\B3.0  LIMITATIONS\b

	\B3.1  Physical Properties\b

	Natural gas properties are limited to:

			0.55 <= SPGG < 2.0

			1.05 <= TEMPRD < 3.0

			0  <= PRSPRD < 30

	Liquid correlations used here should be within the following limits:

			14.696 Psia < PRS < 6000 Psia

			32 deg F < TEM < 250 deg F

	In addition the oil properties are limited by a specific oil gravity
	range of:

			0.63 < SPGO < 2.0

	and water properties are limited by a maximum salt-content:

			0 % < NaCl < 25 %


	\B3.2  Orifice Limitations\b
   
	  For specifications regarding tolerances and restrictions to 
	  the orifices themselves, length of pipe preceding and 
	  following the orifice, and tapping points, you are advised 
	  to check the standard (Ref. 1).

	  The beta ratio, BETA (orifice to tube diameter ratio, 
	  BETA = OD/PID) is limited as follows:

	  Flange taps:      0.20 < BETA < 0.75
	  
	  D and D/2 taps:   0.20 < BETA < 0.75
	  
	  Corner taps:      0.23 < BETA < 0.8

	  These limits do not apply for restriction orifices.

	  The limitations on pipe diameters and orifice diameters are:

	  Flange taps and D and D/2 taps:  50 mm < PID < 760 mm
	  
	  Corner taps:                     50 mm < PID < 1000 mm

	  Orifice diameters are limited for all tapping types to:

				OD > 12.5