25 calculators for gas metering, unit conversions, and distribution system design
Size ultrasonic flow meters with transit time calculations and AGA 9 diagnostic checks.
Size rotary and diaphragm positive displacement meters for distribution and industrial gas measurement.
Calculate upstream/downstream straight-run requirements and flow conditioner sizing for all meter types.
Calculate sampling requirements for spot and composite gas sampling including purge volumes and cylinder sizing.
Calculate heating value, specific gravity, molecular weight, and Wobbe Index from gas chromatograph composition.
RSS uncertainty budget for gas metering systems with pulsation error, transmitter turndown, and compliance checks.
Calculate gas flow rates or size orifice plates using Reader-Harris/Gallagher discharge coefficient with iterative Reynolds convergence.
Venturi flow measurement with high pressure recovery. Ideal for compressor surge control and high-flow applications.
Calculate supercompressibility factor (Fpv) for gas measurement flow corrections per AGA standards.
Size pressure regulator stations for natural gas distribution with capacity and safety relief calculations.
Size district pressure regulators for medium and low pressure gas distribution networks.
Design town border stations with regulation, measurement, odorization, and safety shutoff per federal code.
Size natural gas service lines from main to meter set assembly per AGA and NFPA standards.
Select excess flow valves for gas service lines per federal pipeline safety requirements.
Convert between MCF, MMCF, SCF, and other standard gas volume units for measurement and billing.
Convert between BTU, kWh, Joules, Therms, and other energy units used in gas measurement.
Convert gas volumes to energy units using heating value and BTU factors for billing and nominations.
Convert between Imperial and SI units for pressure, temperature, flow, length, and mass.
Convert temperatures between Fahrenheit, Celsius, Kelvin, and Rankine scales.
Convert H2S concentrations between ppm, grains/100 SCF, percent, and mg/m3.
Interpolate between data points in engineering tables for properties and correction factors.
Extrapolate data trends beyond known data points for engineering estimates and projections.
Calculate horsepower, torque, and speed relationships for motor and pump sizing applications.
Size instrument air compressors, receivers, and dryers for pneumatic control systems.
Look up resistance coefficients (K-values) for pipe fittings, valves, and other flow restrictions.
Typical uncertainty: ±0.5% to ±1.0% of reading
Distribution pressure: 0.25 psig to 60 psig typical
Standard conditions: 14.73 psia, 60°F
AGA 3 equations, discharge coefficient, beta ratio, Reader-Harris/Gallagher, and tap configurations.
ISO 5167-4 Venturi theory, pressure recovery, and compressor surge control applications.
AGA 8 detail and gross characterization methods for gas compressibility corrections.
Standard conditions, base pressure, volume correction factors, and gas measurement unit systems.
Heating value definitions, HHV vs LHV, energy equivalents, and gas-to-energy relationships.
Resistance coefficient theory, equivalent length method, and fitting loss calculations for piping systems.