Precision Digital PD6928 User guide

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

PRECISION DIGITAL CORPORATION

233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]

www.predig.com

• Fully-Approved Explosion-Proof & Intrinsically Safe Loop-Powered Flow Rate/Totalizers

• 4-20 mA Input Displayed with ±0.02% of Full-Scale Accuracy

• 1.5 Volt Drop (4.7 Volt Drop with Backlight)

• 0.7" (17.0 mm) 5 Alphanumeric Characters Top Display

• 0.4" (10.2 mm) 8 Alphanumeric Characters Bottom Display

• 20-Segment Bargraph Standard

• Display Mountable at 0°, 90°, 180°, & 270°

• CapTouch Through-Glass Button Programming with Normal and Delayed Modes

• Loop-Powered Backlight with Red Backlight for Alarm Conditions

• 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

• (2) Open Collector Outputs Standard; Assignable to Pulse, Alarm, Timer, or Stopwatch

• (2) Optional Loop-Powered Solid-State Relays; Assignable to Alarm, Control, Timer, 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

• HART® Protocol Transparent

• Enable and Disable Backlight from Menu

• Operating Temperature Range: -40 to 75°C (-40 to 167°F)

• Installation Temperature Range: -55 to 75°C (-67 to 167°F)

• Conformal Coated PCBs for Dust & Humidity Protection

• Password Protection

• CSA Certified for Explosion-Proof / Dust-Ignition Proof / Flame-Proof

• ATEX and IECEx Certified as Intrinsically Safe

• Flange for Wall or Pipe Mounting; Loop for Stainless Steel Tag; Holes for Tamper-Proof Seal

• Explosion-Proof, IP68, NEMA 4X Die-Cast Aluminum & Stainless Steel Enclosures

• 3-Year Warranty

IECEx

MeterView XL

USB Install

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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The Complete PD6900 Series

Plastic Enclosures - General Purpose

PD6907-GP-PL

Feet & Inches Meter

PD6908-GP-PL

Process Meter

PD6928-GP-PL

Flow Rate/Totalizer

Aluminum Enclosures - Explosion-Proof & I.S.

PD6907-HA-AL

Feet & Inches Meter

PD6908-HA-AL

Process Meter

PD6928-HA-AL

Flow Rate/Totalizer

Stainless Steel Enclosures - Explosion-Proof & I.S.

PD6907-HA-SS

Feet & Inches Meter

PD6908-HA-SS

Process Meter

PD6928-HA-SS

Flow Rate/Totalizer

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

3

Table of Contents

Introduction .......................................................................................................... 6

Key Features ........................................................................................................ 7

Ordering Information ......................................................................................... 12

Accessories ................................................................................................... 12

Specifications..................................................................................................... 14

Display ............................................................................................................ 14

General ........................................................................................................... 14

Enclosure ....................................................................................................... 15

Input ................................................................................................................ 15

Rate/Totalizer ................................................................................................. 15

Batch Control ................................................................................................. 16

Common Open Collector & Relay Specifications ....................................... 16

Open Collector Outputs ................................................................................ 16

Solid-State Relays ......................................................................................... 16

4-20 mA Transmitter Output ......................................................................... 16

On-Board Digital Input .................................................................................. 17

MeterView XL Software ................................................................................. 17

Compliance Information .................................................................................... 18

Hazardous Area Approvals ........................................................................... 18

Electromagnetic Compatibility ..................................................................... 18

EU Declaration of Conformity ........................................................................... 19

Safety Information ............................................................................................. 19

Installation .......................................................................................................... 19

Unpacking ...................................................................................................... 19

Mounting ............................................................................................................. 20

Dimensions .................................................................................................... 20

Cover Jam Screw ........................................................................................... 20

Connections ....................................................................................................... 21

Display & Options Modules .......................................................................... 21

Connectors Labeling ..................................................................................... 22

Wiring Diagrams ................................................................................................ 24

Intrinsically Safe Wiring ................................................................................ 24

I/O Parameter Table .................................................................................... 24

Explosion-Proof Wiring ................................................................................. 24

Current Loop (4-20 mA) Connections ......................................................... 24

Digital Input Connections ............................................................................ 25

4-20 mA Output Connections ...................................................................... 25

