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Howd Mühle (Shanghai) Trading Co., Ltd.
ADD: Room 502, No. 96, Lane 365, Jiangqiao
Town, Jiading District, Shanghai, China
E-mail：muhle@howd.com.cn
产品列表
流量控制器（开关）
Flow controller (switch)
流量控制器（开关）
编号:
HWFA1机械式流量开关当流量达到预设值时.机械结构触发磁性开关发出信号，用于流量的通断检测。● 压力损失小,结构紧凑
● 重复性好，重复精度可达到±2%
● 带有流量刻度条,现场可进行开关动作点设定
● 双开关量输出可选，用于设定高低点流量报警
● 耐压性能好，最大可耐压200bar
● 液体和气体均可测量
● 密封性好（机械部分与电子部分完全隔离）
● 适用于小口径流量测量
在线式安装，适用于G1"以下的小口径流量测量，比较经济
● 适用于高低点报警场合
● 气液两用型
主要用于工业自动化/ 机械设备/ 空气压缩工业/ 制冷及空调
编号:
On-line mounting, mechanical flow switch, for
liquid or gaseous media. Sturdy plastic, aluminum
or stainless steel case is optional. Minimal
pressure loss, good repeatability, pollution
resistance, complete isolation of mechanical and
electronic parts, suitable for small flow economy. With switch setting scale, users do not need to set on site. LED display switch status, double switch
output is available. Gas liquid dual, industrial automation/mechanical equipment/air compression industry/refrigeration and air conditioning.
编号:
The HWFA3 piston flow switch contains a magnetic piston with a precise spring support inside that pushes the piston backward, and the magnetic piston triggers an external micro switch or spring tube. Optional pointer flowmeter head to display instantaneous flow rate. Optional digital flowmeter head to display instantaneous flow. Output analog or high switching model.
The inner part is all-metal structure, optional pointer flow switch, with high reliability and repeatability, complete isolation between mechanical part and electronic part, high voltage, normally open output, large contact capacity, temperature and pressure compensation.
编号:
HWFA4 series heat flow switch adopts heat diffusion principle. There are two temperature sensors in the probe: one is used as a reference sensor to measure the temperature of the medium, and the other is used as a measurement sensor after being heated. The temperature difference between the two sensors is used as the basis for measuring the flow velocity. When the flow velocity of the medium increases, the temperature difference decreases, and vice versa. The temperature difference value is converted into standard electrical signal and displayed after processing.
The HWFA4 series are all designed with all-metal shell, with 8-bit LED showing flow trend and switching status. One product is suitable for various pipe diameters. It can be set by keyboard or computer. No moving parts, maintenance-free, can be used in a variety of media.
编号:
HWFA5基于热式原理，在密封的探头内包含两个电阻，其中一个加热的作为探测电阻，另一个未被加热作为基 准电阻，当介质流动时，加热电阻上的热量被带走，电阻值被改变，两个电阻差值被用作判断流速的依据。 无活动部件，免维护，安装方便， 一种型号适用于多种管径要求，开关量连续可调，极低的压力损失，结构 紧凑，彩晶显示流动趋势及开关状态，集成一体化温度测量功能，支持温度报警与远程测量。
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