C135 – Density Computation – Sarasota / Peek

Description

This calculation returns the density from the time period, calibration constants and process values.

References

Kelton calculation reference C135

FLOCALC calculation reference F040

KIMS calculation reference K147

Options

Calculate

  • Air Check

Use this option if you only want to calculate the corrected time period.

  • Density

Use this option if to calculate the density, this option also calculates the corrected time period.

Calculation

All calculations are performed in SI units unless otherwise stated.

Corrected time period calculation

The temperature and pressure corrected time period constant τc is calculated by

Where
τ0 = The time period constant from the calibration certificate
Ct = The temperature coefficient obtained from the calibration certificate
t = The densitometer temperature
tr = The densitometer reference temperature obtained from the calibration certificate
Cp = The pressure coefficient obtained from the calibration certificate
P = The densitometer pressure
Pr = The densitometer reference pressure obtained from the calibration certificate

Density Calculation

The density ρ is calculated by:

Where
D0 = A densitometer constant obtained from the calibration certificate
τ = The measured time period
τc = The temperature and pressure corrected time period constant
K = A densitometer constant obtained from the calibration certificate

 

 

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