PD6622
PD6624
PD6622
PD6622
European Conformity

Features

  • 1/8 DIN Loop-Powered Flow Rate/Totalizers with NEMA 4X, IP65 Front
  • 4-20 mA Input Displayed with ±0.02% 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
  • 8-Digit Total & Grand Total Display, Up to 13 Digits Using Both Lines
  • Display Rate & Total Simultaneously
  • Automatic or Manual Batch Control
  • Display Open Channel Flow with Programmable Exponent Feature
  • 32-Point Linearization & Square Root Extraction
  • 20-Segment Bargraph with Numeric Percent Indication, Optional
  • (2) Open Collector Outputs Standard; Assignable to Pulse, Alarm, Timer, or Stopwatch
  • (2) Optional Loop-Powered Solid State Relays; Assignable to Alarm, Sample, Timer, Batch, or Stopwatch
  • Stopwatch & Timer Functions to Drive Relays & Open Collectors
  • Optional Isolated 4-20 mA Analog Output
  • Display Relay Runtime & Cycle Count via Relay Info Menu
  • Free PC-Based MeterView XL USB Programming Software
  • Loop-Powered Backlight with Red Backlight for Alarm Conditions
  • Operating Temperature Range: -40 to 167°F (-40 to 75°C)
  • Conformal Coated PCBs for Dust & Humidity Protection
  • 3-Year Warranty
Watch the full length introduction video here.

Why Use Loop-Powered Meters?

The most basic decision a user wishing to display a 4-20 mA signal on a digital display has to make is: should the meter be powered by line voltage or should it be powered by the 4-20 mA loop?

There are three main benefits of using loop-powered devices:

  • No additional power required
  • Easy wiring
  • Additional digital displays can easily be added in the same loop

The following diagram illustrates how a loop-powered meter is wired. Notice there are only two connections made to the meter.

Loop-Powered Connections Diagram

For more information on loop-powered meters, check out Fundamentals of Loop-Powered Devices and Loop-Powered vs Line-Powered Meters white papers.

Overview

Loop-Powered Flow Rate/Totalizers with Advanced Display and Control Features

These loop-powered 1/8 DIN flow rate/totalizers can be installed virtually anywhere to provide convenient and informative display of flow rate and total from a 4-20 mA signal. One of the most convenient features of these instruments is their ability to display both flow rate and total at the same time. For instance, flow rate is typically displayed on the 5-digit alphanumeric top display and flow total or grand total on the 8-digit alphanumeric bottom display. Both display lines use 14-segment, alphanumeric characters for clear indication of tags, units, or alarm messages.

Further enhancing the display on these instruments is a 20-segment bargraph available on the PD6624/8 that also includes a numeric value of the percentage the bargraph represents.

Free, PC-based, MeterView XL software that connects to the meter via a micro USB cable is available for programming and setup of the meters.

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 reset the total, acknowledge the relays, to start/stop a timer/stopwatch, and more. The relays can be programmed for alarm indication, sample, timer, batch control, or stopwatch.

For intrinsically safe versions of these instruments please click here.

Front

PD6622/6 Front

PD6622
Flow Rate/Totalizer

  • 5-Digit alphanumeric top line
  • 8-Digit alphanumeric bottom line
PD6624/8 Front

PD6624
Flow Rate/Totalizer with Bargraph

  • 5-Digit alphanumeric top line
  • 8-Digit alphanumeric bottom line
  • 20-Segment bargraph with numeric percentage

Connections

PD6600 Connection for -L5N Option

Connections for -L5N Option

  • (2) Open Collector Outputs Standard (150 mA max); Assignable to Pulse, Alarm, Timer, or Stopwatch
  • Digital Input for Remote Operation of a Single Task Such as Resetting the Total
  • (2) Optional Loop-Powered Solid-State Relays; Assignable to Alarm, Control, Timer, or Stopwatch
  • Optional Isolated 4-20 mA Analog Output

Display Features

PD6622 Flow Rate/Totalizer

PD6622 and PD6626 Display Features

PD6624 Flow Rate/Totalizer with Bargraph

PD6624 and PD6628 Display Features

Wide Variety of Display Capabilities

In addition to the most common setup of flow rate on the top line and flow total on the bottom line, these meters can be set up for a variety of display configurations.

