GE PanaFlow HT User Manual page 52

Chapter 3. Initial Setup and Programming
3.6.1 Settings (cont.)
System Date
SIL Limits
SIL Limits
Low Sil -12.2000m/s
Low Warn -12.2000m/s
Up Warn 12.2000 m/s
Up Sil 12.2000 m/s
UserPref/ Setting
System Date
SIL Limits
Density
Kinematic Viscosity
measurement.
42
Use the arrow keys to select the correct response and press
to the previous display.
The next option is for SIL Limits. There are four flow limits related to functional
safety that the operator may choose to set. In most cases, the default values for
these limits do not need to be changed.
To enter the SIL Limits option, highlight
Note: To enter this option, you must enter a SIL User or higher level password.
Use the arrow keys to enter the limits and press
Lower Functional Limit (LFL), Lower Warning Limit (LWL), Upper Warning
Limit (UWL), and Upper Functional Limit (UFL). The LFL and UFL are
defaulted to the design limits of the system and do not need to be changed unless
the operator chooses to set an upper and lower flow rate that is critical to the
safety of the SIS. The LWL and UWL only need to be set if the LFL and UFL are
used. The Safety Manual describes SIL limits in much greater detail.
After SIL Limits, select Density to set static and reference density. Mass Flow is
calculated by multiplying the measured value of Volumetric Flow by the static
density. Standardized Volumetric Flow is calculated by multiplying the measured
value of Volumetric Flow by the ratio of static density to reference density.
Finally, enter a static value for Kinematic Viscosity, in centistokes. This value is
used to determine the Reynolds number correction factor for the flow

[ ]
. The screen returns

SIL Limits [ ]
and press .

[ ]
. The four SIL limits are the
PanaFlow HT User's Manual