Precision Digital Corporation Loop Leader PD6600 Series User manual

PD6600 Series Loop-Powered Process Meters
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•1/8 DIN Loop-Powered Process Meters with NEMA 4X, IP65 Front
•4-20 mA Input Displayed with ±0.02% FS Accuracy
•1.5 Volt Drop (4.5 Volt Drop with Backlight)
•0.7" (17.8 mm) 5 Alphanumeric Characters Top Display
•0.4" (10.2 mm) 8 Alphanumeric Characters Bottom Display
•20-Segment Bargraph with Numeric Percent Indication, Optional
•Shallow Depth Case Extends Only 3.6" (91 mm) Behind Panel
•(2) Open Collector Outputs Standard; Assigned to Pulse, Alarm, Timer, or Stopwatch
•(2) Optional Loop-Powered Solid State Relays; Assigned to Alarm, Control, Timer, or Stopwatch
•Stopwatch & TimerFunctions to Drive Relays & Open Collectors
•Optional Isolated 4-20 mA Analog Output
•Relay Pump Alternation Based on Level and Runtime
•Display Relay Runtime & Cycle Count via Relay Info Menu
•Round Horizontal Tank Function; Just Enter Diameter & Length
•32-Point Linearization, Square Root Extraction and Programmable Exponent Function
•Free PC-Based MeterView XL USB Programming Software
•HART®Protocol Transparent
•Loop-Powered Backlight with Red Backlight for Alarm Conditions
•Safe Area Operating Temperature Range: -40 to 167°F (-40 to 75°C)
•Conformal Coated PCBs for Dust & Humidity Protection
•Password Protection
•UL & C-UL 61010 Listed for Electrical Safety
•UL & C-UL Listed as Intrinsically Safe and Nonincendive
•ATEX and IECEx Certified as Intrinsically Safe
•Wide Assortment of NEMA 4X Enclosures for up to Ten Meters
•Light / Horn & Reset Button Accessory
•Control Station Accessory for Remote Operation of Digital Input
•3-Year Warranty
PD6606 & PD6608 Only
IECEx
All Models

PD6600 Series Loop-Powered Process Meters
Instruction Manual
2
Table of Contents
Introduction......................................................................................................... 4
Key Features....................................................................................................... 5
Ordering Information.......................................................................................... 8
General Purpose Instruments....................................................................... 8
Hazardous Area Instruments ........................................................................ 8
Enclosures...................................................................................................... 8
Accessories.................................................................................................... 8
Specifications................................................................................................... 11
Display .......................................................................................................... 11
General.......................................................................................................... 11
Input .............................................................................................................. 11
Common Open Collector & Relay (Alarm) Specifications ........................ 12
Open Collector Outputs............................................................................... 12
Solid State Relays........................................................................................ 12
4-20 mA Transmitter Output........................................................................ 12
On-Board Digital Input................................................................................. 12
MeterView XL Programming Software........................................................ 13
General Compliance Information.................................................................... 13
Electromagnetic Compatibility.................................................................... 13
PD6606 & PD6608 Compliance Information................................................... 14
Safety ............................................................................................................ 14
Hazardous Area Approvals ......................................................................... 14
EU Declaration of Conformity............................................................................. 15
Safety Information............................................................................................ 15
Installation......................................................................................................... 16
Unpacking..................................................................................................... 16
Panel Mounting Instructions....................................................................... 16
MeterView XL Programming Software........................................................ 17
MeterView XL Software Installation ........................................................... 17
Connecting to the Computer...................................................................... 18
Specifications............................................................................................. 18
Dimensions....................................................................................................... 19
Connections...................................................................................................... 19
Connectors Labeling.................................................................................. 19
Wiring Diagrams............................................................................................... 20
Safe Area Current Loop (4-20 mA) Connections ....................................... 20
Safe Area Digital Input Connection............................................................ 20
Safe Area 4-20 mA Output Connections.................................................... 20
Safe Area Solid State Relay Connections.................................................. 20
Safe Area Open Collector Outputs............................................................. 20
Remote Operation of Meter........................................................................ 21
Wiring Connections for MOD-LH Models................................................... 21
Setup and Programming.................................................................................. 22
Overview....................................................................................................... 22
MeterView XL Programming Software........................................................ 22
Front Panel Buttons and Status LCD Indicators ....................................... 22
Display Functions & Messages................................................................... 23
Main Menu..................................................................................................... 27
Setting Numeric Values ............................................................................. 27
Scaling the 4-20 mA Input (INPUT).................................................................. 27
Available Unit Classes and Units............................................................... 28
Setting Custom Units (CUSTOM)................................................................. 28

PD6600 Series Loop-Powered Process Meters
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Setting the Display Features (DISPLAY).................................................... 29
Changing the Engineering Units (UNITS).................................................. 29
Changing the Decimal Point (DEC.PT)........................................................ 29
Enabling or Disabling Commas on the Bottom Display (COMMA) ............... 29
Display Capabilities Optimization (TOP and BOTTOM)................................ 29
Configuring the Display (TOp and BOTTOM)............................................... 30
Programming the Bargraph (BARGRAPH) (PD6604 & PD6608 Only)......... 30
Programming the Outputs (OUTPUT).......................................................... 31
Open Collector Outputs ( OPEN COLLECTR ) ................................................ 31