Display Flow Rate and Toggle Between Units and Tag

Display Flow Rate and Toggle Between Units & Tag

Display Flow Total and Toggle Between Units and Tag

Display Flow Total and Toggle Between Units & Tag

Display Flow Total & Flow Grand Total and Toggle Between Units

Display Flow Total & Flow Grand Total and Toggle Between Units

The following table shows the items that can be displayed on the Top and Bottom lines:

PD4-6624 Display Items Top Line
PD4-6624 Display Items Bottom Line
Dual Scale Feature

Dual-Scale Display Feature

Users can use the Loop Leader's dual-scale feature when they want to show the same input in two different scales. For instance, the following example shows an application where the Loop Leader displays the input in gallons per minute and cubic feet per minute.

7-Segment vs. 14-Segment Comparison

14-Segment Characters

Notice how much better characters like “/” and “m” appear as 14-segment characters on the bottom display vs. 7-segment characters found on other meters.

Commas Make it Easy to Read Big Numbers

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.

Commas on bottom display
Meter with Red Backlight

Backlight Turns Red on Alarm

The loop-powered backlight is standard on all Loop Leader meters. It provides optimimum visibility in any lighting condition and it can be programmed to turn red for alarm conditions. The backlight may be enabled or disabled using the Backlight menu. The backlight is enabled by default (input must be wired appropriately for the backlight to function).

Meter with Bargraph

Bargraph Provides Quick Understanding

To help users get a quick understanding of where their process is at, certain Loop Leader models are available with a 20-segment bargraph. This bargraph also includes a numeric value of the percentage the bargraph represents. The bargraph can be programmed to represent either rate, a percentage of the rate, total, or it can be disabled.

Using 13 Digits to Display Total

The top and bottom displays can be setup to display a 13-digit total (9,999,999,999,999). The total will roll over to zero when it exceeds the limit.

Using 13 Digits to Display toatl on PD6620

Predefined and Custom Units

The meter has the most common predefined rate and volume units. If the desired unit is not available, the user can program a custom unit.


Total & Rate in Different Units

The user can select to display total in different units than the rate. For instance, a customer could measure flow rate in gallons per minute and total in acre-feet by simply selecting AF (acre-feet) units for the total. Additionally the user can enter a custom unit and conversion factor to display the total in any unit of measure.

Outputs

Loop Leaders come with two open collector outputs as standard and two solid-state relays and 4-20 mA output as options. The open collector outputs and relays generally operate in the same manner, with the major exception being the open collectors are not available for batch control and the relays are not available with pulse output features. The open collectors and relays can be controlled either automatically or manually. The alarm status (with a unique flashing red message for each of the two relays and open collectors) will show on the display even with no output wired.

PD6620 Output Connections

Two Open Collector Outputs

The meter is equipped with two NPN open collector outputs that may be set up for pulse outputs, alarms, timed pulses, stopwatch on/off, or disabled. Pulse outputs can be set to transmit the rate, total or grand total. Output 2 may be used to generate a quadrature output based on the other open collector output. An output test mode is also selectable to generate pulses at a constant programmable frequency. The open collectors are commonly used to generate a pulse for every user-defined amount of flow that has been generated. For instance, the Loop Leader+ can be programmed to generate a pulse for every 100 gallons of flow.

Two Optional Solid-State Relays

The meter is optionally equipped with two solid-state relays that may be set up for alarms, sample, timer, batch control, or stopwatch. The relays are rated at 250 VAC/DC @ 1 A for resistive loads and 75 VA @ 0.6 A, 250 VAC/DC max (Safe Area only) for inductive loads. Alarms are available based on the PV value or the digital input.

Optional Isolated 4-20 mA Output

The isolated analog output signal can be configured to represent the rate, total or to retransmit the 4-20 mA input signal without the need to scale the output. While the output is nominally 4-20 mA, the signal will accurately accommodate under- and over-ranges from 1 to 23 mA. The output can be reverse scaled such that the meter’s high calibration value outputs 4 mA and the meter’s low calibration outputs 20 mA.

