FSD-W?seires?micro?differential?pressure?controls?(Hereinafter?referred?to?as?the?controller)?are?widly?used in?air?cooling?or?water?cooling?units,Website:http://www.fs-controls.com,?such?as?plate?heat?exchanger,double-pipe?heat?interchanger,Shell?and?tube heat?exchanger,?etc.The?controller?monitor?the?statues?of??the?water?flow?and?the?water?pump?and?filter?in order?to??insure?the?heat?Exchanger?under?regular?work.Micro?Differential?Pressure?switch?is?a?kind?of?automatic?controller.It's?working?principle:installed?on?the?water?inlet?and?outlet?of?the?heat?exchanger?to?sensor?the?differential pressure?of?the?water?inlet?and?outlet.When?heat?exchanger?with?impurity,?jams,?the?phenomenon?such?as?ice,?causing?the?inlet?and?outlet?pressure?difference?increases,?when?the?pressure?difference?larger?than?the?set?value,?the?controllerdisconnect?circuit,?so?as?to?protect?the?heat?exchanger.?Controller?can?be?installed?in?any?heat?exchanger?pipe?diameter,......url:http://www.fs-controls.com