<晴风村n style="color: rgb(51, 51, 51); font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; font-size: 16px;">  <晴风村n style="word-break: break-all; font-family: 宋体; text-size-adjust: none; font-size: 16px; white-晴风村ce: pre-wrap; color: rgb(68, 68, 68);">粉尘浓度传感器主要用于矿山、水泥厂等粉尘作业场所总粉尘浓度的连续 监测。是为了满足现有煤矿监测井下粉尘浓度利用激光散射原理开发的高科技传感器，能够在自然风流状态下实时的、就地、连续不间断的监测显示井下粉尘浓度，同时输出与洒水喷雾的降尘装置开关量信号，实现了测尘降尘的zui佳效果。

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;">粉尘浓度传感器技术参数

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;">防爆型式：矿用本质安全型，

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">测量范围：0 mg/m  ～ 1000 mg/m

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">粉尘浓度测量相对误差：± 15 %

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">采样流量：3 L/min

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<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">采样流量误差：不大于± 2.5 %

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">遥控范围：距离不大于5 m，角度小于120

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">输出信号：200～1000 Hz频率，输出高电平大于3 V (负载电阻为1.5 kΩ)； RS485接口，通讯波特率1200 bps

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">供电电压：DC 12 ～24.5 V，额定工作电压DC 18 V

<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;"><晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">工作电流： ≤3 00 mA

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<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word; line-height: 2;">粉尘浓度传感器工作原理

<晴风村n microsoft="" style="word-break: break-all; font-family: "Microsoft Yahei", Tahoma, Verdana, Arial; text-size-adjust: none; word-wrap: break-word;">外部空气在抽风机的吸力下通过迷宫式进气口进入传感器暗室。空气中的浮游粉尘在暗室内受到激光发生器发出的平行光照射时，粉尘的散射光强度正比于质量浓度，该散射光经过光电转换器转换成光电流，经主控板的光电流积分电路转换成与散射光强成正比的光电脉冲数。计算脉冲数即可测出粉尘的相对质量浓度，通过标定在设置键盘上预设<晴风村n style="word-break: break-all; font-family: 宋体, SimSun; text-size-adjust: none; word-wrap: break-word;">K值，工作时便可直接在数码显示屏上显示空气中的粉尘质量浓度(mg/m?)。

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