Solid State Relay Outputs (RELAY) ........................................................... 34
Isolated 4-20 mA Output (4-20 mA)......................................................... 37
Output Manual Control (CONTROL)............................................................ 37
Advanced Features Menu (ADVANCED)....................................................... 38
Advanced Process Variable Setup (ADV PV SETUP)............................... 38
Low-Flow Cutoff (CUTOFF) ........................................................................ 41
Noise Filter (FILTER)................................................................................ 42
Enabling Password Protection (PASSWRD)................................................ 42
Programmable Function Keys User Menu (USER)..................................... 42
Tare (TARE)............................................................................................... 42
Changing System Settings (SYSTEM)........................................................ 44
Meter Operation................................................................................................ 46
Front Panel Buttons Operation................................................................... 46
Function Keys Operation............................................................................. 46
Digital Input Operation................................................................................. 46
Maximum/Minimum Readings..................................................................... 46
Runtime & Cycle Count (INFO)................................................................... 47
Changing Engineering Units....................................................................... 47
Troubleshooting............................................................................................... 48
Reset Meter to Factory Defaults.................................................................. 48
Determining Software Version.................................................................... 48
Factory Default Settings............................................................................. 49
Troubleshooting Tips................................................................................... 50
Table of Figures
Figure 1. 1/8 DIN Panel Cutout Dimensions................................................... 16
Figure 2. Panel Mounting Details .................................................................... 16
Figure 3. Meter Dimensions - Side View......................................................... 19
Figure 4. Meter Dimensions - Front View ....................................................... 19
Figure 5. Connector Labeling for PD660#-LNN.............................................. 19
Figure 6. Connector Labeling for PD660#-L2N with 2-Solid State Relays... 19
Figure 7. Connector Labeling for PD660#-L3N with 4-20 mA Output........... 19
Figure 8. Connector Labeling for PD660#-L5N with 2 Solid State Relays
& 4-20 mA Output............................................................................. 19
Figure 9. 4-20 mA Input Connection without Backlight ................................ 20
Figure 10. 4-20 mA Input Connection with Backlight.................................... 20
Figure 11. Digital Input Connections .............................................................. 20
Figure 12. 4-20 mA Output Connections ........................................................ 20
Figure 13. Solid State Relay Connections...................................................... 20
Figure 14. Open Collector Output Connections............................................. 20
Figure 15. PDA2361-R Control Station Connected to PD6604...................... 21
Figure 16. Light / Horn and Button (MOD-LH) Connected to PD6604.......... 21

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Disclaimer
The information contained in this document is
subject to change without notice. Precision Digital
Corporation 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.
•Read complete instructions prior to installation
and operation of the meter.
•Risk of electric shock or personal injury.
•This product is not recommended for life support
applications 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
resulting from such improper use.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Limited Warranty
Precision Digital Corporation warrants this
product against defects in material or
workmanship for the specified period under
“Specifications” from the date of shipment from
the factory. Precision Digital’s liability under this
limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.
Registered Trademarks
All trademarks mentioned in this document are
the property of their respective owners.
© 2022 Precision Digital Corporation.
All rights reserved.
Introduction
These loop-powered 1/8 DIN digital panel meters can
be installed virtually anywhere to provide convenient
and informative display of any 4-20 mA signal. One of
the most convenient features of these instruments is
their dual line display which is typically used to display
the process variable on the 5-digit alphanumeric top
display and the units of measure or a tag on the 8-
digit alphanumeric bottom display. Another common
setup is to display the input in one scale on the top
display (such as feet) and in another scale on the bot-
tom display (such as gallons). Both display lines use
14-segment, alphanumeric characters for clear indica-
tion of tags, units, or alarm messages.
Further enhancing the display on these instruments is
a 20-segment bargraph available on the PD6604 and
PD6608 that also includes a numeric value of the per-
centage the bargraph represents.
These loop-powered meters can be installed virtually
anywhere because they get their power from the
4-20 mA loop and therefore require no separate
power source. And they only drop 1.5 V (4.5 V with
backlight), so they add very little burden to the loop.
Additional features that allow these instruments to be
installed virtually anywhere include a NEMA 4X, IP65
front panel, an operating temperature range of
-40 to 167°F (-40 to 75°C) (for safe area products),
conformally coated PCBs, and a backlit LCD that can
be read in bright sunlight or dimly lit areas. Finally,
there are intrinsically safe and nonincendive versions
of these instruments that can be installed in hazard-
ous areas.
Free, PC-based, MeterView XL software that con-
nects to the meter via a micro USB cable is available
for programming and setup of the meters. For more
details, see the LIM6602MVXL manual.
All models come equipped with two open collector
outputs and a digital input. There are also models
available with two solid state relays and isolated
4-20 mA analog output options. The open collector
outputs are useful for alarm indication. The digital
input can be used to acknowledge the relays, to
start/stop a timer/stopwatch, and more. The relays
can be programmed for alarm indication, on/off
control, or pump alternation.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Key Features
Informative Display
The Loop Leader’s display provides multiple ways to
help users understand and keep track of their
processes. The most obvious is the dual line which
typically allows the user to display a numeric value of
the process variable on the top line and units and/or a
tag on the bottom line. An optional bargraph that
includes a numeric value of the percentage the
bargraph represents is also available.
Predefined display units give users even more display
flexibility. Plus, the high contrast backlit LCD display
is readable from far away and under various lighting
conditions.
Alarm Indication
When an alarm occurs, the Loop Leader's display
can be programmed to turn red. It may also be set
up to flash an alarm message along with the process
variable. The flashing red alarm message can be
activated even if no relay or open collector is
connected.
Dual-Scale Feature
Users can use the dual-scale feature to display
the input in two different scales. For instance, the
example above shows an application where the
display shows the input in feet and gallons while the
display toggles between process values and units.
