PRECISION DIGITAL Loop Leader Series User manual

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer
Instruction Manual
PRECISION DIGITAL CORPORATION
233South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone] www.predig.com
Loop-Powered Totalizer
Loop-Powered Rate/Totalizer
Loop-Powered Backlight with Red Backlight for Alarm Conditions
Display rate & total simultaneously
Total display includes commas for more intuitive readings
1.5 Volt Drop (4.5 Volt Drop w/ Backlight)
NEMA 4X, IP65 Front
-40 to 167°F (-40 to 75°C) Operating Temperature Range
Five Digit Top Line
Alphanumeric tag names
Total, Grand Total, or Non-Resettable Grand Total
Up to 13-digit total & grand total
Dual Line Display
1/8 DIN Shallow Depth Case
Optional Loop-Powered Solid State Relays
Optional 4-20 mA Analog Output

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
2
Disclaimer
The information contained in this document is subject to change without notice. Pre-
cision Digital makes no representations or warranties with respect to the contents
hereof and specifically disclaims any implied warranties of merchantability or fitness
for a particular purpose.
CAUTION: Read complete
instructions prior to installa-
tion and operation of the
meter.
WARNING: Risk of elec-
tric shock or personal
injury.
Warning!
This product is not recommended for life support applica-
tions or applications where malfunctioning could result in
personal injury or property loss. Anyone using this product
for such applications does so at his/her own risk. Precision
Digital Corporation shall not be held liable for damages re-
sulting from such improper use.
Limited Warranty
Precision Digital Corporation warrants this product against defects in material or
workmanship for the specified period under “Specifications” from the date of ship-
ment from the factory. Precision Digital’s liability under this limited warranty shall not
exceed the purchase value, repair, or replacement of the defective unit.
Registered Trademarks
NORYL®and LEXAN®are registered trademarks of SABIC Innovative Plastics. All
other trademarks mentioned in this document are the property of their respective
owners.
© 2016 Precision Digital Corporation. All rights reserved.
www.predig.com
!

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
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Table of Contents
Table of Contents-----------------------------------------3
Table of Figures-------------------------------------------3
Introduction-------------------------------------------------4
Ordering Information ------------------------------------4
Specifications----------------------------------------------5
General ---------------------------------------------------------------5
Process Input-------------------------------------------------------5
Rate/Totalizer-------------------------------------------------------5
Open Collector Output ------------------------------------------6
Solid State Relays ------------------------------------------------6
4-20 mA Transmitter Output-----------------------------------6
Safety Information----------------------------------------7
Installation --------------------------------------------------7
Unpacking -----------------------------------------------------------7
Panel Mounting Instructions ----------------------------------7
Mounting Dimensions-------------------------------------------8
Connections --------------------------------------------------------8
Connectors Labeling--------------------------------------------8
Current Loop (4-20 mA) Connections ----------------------9
Digital Input Connection----------------------------------------9
4-20 mA Output Connections-------------------------------10
Solid State Relay Connections-----------------------------10
Open Collector Outputs --------------------------------------11
Setup and Programming------------------------------ 12
Overview -----------------------------------------------------------12
Front Panel Buttons and Status LED Indicators------12
Display Functions & Messages-----------------------------13
Main Menu---------------------------------------------------------16
Setting Numeric Values --------------------------------------16
Setting Up the Input Signal (INPUT)----------------------17
Available Unit Classes and Units --------------------------18
Setting Custom Units (CUSTM) -----------------------------18
Scaling the 4-20 mA Input----------------------------------- 18
Setting the Display Features (DISPLAY)---------------- 19
Changing the Units (UNITS)-------------------------------- 19
Changing the Decimal Point Location (DEC.PT)-------- 19
Enabling or Disabling the Comma on the Bottom
Display (COMMA) ----------------------------------------------- 19
Programming the Bargraph (PD6624 Only) ------------ 19
Changing What is Displayed (TOP and BOTTOM) ----- 20
Programming the Outputs (OUTPUT) --------------------- 21
Open Collector Outputs (OPEN COLLECTR)----------- 22
Solid State Relay Outputs (RELAY)----------------------- 26
4-20 mA Output (4-20 mA) -------------------------------- 30
Output Control (CONTROL)---------------------------------- 30
Advanced Features Menu (ADVANCED) ------------------ 31
Advanced Rate, Total, and Grand Total Setup (ADV
RATE, TOTAL, GTOTAL)------------------------------------- 31
Low-Flow Cutoff (CUTOFF)---------------------------------- 34
Noise Filter (FILTER) ---------------------------------------- 34
Enabling Password Protection (PASSWRD) ------------- 34
Programmable Function Keys User Menu (USER)---- 35
Changing System Settings (SYSTEM)-------------------- 36
Meter Operation------------------------------------------38
Front Panel Buttons Operation----------------------------- 38
Function Keys Operation------------------------------------- 38
Digital Input Operation---------------------------------------- 38
Maximum/Minimum Readings ------------------------------ 38
Changing Engineering Units-------------------------------- 38
Troubleshooting-----------------------------------------39
Reset Meter to Factory Defaults --------------------------- 39
Determining Software Version ----------------------------- 39
Factory Default Settings ------------------------------------- 40
Troubleshooting Tips------------------------------------------ 41
Table of Figures
Figure 1. 1/8 DIN Panel Cutout Dimensions and Panel
Mounting Details ..................................................... 7
Figure 2. Meter Dimensions - Side View......................... 8
Figure 3. Meter Dimensions - Front View........................ 8
Figure 4. Connector Labeling for Fully Loaded PD6620 . 8
Figure 5. 4-20 mA Input Connection without Backlight.... 9
Figure 6. 4-20 mA Input Connection with Backlight.........9
Figure 7. Digital Input Connections..................................9
Figure 8. 4-20 mA Output Connections..........................10
Figure 9. Solid State Relay Connections .......................10
Figure 10. Open Collector Output Connections.............11

