NOTE: THIS SECTION IS UNDER REVISION
PART 1: METERING
- GENERAL REQUIREMENTS
- All buildings shall be metered for electricity, steam, condensate, water supply (potable, fire irrigation and sewer deduction), natural gas, chilled and heating water, and other utilities where applicable. At least one main meter per utility per building or structure is required. Additional sub-metering is encouraged and can be evaluated with support from the OSU Sustainability Office, which runs the campus utility metering program.
- The installation of any franchise utility-owned equipment shall be completed in accordance with the utility requirements of the supplier of the utility (i.e., Pacific Power, Consumer’s Power, NW Natural Gas, etc.).
- Utility meters shall be integrated with building management systems to allow for monitoring, trending and preservation of records for all utilities.
- Main meters shall have local (on site) displays and be located and positioned in a way that they are easily readable.
- Meters shall remain powered and operable during construction projects, unless prior permission is granted by the Project Manager and OSU Sustainability Office.
PART 2: METER SPECIFICATIONS
- Electricity meters: Electricity meters: Veris E51C2 Bi-Directional Power and Energy Meter or equivalent revenue grade meter with Modbus RTU communication. See Construction Standard 26 00 00 for additional information and functionality requirements.
- Steam meters: Foxboro Vortex 84F (flanged) flow meters equipped with digital remote transmitter, Modbus RTU output and/or Red Lion PAXP0000 remote totalizer (for local display) with PAXCDC40 Modbus Communications Card.
- Steam meters shall be sized and configured for estimated maximum steam flow. Select meter pipe sizes carefully. In some applications, it may be necessary to reduce the meter size relative to surrounding pipe size. This will allow for low flow accuracy while still providing the max flow measurements specific to expected building loads. When pipe sizes are increased to allow for distant future expansion and demand, this is particularly important.
- Meter installation requirements, such as lengths of unobstructed pipe, meter head position, etc., must be strictly followed.
- Condensate meters: Foxboro magnetic flow MAG2RT with digital remote transmitter, Modbus RTU output and/or Red Lion PAXP0000 remote totalizer (for local display) with PAXCDC40 Modbus Communications Card.
- Meter installation requirements, such as lengths of unobstructed pipe, meter head position, flooded pipe condition, etc. must be strictly followed.
- All water supply mains must be metered and meters must meet City of Corvallis and OSU requirements. This includes domestic, irrigation, fire and sewer deduct meters.
- Domestic, irrigation and sewer deduct meters on 1” pipe and smaller are to be Sensus SRIIaS
- Domestic, irrigation and sewer deduct meters on 1.5” pipe and larger are to be Sensus OMNI C2.
- Any meter 2” and larger must have a test port plumbed in with valve(s) to facilitate annual meter testing.
- Domestic meters 2” and larger must be installed with a bypass capability to facilitate annual meter testing. Irrigation meters are not required to have a bypass.
- Fire systems requiring a doublecheck backflow assembly, DCDA, also require a “snooper” meter alongside the DCDA to register any usage. These snooper meters are to be Sensus SRIIaS.
- Sewer deduct meters shall only be placed on lines dedicated to equipment that does not send water to storm and/or sanitary sewer drains.
- All meters shall be installed with the Sensus 520M radio transmitter. Transmitters for sewer deduct meters must be wired to an outside location, where transmission signals can be captured by the City of Corvallis tower.
- Sewer deduction meters: Sensus meters, to meet City of Corvallis requirements.1”pipe and smaller are to be SRII; 1.5” and larger are to be OMNI-type meters. Meter transmitter unit (MXU) shall be Sensus model 520-R, TouchCoupler- enabled to integrate with City radio-read system.”
- Natural gas meters: To be provided by the natural gas utility, currently Northwest Natural.