Loop-Powered Relay Alarm Trip

The two solid-state relays can be used as a loop-powered relay alarm trip. The Loop Leader’s two relays can be programmed for two different kinds of latching operation: Reset via momentary contact closure at any time or reset via momentary contact closure only after the alarm has cleared. And the meter’s display can be programmed to turn red and flash a unique custom alarm message for each relay – something not found on most loop-powered alarm trips.

Sampling Relay

A relay set to sample will trigger when the total or grand total value has incremented by a programmed amount. The relay can be programmed to stay on for a specified amount of time.

For example: if a relay is set to sample the total with a COUNT of 1,000 and a TIME of 10 seconds, the relay will energize for 10 seconds each time the total increments by 1,000 (e.g. 1000, 2000, 3000).

Resetting the Open Collectors and Relays

The open collectors and relays (alarms) may be programmed to reset in the following ways:

  • Automatic (AUTO): Alarm will reset automatically once the alarm condition has cleared.
  • Automatic/Manual (AUTO.MAN): Alarm will reset automatically once the alarm condition has cleared but can also be reset using the Enter button (or whichever function key is set to acknowledge) at any time.
  • Latching (LATCH): Alarm must be reset manually and can be done so at any time. Press the Enter (ACK) button at any time to clear the alarm.
  • Latching with Reset after Cleared (L-CLEAR): Alarm must be reset manually and can only be done so after the alarm condition has cleared. Press the Enter (ACK) button after the alarm condition has cleared to reset the alarm.

Batch Control

The Loop Leader, when ordered with the two solid-state relays, can be used as a simple, one or two-stage batch controller. The user enters a preset and preclose value and sets the Loop Leader to either count up or count down. The top display will show the total and the bottom display will show the preset batch amount. The function keys are automatically changed so that F1 starts a batch, F2 opens the preset menu to allow the preset value to be changed, and F3 pauses/stops the currently running batch. Batching can be either automatic or manual.

Batch Control Operation Example

The following example shows how two-stage manual batch control functions with a Loop Leader. This setup will establish a 55-gallon preset for the batch, with a main valve (high flow) that will close at 50 gallons, and a trickle valve (low or restricted flow) that will close at 55 gallons. Because the first batch overruns by 0.10, the batch preset will be changed to 54.90 for the next batch to compensate for overrun.

Manual Batch Control

The manual batch control feature is used for batch processes that the operator wants to start manually. It can also be used where the batch size needs to be manually adjusted for each batch. The batch can be controlled by the button on the meter, or with the PDA-BUTTON connected to the digital input.

Batch control Step 1

System Setup

Both valves are closed with an empty barrel in place. The batched total is displayed in the upper display, the preset is selected for the lower display.

Batch control Step 2

Batch Start

The START button or (F1) is pressed. Both valves open. The barrel begins to fill.

Batch control Step 3

Preclose Valve

When the batch total reaches a value of 50.00 (Preset [55.00] – Pre-close [5.00]) the full-flow valve closes. The fill rate of the tank slows as a result.

Batch control Step 4

Completed Batch

When the batch is complete, the restricted flow valve closes. If overrun occurs, then the preset must be adjusted to compensate for the overrun amount. The next batch will only start after the START button or (F1) is pressed.

Batch control Step 5

Overrun Correction

To compensate for overrun in the previous batch, adjust the preset to 54.90, so that the next batch is accurate (55.00).

Batch control Step 6

Manual Start of Next Batch

A new, empty, barrel is put in place and the START button or (F1) is pushed to manually start the next batch.

Batch control Step 7

Change Batch Size

While the process is stopped, a new preset fill amount may be selected with the Batch key (F2) for a different size barrel.

Batch control Step 8

Pause/Stop

At any time, press the STOP button or Stop key (F3) once to pause the process, or twice to cancel the batch, which stops the process.

Batch control Step 9

Resume Batch

If the batch has been paused, then press START button or (F1) to resume the batch process.