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
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Introduction
The Loop Leader PD6622 and PD6624 are loop-powered, 1/8 DIN flow rate/totalizers designed for de-
manding process control applications. The four front panel buttons make setup and programming of the
meter simple and intuitive. A dual-line display featuring five digits on the top line and eight digits on the
bottom line, preprogrammed engineering units, and optional bargraph display (PD6624) provide a clear
and attractive presentation of the process. The units of measure can be changed as needed (e.g. gal-
lons/second to liters/second) without the need to re-scale the meter.
The dual-line display can be customized by the user to operate in such a way as to satisfy a specific ap-
plication. Typically, the top line is used for the rate while the bottom line is used for the total, grand total,
or engineering units. Three programmable function keys and a digital input come standard and allow the
meter to be customized for use in specialized applications.
All models come equipped with two open collector outputs and are available with two solid state relays
and a 4-20 mA analog output. These outputs can be programmed for alarm indication, signal retransmis-
sion via pulse or analog signal, pump control, and a number of other useful features.
The fact that this meter is loop-powered means that there is no need to run additional, costly power lines;
the meter gets all of the power it needs from the 4-20 mA loop. The Loop Leader loop-powered rate/total-
izer is built in a shallow-depth case with a NEMA 4X/IP65 front and features loop-powered backlighting
and a wide -40 to 167°F (-40 to 75°C) operating temperature range. It doesn't matter if it's indoors or out-
doors, in bright sunlight or a dimly lit plant, or in an area that is wet, dirty, hot, or cold, the Loop Leader
can go just about anywhere.
Ordering Information
Standard Decimal Display Models
PD6622–LNN
Loop-Powered, No Options
PD6622–L2N
Loop-Powered, Two Solid State Relays
PD6622–L3N
Loop-Powered, 4-20 mA Analog Output
PD6622–L5N
Loop-Powered, Two Solid State Relays and 4-20 mA Analog Output
Note: all models come with two open collector outputs standard.
Decimal Display with Bargraph Models
PD6624–LNN
Loop-Powered, No Options
PD6624–L2N
Loop-Powered, Two Solid State Relays
PD6624–L3N
Loop-Powered, 4-20 mA Analog Output
PD6624–L5N
Loop-Powered, Two Solid State Relays and 4-20 mA Analog Output
Note: all models come with two open collector outputs standard.
Enclosures
Model
Meters
Description
Mounting
PDA2407
1
Plastic NEMA 4X Enclosure
Inside Cover
PDA2410
3
Plastic NEMA 4X Enclosure
Inside Cover
PDA2411
2
Plastic NEMA 4X Enclosure
Inside Cover
PDA23XX
1-10
Economical Plastic NEMA 4X Enclosure
Through Door
PDA25XX
1-10
Plastic NEMA 4X Enclosure
Through Door
PDA26XX
1-6
Stainless Steel NEMA 4X Enclosure
Through Door
PDA27XX
1-6
Steel NEMA 4 Enclosure
Through Door
PDA2801*
1
Low-Cost Plastic NEMA 4X Enclosure
Through Cover
PDA2812
2
Low-Cost Plastic NEMA 4X Enclosure
Through Cover
Note: XX = the last two digits of the model number.
Go to www.predig.com to find individual part numbers.