Solid-State Relay Connections.................................................................... 25

Open Collector Output Connections............................................................ 25

Setup and Programming ................................................................................... 26

Overview ......................................................................................................... 26

CapTouch Buttons ........................................................................................ 26

CapTouch Buttons Delay ............................................................................ 26

Disabling the CapTouch Buttons ................................................................. 26

CapTouch Button Tips & Troubleshooting .................................................. 26

MeterView XL Programming Software ......................................................... 27

CapTouch Buttons and Status Indicators ................................................... 28

Display Functions & Messages .................................................................... 29

Main Menu ...................................................................................................... 33

Setting Numeric Values ............................................................................... 34

Scaling the 4-20 mA Input (INPUT) ................................................................... 35

Available Engineering Units ........................................................................ 36

Additional Unit Classes and Units ............................................................... 36

Setting Custom Units (CUSTOM) .................................................................. 37

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Setting the Display Features (DISPLAY) ..................................................... 37

Changing the Engineering Units (UNITS) ................................................... 37

Changing the Decimal Point (DEC.PT) ......................................................... 37

Enabling or Disabling Commas on the Bottom Display (COMMA) ................ 38

Display Capabilities Optimization (TOP and BOTTOM) ................................ 38

Using 13 Digits to Display Total .................................................................. 38

Configuring the Display (TOp and BOTTOM) ................................................ 39

Programming the Bargraph (BARGRAPH) .................................................... 40

Programming the Outputs (OUTPUT) ........................................................... 40

Open Collector Outputs

(

OPEN COLLECTR

)

................................................. 41

Solid-State Relay Outputs (RELAY) ............................................................ 46

Isolated 4-20 mA Output (4-20 mA) ............................................................ 53

Output Manual Control (CONTROL) ............................................................. 53

Advanced Features Menu (ADVANCE) .......................................................... 54

Advanced Rate Setup (ADV RATE) ............................................................ 54

Additional Engineering Units ....................................................................... 61

Advanced Total and Grand Total Setup (ADV TOTAL & ADV GTOTAL) .... 62

Low-Flow Cutoff (CUTOFF).......................................................................... 63

Noise Filter (FILTER) ................................................................................. 63

Enabling Password Protection (PASSWRD) ................................................. 64

Programmable Function Keys User Menu (USER) ...................................... 65

Changing System Settings (SYSTEM) ......................................................... 67

Meter Operation ................................................................................................. 69

CapTouch Buttons Operation ...................................................................... 69

CapTouch Buttons ........................................................................................ 69

CapTouch Button Tips & Troubleshooting .................................................. 69

Function Keys Operation .............................................................................. 70

Digital Input Operation .................................................................................. 70

Maximum/Minimum Readings ...................................................................... 70

Runtime & Cycle Count (INFO) .................................................................... 71

Changing Engineering Units ........................................................................ 71

Batch Controller Operation ............................................................................... 72

Default Batch Control Operation .................................................................. 72

Batch Control Operation Example ............................................................... 72

Manual Batch Control ................................................................................... 75

Automatic Batch Control .............................................................................. 76

Troubleshooting................................................................................................. 77

Reset Meter to Factory Defaults ................................................................... 77

Determining Software Version ..................................................................... 77

Factory Default Settings .............................................................................. 78

Troubleshooting Tips .................................................................................... 79

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Table of Figures

Figure 1. Enclosure Dimensions – Front View .................................................... 20

Figure 2. Enclosure Dimensions – Side View ..................................................... 20

Figure 3. Enclosure Dimensions – Top View ...................................................... 20

Figure 4. Connector Labeling for PD6928-HA-##-LNN ....................................... 22

Figure 5. Connector Labeling for PD6928-HA-##-L2N ........................................ 22

Figure 6. Connector Labeling for PD6928-HA-##-L3N ........................................ 23

Figure 7. Connector Labeling for PD6928-HA-##-L5N ........................................ 23

Figure 8. 4-20 mA Input Connection without Backlight ..................................... 24

Figure 9. 4-20 mA Input Connection with Backlight ........................................... 24

Figure 10. Digital Input Connections ................................................................... 25

Figure 11. 4-20 mA Output Connections ............................................................. 25

Figure 12. Solid-State Relay Connections ........................................................... 25

Figure 13. Open Collector Output Connections.................................................. 25

Video

Watch the Loop-Powered Meters Video

Click or Scan

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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.