Automatic Batch Control

The automatic batch control feature is used for batches that start automatically once the previous batch is completed. There is no opportunity for the operator to change the batch size between batches. The batch can be controlled by the button on the meter, or with the PDA-BUTTON connected to the digital input.

Batch control Step 1

System Setup

Both valves are closed with an empty barrel in place. The batched total is displayed in the upper display, the preset is selected for the lower display.

Batch control Step 2

Batch Start

The START button or (F1) is pressed. Both valves open. The barrel begins to fill.

Batch control Step 3

Preclose Valve

When the batch total reaches a value of 50.00 (Preset [55.00] – Pre-close [5.00]) the full-flow valve closes. The fill rate of the tank slows as a result.

Batch control Step 4

Completed Batch

When the batch is complete, the restricted flow valve closes. If overrun occurs, then the preset must be adjusted to compensate for the overrun amount.

Batch control Step 5

Start Delay

After the batch is completed, the operator removes the full barrel and places an empty barrel; the new batch starts automatically after 60 seconds (Time Delay).

Batch control Step 6

Automatic Start of Next Batch

The next batch begins automatically after 60 seconds, both relays activate and both valves open.

Batch control Step 7

Pause

At any time, press the STOP button or Stop key (F3) once to pause the process.

Batch control Step 8

Resume Batch

If the batch has been paused, then press START button or (F1) to resume the batch process.

Batch control Step 9

Stop Process

At the end of the shift, press STOP button or Stop key (F3) twice to stop the batch process.

Totalizer Capabilities

Loop Leader flow rate/totalizers can be programmed for a wide variety of totalizer applications. They can display total, grand total, or non-resettable grand total; the rate can be displayed with a time base of seconds, minutes, hours or days. The user can program a totalizer conversion factor, a non-resettable grand total, password protection, and several total reset methods.

Totalizer Conversion Factor & Multiplier

The user can enter a totalizer conversion factor that allows the meter to display total in different units than the rate. For instance, a customer could measure flow rate in gallons per minute and total in millions of gallons. A multiplier may be selected to automatically display the value in kGAL, MGAL, etc. Use the custom units to display the total in any unit of measure including units in languages other than English.

Totalizer Password Protection

The total and grand total can be password protected so they can be reset only by authorized personnel

Non-Resettable Grand Total

The user can set up the grand total to be non-resettable by selecting YES for PERMLOCK in the Advanced - Grand Total - Reset menu. Once this is done, the grand total can never be reset.

Low-Flow Cutoff

The user may program the meter for a low-flow cutoff such that the meter displays zero below this point, regardless of the input value.

Remote Total Reset

The total can be reset via an external contact closure on the digital input.

PD6624 Remote Total Reset

Front Panel Total Reset

The three front panel function keys can be programmed to reset the total and grand total. This makes it possible for the user to reset either the total or the grand total by pressing the appropriate function key. Of course, if the total or grand total is password protected, they will not reset when the function key is pressed unless the password is entered.

PD6624 Front Panel Total Reset

F2 Function Key is Programmed
for Reset by Default

Total Alarms

The Loop Leader’s two open collectors and the two relays can be set up to alarm when the total reaches a user-defined set point. A variety of reset modes are available and the user can also program time delays and fail-safe operation.

Total Stored in Non-Volatile Memory

Total and grand total values, and all programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.

Input Signal Conditioning

To satisfy applications that require scaling in ways other than the usual 2-point linear method, the Loop Leader can also be scaled for square root (differential pressure flow), or programmable exponent (open channel flow).

For existing processes that require these linearization capabilities, one of the great benefits of loop-powered meters is that they get their power directly from the 4-20 mA loop and thus require no additional wiring. All a user has to do is break the existing loop and wire in the meter. For this reason, loop-powered meters are very easy to add to existing applications such differential pressure or open channel flow.

Differential Pressure Flow

The Loop Leader can display flow rate and total by extracting the square root from the 4-20 mA signal from a differential pressure transmitter. The user selectable low-flow cutoff feature gives a reading of zero when the flow rate drops below a user selectable value.

Differential Pressure Flow

Multi-Point Linearization

Meters are set up at the factory for linear function with 2-point linearization. Up to 32 linearization points can be selected for rate under the linear function. Multi-point linearization can be used to linearize the input for non-linear signals to convert level to flow using weirs and flumes with complex equations.

