A6175 ROC800-Series Remote Operations Controller Instruction Manual

ROC800-Series Instruction Manual

1-16

General Information

Revised Jul-14

view the logs, save them to a disk file, or print them using ROCLINK

800 software.

ROC800L

To accommodate NIST Handbook 44 (HB 44) requirements, the

firmware in the ROC800L tracks up to 1000 weights and measures

(W&M) events.

1.5.2 Meter Runs and Stations

You can group similarly configured meter runs into stations, which

provide great benefits during configuration and reporting. You can also

configure each meter run, which eliminates redundant meter run data

within a station and enables faster data processing.

You can group meter runs among the maximum of twelve stations in

any combination. Meter runs belong in the same station when they have

the same gas composition data and calculation methods. Stations allow

you to:



Set contract hours differently for each station.



Designate several individual meter runs as part of a station.



Configure one to twelve meter runs for each station.

Note

For the ROC800L, you configure runs and stations using the

individual user programs.

1.5.3 ROC800 Flow Calculations

For the ROC800, gas and liquid calculation methods include:



AGA and API Chapter 21 compliant for AGA linear and differential

meter types.



AGA 3 – Orifice Plates for gas.



AGA 7 – Turbine Meters (ISO 9951) for gas.



AGA 8 – Compressibility for Detailed (ISO 12213-2), Gross I (ISO

12213-3), and Gross II for gas.



ISO 5167 – Orifice Plates for liquid.



API 12 – Turbine Meters for liquid.

ROC800 firmware completes full calculations every second on all

configured runs (up to 12) for AGA 3, AGA 7, AGA 8, ISO 5167, and

ISO 9951.

AGA 3 calculations conform to the methods described in American Gas

Association Report No. 3, Orifice Metering of Natural Gas and Other

Related Hydrocarbon Fluids. Based on the second and third editions, the

calculation method is 1992 AGA 3.

The AGA 7 calculations conform to methods described in American

Gas Association Report No. 7, Measurement of Gas by Turbine Meters,

and use the AGA 8 method for determining the compressibility factor.