Panametrics DigitalFlow DF868 - Page 27

DigitalFlow™ DF868 Multipurpose Ultrasonic Liquid Flowmeter Programming Manual (2-Channel) 17
Chapter 1. Programming Site Data
1.6.3.7 Tracking Windows
Note: This step only appears if you have selected Transit-Time.
10. Press [F1] if you do not want Tracking Windows, or [F2] if you want to enable the windows. (Tracking windows are
used to detect the receive signal when you are unsure of the fluid soundspeed.)
1.6.3.8 Fluid Type
11. Use the [F1]-[F4] and [
 keys to select the Fluid Type. The selections for the fluid type vary, depending on
whether:
• the ENERGY OPTION is ON or OFF; and
• the TRACKING WINDOW is enabled or disabled.
Refer to Table 9 if ENERGY OPTION is OFF, or to Table 10 if ENERGY OPTION is ON.
Note: Some of the fluid types may require additional selections as shown in the following tables.
1.6.3.9 Reynolds Correction
12. Press [F1] to turn Reynolds Correction off, or [F2] to turn it on.
Note: Reynolds Correction is a number based on the Kinematic Viscosity and flow rate of the fluid. It should be
enabled for most applications. Also, if you have enabled a temperature compensation table (see page 48),
a message indicates that the table is active.
13. When you enable the Reynolds Correction Factor, you must also enter the Kinematic Viscosity of your fluid, as
listed in Sound Speeds and Pipe Size Data. Use the numeric keys to enter a value, and press [ENT].
1.6.3.10 Calibration Factor
14. Enter a value for the flow Calibration Factor and press [ENT]. The default value is 1.00, but values between 0.50
and 2.00 may be entered.
Table 9: Fluid Types for ENERGY OFF
Tracking Windows =
NO Additional Selections YES Additional Selections
WATER Select NORML or SEA and press [ENT]. If NORML is
selected, enter the Water Temperature and press
[ENT].
W100 No additional selections required.
OIL Select LUBE or CRUDE and press [ENT]. W260 No additional selections required.
METH No additional selections required. OIL No additional selections required.
ETH Enter the Fluid Soundspeed and press [ENT]. OTHER Enter the Minimum Soundspeed and press
[ENT]. Then enter the Maximum
Soundspeed and press [ENT].
LN2 No additional selections required.
FREON No additional selections required.
OTHER Enter the Fluid Soundspeed and press [ENT].
Table 10: Fluid Types for ENERGY ON
Tracking Windows =
NO Additional Selections YES Additional Selections
WATER Enter the Water Temperature and press [ENT]. W260 No additional selections required.
MIXED Enter the Fluid Soundspeed and press [ENT]. Enter
the Percentage of Water and press [ENT].
MIXED Enter the Percentage of Water and press
[ENT].
OTHER Enter the Fluid Soundspeed and press [ENT]. OTHER Enter the Minimum Soundspeed and press
[ENT]. Then enter the Maximum
Soundspeed and press [ENT].