MeterView XL makes it easy to program up to 32 points.

Multi-Point Linearization

Open Channel Flow

The Loop Leader, 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.

Open Channel Flow
Open Channel Flow Programming

Physical Features

The Loop Leader is designed for ease-of-use in industrial applications. Considerations include a NEMA 4X front panel, wide operating temperature range, removable screw terminal connectors, snap in place mounting brackets, forgiving panel cutout requirement, and UL Listing for electrical safety. All of these features are backed by a 3-year warranty.

Type 4X Front Panel

Type 4X / NEMA 4X Front Panel

Not only does the Loop Leader’s front panel UL Type 4X approval indicate it is waterproof, it also indicates it is rugged. Part of the UL Type 4X test is to drop a 2 inch, 1 lb solid stainless steel ball from 4 feet on top of the meter’s faceplate.

Removable Screw Terminals

Removable Screw Terminal Connectors

Industrial applications require screw terminal connections for easy field wiring and the Loop Leader goes one step further in convenience by making them removable also.

Forgiving Panel Cutout

Forgiving Panel Cutout Requirement

The Loop Leader’s bezel has been oversized to allow for not perfectly executed panel cutouts where NEMA 4X seal is not required.

Wide Operating Temperature Range

Wide Operating Temperature Range

The Loop Leader can operate from -40 to 75°C (-40 to 167°F). This means it can be installed in a wide variety of indoor and outdoor industrial applications. And over this range, the Loop Leader will drift no more than 0.003% of calibrated span/°C from -40 to 75°C ambient.

Mounting Brackets

Secured-in-Place Rugged Mounting Brackets

If you’re installing the Loop Leader outdoors in the hot or cold weather, the last thing you want to do is fumble around with mounting brackets that don’t stay in place. The Loop Leader’s mounting brackets can be easily secured into place and then screwed down to the panel. These brackets are rugged so they can be tightened to the panel to provide a solid NEMA 4X seal.

USB Port

USB Port

A USB port located on the side of the meter allows it to be connected to a PC for use with free MeterView XL software. The meter is powered by the USB connection during programming, if a 4-20 mA loop is not connected.

Operational Features

There are two ways the user can interact with the Loop Leader to perform a variety of useful functions: programmable function keys and the digital input.

Programmable Function Keys

Three buttons labeled F1, F2, and F3 located inside the lower panel door can be programmed as function keys to perform a variety of meter functions simply by pressing the button. These include resetting the total, operating the batch control functions, resetting the meter’s relays or open collectors, starting and stopping timers, and displaying max/min values. The default settings for the function keys are:

ButtonDescription (Default Settings)
F1 Function Key ButtonPress to display grand total. Continue pressing to cycle through max, min, rate, and total displays.
F2 Function Key ButtonPress to access the Reset menu. Press F1 to scroll through the options. Press F3 to reset the currently displayed parameter.
F3 Function Key ButtonPress to acknowledge all manually resettable relays or open collectors.
Press to lock/unlock the display value after pressing the F1 key.

On-Board Digital Input

A digital input is standard on the meter. This digital input is programmed identically to the function keys. The input is triggered with a contact closure between DI+ and DI-, or with an active low signal. For a complete list of Digital Input settings, see the instruction manual.


P6600 Digital Input Connections

Except where noted all specifications apply to operation at +25°C.

