K factor flow formula. Theoretical discharge through circular orifices formula. You can see that the flow has insecure by about 61 lmin each time we changed the k factor by 50 this is because the pressure has remained the same at 150 bar and if you look at the k factor formula above the pressure is squared which will give us 1225 this is then multiplied by the head k factor in this case 50 100 and 150 in are example. Meter k factor is defined as the number of pulses per unit mass or volume at a particular flow rate.
In fire protection engineering the k factor formula is used to calculate the discharge rate from a nozzle. The flow rate of a nozzle is given by where q is the flow rate in litres per minute lm p is the pressure at the. The axial design of turbine flow meter is inherently linear within a known turndown range typically 151 based on velocity of the measured fluid.
Pulses per barrel from a coriolis meter is instead an adjustable parameter that can be set to any desired value within the range of the meter pulse output channels up to the maximum of the field. The device has unmatched capability of precise and repeatable k factor generation based on the turning of the balanced rotor and the subsequently generated frequency pulse signal via the magnetic coil assembly providing. Every meter in each turbine contains a k factor or a ratio of the pulses per unit of flow.
The number of pulses output per unit of flow eg. Flow meter k factor. Computes a flow rate in gpm given a psi and coefficient of the flow device.
Q p x k q flow rate in gpm p velocity pressure in psi k k factor of flow device. Computes a flow rate in gpm given a psi and a k factor of the flow device. Every time a turbine rotates within a flow rate the turbine blade passes a face of magnet that creates an electronic pulse.
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