14-Segment Characters
Notice how much better letters like “T”, “N” and “K”
appear as 14-segment characters on the Loop Leader
vs 7-segment characters found on many other meters.
Predefined and Custom Units
The meter has six available preprogrammed unit
classes: volume, height, temperature, pressure,
weight, and rate. When the desired unit class or unit
of measure within a class is not available, a custom
unit may be programmed.
Password Protection
A password can be set up for programming security to
prevent unauthorized changes to the programmed
parameter settings.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
6
Multiple Outputs
•Two open collector outputs (standard)
•Two solid state relays (optional)
•One 4-20 mA output (optional)
The open collector outputs and relays generally
operate in the same manner, with the major exception
being the open collectors are not available for pump
alternation and the relays are not available with pulse
features. The open collectors and relays can be
controlled either automatically or manually.
The isolated analog output signal can be configured
to represent the process variable (PV1, PV2, or
retransmit). It can also be reverse scaled such that
the meter’s high calibration value outputs 4 mA and
the meter’s low calibration outputs 20 mA.
Pump Alternation (ALTERN)
For pump control applications where two similar
pumps are used to control the level of a tank or a well,
it may be desirable to have the pumps operate alter-
nately. This prevents excessive wear and overheating
of one pump over the lack of use of the other pump.
Pump alternation uses both relays in tandem to alter-
nate between two similar pumps. The ALTERN menu
is only available under Output 1 and will automatically
set Output 2 to pump alternation as well.
Pump Alternation Example
The following is an example application where the re-
lays are programmed for pump alternation.
On & Off Point Programming
Relay
On Point
Off Point
Function
1
7000
1000
Controls backup pump
2
6000
1000
Controls main pump
The following graphics provide a visual representation
of a typical pump alternation application:
Note: Open Collectors can be used for high and low
alarm indication.
6245
GAL !
6245
GAL !
7153
GAL !
995
GAL
Relay #2 turns the main pump on at 6000 gallons and turns it off at
1000 gallons.
With the PumpAlternation feature activated, the next time the level
reaches 6000 gallons, relay #1 transfers and starts the backup
pump.
If the backup pump is not able to keep up, and the level reaches
7000 gallons, relay #2 transf ers and starts the main pump as well.
Once the level has dropped below the reset points, both relays will
turn off.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
7
Input Signal Conditioning
Functions (FUNCTION)
The Function menu is used to select the input signal
conditioner applied to the input: linear, square root,
programmable exponent, or round horizontal tank vol-
ume calculation. Multi-point linearization is part of the
linear function selection.
Meters are set up at the factory for linear function with
2-point linearization. The linear function provides a
display that is linear with respect to the input signal.
Square Root Linearization (SQROOT)
The square root function can be used to linearize the
signal from a differential pressure transmitter and dis-
play flow rate in engineering units.
PD6602 Displaying Flow Rate by Applying the Square
Root Function to the Output of a DP Transmitter.
Programmable Exponent
Linearization (EXPONENT)
The programmable exponent can be used to linearize
the signal from level transmitters in open-channel flow
applications using weirs and flumes.
The PD6602, in combination with an ultrasonic level
transmitter, makes for an economical way to measure
and display open channel flow rate in most weirs and
flumes. A guide such as the ISCO Open Channel
Flow Measurement Handbook can provide the user
with all the information needed: the exponent used in
the flow equation for the desired flow units and the
flow rate for any given head height. For example, to
display the open channel flow rate from a 3" Parshall
flume, the ISCO handbook advises the exponent is
1.547 and at the maximum head height of 3.0 feet,
the flow rate is 3.508 MGD.
Round Horizontal Tank Linearization
(RH TANK)
This function automatically calculates the volume in a
round horizontal tank with flat ends. It is only available
for PV2 while the meter is in dual-scale mode.
Set the display for the desired decimal point and engi-
neering units before entering the round horizontal
tank function. Select units (inches or cm) for the tank
dimensions. Enter the diameter and the length in
inches or cm and the results will be calculated auto-
matically in US gallons or liters. The unit of measure
for the volume can be changed using the display
menu.
PD6604 Displaying Height in Feet and Volume in
Gallons in a Round Horizontal Tank Using
the RHT Linearization Feature.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
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Ordering Information
General Purpose Instruments
Loop Leader PD6602 • Standard Decimal Models – General Purpose
Model
Description
PD6602–LNN
Loop-Powered, General Purpose, No Options
PD6602–L2N
Loop-Powered, General Purpose, Two Solid State Relays
PD6602–L3N
Loop-Powered, General Purpose, 4-20 mA Analog Output
PD6602–L5N
Loop-Powered, General Purpose, Two Solid State Relays and 4-20 mA Analog Output
Loop Leader PD6604 • Decimal/Bargraph Models – General Purpose
Model
Description
PD6604–LNN
Loop-Powered, General Purpose, Bargraph, No Options
PD6604–L2N
Loop-Powered, General Purpose, Bargraph, Two Solid State Relays
PD6604–L3N
Loop-Powered, General Purpose, Bargraph, 4-20 mA Analog Output
PD6604–L5N
Loop-Powered, General Purpose, Bargraph, Two Solid State Relays and 4-20 mA Analog Output
Hazardous Area Instruments
Loop Leader PD6606 • Standard Decimal Models – Hazardous Area
Model
Description
PD6606–LNN
Loop-Powered, Hazardous Area, No Options
PD6606–L2N
Loop-Powered, Hazardous Area, Two Solid State Relays
PD6606–L3N
Loop-Powered, Hazardous Area, 4-20 mA Analog Output
PD6606–L5N
Loop-Powered, Hazardous Area, Two Solid State Relays and 4-20 mA Analog Output
Loop Leader PD6608 • Decimal/Bargraph Models –Hazardous Area
Model
Description
PD6608–LNN
Loop-Powered, Hazardous Area, Bargraph, No Options
PD6608–L2N
Loop-Powered, Hazardous Area, Bargraph, Two Solid State Relays
PD6608–L3N
Loop-Powered, Hazardous Area, Bargraph, 4-20 mA Analog Output
PD6608–L5N
Loop-Powered, Hazardous Area, Bargraph, Two Solid State Relays and 4-20 mA Analog Output
Note: All models come with two open collector outputs and one digital input standard.
