| 规格和标准 |
Target gas: ammonia Depth (mm): 24 Height (mm): 67 Width (mm): 54 Detection principle: constant potential electrolytic type Sampling method: diffusion type Display range (ppm): 0.0-400.0 Alarm setting value (ppm): 1st 25.0/2nd 35.0/3rd 35.0/TWA 25.0/STEL 35.0 Continuous time: Approximately 2000 hours Gas alarm: 3-stage alarm, STEL alarm, TWA alarm, over-alarm Fault alarm: sensor connection/break, battery voltage drop, faulty calibration, clock abnormality, system abnormality Alarm return operation: Self-hold Alarm operation: Blinking lamp, intermittent buzzer sound, gas concentration value flashing, vibration Buzzer volume (dB): 80dB or more (30cm) Power supply: 2 AAA Ni-MH batteries (Eneloop) Explosion-proof structure: Inherently safe explosion-proof structure Functions: Vibration, one-touch calibration, peak value display, temperature display
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