scope:

This standard specifies a procedure for predicting the bulk moduli of petroleum or hydrocarbon oils used as fluids (in the absence of air bubbles) in hydraulic fluid power systems and for other purposes.

This standard provides graphical techniques to obtain moduli of these fluids without extended calculations and with such accuracy as would be required for the practical calculation of hydraulic stem parameters.

The useful temperature range is from OC to 270 C, with a pressure range from atmospheric to 700,000 kPa (7,000 bar).¹⁾

Select the appropriate bulk modulus according to the problem and conditions of operation (see definitions).

Refer to annex A for range of measurement.

Refer to annex B for sample calculations.

1) 1Pa=1N/m²; 1bar =100 kPa=14.5 lbf/in²