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
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Specifications
Except where noted all specifications apply to operation at +25°C.
General
Display
Top: 0.7” (17.8 mm), Bottom: 0.4” (10.2 mm)
Top: 5 digits -9999 to 99999
Bottom: 8 digits -9,999,999 to 99,999,999
Bottom line separated by commas
Display
Update Rate
Ambient > -10°C: 1 Update/Second
Ambient < -20°C: 1 Update/2 Seconds
Ambient -40°C: 1 Update/10 Seconds
Overrange
Top: 99999; Bottom: 99,999,999 (flashing)
Underrange
Top: -9999; Bottom: -9,999,999 (flashing)
Programming
Method
Front panel
Noise Filter
1, 2, 4, 8, 16 sec.
Noise Filter
Bypass
0.1 to 99.9% FS
Recalibration
Recalibration is recommended at least every
12 months.
Max/Min
Display
Max/min readings reached by the process are
stored until reset by the user or until power to
the meter is turned off.
Password
Programmable password restricts modification
of programmed settings.
Non-Volatile
Memory
All programmed settings are stored in non-vol-
atile memory for a minimum of ten years if
power is lost.
Normal Mode
Rejection
64 dB at 50/60 Hz
Environmental
Operating temperature range: -40 to 75°C
Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing
Connections
Removable screw terminals accept 12 to 22
AWG wire
Enclosure &
Materials
1/8 DIN, high impact plastic, NORYL® Poly-
phenylene Ether & Polystyrene blend (PPE
PS) Resin, UL 94V-0, color: gray
Gasket: Silicone Rubber
Faceplate: LEXAN® Polycarbonate (PC) Film
Buttons: Silicone rubber; Color: black
Mounting
1/8 DIN panel cutout required. Two panel
mounting bracket assemblies provided
Tightening
Torque
Screw terminal connectors: 4.5 lb-in (0.5 Nm)
Mounting screws: 8.0 lb-in max. (0.9 Nm)
Overall
Dimensions
4.68" x 2.45" x 3.79" (119 mm x 62 mm x 96
mm) (W x H x D)
Weight
8.7 oz (247g) w/ option board
Warranty
3 years parts and labor
Process Input
Accuracy
±0.02% of span ±1 count,
Square root and programmable exponent:
10-100% FS
Function
Linear, square root, or programmable expo-
nent
Low-Flow Cutoff
0.0 to 999,999.9
Temperature Drift
25 PPM/C from -40 to 75C ambient
Decimal Point
Up to four decimal places: On top
Up to seven decimal places: On bottom
Calibration
Range
An Error message will appear if input 1 and
input 2 signals are too close together.
Input Range Min Span input 1 & 2
4-20 mA 0.010 mA
Voltage Drop
With backlight off: 1.5 V max
With backlight on: 4.5 V max
Equivalent
Resistance
75 Ω @ 20 mA with backlight off
225 Ω @ 20 mA with backlight on
Input
Overload
Over current protection to 1 A maximum
Rate/Totalizer
Rate Display
Indication
-9999 to 99999, top display
-9,999,999 to 99,999,999, bottom display
Total Display
& Total
Overflow
-9999 to 99999, top display
-9,999,999 to 99,999,999, bottom display
“T” LCD segment shows while displaying total
“G T” LCD segments show for grand total.
(non-bargraph display version only)
Up to 9,999,999,999,999 with 13-digit feature.
Total or grand total flashes and a truncated
value is shown. Press function key assigned to
display (default: F1) to view full number.
Total Decimal
Point
Up to four decimal places: On top
Up to seven decimal places: On bottom
Total decimal point is independent of rate
decimal point.
Totalizer
Calculates total based on rate and rate units
to display total in engineering units. A custom
factor must be programmed if using custom
defined units.
Totalizer
Rollover
Totalizer rolls over when display exceeds
99,999,999 (9,999,999,999,999 if 13-digit limit
enabled). Relay status reflects display.
Total Reset
Via front panel button or external contact clo-
sure on digital input
Total Reset
Password
Total and grand total passwords may be en-
tered to prevent resetting the total or grand
total from the front panel.
Non-Resettable
Total
Total and grand total reset may be disabled
through the meter interface. Grand total reset
may be permanently disabled by selecting
YES at the PERMLOCK menu. Once the grand
total reset has been permanently disabled, it
cannot be enabled.

