| 规格和标准 |
Target gas: phosphine Protection grade: IP66/67 equivalent Depth (mm): 24 Height (mm): 67 Width (mm): 54 Detection principle: constant potential electrolytic type Sampling method: diffusion type Display range (ppm): 0.00-20.00 Alarm setting value (ppm): 1st 0.30/2nd 0.60/3rd 0.60/TWA 0.30/STEL 1.00 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: Intrinsically safe explosion-proof structure ([Dry battery specification] Ex ia IIC T4 ga/[可充电电池规范] ea ii iic t3 ga) 功能:振动,一电动校准,峰值显示,温度显示
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