Flow meter measurement accuracy:

All meters are built in the same way and use the same formula to calculate the flow rate. There are many situations that affect the accuracy of the measurements. Trying to avoid them would increase the accuracy.

1. If there are air bubbles in the lines. Usually this might occur when using a pump to transfer water.

2. Incidents when the flow of water is too slow or too fast that is out of the measuring range. This meter has a range of 0.45 gpm and 3.7 gpm. If the flow of water is sometimes falls out of range, then it can't be counted or measured.
If you are not able to modify your setup in any way to avoid the effects of inaccuracy. You can apply a correction factor to the measurement. For example, take two to three different measurement to find the correction factor for the total count. Use a container that you can tell it has 1 gallon, 2 gallons, and 5 gallons. Use a stop watch to time how much time it takes for the meter to advance 1 gallon. If it takes 70 seconds to advance 1 gallon, then do the same test again to see if the time is about 70 seconds again. Then do the same test for 2 gallons of water. The time should be about 2 times 70 seconds or 140 seconds. If you do this test few times, and the results are the same that means you have found the correction factor. So, the correction factor in this case is 70 sec/ 60sec = 1.1666. If the meter reads 125 gallons then the actual value is about 125 * 1.1666 = 146 gallons.

Please understand most digital flow meters measures similarly. Industrial grade or commercial grade high accuracy flow meter are hundreds and thousands of dollars. Using a simple correction factor you can achieve higher accuracy regardless of your setup.

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2 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
5 x	Optional: 564 Membrane Filter Housing Wrench Opener
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	HK120-P-TK for USA 110V / 60Hz
1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
11 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
4 x	201, 1st stage sediment filter (replace every 6-12 months)
4 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	741-38, Diverter Valve for RO DI Water Systems
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
5 x	Parts, Ro Water System Installation Parts Bag 1/4"
3 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
4 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	FRQ850, Flow Restrictor 850ML / min
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
6 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	.SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x	IM60, Ice Maker or RV Water Filter, Inline Typle
5 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	FRQ200, Flow Restrictor 200ML / min
1 x	568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
4 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	Discontinued RO155
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
3 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x	205, 5th stage final carbon filter
1 x	723, Feed Water Adapter with Ball Valve
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
4 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
3 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
5 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x	HK120-P-TK-220V for EURO 220V / 50Hz
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
2 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	719, Drain Saddle Clamp / Valve
1 x	EMT-10, Empty Filter Cartridge Casing Housing
4 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x	718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
2 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	FRQ300, Flow Restrictor 300ML / min
2 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	5th Stage pn215 Refillable inline DI filter (color change)
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x	913, 5th stage inline carbon filter (every 12 months)
2 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	.K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x	WSACF-150T, Whole House Water Treatment ACF-150T
3 x	KT-103, Optional Manual Membrane Flush Valve
1 x	4th Stage Color Changing DI Filter SC207 for AR-104H
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x	MK420, Maintenance kit for RO565
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	Discontinued RO6ALK
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	205 2nd stage solid carbon block filter (replace every 12 month)