• 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.

• Failure to follow installation guidelines could
result in death or serious injury. Make sure only
qualified personnel perform the installation.

• For Explosion-Proof / Dust-Ignition Proof / Flame-
Proof applications, never remove the meter cover
in explosive environments when the circuit is live.

• Cover must be fully engaged to meet Explosion-
Proof / Dust-Ignition Proof / Flame-Proof
requirements.

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

The PD6928 ProtEX+ loop-powered explosion-proof
& intrinsically safe flow rate/totalizer can be installed
virtually anywhere to provide convenient and
informative display of any 4-20 mA signal. They can
operate down to -40°C and be installed in areas that
get as cold as -55°C, however the display will cease
functioning. One of the most convenient features of
these instruments is their dual-line display which is
typically used to display the flow rate on the
5-character alphanumeric top display and flow total,
flow grand total, or a tag on the 8-character
alphanumeric bottom display. The top display uses
12-segment, and the bottom display uses 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.

These flow rate/totalizers 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 (4.7 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, IP68
explosion-proof, an operating temperature range of

-40 to 167°F (-40 to 75°C), conformally coated PCBs,
and a backlit LCD that can be read in bright sunlight
or dimly lit areas.

The ProtEX+ Series is CSA Certified as Explosion­Proof / Dust-Ignition Proof / Flame-Proof and ATEX
and IECEx Certified as Intrinsically Safe. The
enclosure itself is ATEX, IECEx, CSA, and UL
approved.

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.
For more details, see the MeterView XL manual. Four
CapTouch through-glass buttons are available to
operate the instrument without removing the cover.

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 or pulse output. The
digital input can be used to remotely reset the total, to
start/stop a timer/stopwatch, and more. The relays
can be programmed for alarm indication, sample,
timer, batch control, or stopwatch.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Key Features

2X More Informative Display

The PD6928 display offers a 50% larger display area
and is twice more informative than previous
generations of loop-powered meters. Featuring an
alphanumeric dual-line display and a 20-segment
bargraph, reading and understanding process values
is easy and intuitive. The addition of status indicators
provides a quick glance at alarm conditions, relays,
process trends, and more. 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.

Backlight Turns Red on Alarm

When an alarm occurs, the display can be
programmed to turn red, flash, and display an alarm
indicator . In addition, a unique custom alarm
message for each of the two relays and two open
collectors can be displayed on the bottom display.
These features can be activated even if no relay or
open collector is connected.

CapTouch Through-Glass
Buttons

The PD6928 is equipped with four capacitive sensors
that operate as through-glass buttons so that it can be
operated without removing the cover (and exposing
the electronics) in a hazardous area. CapTouch
buttons are designed to work under any lighting
condition and to protect against false triggering. They
can be disabled for security via a switch on the
display module.

CapTouch buttons have two modes of operation:
Normal and Delayed. Delayed mode prevents
accidental trigger of the buttons. In the Delayed
mode, the buttons enter into a low sensitivity state
(sleep) and they ignore quick button presses after 20
seconds of inactivity. To wake up the buttons, press
and hold any button for more than 2 seconds, the
buttons respond normally.

Solid State Relays 1-2
Indicators

Predefined
Rate Units

0.7" (17.0 mm) High

5-Character, Alphanumeric

12-segment

Password Protection

Trend

Indicators

CapTouch Buttons

Self-Calibration

0.4" (10.2 mm) High

8-Character, Alphanumeric

14-segment

Total or Grand Total

Indicator

Alarm Indicator

20-Segment
Bargraph

Two-Color
Backlight

CapTouch Buttons /
Function Keys

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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Commas on 8-Digit Totalizer for
Easy Reading

It may seem like a simple thing, but adding commas
to an eight-digit number makes it easier to read:

Predefined and Custom Units

The PD6928 flow rate/totalizer has the most common
predefined rate and volume units. If the desired unit is
not available, the user can program a custom unit.

14-Segment Characters

Notice how much better letters like “T”, “N” and “K”
appear as 14-segment characters on the bottom display
vs. 7-segment characters found on other meters.

