Series FMS Flow Sensor FMS-1is for applications requiring RELATIVE measurement and set-point of flow rate.This means that the actual velocity of the flow or the quantitativemeasurement in GPM is not known and is not important. What is important isthat the set-point can be set as a “percentage of” or “relativeto” the full flow rate. No other flow sensor could do it this simply oreffectively.
HOW IT OPERATES
The model FMS uses a set of flashing LED’s to indicate flow. All 7 of theLED’s will remain lit to show 100% flow rate. The flow OK light will also belit showing that the established full flow rate is what is flowing in thepipe. When you initially set the flow rate, it will mark that as your 100%mark. If your flow reduces below the 50% mark, you will get an alarm from thesensor.
If flow increases beyond the initiallyestablished flow rate, the “Overflow” LED light will come on. It isthen the operator’s decisions as to whether to ignore it if too much flow isnot a problem 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 recalibrateditself to the new flow rate. The “Flow OK” LED will again light andthe set-point will automatically be re-set at the 50% of flow point.
Automatic scaling and set-point No moving parts Learn function for flow rate Push-button re-scaling if needed Easy to install Perfect for proving flow in boilers, hot waterheaters, and chillers.Service:Water and water based liquids/oil and oil-based liquids.Wetted Materials: Sensor Head: 303 SS.Low Flow Set Point: Auto set @ 50% /Adjustable via “set” push button.Set Point Range: 5.0 ft/sec (0-150 cm/sec.)Repeatability: <0.5%.Hysteresis: 10% of set-point value typical.Medium Temperature Limits: -4 to 176°F(-20 to 80°C.)Pressure: 450 psi (30 bar).Response Time: 25 seconds (typical).Supply Voltage: 20-30 VDC (short circuitprotected).Switching Current: <200 mA.Power Consumption: 6 W max.Electrical Connection: M12 male socket4pin. Comes with 6.5 ft (2 m) cable with M12 connector and pigtail.Process Connection: 1/2″ male NPT.Enclosure Rating: NEMA 4 (IP65).Initial Operation: After 15 seconds.Switch Type: PNP N.O. (switch closed withflow), PNP N.C. (switch open with flow).Weight: .55 lb (.25 kg).
| Model Number |
Description | |
|---|---|---|
| FMS-1 | Flow sensor, PNP N.O. | |
| FMS-2 | Flow sensor, PNP N.C. |
