Mr Spock
Active Member
For historical purposes I thought I'd update the water meter options that I found. This subject was discussed, along with AC and gas measurement, in another post Here
As of June 2009 here are the water meters I found that are appropriate for residential automation use. All of these units have mechanical displays that show the consumption with pulse outputs. If you don't mind spending a lot more (~$500), Omega also has units that output the gallon number in ASCII format.
Hayes: Out of the water meter business as of 2007. Too bad, they had nice meters with lots of options.
DLJ: Inexpensive (~$70), easily obtainable, mountable in almost any direction. Only available with 1pulse/Gallon with reed switch. The 3/4" line model part numbers are SJ50C or SJ75C depending on your desired min to max flow rates. I liked this unit, but feel 1pulse/Gallon is too course unless your a heavy user of water.
Alaxa: Inexpensive (60 euros), obtainable only in Europe (not in the US or Canada), should be mounted vertical. Only available with 1pulse/liter with reed switch. This meter's readout is in liters. The 20mm line model part number is LXSG-R20EP1.
Omega: Expensive (~$200), easily obtainable, should be mounted horizontal with register facing up. User configurable for 1pulse/10Gallons, 1pulse/Gallon, or 10pulses/Gallon. Options for reed switch or hall effect sensor (same price). The 3/4" line hall effect sensor model part number is FTB-8007B-PR. This is my favorite if you don't mind the high price.
EDIT: mounting position of Omega meter.
As of June 2009 here are the water meters I found that are appropriate for residential automation use. All of these units have mechanical displays that show the consumption with pulse outputs. If you don't mind spending a lot more (~$500), Omega also has units that output the gallon number in ASCII format.
Hayes: Out of the water meter business as of 2007. Too bad, they had nice meters with lots of options.
DLJ: Inexpensive (~$70), easily obtainable, mountable in almost any direction. Only available with 1pulse/Gallon with reed switch. The 3/4" line model part numbers are SJ50C or SJ75C depending on your desired min to max flow rates. I liked this unit, but feel 1pulse/Gallon is too course unless your a heavy user of water.
Alaxa: Inexpensive (60 euros), obtainable only in Europe (not in the US or Canada), should be mounted vertical. Only available with 1pulse/liter with reed switch. This meter's readout is in liters. The 20mm line model part number is LXSG-R20EP1.
Omega: Expensive (~$200), easily obtainable, should be mounted horizontal with register facing up. User configurable for 1pulse/10Gallons, 1pulse/Gallon, or 10pulses/Gallon. Options for reed switch or hall effect sensor (same price). The 3/4" line hall effect sensor model part number is FTB-8007B-PR. This is my favorite if you don't mind the high price.
EDIT: mounting position of Omega meter.