贪玩娱乐棋牌老版本2018免费下载

产品规格︰ ◆ High-quality gas sensor and MCU control.
◆ Gas concentration indication in %LEL or ppm on spot profits the users conveniently to know about the working environment on time.
◆ Auto zero calibration function avoids detection fault due to zero drift.
◆ LCD indication.
◆ If the gas sensor is disabled or damaged, it will give fault alert automatically.
◆ Infrared remote adjustment profits the user to make adjustment without opening the up cover.
◆ Fault adjustment indication function avoids fault and ensures correct operation.
◆ Relay output of high-alarm and low-alarm

产品优点︰ ◆ Detection principle: Catalytic gas sensor or electrochemical gas sensor
◆ Detecting gas: Combustible gas or CO
◆ Sampling method: Natural diffusion
◆ Detecting range: Combustible gas: (0～100)%LEL ?CO: (0～1000)ppm
◆ Accuracy: Combustible gas: 1%LEL. CO: 1ppm
◆ Calibration way: Infrared remote calibration
◆ Working condition:
Combustible gas: Tem.: -40℃～70℃ Hum.: ≤95%RH
CO: Tem.: -20℃～50℃ Hum.: ≤95%RH
◆ Explosion-proof: Exd ⅡCT6
◆ Power supply: DC24V±25%
◆ Signal output: 4～20mA ??Switch output: Two
◆ Consumption: ≤3W
◆ Cable: ≥RVVP 2.5mm2×3(for connecting 4～20mA)
◆ Transmit distance: ≤1000m
◆ Weight: ≤3600g
◆ Working pressure: 86kPa～106kPa
◆ Installing screw size: G1/2