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
6
Open Collector Output
Rating
Two NPN, Isolated open collector, 30 VDC @
90 mA maximum
Output
Assignment
Pulse, Alarm, Timer, Total Reset, or Disable
Pulse Output
Source
Rate, Total, Grand Total, or Test Frequency
Pulse Output
Factor
0.000001 to 999,999.9
Pulse Width
2 ms; 50% duty cycle
Pulse Output
Frequency
250 Hz maximum
Quadrature Pulse
Output
Available for Output 2 (90° behind Output 1)
Alarm Output
Source
Assign to Rate, Total, Grand Total or Digital
Input
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user programmable
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each output
Alarm Operation
Auto, Auto-man, Latch, Latch w/clear
Alarm Indication
Red backlight, Flashing display, Alarm Mes-
sage, Alarm symbol (!)
Alarm Message
On or Off; User programmable, 8 characters
maximum
Displayed every 10 sec for 1 sec on bottom
Alarm
Acknowledge
Front panel ACK button or external digital in-
put resets output and screen indication
Auto Initialization
When power is applied to the meter, relays
will reflect the state of the input to the meter
Timer Output
One-shot or Continuous
Off Time Delay: 1 sec to 99:59:59
(hrs:min:sec)
On Time: 1 sec to 99:59:59 (hrs:min:sec)
Timer Start/Stop
Front panel or digital input, user selectable
Solid State Relays
Rating
Resistive Load: 250 VAC/DC @ 1 Amp
Inductive Load: 1/10 HP @ 125/250 VAC/DC
Noise
Suppression
Metal oxide varistors across outputs
Relay
Assignment
Alarm, Timer, Batch Control, Sample, or Disa-
ble
Alarm Output
Source
Assign to Rate, Total, Grand Total, or Digital
Input
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user programmable
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each relay
Alarm Operation
Auto, Auto-man, Latch, Latch w/clear
Alarm Indication
Red backlight, Flashing display,
Alarm Message, Alarm symbol (!)
Alarm Message
On or Off; User programmable, 8 characters
maximum. Displayed every 10 sec for 1 sec
on bottom
Alarm
Acknowledge
Front panel ACK button or external digital in-
put resets output and screen indication
Auto Initialization
When power is applied to the meter, relays
will reflect the state of the input to the meter
Timer Output
One-shot or Continuous
Off Time Delay: 1 sec to 99:59:59
(hrs:min:sec)
On Time: 1 sec to 99:59:59 (hrs:min:sec)
Timer Start/Stop
Front panel or digital input, user selectable
4-20 mA Transmitter Output
Output Source
Rate, total, re-transmit; reverse scaling
allowed
Scaling Range
1.00 to 23.0 mA
Disable
High impedance state, less than 1 mA
Calibration
Factory calibrated 4.00 to 20.00 mA
Underrange
1.0 mA, 3.5 mA, or 3.8 mA (If input < 3.5 mA);
or Off; user selectable
Overrange
20.5 mA, 20.8 mA, or 23.0 mA (If input > 20.5
mA); or Off; user selectable
Isolation
500 V
Accuracy
±0.05% FS ±0.001mA
Temperature Drift
0.5 µA/°C max from -40 to 75°C ambient
External Loop
Power Supply
7.0VDC to 30.0VDCmaximum
Output Loop
Resistance
10-750 Ω @ 24 VDC; 100-1100 Ω @ 30 VDC

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
7
Safety Information
CAUTION: Read complete in-
structions prior to installation
and operation of the meter.
WARNING: Risk of electric
shock or personal injury.
Warning!
Hazardous voltages exist within enclosure.
Installation and service should be performed
only by trained service personnel.
Installation
There is no need to remove the meter from its case to complete the installation, wiring, and setup of
the meter for most applications.
Unpacking
Remove the meter from box. Inspect the packaging and contents for damage. Report damages, if
any, to the carrier.
If any part is missing or the meter malfunctions, please contact your supplier or the factory for assis-
tance.
Panel Mounting Instructions
Prepare a standard 1/8 DIN panel cutout –3.622" x 1.772" (92 mm x 45 mm). Refer to Figure 1 be-
low, for more details.
Clearance: allow at least 4.0" (102 mm) behind the panel for wiring.
Panel thickness: 0.04" - 0.25" (1.0 mm - 6.4 mm).
Recommended minimum panel thickness to maintain Type 4X rating: 0.06" (1.5 mm) steel panel,
0.16" (4.1 mm) plastic panel.
Remove the two mounting brackets provided with the meter (back-off the two screws so that there is ¼"
(6.4 mm) or less through the bracket. Slide the bracket toward the front of the case and remove).
Insert meter into the panel cutout.
Install mounting brackets and tighten the screws against the panel. To achieve a proper seal, tighten
the mounting bracket screws evenly until meter is snug to the panel along its short side. DO NOT
OVER TIGHTEN, as the rear of the panel may be damaged.
Figure 1. 1/8 DIN Panel Cutout Dimensions and Panel Mounting Details
!

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
8
Mounting Dimensions
Figure 2. Meter Dimensions - Side View
Figure 3. Meter Dimensions - Front View
Connections
All connections are made to removable screw terminal connectors located at the rear of the meter.
Use copper wire with 60°C or 60/75°C insulation for all line
voltage connections. Observe all safety regulations. Electrical
wiring should be performed in accordance with all applicable
national, state, and local codes to prevent damage to the me-
ter and ensure personnel safety.
Connectors Labeling
The connectors’ label, affixed to the meter, shows the location of all connectors available with requested
configuration.
Figure 4. Connector Labeling for Fully Loaded PD6620
1.76"
(45mm)
0.59"
(15mm) 3.2"
(81mm)
2.45"
(62mm)
3.6"
(91mm)

