Philips Vortex Flow Meter F-2200 Series Manual De Usuario

F-2200 Series Vortex Flow Meter Installation and Operation Guide • Revised 12/08

14 

 

 

 

Wherever possible, the distance between the pipe centerline and the wall should be greater 

 

 

than 20”. This will allow for access to the electronics enclosure compartment where wire 

 

 

terminations are made. If adequate space is not available, fi rst connect all the cables to the 

 

 

terminals in the connection compartment (power supply and outputs) and then run the wires 

 

 

to an intermediate junction box (also see Section 3.2) before installing the meter. 

 
 

 

In all cases the meter requires a single-phase fl ow for proper operation. Liquid droplets in 

 

 

the gas or vapor, solid particles in the gas or liquid and gas bubbles in the liquid are not 

 

 

permitted.    

 

 

 

When operating with liquids, the meter requires a minimum downstream pressure 

 

 

 

to prevent cavitation. The formula used to determine the minimum downstream 

 

 

 

pressure is as follows:  

 

 

 

Pds(bar_g) > =(2.9*DP) + (1.3*Ps)-1.013  

 

 

 

Where DP=pressure drop of the meter, in Bar, as determined by the ONICON sizing 

 

 

 

program and Ps=saturation pressure, in Bar, at the operating temperature.  

 

 

 

For any fl uid, a fi lter or strainer may be used to remove the solid particles. This is 

 

 

 

especially important for meter sizes below 1” where a fi lter or a strainer is required.    

 

 

 

In case of steam or compressed gas, a moisture separator should be used 50D 

 

 

 

upstream of the meter if the dryness fraction is less than 95%. 

i 

Steam quality will affect the accuracy of the measurement. It is strongly recommended that a moisture 

separator be installed upstream of the inlet straight pipe run for anything less than 95% dry steam.