Enable / Disable Backlight

The backlight may be enabled or disabled using the
System - Backlight menu. The backlight is enabled by
default, but the input must be wired appropriately for
the backlight to function. See Enabling or Disabling
the Backlight (BACKLITE) on page 68 for details.

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 batch
control 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 (flow rate, total, 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.

Password Protection

A password can be set up for programming security to
prevent unauthorized changes to the programmed
parameter settings.

Free MeterView XL
Programming Software

The fastest and easiest way to program the meter is
using the free Meterview XL programming software.
This software greatly simplifies the programming
process and allows the user to save configuration files
for later use.

The meter connects to the PC via a provided micro­USB cable and is powered by the USB connection, so
no additional power is needed during programming.

Easy Wiring & Service

The PD6928 has been designed for easy wiring and
servicing. All connections are made to removable
screw terminal blocks. There are no exposed printed
circuit boards.

Wide Viewing Angle

The window and display module have been optimized
to provide a wide viewing angle of approximately
±40°; nearly twice that of the competition.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Modern and Practical Enclosure

The PD6928 NEMA 4X, IP68 enclosure provides
serious protection from the elements, high impact,
corrosion, and electrical interference. Plus, the
extensive worldwide agency approvals allow it to be
installed virtually anywhere.

Aluminum or Stainless Steel Enclosure

The enclosure is available in copper-free (0.3%),
die-cast aluminum and type 316 stainless steel.

Built-In Flange for Pipe Mounting
The built-in mounting flange allows easy mounting to

walls or pipes.

A slot on the back makes it easy to center the unit on
a pipe. There are two ¾" NPT threaded conduit holes
for wiring.

Grounding Screw

A grounding screw is provided on the top of the
enclosure.

SS Tag Attaching Loop

The enclosure is also equipped with a loop at the top
to easily attach a PDA-SSTAG stainless steel tag.

Tamper-Proof Capability

The instrument can be made tamper-proof by
inserting a wire through the built-in loop on the base
of the enclosure and a hole in the lid of the enclosure
and securing this wire with a lead seal.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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Rate/Totalizer Features

Display Flow Rate & Total at the
Same Time

The PD6928 can display flow rate and total at the same
time. In addition, the meter can toggle between the rate
and total and their corresponding units as the following
example illustrates.

Total Limit & Initial Value

The Advanced – Total Count menu allows the digit
limit to be selected between 8-digit (bottom display
only) and 13-digit (uses top and bottom display to
display the full number).
The user can set the initial value at which the total
and grand total should start counting.

Using 13 Digits to Display Total

The top and bottom displays can be set up to display
a 13-digit total.

Note: The number above should be read as

6,843,276,349,157

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.

Rate in Units Per Second, Minute,
Hour, or Day

The user may select a rate time base in units per
second, minute, hour, or day. The time base is the
amount of time over which the rate parameter will
totalize. For example, if the rate was 10 gallons/min
(and stayed constant for one minute), then the total
would increase by 10 every minute.

4-20 mA Output for Rate or Total

The 4-20 mA output can be assigned to the rate or
the total.

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.

Total Reset Capabilities

The total and grand total can be reset using a
CapTouch button, an external contact closure on the
digital input, or MeterView XL software. In addition,
both total and grand total reset can be password
protected to prevent unauthorized resets.

Total Reset via CapTouch Button

The CapTouch function key F2 is set up to reset the
total. If reset grand total is enabled, it is possible for the
user to reset either the total or the grand total without
removing the cover or the need for external devices.

Total Reset via Digital Input

The PD6928’s digital input can also be used to reset the
total or grand total.

Total Reset Password Protection

Total and grand total passwords can be set to prevent
resetting the total or grand total unless a password is
entered. Grand total reset can be disabled through
the meter interface, and it can also be permanently
disabled.

Non-Resettable Grand Total

The user can set up the grand total to be non-resettable by
selecting YES at the PERMLOC menu; see page 62 for
details. Once this is done, the grand total can never be reset.

-+

DI

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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Batch Control Capabilities

The meter can be equipped with two solid-state relays
that may be set up for batch control. Selecting batch
control for relay 1 enables the batching features on the
meter. The top display changes to show the total and the
bottom display changes to show the batch preset. The
function keys also change for batch control functions
such as F1 starts a batch, F2 opens the preset menu to
allow the preset value to be changed, and F3 stops the
currently running batch. Enabling batch control for
relay 1 allows access to the batch menu under relay 2.
The second relay may be programmed as a preclose
relay or as another batching relay with its own preset
amount.

