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` , , � .�__ ---- -- <br /> � OSTP Pump Tank Sizing, Dosin� and Float uxrvERs�TY <br /> Mlnnesota Pollution and Timer Setting Design Worksheet oF�xrrEsoTA <br /> ConuolAgency <br /> TIMER or DEAAAND FLOAT SETTINGS <br /> Select Timer or Demand Dosing: O Tmer O oemand oose <br /> A. Timer Settings <br /> 13. Required Flow Rate: <br /> •Note: This value must be <br /> A. From Design(Line 11 of Pressure Distribution or Line 10 of Non-Level•): 34 GPM adjusted after field <br /> B. Or calculated:GPM=Change in Depth(in)x Galtons Per Inch(Line 1 or 2)/Time Interval in Minutes measuremeni& <br /> C�in X�9a1/in���min=C� GPM calculation. <br /> 14. Choose a Flow Rate from Line 13.A or Y3.B above. � GPM <br /> 15. Catculate TIAAER ON setting: <br /> Totol Dosing Volume(Line 11)IGPM(Line 14) <br /> �gal i���Pm-�Minutes ON <br /> 4 <br /> 16. Calculate TIMER OFF settir�g: <br /> Minutes Per Day(1440)/Doses Per Day(Line 9)-Minutes On(Line 15) <br /> 1440 min : ��doses/day - ���^�n = ��Minutes OFF <br /> 17. Pump Off Float-Measuring from bottom of tank: <br /> Distance to set Pump Of f Float=Go(lons to Cover Pump(Line 5)l Gollons Aer lnch(Line 1 or 2): <br /> �ga�i��gaUin= ��nches <br /> 18. Alarm float-Measuring from bottom of tank: <br /> pistance to set Alorm Float=Tank Depth(4A)-Alarm Depth(Line 13) <br /> I_�in - ��in = �in <br /> B. DEAAAND DOSE FLOAT SETTINGS <br /> 18. Calcutate Floar Seporation Distonce using Dosing Yotume. <br /> Totc!Dosing Volume(Line 12)/Gallons Per lnch(Line 2) <br /> g7 gal= 25.8 gaVin= 3.4 inches <br /> 19. Measuring from bottom of tank: <br /> A. Distance to set Pump Off Float=Pump Height +9lock Height (Line 5)+Alorm Depth (Line 13) <br /> �g� j�+�� jn = 10 Inches <br /> �--- <br /> g, Distance to set Pump On Ftoot=Distance to Set Pump-Off Floot(Line 19.A)+Float Separotion Disiance(Line 18) <br /> 10 in+ 3.4 in = 9 3 Inches <br /> C. Distance to set Alarm Float=Otstance to set Pump-On Float (19.6)+Alcrm Depth (2-3 inches) <br /> 13 in+ 2.0 in= 15 inches <br /> FLOAT SETTINGS <br /> DEMAND DOSING TIMED DOSING <br /> Atarm Depth 15 in Alarm Depth in <br /> Pump On �3 in 52 Gallons <br /> Pump Off �� in 86.9 Ga��ons Pump Off in <br /> 258.06 Gallons <br />