Enclosures
Series
# of Meters
Description
PDA2300
1 –10
Plastic NEMA 4X: Hinged Cover, Clasp Closure, Meters Mount in Cover
PDA2600
1 –6
Stainless Steel NEMA 4X: Hinged Cover, Screw Closure, Meters Mount in Cover
PDA2700
1 –6
Painted Steel NEMA 4: Hinged Cover, Screw Closure, Meters Mount in Cover
PDA2800
1 –2
Plastic NEMA 4X: Screwed Down Cover, Meters Mount in Cover
PDA3400
1 –3
Plastic NEMA 4X: Screw Down Cover, Meters Mount Behind Cover
Need help selecting the right enclosure? Go to www.predig.com/esu
Accessories
Model
Description
PD9501
Multi-Function Calibrator
PD9502
Low-Cost Signal Generator
PDA1024-01
24 VDC Transmitter Power Supply for DIN Rail
PD659
Signal Isolators, Splitters, and Conditioners
PDA-LH
Light/Horn Accessory, See website for Available Colors
MOD-LH
Light/Horn/Enclosure Modification, See website for Available Colors
PDA2360
Plastic Control Stations

PD6600 Series Loop-Powered Process Meters
Instruction Manual
9
PDA2360 Plastic Control Stations
Model
Description
PDA2360-E
Emergency Button
PDA2361-A
Ack Button
PDA2361-B
Blank Button
PDA2361-R
Reset Button
PDA2361-T
Tare Button
PDA2361-S
Stop Button
PDA2361-Q
Silence Button
Notes:
1.These control stations do not carry hazardous area approvals
and are thus not suitable for location in hazardous areas. The
use of additional protective devices may allow them to be
installed in a safe area and connected to a device in a hazardous
area. User should consult a professional engineer to determine
suitability of these products for their specific application.
2.Control stations can be connected directly to the meter’s Digital
Input terminals labeled DI+ and DI-. See Remote Operation of
Meter on page 21 for details.
Light / Horn & Button Accessories
Model
Description
MOD-LHRB1
Red Light / Horn and Reset Button
with Holes Drilled in Enclosure(1)
MOD-LHGB1
Green Light / Horn and Reset
Button with Holes Drilled in
Enclosure(1)
MOD-LHYB1
Yellow Light / Horn and Reset
Button with Holes Drilled in
Enclosure(1)
MOD-LHBB1
Blue Light / Horn and Reset Button
with Holes Drilled in Enclosure(1)
MOD-LHWB1
White Light / Horn and Reset Button
with Holes Drilled in Enclosure(1)
Note:
1. This MOD supplies the Light / Horn and Reset Button. The
enclosure comes pre-drilled with holes for Light / Horn and Reset
Button and the user performs the installation and wiring. Meter and
enclosure are sold separately. The Light / Horn hole is in the back
left corner of the enclosure and the Reset Button is centered on the
cover of the enclosure below the meter about an inch off the
bottom of the cover except on the PDA3400 series where it is
mounted on the side of the enclosure.
Signal Splitter & Conditioner Accessories
Model
Description
PD659-1MA-1MA
Signal Isolator with One 4-20 mA
Input and One 4-20 mA Output
PD659-1MA-2MA
Signal Splitter with One 4-20 mA
Input and Two 4-20 mA Outputs
PD659-1V-1MA
Signal Conditioner with One 0-10
VDC Input and One 4-20 mA Output
PD659-1MA-1V
Signal Conditioner with One
4-20 mA Input and One 0-10 VDC
Output
Note:
These signal splitters and conditioners do not carry hazardous area
approvals and are thus not suitable for location in hazardous areas.
The use of additional protective devices may allow them to be in-
stalled in a safe area and connected to a device in a hazardous area.
User should consult a professional engineer to determine suitability of
these products for their specific application.
PDA6420 Split Core AC Current
Transducer
Model
Description
PDA6420
Input: 30/60/120 AAC;
Output: 4-20 mA
Note:
These split core transducers do not carry hazardous area approvals
and are thus not suitable for location in hazardous areas. The use of
additional protective devices may allow them to be installed in a safe
area and connected to a device in a hazardous area. User should
consult a professional engineer to determine suitability of these prod-
ucts for their specific application.
Each Light / Horn accessory comes with
9 labels for the button.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
10
Useful Tools
PD9501 Multi-Function Calibrator
This PD9501 Multi-Function Calibrator has a variety
of signal measurement and output functions, including
voltage, current, thermocouple, and RTD.
PD9502 Low-Cost Signal Generator
The PD9502 is a low-cost, compact, simple to use
4-20 mA or 0-10 VDC signal generator. It can easily
be set for 0-20 mA, 4-20 mA, 0-10 V or 2-10 V
ranges. Signal adjustment is made with a one-turn
knob. A 15-27 VDC wall plug is provided with the
instrument. Optional USB power bank is available.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
11
Specifications
Except where noted all specifications apply to operation at +25°C.
Display
Display
Dual-line LCD with backlight.
