C053 – Gas Totalisation – Pulse Output Meter
Description
This calculates the totals for pulse output based meters where the metered fluid is a gas.
References
IP Petroleum Measurement Manual Part Ⅻ – Static and Dynamic Measurement of Light Hydrocarbon Liquids – Section 1: Calculation Procedures
AGA 7 – Measurement of Natural Gas by Turbine Meters (2006)
Kelton calculation reference C053
KIMS calculation reference K135
Kelton Calculation C203 – Totalisation Conversion
Kelton Calculation C264 – Flow Rate – Pulse Output Meter
Options
Method
- Injected frequency
- Injected pulses
This option is used to select whether the total will be calculated from the flow rate if frequency is chosen or calculated directly using the number of pulses measured.
Enter elapsed time as
- Duration
- Start and end time
This option is used to select whether the time over which the totals are to be calculated is entered as a duration or as a start and end time.
Totals
- Use start and end totals
This option allows the user to enter displayed totals for the start and end of the totalisation process for comparison with the calculated results.
The remaining options are the same as are found in K133 – Gas Flow Rate – Pulse Output Meter
Calculation
Duration
If the duration is calculated this is done by:
| Where | ||
| t1 | = | End time |
| t0 | = | Start time |
Totals
If injected pulses is selected the totals are calculated from the equation:
If injected frequency is selected the totals are calculated from flow rate by:
| Where | ||
|---|---|---|
| IntF | = | Interpolation factor |
| MF | = | Meter Factor |
| Inj_pulses | = | Injected pulses |
| Kf | = | K-factor |
| Ctsm | = | Correction for temperature on steel of meter |
| Cpsm | = | Correction for pressure on steel of meter |
| Q | = | Flow rate |
| t | = | Duration |