Display

DisplayDual-line LCD with backlight.
Both lines 14-segment alphanumeric.
Top: 0.7" (17.8 mm) 5 digits
Bottom: 0.4" (10.2 mm) 8 characters
Display may be programmed to turn red and flash a user-defined message on alarm condition.
Top Display5 digits (-9999 to 99999) or 5 characters
(all capital & most lower-case letters)
Bottom Display8 digits (-9,999,999 to 99,999,999; separated by commas) or 8 characters
(all capital & most lower-case letters)
BacklightPowered by 4-20 mA loop. Intensity varies with signal level.
Bargraph20 segments, numeric percent indication at top (PD6624 only)
Decimal PointUp to four decimal places on top display and up to seven decimal places on bottom display
CommasCommas to indicate 1000s
(e.g. 88,987,628) on bottom display only
Dual-Scale FeatureThe input can be displayed in different scales on the top and bottom displays. For instance, the top display could display the flow in GPM and the bottom display could display that same input in CFM.
Alarm IndicationProgrammable: red backlight, flashing display, alarm symbol (!) (not available on bargraph models), bargraph segment flashes on alarm.
Custom Alarm MessagesProgrammable for each relay/open collector: 8 characters maximum; displayed every 10 sec for 1 sec on bottom display. May be turned off.
Display Update RateAmbient > -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).
OverrangeTop: 99999
Bottom: 99,999,999 (flashing)
UnderrangeTop: -9999
Bottom: -9,999,999 (flashing)


General

Programming MethodFront panel & Free PC-based USB programming software
Enclosure & MaterialsEnclosure: 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
EnvironmentalOperating temperature range: -40 to 75°C (-40 to 167°F)
Storage temperature range: -40 to 85°C (-40 to 185°F)
Relative humidity: 0 to 90% non-condensing;
Printed circuit boards are conformally coated.
Noise FilterAverages 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 Bypass0.0 to 99.9% of full scale. Input signal changes greater than bypass value are displayed immediately.
RecalibrationRecalibration is recommended at least every 12 months.
Max/Min DisplayMax/min readings reached by the process are stored until reset by the user or until power to the meter is turned off.
TareIf the totalizer is disabled, the Tare function zeros out the meter to remove the weight of a container. Tare function can be assigned to a function key or the digital input.
PasswordThere are three separate passwords available that can be set independently of each other: Main, Total, and Grand Total.
The Main password prevents access to the meter Programming Mode.
Total and Grand Total passwords prevent resetting the total and grand total, respectively.
Non-Volatile MemoryTotal and Grand Total values, and all programmed settings are stored in non-volatile memory for a minimum of ten years if power is lost.
Normal Mode Rejection64 dB at 50/60 Hz
ConnectionsRemovable screw terminals accept 12 to 22 AWG wire.
Tightening TorqueScrew terminal connectors: 4.5 lb-in (0.5 Nm)
Mounting screws: 8.0 lb-in max. (0.9 Nm)
Overall Dimensions4.68" x 2.45" x 3.79"
(119 mm x 62 mm x 96 mm)
(W x H x D)
Weight8.7 oz (247g) with option board
Warranty3 years parts and labor. See Warranty Information and Terms & Conditions for complete details.


Input

Input4-20 mA
Accuracy±0.02% of span ±1 count
Square root and programmable exponent: 10-100% FS
Voltage DropWithout Backlight: 1.5 V maximum
With backlight: 4.5 V maximum
Equivalent ResistanceWith backlight off: 75 Ω @ 20 mA
With backlight on: 225 Ω @ 20 mA
Input OverloadOver current protection to 1 A maximum
Over voltage protection to 30 VDC max (between mA+ and mA-/BL-)
Temperature Drift25 PPM/°C from -40 to 75°C ambient
FunctionLinear (2-32 points), square root, or programmable exponent
PV2: Linear (2-32 points) or round horizontal tank (If total is disabled and PV2 is enabled)
Low-Flow Cutoff0.1 to 999,999 or disable. Point below at which the display always shows zero.
HART TransparencyThe 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.