Both lines 14-segment alphanumeric.
Top: 0.7" (17.8 mm)
Bottom: 0.4" (10.2 mm)
Display may be programmed to turn red and
flash a user-defined message on
alarm condition.
Backlight
Powered by 4-20 mA loop
Intensity varies with signal level
Top Display
5 digits (-9999 to 99999) or 5 characters (all
capital & most lower-case letters)
Bottom
Display
8 digits (-9,999,999 to 99,999,999; separated
by commas) or 8 characters
(all capital & most lower-case letters)
Bargraph
20 segments, numeric percent indication
at top (PD6604 & PD6608 only)
Decimal Point
Up to four decimal places on top display and
up to seven decimal places on bottom display
Commas
Commas to indicate 1000s
(e.g. 88,987,628) on bottom display
Dual-Scale
Feature
The input can be displayed in different scales
on the top and bottom displays. For instance,
the top display could display the
input in height and the bottom display could
display that same input in volume.
Alarm
Indication
Programmable: red backlight, flashing display,
alarm symbol (!); (symbols not available on
bargraph models). Bargraph segment flashes
on alarm.
Alarm
Message
Programmable: 8 characters maximum;
displayed every 10 sec for 1 sec on bottom
display. May be turned off.
Display
Update Rate
Ambient > -10°C: 1 Update/Second
Ambient = -20°C: 1 Update/2 Seconds
From -20°C to -40°C the update rate slows
down 1 second for every -2°C
(e.g. at -24°C, 1 update/4 seconds).
Overrange
Top: 99999; Bottom: 99,999,999 (flashing)
Underrange
Top: -9999; Bottom: -9,999,999 (flashing)
General
Programming
Method
Front panel & Free PC-based USB
programming software
Enclosure &
Materials
Enclosure: 1/8 DIN, IP65, NEMA 4X front
panel, high impact plastic, NORYL®
polyphenylene ether & polystyrene blend
(PPE PS) resin, UL 94V-0, Color: gray
Gasket: silicone rubber
Faceplate: LEXAN® polycarbonate (PC) Film
Buttons: silicone rubber
Environmental
Operating temperature range:
-40 to 75°C for safe area products
-40 to 70°C for hazardous area products
Storage temperature range: -40 to 85°C
Relative humidity: 0 to 90% non-condensing;
Printed circuit boards are conformally coated.
Noise Filter
Averages the input signal over a period of
time between 1 and 16 seconds to dampen
the effects of a noisy signal that causes a
jumpy display.
Filter Bypass
0.0 to 99.9% of full scale. Input signal
changes that are greater than bypass value
are displayed immediately.
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.
Tare
Tare function zeros out the meter to
accommodate for weight of a container.
Tare function can be assigned to a function
key or a digital input.
Password
Programmable password restricts
modification of programmed settings.
Non-Volatile
Memory
All programmed settings are stored in non-
volatile memory for a minimum of ten years if
power is lost.
Normal Mode
Rejection
64 dB at 50/60 Hz
Connections
Removable screw terminals accept 12 to 22
AWG wire
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) with option board
Warranty
3 years parts and labor. See Warranty
Information and Terms & Conditions on
www.predig.com for complete details.
Input
Input
4-20 mA
Accuracy
±0.02% of span ±1 count,
Square root and
programmable exponent: 10-100% FS
Voltage Drop
Without backlight: 1.5 V maximum,
With backlight: 4.5 V maximum
Equivalent
Resistance
With backlight off: 75 Ω @ 20 mA
With backlight on: 225 Ω @ 20 mA
Input
Overload
Over current protection to 1 A maximum,
Over voltage protection to 30 VDC max
(between mA+ and mA-/BL-)
Temperature
Drift
25 PPM/°C from -40 to 75°C ambient
Function
PV1: Linear (2-32 points), square root, or
programmable exponent
PV2: Linear (2-32 points) or
round horizontal tank
Low-Flow
Cutoff
0.1 to 999,999 or disable. Point below at which
the display always shows zero.
HART
Transparency
The meter does not interfere with existing
HART communications; it displays the
4-20 mA primary variable and it allows the
HART communications to pass through without
interruption. The meter is not affected if a
HART communicator is connected to the loop.
The meter does not display secondary HART
variables.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
12
Common Open Collector &
Relay (Alarm) Specifications
Number
Two open collectors & two relays
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user programmable
Output
Assignment
Pulse, Alarm, Timer, Stopwatch, or
Disable
Alarm Output
Source
Assign to PV (PV1, PV2) or Digital Input
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each open collector
and relay.
Fail-safe on, the output is on under
normal conditions.
Fail-safe off, the output is on under
alarm conditions.
Alarm Operation
Automatic, automatic with manual
override, latching (manual reset
anytime), latching with reset after
cleared (manual reset only after alarm
has cleared)
Alarm Indication
Programmable: red backlight, flashing
display, alarm symbol (!); (symbols not
available on bargraph models). Bargraph
segment flashes on alarm.
Alarm Message
Programmable: 8 characters maximum;
displayed every 10 sec for 1 sec on
bottom display. May be turned off.
Alarm
Acknowledge
Front panel ACK button or external
digital input resets output and screen
indication.
Auto Initialization
When power is applied to the meter,
open collectors and 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)
Stopwatch
Output turns on when started and off
when stopped.