Manual or Automatic Operation

Batching can be set to either manual or automatic
operation.

If set to automatic, then a delay before the next batch
starts must be programmed.

Count Up or Down Batching

The batch total can be set to count up or down.

Input Signal Conditioning

To satisfy applications that require scaling in ways
other than the usual 2-point linear method, the
PD6928 can also be scaled for square root (DP flow),
programmable exponent (open channel flow) or round
horizontal tank volume calculation.

Square Root Linearization

The square root function can be used to linearize the
signal from a differential pressure transmitter and
display flow rate in engineering units.

Programmable Exponent
Linearization

The programmable exponent can be used to linearize
the signal from level transmitters in open-channel flow
applications using weirs and flumes.

The PD6928, 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.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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Ordering Information

Hazardous Area Instruments

ProtEX+ PD6928 • Flow Rate/Totalizers • Aluminum Enclosure

Model

Description

PD6928-HA-AL-LNN

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, No Options

PD6928-HA-AL-L2N

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, Two Solid-State Relays

PD6928-HA-AL-L3N

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, 4-20 mA Analog Output

PD6928-HA-AL-L5N

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, Two Solid-State Relays
& 4-20 mA Analog Output

ProtEX+ PD6928 • Flow Rate/Totalizers • Stainless Steel Enclosure

Model

Description

PD6928-HA-SS-LNN

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, No Options

PD6928-HA-SS-L2N

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, Two Solid-State Relays

PD6928-HA-SS-L3N

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, 4-20 mA Analog Output

PD6928-HA-SS-L5N

Loop-Powered Explosion-Proof & Intrinsically Safe Flow Rate/Totalizer, Two Solid-State Relays
& 4-20 mA Analog Output

Notes:

1. All models come with bargraph, two open collector outputs, and one digital input standard.

2. The meter comes standard with two ¾" NPT conduit holes. To order models with M20 conduit holes instead, add -21 at the end
of the part number (e.g. PD6928-HA-AL-LNN-21)

Accessories

Model

Description

PD659

Signal Isolators, Splitters, and Conditioners

PD9501

Multi-Function Calibrator

PD9502

Low-Cost Signal Generator

PDA1002

6" DIN Rail Mounting Kit

PDA1024-01

24 VDC Transmitter Power Supply for DIN Rail

PDA6846

Steel 2" U-Bolt Kit. All Material: Zinc Plated Steel; (1) U-Bolt for 2" Pipe with (2) Washers,
(2) Lock Washers, and (2) Nuts

PDA6846-SS

Stainless Steel 2" U-Bolt Kit. All Material: Stainless Steel; (1) U-Bolt for 2" Pipe with (2) Washers,
(2) Lock Washers, and (2) Nuts

PDAPLUG75

3/4" NPT 316 Stainless Steel Conduit Plug with Approvals

PDARED-M75-F50

M-3/4" NPT to F-1/2" NPT Reducer with Approvals

PDARED-M75-FM20

M-3/4" NPT to F-M20 Reducer with Approvals

PDA-SSTAG

Custom Stainless Steel Tag (see website for convenient ordering form)

• Accessories do not carry hazardous area approvals unless otherwise specified 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.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

13

PDA1024-01 24 VDC Power Supply

The PDA1024-01 is a DIN rail mounted 1.5 A,
24 VDC power supply that can be used to power
the 4-20 mA transmitter.

PDA6846 2" U-Bolt Kits

The PDA6846 U-Bolt Kits provide a convenient way to
mount the meter to 1.5" or 2" pipes. They are
available in steel and stainless steel.

PDA-SSTAG Stainless Steel Tag

The PDA-SSTAG is a laser etched stainless steel tag
that can be customized with three lines of text.
Each tag comes with a stainless steel wire and lead
seal for easy mounting wherever you need.

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 wall plug is provided with the instrument.
Optional USB power bank is available.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

14

Specifications

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

Display

Display

Dual-line LCD with backlight.
Both lines: alphanumeric
Top: 0.7" (17.8 mm) 5 digits, 12-segment
Bottom: 0.4" (10.2 mm) 8 characters,
14-segment
Display may be programmed to turn red and flash
a user-defined message on alarm condition.