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
9
Current Loop (4-20 mA) Connections
Signal connections are made to a six-terminal connector labeled SIGNAL on Figure 4. The following fig-
ures show a 4-20 mA current loop connected to the meter. The first figure shows the connection without
the backlight and the second shows the connection with the backlight (the backlight may also be disa-
bled/enabled in the SYSTEM menu). The meter is powered by the 4-20 mA current loop.
There are no switches or jumpers to set up for the input. Setup and programming is performed through
the front panel buttons.
Figure 5. 4-20 mA Input Connection without Backlight
Figure 6. 4-20 mA Input Connection with Backlight
The current input is protected against current overload up to 1 amp. The display may or may not show a
fault condition depending on the nature of the overload.
Digital Input Connection
A digital input is standard on the meter. This digital input is connected with a normally open contact
across DI+ and DI-, or with an active low signal applied to DI+ and DI-.
Figure 7. Digital Input Connections
DI+ DI- mA- mA+ BL-X
DI+ DI- mA- mA+ BL-X
DI+ DI- mA- mA+ BL-X

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
10
4-20 mA Output Connections
Connections for the 4-20 mA transmitter output are made to the connector terminals labeled MA OUT.
The 4-20 mA output must be powered from an external power supply.
Figure 8. 4-20 mA Output Connections
Solid State Relay Connections
Relay connections are made to two-terminal connectors labeled SSR1 and SSR2 in Figure 4. Each re-
lay’s C terminal is common only to the normally open (NO) contact of the corresponding relay.
Figure 9. Solid State Relay Connections
I+ I-
CNO CNO
Internal
Load Load

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
11
Open Collector Outputs
Open collector output 1 and 2 connections are made to terminals labeled O1+ and O1-, and O2+
and O2-. Connect the alarm or pulse input device as shown below.
Figure 10. Open Collector Output Connections
O1+ O1- O2+ O2-

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
12
Setup and Programming
The meter is factory calibrated prior to shipment to read in
milliamps. The calibration equipment is certified to NIST standards.
Overview
There are no jumpers to set; setup and programming is done through the front panel buttons.
The meter may be powered via the micro-USB connection located on the right side of the meter for the
purposes of programming only. The backlight will not work while the meter is powered via the USB con-
nection.
Front Panel Buttons and Status LED Indicators
PD6622 PD6624
Button
Symbol
Description
LCD
Status
Menu
!
Alarm Indicator
(PD6622 Only)
Right-Arrow/F1
Password Protection
Indicator
(PD6622 Only)
Up-Arrow/F2
G
Grand Total Indicator
(PD6622 Only)
Enter/F3
T
Total Indicator
(PD6622 Only)
Press the Menu button to enter or exit the Programming Mode at any time.
Press or hold the Right-Arrow button to scroll forward through the menus, select digits during nu-
meric programing, select characters during text programming, or decrement the value of a digit or
character selected with the Up-Arrow button.
Press and hold the Right-Arrow button to zero or clear digits/characters while in data-entry mode.
Press or hold the Up-Arrow button to scroll backwards through the menus or to increment the value
of a digit or character.
Press the Enter button to access a menu or to accept a setting or programmed digit/character value.

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
13
Display Functions & Messages
The meter displays various functions and messages during setup, programming, and operation. The following table
shows the main menu functions and messages in the order they appear in the menu.
Parameter
Action/Setting Description
INPUT
Program the meter 4-20 mA input
SCALE RATE
Scale the rate input
UNITS
Select the display units
/SECOND
Units per second
/MINUTE
Units per minute
/HOUR
Units per hour
/DAY
Units per day
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)
CUSTM/(T)
Custom unit per time unit (T)
INPUT 1
Program input 1 value
INP 1
Enter the input 1 value
DISP 1
Program display 1 value
DSP 1
Enter the display 1 value
INPUT 2
Program input 2 value (up to 32
points)
INP 2
Enter the input 2 value
DISP 2
Program display 2 value (up to 32
points)
DSP 2
Enter the display 2 value
SAVE?
Save programmed units, input,
and display values
OUTPUT
Program the meter’s available out-
puts
OPEN COLLECTR
Program the meter’s open collec-
tor outputs
OUTPUT1
Open collector 1 setup
OUTPUT2
Open collector 2 setup
DISABLE
Disable the open collector
PULSE
Program the open collector for
pulse output
ALARM
Program the open collector for
alarm output
TIMER
Program the open collector as a
timer
Parameter
Action/Setting Description
TOT RST
Program the open collector for to-
tal reset
RELAY
Program the meter’s relay outputs
OUTPUT1
Relay 1 setup
OUTPUT2
Relay 2 setup
DISABLE
Disable the relay
ALARM
Program relay for alarm functional-
ity
SAMPLE
Program relay for sample function-
ality
TIMER
Program relay as a timer
BATCH
Program the relay for batch control
functionality
INFO
View relay run time and cycle
count
4-20 mA
Program the meter’s 4-20 mA out-
put
RATE
Transmit a value based on the rate
display
TOTAL
Transmit a value based on the to-
tal display
RETRANS
Retransmit the 4-20 mA input sig-
nal
DISABLE
Disable the 4-20 mA output
CONTROL
Program manual or automatic op-
eration for the outputs
OC1
Open collector 1
OC2
Open collector 2
RELAY1
Relay 1
RELAY2
Relay 2
4-20 mA
4-20 mA output
AUTO
Set selected output to automatic
operation
MANUAL
Manually control selected output
operation
ADVANCED
Program the meter’s advanced
features
RATE
Advanced 4-20 mA rate input pro-
gramming
FUNCTION
Select linear, square root, or pro-
grammable exponent function
LINEAR
Set meter for linear function and
select number of linearization
points
SQROOT
Set meter for square root extrac-
tion
EXPONENT
Set meter for programmable expo-
nent and enter exponent value
SCALE.CAL
Scale or calibrate the 4-20 mA in-
put
SCALE RATE
Scale the rate 4-20 mA input
CAL RATE
Calibrate the rate 4-20 mA input