Open Collector Outputs
Rating
Isolated open collector, sinking NPN
5-30 VDC @ 150 mA maximum
Output
Assignment
Pulse, Alarm, Timer, Stopwatch, or
Disable
Pulse Output
Source
PV (PV1, PV2) or Test Frequency
Pulse Output
Factor
0.000001 to 999,999.9
Pulse Width
0.5 ms @ 1 kHz; 500 ms @ 1 Hz;
50% duty cycle
Pulse Output
Frequency
1,000 Hz maximum
Quadrature Pulse
Output
Available for Output 2
(90° behind Output 1) 500 Hz max
Alarm Output
Source
Assign to PV (PV1, PV2)
or Digital Input
Solid State Relays
Rating
250 VAC/VDC @ 1 A resistive
75 VA; 250 VAC; 0.6 A pilot duty
(inductive) –UL Code D300
25 VA; 250 VDC; 0.6 A pilot duty
(inductive) –UL Code R300
Noise
Suppression
Metal oxide varistors across outputs
Relay
Assignment
Pump Alternation, Alarm, Timer,
Stopwatch on/off, or Disable
Alarm Output
Source
Assign to PV (PV1, PV2) or Digital Input
Pump Alternation
Relays may be programmed to alternate
with each pump cycle with an elapsed
time override where the pumps will
alternate regardless of level. Pump
alternation time can be programmed for
0 to 999:59 (hrs:min)
Relay (Pump)
Runtime
Meter will keep track of how long each
relay (pump) has operated and display
this information.
Relay (Pump)
Cycles
Meter will keep track of how many times
the relays (pumps) have cycled and
display this information.
4-20 mA Transmitter Output
Accuracy
±0.05% FS ±0.001mA
Output Source
PV1, PV2, 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 disable
underrange; user selectable
Overrange
20.5 mA, 20.8 mA, or 23.0 mA
(If input > 20.5 mA); or disable
overrange; user selectable
Isolation
500 V input-to-output
Temperature Drift
0.5 µA/°C max from -40 to 75°C ambient
External Loop
Power Supply
7.0VDCto30.0VDCmaximum
Output Loop
Resistance
10-750 Ω @ 24 VDC; 10-1100 Ω @ 30 VDC
On-Board Digital Input
Function
Remote operation of front-panel buttons,
acknowledge/reset relays, reset max/min
values, etc. See User section of Display
Functions & Messages on page 23 for a
complete list of capabilities.
Contacts
2.1 VDC on contact. Connect normally
open contacts across DI+ and DI-
Logic Levels
Logic High: 2.4 to 30 VDC (max)
Logic Low: 0 to 0.9 VDC

PD6600 Series Loop-Powered Process Meters
Instruction Manual
13
MeterView XL Programming
Software
Availability
Free download from www.predig.com
System
Requirements
Microsoft® Windows® 7 & 10
Communications
USB 2.0
(Standard USB A to Micro USB B)
Configuration
Configure all parameters on the meter.
Configure meters one at a time.
Configuration
Files
Generate with or without meter
connected; Save to file for later use.
USB Power
Connection
Meter is powered by USB connection
during programming, if 4-20 mA loop is
not connected.
•The meter should only be connected to a
computer while it is located in a safe area.
To download the MeterView XL programming
software, visit predig.com/meterviewxl.
For detailed programming software instructions, see
the LIM6602MVXL manual.
General Compliance
Information
Electromagnetic Compatibility
EMC Emissions
•CFR 47 FCC Part 15 Subpart B Class A
emissions requirements (USA)
•AS/NZS CISPR 11
Class A ISM emissions requirements
(Australia)
•EN 55011
Group 1 Class A ISM emissions
requirements (EU)
•ICES-001
Issue 4 ISM emissions requirements
(Canada)
EMC Emissions
and Immunity
EN 61326-1
EMC requirements for Electrical equipment
for measurement, control, and laboratory
use –Inductrial Use
All Models

PD6600 Series Loop-Powered Process Meters
Instruction Manual
14
PD6606 & PD6608
Compliance Information
Safety
UL & C-UL
Listed
USA & Canada
UL 61010-1
CAN/CSA-C22.2 No. 61010-1-12
UL File
Number
E160849
Front Panel
UL Type 4X, NEMA 4X, IP65;
panel gasket provided
Low Voltage
Directive
IEC 61010-1
Safety requirements for electrical equipment
for measurement, control, and laboratory use.
Additional
Standards
UL 50E
Hazardous Area Approvals
ATEX
Certificate Number: CML 17ATEX2015X
Ex ia IIC T4 Ga
II 1G
-40°C ≤ Ta ≤ 70°C
IECEx
Certificate Number: IECEx CML 17.0008X
Ex ia IIC T4 Ga
Tamb = -40°C to +70°C
UL & C-UL
UL File Number: E494837
Class I, Division 1, Groups A, B, C
and D T4
Class I, Division 2, Groups A, B, C
and D T4
Ex ia IIC T4 (Canada); Class I Zone 0, Zone 1,
AEx ia IIC T4 (U.S.);
Class I Zone 2, Group IIC T4 (U.S.)
PROCESS CONTROL EQUIPMENT FOR
USE IN HAZARDOUS LOCATIONS
ATEX/IECEx Assessment Standards
ATEX
IECEx
EN 60079-0:2012+A11:2013
EN 60079-11:2012
IEC 60079-0:2011 Ed. 6
IEC 60079-11:2011 Ed. 6
UL Assessment Standards
United States
Standards
Canadian National
Standards
UL 913, Eighth Edition
UL 60079-0, Sixth Edition
UL 60079-11, Sixth Edition
Standard No. UL 121201,
9th Edition
CSA C22.2 No. 60079-0:15
CSA C22.2 No. 60079-11:14
CAN/CSA C22.2 No. 213-17
ATEX/IECEx Special Conditions for Safe Use
The following conditions relate to safe installation
and/or use of the equipment.