Rate/Totalizer

Rate DisplayTop display: -9999 to 99999;
Bottom display: -9,999,999 to 99,999,999 (with commas)
Total & Grand Total DisplayTop display: 0 to 99999;
Bottom display: 0 to 99,999,999 (with commas)
13-Digit Total & Grand TotalUp to 9,999,999,999,999 using both lines with 13-digit total feature enabled.
Total & Grand Total IndicationOn bottom display, “T” indicates total and “GT” indicates grand total
(not available on bargraph models)
Total Decimal PointUp to four decimal places on top, up to seven decimal places on bottom.
Total decimal point is independent of rate decimal point.
TotalizerCalculates total based on rate and rate units to display total in engineering units.
A custom factor must be programmed if using custom defined units.
Time BaseSeconds, Minutes, Hours, Days
Totalizer RolloverTotalizer rolls over when display exceeds 99,999,999 (9,999,999,999,999 if 13-digit limit enabled). Relay status reflects display.
Total & Grand Total ResetVia front panel button, external contact closure on digital input, or MeterView XL.
Total & Grand Total Reset PasswordsTotal and grand total passwords may be entered to prevent resetting the total or grand total unless a password is entered.
Non-Resettable Grand TotalGrand total reset may be disabled through the meter interface. Grand total reset may be permanently disabled by selecting YES at the PERMLOCK menu.
Non-Volatile MemoryTotal and Grand Total values are stored in non-volatile memory for a minimum of ten years if power is lost.


Batch Control

MethodsAutomatic or Manual, count up or count down
Manual Batch StartPressing F1 function key starts the batch
Manual Batch Pause/StopPressing F3 once pauses the batch, pressing it twice cancels the batch
Automatic BatchingThe Loop Leader can be used as an automatic batch controller where batches run continuously without operator input
Batching Relay OperationSingle or dual-relay batching with optional preclose for two-stage operation
Batch PresetSet via F2 function key anywhere between 0.0001 to 99,999 based on batch total decimal point. If batch total is assigned to bottom, the preset can be up to 8 digits.
Batch PrecloseFor two-stage batch application, a preclose value can be set to close the main flow line.
Automatic Batch Restart Delay1 to 9,999 seconds. The batch will automatically restart after completion of the last batch.


Common Open Collector & Relay Specifications

NumberTwo open collectors & two relays
High or Low AlarmUser programmable for high or low alarm
Alarm Deadband0-100% FS, user programmable
Output AssignmentAlarm, Timer, Stopwatch, or Disable
Alarm Output SourceAssign to rate, total, grand total, or digital input
On & Off Time Delay0 to 9,999 seconds
Fail-Safe OperationIndependent 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 OperationAutomatic, automatic with manual override, latching (manual reset anytime), latching with reset after cleared (manual reset only after alarm has cleared)
Alarm IndicationProgrammable: red backlight, flashing display, alarm symbol (!) (not available on bargraph models), bargraph segment flashes on alarm.
Custom Alarm MessagesProgrammable for each relay/open collector: 8 characters maximum; displayed every 10 sec for 1 sec on bottom display. May be turned off.
Alarm AcknowledgeFront panel ACK button or external digital input resets output and screen indication.
Auto InitializationWhen power is applied to the meter, open collectors and relays will reflect the state of the input to the meter.
Timer OutputOne-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)
StopwatchOutput turns on when started and off when stopped.


Open Collector Outputs

RatingIsolated open collector, sinking NPN
5-30 VDC @ 150 mA maximum
Output AssignmentPulse, Alarm, Timer, Stopwatch on/off, or Disable
Pulse Output SourcePulse output based on Rate, Total, Grand Total, or Test Frequency, Alarm, Timer, Total Reset, Stopwatch on/off, or Disable
Pulse Output Factor0.000001 to 999,999.9
Pulse Width0.5 ms @ 1 kHz; 500 ms @ 1 Hz; 50% duty cycle
Pulse Output Frequency1,000 Hz maximum
Quadrature Pulse OutputAvailable for Output 2 (90° behind Output 1) 500 Hz max
Alarm Output SourceAssign to Rate, Total, Grand Total or Digital Input


Solid-State Relays

Rating250 VAC/VDC @ 1 A resistive
75 VA; 250VAC; 0.6 A pilot duty (inductive) – UL Code D300
25 VA; 250VDC; 0.6 A pilot duty (inductive) – UL Code R300
Noise SuppressionMetal oxide varistors across outputs
Relay AssignmentAlarm, Sample, Timer, Batch, Stopwatch on/off, or Disable
Alarm Output SourceAssign to Rate, Total, Grand Total, or Digital Input
Relay RuntimeMeter will keep track of how long each relay has operated and display this information.
Relay CyclesMeter will keep track of how many times the relays have cycled and display this information.


