N.Y. Comp. Codes R. & Regs. tit. 16 § 226.2

Current through Register Vol. 46, No. 25, June 18, 2024

Section 226.2 - Definitions

The following definitions shall apply wherever the defined terms are used in Parts 226, 227, and 228 of this Title:

(a) Accessory. Any meter reading device, which is mechanically attached to a meter and could affect its accuracy, used to display or transmit meter information to a remote location or any associated meter correction device, either remote or attached, used to adjust the reading of a meter index.

(b) Bell prover. A test-standard using a calibrated cylindrical container or bell in which a quantity of air is collected using oil as a sealing medium. The bell prover is connected to a meter under test and the quantity of air that passes through the meter, as measured by the meter, is compared with the change in the quantity of air within the bell to determine the meter's accuracy.

(c) Certification. The verification of a test-standard's accuracy by this commission, by its designee, or by commission approved procedures, conducted with standards or equipment that trace their accuracy to the National Institute of Standards and Technology.

(d) Correction device. An accessory used to adjust the measured volume to a volume at standard conditions.

(e) Cubic foot bottle. A specially constructed and calibrated bottle that can measure exactly one cubic foot of air. The calibration of the bottle is certified by the National Institute of Standards and Technology.

(f)

(1) Cubic foot, metered. The quantity of gas that occupies one cubic foot when under pressure and temperature conditions existing in the meter.

(2) Cubic foot, standard. The quantity of gas that under a pressure of 14.73 pounds per square inch absolute and at a temperature of 60° F occupies a volume of one cubic foot.

(g) Differential test. A comparison of the difference in pressure readings between the inlet and outlet of a rotary meter at a gas flow rate within the meter's rated capacity range, with those supplied by the manufacturer or taken at installation.

(h) Fixed pressure factor measurement. A correction method system, used only in conjunction with pressure regulated installations, that employs a billing multiplier to adjust the measured volume of gas delivered to standard pressure conditions.

(i) Flow rate tests.

(1) Check-rate test. A meter test conducted with a flow rate at the lower end of the meter's rated capacity range.

(2) Open-rate test. A meter test conducted with a flow rate at the higher end of the meter's rated capacity range.

(j) Gas meter. Any device used to measure the units of gas passing through it.

(1) Domestic meter. A gas meter with a rated capacity of 500 CFH or less.

(2) Large volume meter. A gas meter with a rated capacity over 500 CFH.

(k) Meter accuracy. The degree to which a meter correctly measures the units of gas passing through it, determined by comparing the registration on the meter with that registered by a test-standard.

(1) Percent proof. The volume indicated by the test-standard divided by the volume indicated by the meter x 100.

(2) Percent accuracy. The volume indicated by the meter divided by the volume indicated by the test-standard x 100.

(l) Meter class. A designation for different ranges of meter rated capacities.

(m) Meter index. The meter mechanism that displays the quantity of gas that has been delivered through the meter.

(n) Meter tests.

(1) In-test. A test of a meter made soon after its removal from a customer's premises or at said premises and prior to any disassembly or adjustment.

(2) Out-test. A test of a meter made prior to its use at a customer's premises.

(o) Non-working reference standard. A certified reference meter or other device used to check the accuracy of a test-standard.

(p) Prover. A type of test-standard for measuring the accuracy of gas meters.

(q) Rangeability. The manufacturer's stated ratio of maximum flow rate to minimum flow rate for a given meter.

(r) Rated capacity.

(1) Diaphragm type meters. The rated capacity of a diaphragm type gas meter is the approximate number of cubic feet per hour of 0.60 specific gravity gas (air = 1.00), at standard conditions, that the meter is designed to pass when the average differential pressure between the inlet and outlet of the meter is 0.5 inch of water column.

(2) Other types of meters. The rated capacity of other types of gas meters will be the nameplate capacity specified for that particular type of meter or as otherwise specified in the commission's order approving it.

(s) Sampling. A statistically valid method of obtaining a representative quantity of meters from a homogenous lot or group.

(t) Sonic nozzle prover. A test-standard for testing gas meters using nozzles calibrated to indicate the time required for the passage of one cubic foot of air at their corresponding sonic flow rates. The sonic nozzle prover is connected to the meter under test. The time necessary to pass a given number of cubic feet on the meter is compared with the time indicated on the nozzle.

(u) Supercompressibility. Deviation of a gas from the ideal gas laws.

(v) Standard conditions. The standard base conditions of pressure and temperature to which natural gas volumes are referenced.

(w) Strapping. A method of checking a bell prover by determining the relations between displaced volume and linear movement of a bell prover by means of measuring scale length, bell circumference, and displacement. The calibration of all measuring equipment used to take these measurements must be traceable to the National Institute of Standards and Technology.

(x) Test-standard. Any certified device used for determining the accuracy of a meter or accessory.

(y) Transfer prover. A test-standard for testing gas meters consisting of a master meter, an electronic control panel, pressure and temperature correcting gauges, a blower, flow control valves, and exhaust silencers. The test is conducted by connecting the transfer prover with the meter under test. The quantity of air indicated on the meter under test is compared with the quantity of air measured on the transfer prover.

(z) Utility. Includes all gas corporations as defined in the Public Service Law.

N.Y. Comp. Codes R. & Regs. Tit. 16 § 226.2