Loop Leader PD6620 Series Loop-Powered Rate/Totalizer Instruction Manual
25
Available Unit Classes and Units
The meter has preprogrammed rate and time base units. The following are available units to choose from:
Rate Time Bases (
TIME
)
/SECOND
Units per second
/MINUTE
Units per minute
/HOUR
Units per hour
/DAY
Units per day
Rate Units (
RATE
)
GAL/
(T)
Gallons per time unit (T)
L/
(T)
Liters per time unit (T)
IGAL/
(T)
Imperial gallons per time unit (T)
M3/
(T)
Cubic meters per time unit (T)
BBL/
(T)
Barrels per time unit (T)
BUSH/
(T)
Bushels per time unit (T)
cuYD/
(T)
Cubic Yards per time unit (T)
cuFt/
(T)
Cubic Feet per time unit (T)
cuIn/
(T)
Cubic Inches per time unit (T)
LiBBL/
(T)
Liquid barrels per time unit (T)
BBBL/
(T)
Beer barrels per time unit (T)
HECtL/
(T)
Hectoliter per time unit (T)
AF/
(T)
Acre-Foot per time unit (T)
CUSTOM/
Custom unit per time unit (T)
Note: for access to additional predefined units, you must disable the totalizer. See Disabling the Totalizer
(
TOTAL
) on page 44.
Setting Custom Units (
CUSTOM
)
When the desired unit of measure is not available, a custom unit may be programmed. Select the
CUSTOM
menu in order to enter a custom unit name.
Text values are set using the
Right
and
Up
-
Arrow
buttons. Press
Right-Arrow
to select next character
and
Up-Arrow
to increment character value. The selected character will flash. Press and hold the
Up
or
Right
-
Arrow
buttons to auto-increment or decrement the character. Press
Enter
to accept the character.
Notes:
•
Press and hold the
Right Arrow
while no character is being edited to erase all characters to the
right of the flashing character
•
Press and hold
Up
or
Right
Arrow
to auto-increment or decrement a selected character.
•
All text values, including tags and alarm messages, are set in a similar fashion.
Scaling the 4-20 mA Input
The 4-20 mA input can be scaled to the appropriate values for a given application. The 4-mA input (input
1) should have a corresponding display value (display 1) which represents the low end of the process
value range being measured by the transmitter. Likewise, the 20-mA input (input 2) should have a display
value (display 2) which represents the high end of the process value range.
For example:
If the meter is setup to accept a 4-20 mA input and display the flow of a pipe whose rate of
flow is between 0 and 100 gal/s, the transmitter would send a 4-mA signal when there is zero flow and a
20-mA signal when there is maximum flow. The meter should be programmed to interpret these inputs on
a display range of 0-100, so that at 4-mA the meter will display 0 and at 20-mA the meter will display 100.
Processes which require a non-linear scale can be accommodated using the linear (
LINEAR
), exponent
(
EXPONENT
), and square root (
SQROOT
) functions available in the Advanced menu. See Signal Input
Conditioning Functions (
FUNCTION
) on page 40.
A signal source is not needed to scale the meter; simply program the inputs and corresponding display
values.
C.UNIT
ABC
C.UNIT
ABC
Select
Character
to Change
C.UNIT
ACC
Increment
Selected
Character
C.UNIT
ABC
Decrement
Selected
Character
C.UNIT
ABC
Accept
Character
Change
Accept
Custom Unit
Name