View Cart	$12,878.74

2 x	B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
2 x	FHP2012, 20" long Filter Cartridge Casing Housing RO260 RD322
5 x	Optional: 564 Membrane Filter Housing Wrench Opener
2 x	701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
1 x	HK120-P-TK for USA 110V / 60Hz
1 x	CP-KOR24, O-RING Oring FOR KOOLERMAX MEMBRANE FILTER HOUSING
1 x	B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x	.RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
11 x	Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
2 x	MK225, Maintenance kit for Honeywell RO9100 Filtercold RO5 AV180
2 x	MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x	718TB38, Tubing, 20 feet 3/8" white LLDPE PE for drinking water
4 x	201, 1st stage sediment filter (replace every 6-12 months)
4 x	818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x	1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x	741-38, Diverter Valve for RO DI Water Systems
1 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
5 x	Parts, Ro Water System Installation Parts Bag 1/4"
3 x	CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
4 x	2nd stage C10 carbon block filter (replace every 6-12 months)
1 x	MK200, Maintenance kit for Rotek Systems RCT-103 and RTF-265
1 x	FRQ850, Flow Restrictor 850ML / min
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD150
1 x	350UP, Upgrade Kit TFC50 gal/day (includes US membrane filter)
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR125
6 x	532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
2 x	4th stage TFC150 US membrane filter (every 2-3 yrs)M150 P/N3150
2 x	215, 5th or 6th Stage Refillable inline DI filter (color change)
3 x	532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x	Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
2 x	213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x	.SW-1C COUNTERTOP WATER FILTER SYSTEM (CLEAR HOUSING)
1 x	IM60, Ice Maker or RV Water Filter, Inline Typle
5 x	733, Built-in Pressure Gauge 0 to 150 psi for Koolermax RO syste
1 x	FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x	721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
2 x	335, 4th stage TFC 35/45 US membrane filter (every 2-3 years)
2 x	FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
1 x	NM-5104, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x	FRQ200, Flow Restrictor 200ML / min
1 x	568,Heavy-Duty Filter Housing Wrench, HoneyWell or FilterCold
2 x	3rd stage C10 carbon block filter (replace every 6-12 months)
4 x	1st stage SF05 sediment filter (replace every 6-12 months)
1 x	Discontinued RO155
1 x	285, Big Blue SED2005BB 20" Sediment filter WH25 WH250 WH2201
2 x	MK300, Maintenance kit for RO535, RO435, RO545, AR104H
2 x	NM-5102, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
3 x	KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x	FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
1 x	7044-K Union Tee Connector Fitting Compression type 1/4"
2 x	CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x	FM60, STEEL BRACKET TRIPLE HOUSING 10" STANDARD FOR RO MOUNT
1 x	205, 5th stage final carbon filter
1 x	723, Feed Water Adapter with Ball Valve
1 x	718TB12, Half Inch Tubing 20 feet 1/2" LLDPE PE White Tube
4 x	531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
2 x	752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x	CP-KOR45, O RING FOR KOOLERMAX BOTTOM FILTER HOUSING CASING
3 x	532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x	Optional 566 Filter Housing Wrench Case Opener KoolerMax System
3 x	205, 3rd stage solid carbon block filter (replace every 12month)
1 x	745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
5 x	KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
2 x	6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x	732, Inline Pressure Gauge 0 to 300 psi for RO filter system
1 x	HK120 KoolerMax Aeroponics Hydroponics 150G RO Filtration System
1 x	HK120-P-TK-220V for EURO 220V / 50Hz
1 x	Annual Filter Kit Koolermax Series KPAK-3 Sediment Carbon Block
2 x	FPK, 6 pcs Fitting Pack Union Connector 1/4" quarter inch
1 x	718, Tubing 30 feet 1/4" white tube LLDPE PE for drinking water
2 x	673, Replacement UV Lamp Light for 602 (6 Watts)
1 x	719, Drain Saddle Clamp / Valve
1 x	EMT-10, Empty Filter Cartridge Casing Housing
4 x	701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x	717, Tubing 15 feet 1/4" white tube LLDPE PE for drinking water
1 x	718xl, Tubing 100 feet 1/4" white tube LLDPE PE for drinking wat
2 x	205, 3rd stage solid carbon block filter (replace every 12 month
1 x	6th Stage pn215 Refillable inline DI filter (color change)
1 x	FRQ300, Flow Restrictor 300ML / min
2 x	4042-K Male Elbow Fitting Compression type(membrane housing use)
1 x	205, 2nd stage carbon block filter (replace every 12 months)
1 x	727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
1 x	NM-5001C, HONEYWELL COUNTERTOP WATER FILTER DISCONTINUED SW1
1 x	326, 3rd stage TFC 24 /26 US membrane filter (replace 2-3 yrs)
2 x	OPTIONAL: 567 Filter Housing Wrench Case Opener WHOLE HOUSE WH
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR122
1 x	5th Stage pn215 Refillable inline DI filter (color change)
1 x	BBK20, Replacement Filter 20" Big Blue Whole House WH-2201 WH250
1 x	RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x	UC7000 HONEYWELL UNDER THE COUNTER WATER FILTER (WHITE, LARGE)
2 x	Optional: 566 Filter Housing Wrench Opener WaterGeneral System
2 x	BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x	3rd stage Special High Efficiency Membrane Filter HTFC-150
1 x	913, 5th stage inline carbon filter (every 12 months)
2 x	602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x	5th stage 225 Inline Alkaline filter with clear housing (annual)
1 x	759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
1 x	TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
1 x	.AR122 KoolerMax 6STAGE Aquarium Reef REVERSE OSMOSIS RODI WATER
1 x	KF612UP, SUBSTITUTE/Upgrade Faucet Oil Rubbed Bronze Fisnish
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RD322
1 x	.K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x	WSACF-150T, Whole House Water Treatment ACF-150T
3 x	KT-103, Optional Manual Membrane Flush Valve
1 x	4th Stage Color Changing DI Filter SC207 for AR-104H
1 x	335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle AR104H
2 x	Annual Filter Kit Koolermax Series KPAK-4 Sediment Carbon Block
1 x	SC445, Specialty Filter SPECIAL ALKALINE FILTER Specialty Filter
1 x	MK420, Maintenance kit for RO565
1 x	6044-combo Compression Type Fitting Elbow and Tee fitting
1 x	FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x	318, 4th stage TFC-18 US membrane filter (replace every 2-3 yrs)
1 x	KF320, Elite Series: Brushed Nickel / Stainless Steel Faucet
2 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6ALK
1 x	Discontinued RO6ALK
1 x	WH-250, Whole House Water Treatment Sediment Carbon Filter Syste
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle K6150P
1 x	.AR125NTF KoolerMax AR125 RO System Shell without tank & faucet
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x	Value Pack- Entire 3 Years of Replacement Filters Bundle RO155
1 x	Optional 5th or 6th Stage upgrade inline DI filter(color change)
1 x	2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x	WH-25, Whole House Water Treatment Sediment Filter System 20" Bi
1 x	DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x	KF310UP, SUBSTITUTE/Upgrade to KYTON FAUCET POLISHED CHROME FINI
1 x	581, Ice Maker Hookup Kit Connect RO water to Fridge Ice Maker
1 x	PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x	SC209, Specialty Filter Nitrate Removal Filter
1 x	KF310, Elite Series: Polish Chrome Drinking Water Faucet
1 x	205 2nd stage solid carbon block filter (replace every 12 month)

View Cart	$12,878.74