Using Advanced Features - GE DigitalFlow XGS868i Programming Manual

Chapter 1. Programming Site Data

1.8.4 Using Advanced Features

This option enables you to access the more advanced features of the meter. In this option you can do the following:
•
enter a table of K factors - to compensate for non-linear flow rates (see below).
•
enable mass flow - calculated for static fluid density (see the next page).
1.8.4a Entering K Factors
Use this option to enter a table of K factors. K factors are used to create a curve for the flow range (based on velocity)
that compensates for non-linear flow rates. The meter accepts from 2 to 20 data pairs. Complete the following steps to
enter multiple K factors for velocity values:
Note: The K factors are supplied by the factory; without them the K factor table cannot be edited.
1. In the Keypad Program, scroll to PROG and press [Enter].
2. In the PROG menu, scroll to CH1 or CH2 and press [Enter].
3. In the Channel PROGRAM menu, scroll to Setup and press [Enter].
4. Scroll to ADVAN. Press [Enter].
5. Scroll to MULTK, and press [Enter].
6. Scroll to ON to activate, or to OFF to deactivate multiple K factors, and press [Enter].
Note: If you selected OFF, go to Procedure Options on the next page.
7. Scroll to the Custom Type of K factor desired: CstV (velocity) or CstR (Reynolds). Press [Enter].
•
If you selected CstR, the meter asks for the Kinematic Viscosity. Use the arrow keys to enter the desired value,
and press [Enter].
8. Scroll to Yes to Edit Table, or to No to retain the current values, and press [Enter].
Note: If you scroll to No, go to Procedure Options on the next page.
1.8.4b Editing K Factors
1. Use the arrow keys to enter the number of K factors (2 to 20) in the table and press [Enter].
2. Enter the velocity (or Reynolds) value for K factor number "X" and press [Enter].
Note: When editing the K factor table, the velocities must be entered in increasing order.
3. Enter the K factor corresponding to velocity number "X" (0.333 to 3.0) and press [Enter].
4. Repeat Steps 2 and 3 for each pair of values.
18 DigitalFlow™ XGS868i Programming Manual