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1-8 channel gas control alarm host

The RA900 series is a two-channel/four-channel/eight-channel gas alarm controller. It consists of universal metal shell, switching power supply, motherboard, interface board, alarm and other parts. The display part is composed of 0.8 inch digital tube, which displays the concentration of each channel in turn. The display is clear and can adapt to different light environment. At the same time, the channel state information is indicated. The key part consists of a number of high-quality keys, which feel good when pressed and effectively improve the user's operating feel. In program design, high safety key trigger scheme is adopted - press down to start the identification key, release to complete the identification. The key signal below 20ms is invalid, the key signal between 20ms and 3 seconds is normal, and the key signal over 3 seconds is long press. With sound and light alarm (optical alarm optional), multiple groups of alarm relay output.

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                                       产品特点:
◆ 控制器供电AC220±20%,50HZ;输出电压DC24V,控制器功耗<2W。
◆ 采用数码管和LED显示,使用寿命长亮度高功耗低,显示清晰适应不同光线环境,能直观显示浓度,单位,报警,故障等信息。  
◆ 内嵌ST的32位高性能低功耗单片机,能快速处理探测器传输过来的信号并实时显示浓度信息。
◆ 声光报警功能,光报警选配,探测器发生故障,低报,高报时发出不同频率的声报警。
◆ 多达四组继电器输出(无源),继电器输出可自定义以适应不同场合使用。
◆ 探测器信号通讯方式可选:4-20mA,RS485(出厂默认4-20mA,RS485可选)。
◆ 带消音功能,由于误操作或测试需要导致控制器报警时可按消音键消音。
◆ 8通道控制器带通道锁定功能,锁定后还可以切换通道,方便某一通道的实时检测和测试。
◆ 高质量按键,按压区域大按压手感良好,有效提升操作体验。
◆ 控制器机箱门和机箱主体衔接处采用了简单防水功能,机箱金属外壳表面经过光滑处理有一定触摸手感和抗压。
◆ 控制器进线处采用防水防尘的接线头,能有效固定进线。
◆ 壁挂式安装,方便控制器拆卸,选配安装支架。
技术参数

名称1-8路气体报警控制主机
显示方式数码管,LED显示
输入电压AC220V±20%,50HZ
功耗<2W
通道数蕞多8通道
探头供电DC24V,300mA/路
输入信号4-20mA(RS485可选)
继电器输出无源,容量:AC220V/2A,DC24V/2A
声光报警声报警1米处声压>80dB,光报警可选
工作温度-20℃~+50℃
工作湿度≤95%RH,无冷凝
主体材质:冷轧板,表面喷涂
安装方式:壁挂式安装(可定制安装支架)
尺  寸:L325mm*W220mm*H74mm(8通道主机)
重    量:2.6KG左右(8通道主机)
执行标准:GB 16808-2008
质量保证:质保期壹年,保修期内免费维修。

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