DWYER FMS系列流量开关的详细描述：

DWYER FMS系列流量开关详细信息：
产品名称:  FMS系列流量开关
产品型号:  FMS系列

适用于水或油，输出：PNP常开或PNP常闭

产品介绍：

Series FMS Flow Sensor FMS-1 is for applications requiring RELATIVEmeasurement and set-point of flow rate. This means that the actualvelocity of the flow or the quantitative measurement in GPM is notknown and is not important. What is important is that the set-pointcan be set as a "percentage of" or "relative to" the full flowrate. No other flow sensor could do it this simply oreffectively.

原理：
The model FMS uses a set of flashing LED's to indicate flow. All 7of the LED's will remain lit to show * flow rate. The flow OKlight will also be lit showing that the established full flow rateis what is flowing in the pipe. When you initially set the flowrate, it will mark that as your * mark. If your flow reducesbelow the 50% mark, you will get an alarm from the sensor.

If flow increases beyond the initially established flow rate, the"Overflow" LED light will come on. It is then the operator'sdecisions as to whether to ignore it if too much flow is not aproblem and may actually choose this flow rate to be the new"normal" flow rate. This can be done by just depressing the "set"button until all LED's flash. The FMS has now recalibrated itselfto the new flow rate. The "Flow ok" LED will again light and theset-point will automatically be re-set at the 50% of flowpoint.

技术参数：

介质：Water and water based liquids/oil and oil-based liquids.

材质： Sensor Head: 303 SS.

低流量设定： Auto set @ 50% / Adjustable via "set" push button.

设定范围： 5.0 ft/sec (0-150 cm/sec.)

重复性： < 0.5%.

滞后： 10% of set-point value typical.

介质温度： -4 to 176°F (-20 to 80°C.)

压力： 450 psi (30 bar).

响应时间： 25 seconds (typical).

电源： 20-30 VDC (short circuit protected).

电流： < 200 mA.

功耗： 6 W max.

电气连接： M12 male socket 4pin. Comes with 6.5 ft (2 m) cable with M12connector and pigtail.

过程连接： 1/2" male NPT.

封装： IP 65 (NEMA 4).

初始操作： After 15 seconds.

输出： PNP N.O. (switch closed with flow), PNP N.C. (switch open withflow).

重量： .55 lb (.25 kg).

型   号
 输出类型
 
FMS-1
 PNP N.O (常开)
 
FMS-2
 PNP N.C (常闭)