•The permitted ambient temperature range for the
PD6606/PD6608 is -40°C to 70°C.
•The equipment must be installed in an enclosure
which provides a minimum degree of protection of
IP20 for the equipment connections.
•Under certain extreme circumstances, the non-me-
tallic parts incorporated in the enclosure of this
equipment may generate an ignition-capable level
of electrostatic charge. Therefore, the equipment
shall not be installed in a location where the exter-
nal conditions are conducive to the build-up of
electrostatic charge on such surfaces. This is par-
ticularly important if the equipment is installed in a
zone 0 location. In addition, the equipment shall
only be cleaned with a damp cloth.
•The equipment loop/power port must be con-
nected to an intrinsically safe barrier with Uo≥ 11V.
•Entity parameters must meet the following require-
ments:
Ui: 30 V; Ii: 175 mA; Ci: 0 μF; Li: 0 μH; Pi: 1.0 W
•For ATEX Certification, barrier and transmitter
must be ATEX Certified with Entity Parameters
and must be connected per manufacturer’s in-
structions.
For European Community:
The PD6606/PD6608 must be installed in accordance
with the Essential Health & Safety Requirements of
Directive 2014/34/EU, the product certificates CML
17ATEX2015X and IECEx CML 17.0008X, and the
product manual.
UL/C-UL Special Conditions for Safe Use
•Associated apparatus may be in a Division 2 or
Zone location if so approved.
•Under certain extreme circumstances, the non-me-
tallic parts incorporated in the enclosure of this
equipment may generate an ignition-capable level
of electrostatic charge. Therefore, the equipment
shall not be installed in a location where the exter-
nal conditions are conducive to the build-up of
electrostatic charge on such surfaces. This is par-
ticularly important if the equipment is installed in a
zone 0 location. In addition, the equipment shall
only be cleaned with a damp cloth.
•The equipment shall be installed in a tool secured
enclosure which provides a minimum degree of
protection of IP20 for the equipment connections.
•Entity parameters must meet the following require-
ments:
Ui: 30 V; Ii: 175 mA; Ci: 0 μF; Li: 0 μH; Pi: 1.0 W
IECEx
PD6606 & PD6608 Only

PD6600 Series Loop-Powered Process Meters
Instruction Manual
15
I.S. Equipment
Entity
Parameters
Required
Relationship
Between Entity
Parameters
I.S. Barrier Entity
Parameters
V max (or Ui)
≥
Voc or Vt (or Uo)
I max (or Ii)
≥
Isc or It (or Io)
P max, Pi
≥
Po
Ci + Ccable
≤
Ca (or Co)
Li + Lcable
≤
La (or Lo)
•For Division 2 and Zone 2 Applications:
Division 2 and Zone 2 installations do NOT require
the use of an intrinsically safe barrier or
intrinsically safe entity parameters. Class I,
Division 2, Groups A, B, C, and D T4 and Class I,
Zone 2, Group IIC T4, -40C <= Ta <= +70C.
Ratings: V = 30 V dc, I = 30 mA; Relay Ratings:
250V ac/dc 1A
For North American Community:
Installation and service of this device and/or
associated apparatus (barrier) should be performed
only by trained service personnel
and must be installed in accordance with the
manufacturer’s control drawing, Article 504 of the
National Electric Code (ANSI/NFPA 70) for installation
in the United States, or Section 18 of the Canadian
Electrical Code for installations in Canada.
•EXPLOSION HAZARD –Do not disconnect
equipment unless power has been removed or
the area is known to be non-hazardous.
•RISQUE D’EXPLOSION –NE PAS BRANCHER
NI DÉBRANCHER SOUS TENSION.
Year of Construction
This information is contained within the serial number
with the first four digits representing the year and
month in the YYMM format.
EU Declaration of Conformity
EU Declaration of Conformity for the PD6602/04 and
PD6606/08 are available in the Documentation CD
provided with the product under the EU DoC menu.
Safety Information
•Read complete instructions prior to installation
and operation of the meter.
•Hazardous voltages exist within enclosure.
Installation and service should be performed only
by trained service personnel.
•Service requiring replacement of internal
components must be performed at the factory.
•Control room equipment must not use or
generate more than 250 VRMS or VDC.
•Hazardous location installation instructions for
associated apparatus (barrier) must be followed
when installing this equipment.
•For safe installation of an ATEX approved
transmitter in series with PD6606/PD6608 loop-
powered meters, the hazardous location
installation instructions for the transmitter,
PD6606/PD6608 loop-powered meter, and
associated apparatus (barrier) must be
compatible.
•PD6606/PD6608 Series Loop-Powered meters
do not add capacitance or inductance to the loop
under normal or fault conditions.
•Substitution of components may impair
hazardous location safety.
•Equipment contains non-metallic materials and
therefore special care and consideration should
be made to the performance of these materials
with respect to chemicals which may be present
in a hazardous environment.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
16
Installation
There is no need to remove the meter from its case to
complete the installation, wiring, and setup of the me-
ter for most applications.
•PD6606 and PD6608 installation mustbeperformed
in accordance with Control Drawing LIM6600-2 in
orderto meet agencyapproval ratings.
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
assistance.
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 and
Figure 2 below, 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
Figure 2. Panel Mounting Details

PD6600 Series Loop-Powered Process Meters
Instruction Manual
17
MeterView XL Programming
Software
Free, PC-based, MeterView XL software that connects
to the meter via a USB cable is available for program-
ming and setup of the meters. This software greatly
simplifies the programming process and allows the
user to save configuration files for later use. The meter
will also be powered by the USB connection so no ad-
ditional power is needed during programming.
