Similar to a Venturi flow meter, an orifice flow meter (10.6) operates by providing a flow obstruction of area, A, that generates a static pressure drop, P. The flow rate formula, Q, is equivalent to Equation 6 in the Demo Lab. = √ ∆ where is density and C is a coefficient. For a pipe of 1 m and a flow range of 20°C water between 10-100 m3 /min and C = 0.75, plot the expected form of the calibration curve for flow rate versus pressure drop over the flow range. Is the static sensitivity (d∆P d ) constant? Said differently, do these flow meters respond to a change in flow rate in a linear fashion?