 1 digit: 1%LEL Alarm setting value: 1st 10%LEL/2nd 50%LEL/OVER 100%LEL Alarm type: (Gas alarm) Self-holding, 2-stage alarm, TWA, STEL, OVER alarm (fault alarm) System abnormality, sensor abnormality, battery voltage drop, calibration fault Alarm operation: (Gas alarm) Lamp flashing, buzzer intermittent, Gas concentration indicator flashing (fault warning) lamp on, continuous buzzer, failure details display Alarm buzzer sound pressure: 95dB or more (at 30cm) Detection method: Diff d type Concentration display: LCD digital (7 segments + symbol + bar camera) Power supply: Lithium-ion battery unit (standard accessory) or dry battery unit 3 AA alkaline batteries/special accessory) Continuous time: Lithium-ion battery unit> 18 hours or more (when fully charged, no warning, at 25°C) 12 hours or more (when new batteries, no warning, no lighting, At 25°C) Operating temperature and humidity range: -20 to +50°C, 95%RH or less (no condensation) Explosion-proof: Intrinsically safe explosion-proof structure (Ex ia II C T4 X) Functions: LCD backlight, data logger, peak显示,日志数据显示
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