•Free PC-Based USB Programming Software
•Easy Programming of Feature-Packed
Product
•USB Connection Provides Power to the
Meter During Programming
•Save & Print Configuration Files without
Meter Connected
•USB Cable Provided with Meter
•PC Data Logging for One or Multiple
Variables
MeterView XL Software Installation
•The meter should only be connected to a
computer while it is located in a safe area.
•Please uninstall previous versions of this
software prior to downloading, installing, and
running the latest version.
1. For complete instructions on how to use
MeterView XL go to LIM6602MVXL manual.
2. Download MeterView XL Installation file to your
PC from the included CD or go to
www.predig.com/meterviewxl
3. Locate the MeterView XL zipped folder on your
PC and double-click to extract and open:
4. Double-click MeterView XL Windows Installer
Package file to open:
5. The MeterView XL Setup Wizard window will
appear. Click “Next” to start the installation
process:
6. The MeterView XL License Agreement window
appears next. Select “I agree” and click “Next”
to continue the installation process:

PD6600 Series Loop-Powered Process Meters
Instruction Manual
18
7. Choose the folder location where you would
like the software to be installed to and select
options for use. Then click “Next” to continue:
8. Confirmation window will appear. Click “Next”
to confirm the installation:
9. The User Account Control message is
displayed. Click “Yes”to proceed with the
installation:
10.Finally, the Installation Complete window will
appear. Click “Close” to exit:
Now you are ready to open the MeterView XL software
to begin programming your Loop Leader meter.
Connecting to the Computer
Loop Leader series meters may be connected to any
Windows 7 or Windows 10 PC via the provided USB
cable by following these steps:
1. Open the MeterView XL software.
2. Connect the Loop Leader meter to the PC
with the provided USB cable.
3. The software will ask if you would like to
read the meter. Click OK.
Specifications
Availability
Free download from www.predig.com
System
Requirements
Microsoft® Windows® 7 & 10
Communications
USB 2.0
(Standard USB A to USB B)
Configuration
Configure all parameters on the meter.
Configure meters one at a time.
Configuration
Files
Generate with or without meter
connected; Save to file for later use.
USB Power
Connection
Meter is powered by USB connection
during programming, if 4-20 mA loop is
not connected.

PD6600 Series Loop-Powered Process Meters
Instruction Manual
19
Dimensions
All units: inches (mm)
Figure 3. Meter Dimensions - Side View
Figure 4. Meter Dimensions - Front View
•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 meter
and ensure personnel safety.
Connections
All connections are made to removable screw
terminal connectors located at the rear of the meter.
This section is only intended for PD6602 and PD6604
safe area installations.
•PD6606 and PD6608 installation mustbeperformed
in accordance with Control Drawing LIM6600-2 in
orderto meet agencyapproval ratings.
Connectors Labeling
The graphics below show the location of all connect-
ors available with requested configuration.
Figure 5. Connector Labeling for PD660#-LNN
Figure 6. Connector Labeling for PD660#-L2N
with 2-Solid State Relays
Figure 7. Connector Labeling for PD660#-L3N
with 4-20 mA Output
Figure 8. Connector Labeling for PD660#-L5N with
2 Solid State Relays & 4-20 mA Output
1.76"
(45mm)
0.59"
(15mm) 3.2"
(81mm)
2.45"
(62mm)
3.6"
(91mm)
660.20
GALLONS
1234
SIGNAL
43 6521
O1-O1+ O2+ O2- DI-DI+ mA- XmA+ BL-
OPEN COLLECTORS
DW2498
1234
SIGNAL
43 6521
O1-O1+ O2+ O2- DI-DI+ mA- XmA+ BL-
OPEN COLLECTORS
DW2499
1234
NOC C NO
SSR2 SSR1
1234
SIGNAL
43 6521
O1-O1+ O2+ O2- DI-DI+ mA- XmA+ BL-
OPEN COLLECTORS
DW2500
mA OUT
2
I-I+
1

PD6600 Series Loop-Powered Process Meters
Instruction Manual
20
Wiring Diagrams
Safe Area Current Loop (4-20 mA)
Connections
•PD6606 and PD6608 installation mustbeperformed
in accordance with Control Drawing LIM6600-2 in
orderto meet agencyapproval ratings.
Signal connections are made to a six-terminal con-
nector labeled SIGNAL. See Connectors Labeling on
page 19. The following figures show a 4-20 mA cur-
rent loop connected to the meter. Figure 9 shows the
connection without the backlight and Figure 10 shows
the connection with the backlight (the backlight can be
disabled/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 or PC-based software.
Figure 9. 4-20 mA Input Connection without Backlight
Figure 10. 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.
Safe Area 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 11. Digital Input Connections
Safe Area 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 exter-
nal power supply.
Figure 12. 4-20 mA Output Connections
Safe Area Solid State Relay Connections
Relay connections are made to a four-terminal
connector labeled SSR1 and SSR2 on Figure 6.
Connector Labeling for PD660#-L2N
with 2-Solid State Relays and Figure 8. Connector
Labeling for PD660#-L5N with
2 Solid State Relays & 4-20 mA Output on page 19.
Each relay’s C terminal is common only to the
normally open (NO) contact of the corresponding
relay.
Figure 13. Solid State Relay Connections
Safe Area 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 14. Open Collector Output Connections
DI+ DI- mA- mA+ BL-X
DI+ DI- mA- mA+ BL-X
DI+ DI- mA- mA+ BL-X
I+ I-
C NO C NO
Internal
Load Load
POWER
O1+ O1- O2+ O2-