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
14
Parameter
Action/Setting Description
TOTAL
Advanced total programming
COUNT
Program the totalizer functionality
LIMIT
Set the number of digits used for
the total
8-DIGIT
Eight digits max (99999999)
13-DIGIT
Thirteen digits max
(9999999999999) (Requires top
line to display entire number, total
will flash when number overflows
to top line)
INITIAL
Set the total to start at a specific
number
RESET
Enable or disable the ability to re-
set the total
ENABLE
Enable total reset (default)
DISABLE
Disable total reset
GTOTAL
Advanced grand total program-
ming
COUNT
Program the totalizer functionality
LIMIT
Set the number of digits used for
the total
8-DIGIT
Eight digits max (99999999)
13-DIGIT
Thirteen digits max
(9999999999999) (Requires top
line to display entire number, total
will flash when number overflows
to top line)
INITIAL
Set the total to start at a specific
number
RESET
Enable or disable the ability to re-
set the grand total
ENABLE
Enable grand total reset (default)
DISABLE
Disable grand total reset
CUTOFF
Set low-flow cutoff
DISABLE
Disable low-flow cutoff
ENABLE
Enable low-flow cutoff
FILTER
Set noise filter value
2.0 SEC
2 seconds
4.0 SEC
4 seconds
8.0 SEC
8 seconds
16.0 SEC
16 seconds
OFF
Turn filter off
1.0 SEC
1 second
PASSWRD
Set a password for the meter
MAIN
Program the main meter password
TOTAL
Program the total reset password
GTOTAL
Program the grand total reset
password
USER
Assign function keys and digital in-
put
F1
Assign F1 function key
F2
Assign F2 function key
F3
Assign F3 function key
Parameter
Action/Setting Description
DI
Assign digital input
DISP FN
Set the function key or digital input
to display a value
DISPLAY
Cycle max, min, rate, total, and
grand total
D RATE
Display the rate
D TOTAL
Display the total
DISP GT
Display the grand total
PCT.RATE
Display the rate’s percentage of
max (20 mA)
D UNITS
Display the rate, total, and grand
total units
D TAG
Display the tags
DISPMIN
Display the minimum rate value
DISPMAX
Display the maximum rate value
MIN MAX
Display the minimum and maxi-
mum rate value
D mA IN
Display the current mA input value
D mAOUT
Display the current mA output
value
MENU FN
Set the function key or digital input
to access a menu
RLYINFO
Go to relay information menu
(INFO)
MANCTRL
Go to output control menu (CON-
TROL)
TIMER.FN
Set the function key or digital input
to start or stop a timer
STRT.ALL
Start all timers
STOP.ALL
Stop all timers
S.STP.ALL
Start or stop all timers
OC1
Start/stop open collector 1 timer
OC2
Start/stop open collector 2 timer
RLY1
Start/stop relay 1 timer
RLY2
Start/stop relay 2 timer
START
Start the selected timer output
STOP
Stop the selected timer output
STR-STP
Start or stop the selected timer
output
BATCH.FN
Set the function key or digital input
to batch control
START
Start a batch
STOP
Stop a batch
STR-STP
Start or stop a batch
PRESET
Preset batch amount
ALARM.FN
Set the function key or digital input
to acknowledge an alarm
ACK
Acknowledge all active alarms
HOLD FN
Set the function key or digital input
to hold an output
HOLD.OUT
Hold all outputs
HLD.UNHLD
Hold or un-hold all outputs