4-20 mA Transmitter Output

Accuracy±0.05% FS ±0.001mA
Output SourceRate, total, re-transmit; reverse scaling allowed
Scaling Range1.00 to 23.0 mA
DisableHigh impedance state, less than 1 mA
CalibrationFactory calibrated 4.00 to 20.00 mA
Underrange1.0 mA, 3.5 mA, or 3.8 mA (If input < 3.5 mA); or or Off; user selectable
Overrange20.5 mA, 20.8 mA, or 23.0 mA (If input > 20.5 mA); or Off; user selectable
Isolation500 V input-to-output
Temperature Drift0.5 μA/°C max from -40 to 75°C ambient
External Loop Power Supply7.0 VDC to 30.0 VDC maximum
Output Loop Resistance10-750 Ω @ 24 VDC; 10-1100 Ω @ 30 VDC


On-Board Digital Input

FunctionRemote operation of front-panel buttons, acknowledge/reset relays, reset total, reset max/min values, etc.
Contacts2.1 VDC on contact. Connect normally open contacts across DI+ and DI-
Logic LevelsLogic High: 2.4 to 30 VDC (max)
Logic Low: 0 to 0.9 VDC


MeterView XL Programming Software

AvailabilityFree download from www.predig.com/meterviewxl
System RequirementsMicrosoft® Windows® 7 & 10
CommunicationsUSB 2.0 (Standard USB A to USB B) Cable provided
ConfigurationConfigure all parameters on the meter. Configure meters one at a time.
Configuration FilesGenerate with or without meter connected; Save to file for later use.
USB Power ConnectionMeter is powered by USB connection during programming, if 4-20 mA loop is not connected.
CompatibilityPrograms created for Loop Leader and Loop Leader+ may be run on either meter. Programs created for VantageView+ and ProtEX+ can be run on either meter. No other program sharing is permissible.


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 ImmunityEN 61326-1
EMC requirements for Electrical equipment for measurement, control, and laboratory use – industrial use

MeterView XL Programming Software

Free, PC-based, MeterView XL software that connects to the meter via a micro USB cable is available for programming and setup of the meters. This software greatly simplifies the programming process and also allows the user to save configuration files for later use. The meter will also be powered by the USB connection so no additional power is needed during programming.

MeterView XL Software
For more information visit www.predig.com/meterviewxl

Dimensions

PD6600 Dimensions


Notes:

  1. Panel cutout required: 1.772" x 3.622" (45mm x 92mm)
  2. Panel thickness: 0.040 - 0.250" (1.0mm - 6.4mm)
  3. Mounting brackets lock in place for easy mounting
  4. Clearance: Allow 6" (152 mm) behind the panel

Connections

Connectors Labeling

PD6600 -LNN Connections

-LNN Base Meter (2 Open Collectors Standard)

PD6600 -L2N Connections

-L2N Option (2 Solid-State Relays)

PD6600 -L3N Connections

-L3N Option (4-20 mA Output)

PD6600 -L5N Connections

-L5N Option (2 Solid-State Relays and 4-20 mA Output)

USB Connection Location

PD6600 USB Connection

USB cable plugs into side of meter

Wiring Diagrams

For existing applications, one of the great benefits of loop-powered meters is that they get their power directly from the 4-20 mA loop and thus require no additional wiring. All a user has to do is break the existing loop and wire in the meter.

Input Loop (4-20 mA) Connections

The following figures show a 4-20 mA loop connected to the meter. The first figure shows the connection without the backlight and the second shows the connection with the backlight. The meter is powered by the 4-20 mA current loop.

PD4-6600 4-20mA Connection without Backlight

4-20 mA Input Connection without Backlight

PD4-6600 4-20mA Connection with Backlight

4-20 mA Input Connection with Backlight

Digital Input Connections

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-.

PD4-6600 Digital Input Connection

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.

PD4-6600 4-20mA Output Connection

Solid-State Relay Connections

Relay connections are made to a four-terminal connector. Each relay’s C terminal is common only to the normally open (NO) contact of the corresponding relay.

PD4-6600 Solid State Relay Connection

Open Collector Outputs Connections

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.

PD4-6600 Open Collector Outputs Connection
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