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
15
Parameter
Action/Setting Description
OC1+2
Hold/un-hold open collector out-
puts
RLY1+2
Hold/un-hold relay outputs
mAOUT
Hold/un-hold 4-20 mA output
HOLD
Hold selected output
HLD.UNHLD
Hold or un-hold selected output
DISABLE
Disable the function key or digital
input
RST FN
Set the function key or digital input
to reset a value
RESET
Reset min, max, or max/min PV
value
R MIN.MAX
Reset max and min PV value
RST T
Reset the total
RST GT
Reset the grand total
RST T.GT
Reset the total and grand total
HINT
Display hint text on first key press
and execute action on second key
press
OFF
Turn the hint function off
ON
Turn the hint function on
SYSTEM
Program system settings
AOUTCAL
Calibrate the analog output
DEFAULT
Reset meter to factory defaults
TOTAL
Enable or disable the totalizer
ENABLE
Enable the totalizer (Default)
DISABLE
Disable the totalizer (see PD6602
manual)
BACKLITE
Enable or disable the display back-
light
ENABLE
Enable the backlight (default)
DISABLE
Disable the backlight
INFO
View meter software, version, and
model, and change the meter iden-
tifier tag
SFT
The software ID number
VER
The software version
MODEL
The meter hardware model num-
ber
ID.TAG
The meter identifier tag
Press Enter to edit tag
ICAL
Internal calibration used for scaling
DISPLAY
Program the meter’s display
UNITS
Change the display units within the
selected unit class
DEC.PT
Change the decimal point location
RATE
Program the rate decimal point
TOTAL
Program the total decimal point
GTOTAL
Program the grand total decimal
point
Parameter
Action/Setting Description
COMMA
Enable or disable the use of a
comma to separate the thousands
place on the bottom display
ENABLE
Enable comma (default)
DISABLE
Disable comma
TOP
Set what to display on the top line
RATE
Display the rate
RATE+U
Display the rate and its units alter-
nating
TOTAL
Display the total
TOTAL+U
Display the total and its units alter-
nating
TAG
Display the tag
UNITS
Display the units
PRESET
Display the preset value
BOTTOM
Set what to display on the bottom
line
TOTAL
Display the total
TOTAL+U
Display the total and its units alter-
nating
TOT+TAG
Display the total and its tag alter-
nating
T+U+RU
Display the total, its units, and the
rate units alternating
GTOTAL
Display the grand total
GT+UNITS
Display the grand total and its
units alternating
GT+TAG
Display the grand total and its tag
alternating
GT+U+RU
Display the grand total, units, and
rate units alternating
RATE
Display the rate
RATE+TU
Display the rate and the total’s
units alternating
RATE+U
Display the rate and its units alter-
nating
RATE+TAG
Display the rate and its tag alter-
nating
R UNITS
Display the rate units
T UNITS
Display the total units
TAG
Display the tag
UNITS
Display the units
PRESET
Display the preset value
TAG+RU
Display the tag and rate units alter-
nating
TAG+TU
Display the tag and total units al-
ternating
OFF
Disable the bottom display
R PCT
Display the rates percentage of
max (20 mA)
ma IN
Display the current mA input value
mA OUT
Display the current mA output
value

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
16
Main Menu
The main menu consists of all the meter’s programmable functions: Input, Output, Advanced, and Dis-
play.
Press Menu button to enter Pro-
gramming Mode then press the
Right-Arrow button to move for-
ward through the menu and the
Up-Arrow button to move back.
Press Menu at any time to exit and
return to Run Mode. Changes
made to settings prior to pressing
Enter are not saved.
Changes to the settings are saved
to memory only after pressing En-
ter/F3 to confirm the setting or
pressing Enter/F3 at the SAVE?
screen when available.
Setting Numeric Values
The numeric values are set using the Right and Up-Arrow buttons. Press Right-Arrow to select next
digit and Up-Arrow to increment digit value. The selected digit will flash.
Press and hold Up-Arrow to auto-increment the display value. If you have made a mistake or would like
to enter a new value, select the left-most digit and press and hold the Right-Arrow button until all digits
reset to zero.
Press the Enter button at any time to accept a setting or Menu button to exit without saving changes.
Note: the underscore in the graphic below is provided to show which digit would be flashing.
DSP 1
+00,000.00 DSP 1 00,000.00
Select
Digit to
Change
DSP 1
00,050.00
Increment
Selected
Digit
SCALE
INPUT 1
Accept
Setting
52.86
38,418.2
SETUP
INPUT SETUP OUTPUT SETUP ADVANCED SETUP DISPLAY
SCALE
RATE OPEN COLLECTR ADV
RATE DSPLY
UNITS
OUT
RELAY
OUT
4-20 mA
OUT
CONTROL CUTOFF
FILTER
PASSWRD
USER
SYSTEM
DSPLY
DEC.PT
DSPLY
COMMA
DSPLY
TOP
DSPLY
DOTTOM
SCALE
UNITS
SCALE
INPUT 1
SCALE
DISP 1
SCALE
INPUT 2
SCALE
DISP 2
SAVE?
ADV
TOTAL
ADV
GTOTAL
Run Mode

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
17
Setting Up the Input Signal (INPUT)
It is very important to read the following information, before proceeding to program the meter:
The meter is factory calibrated prior to shipment to display 0-100 gal/s, which corresponds to the 4-20
mA input. The calibration equipment is certified to NIST standards.
A calibrated signal source is not needed to scale the meter.
Enter the Input menu to scale the meter to display the 4-20 mA input. The input is capable of accepting
any signal from 4 to 20 mA.
SETUP
INPUT
SCALE
RATE SCALE
UNITS
SCALE
INPUT 1
SCALE
DISP 1
TIME
/SECOND
UNIT
GAL/S
/SECOND
/MINUTE
/HOUR
/DAY
Rate Time
Bases
INP 1
04.000
INP 1
mA
Flashes Units
Momentarily
DSP 1
+00,000.00 SCALE INPUT 2 INP 2 20.000
SCALE
DISP 2 DSP 2 +00,100.00 SAVE? SETUP INPUT
GAL/(T)
L/(T)
IGAL/(T)
Rate Units
M3/(T)
BBL/(T)
BUSH/(T)
cuYD/(T)
cuFt/(T)
cuIn/(T)
LiBBL/(T)
BBBL/(T)
HECtL/(T)
AF/(T)
CUSTM/(T)

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
18
Available Unit Classes and Units
The meter has six available preprogrammed unit classes, volume, height, temperature, pressure, weight,
and rate. Each unit class has the following 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)
CUSTM/(T)
Custom unit per time unit (T)
Setting Custom Units (CUSTM)
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 32.
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

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
19
Setting the Display Features (DISPLAY)
The meter’s display functions may be programmed using the Display menu. This menu consists of the
following submenus: Units, Decimal Point, Comma, Bargraph (PD6624 Only), Top, and Bottom.
Changing the Units (UNITS)
It is possible to change the display units without the need to re-scale the meter. When selecting a new
unit from within the DISPLAY menu (e.g. changing from gallons/sec. (GAL/s) to liters/sec. (L/s)), the
meter will automatically convert the display values to display the new unit. Enter the UNITS menu, select
a new unit of measure from the list of predefined units, and press the Enter button. If entering a custom
unit (CUSTM), a custom conversion factor will need to be entered.
Changing the Decimal Point Location (DEC.PT)
The decimal point may be set with up to seven decimal places or with no decimal point at all.
Pressing the Right Arrow moves the decimal point one place to the right until no decimal point is dis-
played, and then it moves to the leftmost position. Pressing the Up-Arrow moves the decimal point one
place to the left.
The decimal point location is set independently for the rate, total and grand total.
Enabling or Disabling the Comma on the Bottom Display (COMMA)
The bottom display is set to show a comma separating the thousands and millions place by default if a
numeric value is being displayed. This feature can be disabled or enabled using the Comma menu.
Programming the Bargraph (PD6624 Only)
The PD6624 comes equipped with a bargraph display for applications where a visual representation of
the rate, or total’s percentage of full scale is desirable. This feature can be changed to represent either
rate or total, or disabled, using the Bargraph menu (BARGRAPH). If the bargraph is set to represent total,
the total full scale will need to be set.
DEC.PT
222222.22 DEC.PT 1111111.1
Move Decimal
to the Right
DEC.PT
222222.22 DSPLY COMMA
Accept
Decimal
Location
DEC.PT
RATE
Move Decimal
to the Left
DSPLY
BARGRAPH GRAPH RATE GRAPH TOTAL GRAPH
OFF
SETUP
DISPLAY
DSPLY
UNITS DSPLY DEC.PT DSPLY COMMA DSPLY TOP DSPLY
DOTTOM
DSPLY
BARGRAPH
PD6624 Only

Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
20
Changing What is Displayed (TOP and BOTTOM)
The two display lines (Top and Bottom) can be programmed to display different values. Use the Top and
Bottom menus to make these changes. If PV2 is enabled, additional options will be available for display-
ing the second PV on the bottom display.
The top display (TOP) can display:
Rate
Rate and its units alternating
Total
Total and its units alternating
Tag
Units
Preset batch value
The bottom display (BOTTOM) can display:
Total (with units or tag alternating)
Total, its units, and the rate units alternating
Grand total (with units or tag alternating)
Grand total, units, and rate units alternating
Rate (with units or tag alternating)
Rate and the total’s units alternating
Rate or total units
Tag
Units
Preset batch value
Tag and rate units alternating
Tag and total units alternating
Nothing
Rate's percentage of max scale
mA input value
mA output value
DSPLY
TOP
DSPLY
DOTTOM
DSPLY
RATE DSPLY
RATE+U DSPLY
TOTAL DSPLY
TOTAL+U
DSPLY
TAG
DSPLY
PRESET DSPLY
UNITS
DSPLY
TOTAL DSPLY
TOTAL+U DSPLY
TOT+TAG DSPLY
T+U+TAG DSPLY
GTOTAL DSPLY
GT+UNITS
DSPLY
GT+TAG
DSPLY
RATE DSPLY
GT+U+RU
DSPLY
RATE+U DSPLY
RATE+TU
DSPLY
RATE+TAG DSPLY
R UNITS DSPLY
T UNITS DSPLY
TAG DSPLY
UNITS
DSPLY
PRESET
DSPLY
TAG+TU DSPLY
TAG+RU
DSPLY
R PCT DSPLY
OFF
DSPLY
mA OUT
DSPLY
mA IN