On-Screen
Indicators

See CapTouch Buttons and Status Indicators
on page 28 for details.

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)

Backlight

Powered by 4-20 mA loop
Intensity varies with signal level

Bargraph

20 segments (100% label at top fixed)

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 the bottom display only

Dual-Scale
Feature

If the totalizer is disabled, the 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
Indication

Programmable: loop-powered red backlight,
flashing display, alarm symbol , bargraph
segment flashes on alarm.

Custom
Alarm
Messages

Programmable for each relay/open collector:
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

Four CapTouch through-glass buttons when
cover is installed. The CapTouch buttons can
be used with the cover removed.
Free PC-based USB MeterView XL
programming software.

Environmental

Operating temperature range:

-40 to 75°C (-40 to 167°F)

Storage temperature range:

-55 to 85°C (-67 to 185°F)

Installation temperature range:

-55 to 75°C (-67 to 167°F)
(The display ceases to function, however

inputs and outputs continue to operate)
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 the bypass
value are displayed immediately.

Recalibration

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

If 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.

Password

There 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
Memory

Total and Grand Total values, and all
programmed settings are stored in non­volatile memory for a minimum of ten years if
power is lost.

Normal Mode
Rejection

64 dB at 50/60 Hz

Connections

Removable screw terminal blocks
Display terminals: accept 16 to 30 AWG wire
Relay terminals: accept 12 to 26 AWG wire
4-20 mA output: accept 16 to 30 AWG wire

Tightening
Torque

Display terminals: 2.5 lb-in (0.28 Nm)
Relay terminals: 4.5 lb-in (0.5 Nm)
4-20 mA output terminals: 2.5 lb-in (0.28 Nm)

Overall
Dimensions

5.25" x 5.65" x 4.80" (133 x 144 x 122 mm)
(W x H x D)

Weight

Aluminum: 5.1 lbs (2.3 kg)
Stainless Steel: 9.4 lbs (4.3 kg)

Warranty

3 years parts and labor. See Warranty
Information and Terms & Conditions on
www.predig.com for complete details.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

15

Enclosure

Material

AL Models:

ASTM A413 LM6 die-cast aluminum,

copper-free, enamel coated.

-SS Models:

ASTM A743 CF8M investment-cast

316 stainless steel

Gasket

Fluoroelastomer

Rating

NEMA 4X, IP68 explosion-proof

Color

-AL: Blue; -SS: Silver

Window

Borosilicate glass

Conduits

Two ¾" NPT threaded conduit openings.
M20 conduits are available. See Ordering
Information on page 12 for details.

Flange

Built-in flange for wall and pipe mounting.

Tamper-Proof
Seal

Enclosure lid may be secured with
tamper-proof seal.

ATEX &
IECEx
(Enclosure
only)

Flameproof protection

II 2GD
Ex db IIC Gb
Ex tb IIIC Db
IP66/IP68
Tamb: -55°C to +85°C
Certificate No.: Sira 19ATEX1252U
Certificate No.: IECEx SIR 19.0075U

CSA
(Enclosure
only)

Class I, Division 1, Groups A, B, C, D
Class II, Division 1, Group E, F, G;
Class III
Ex db IIC Gb
Ex tb IIIC Db
Class I, Zone 1, AEx db IIC Gb;
Zone 21, AEx tb IIIC Db
IP66/IP68/TYPE 4X
Tamb: -55°C to +85°C
Certificate No.: 80011200

UL
(Enclosure
only)

Class I, Division 1, Groups A, B, C and D
Class II, Division 1, Groups E, F and G
Class III;
Class I, Zone 1, AEx db IIC Gb
Zone 21, AEx tb IIIC
Ex db IIC Gb
Ex tb IIIC Db
IP66/IP68/TYPE 4X
Tamb: -55°C to +85°C
Certificate Number: E518920

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: 4.7 V maximum

Equivalent
Resistance

Without backlight: 75 Ω @ 20 mA
With backlight: 235 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

Rate: Linear (2-32 points), square root, or
programmable exponent
If the totalizer is disabled, PV1 and 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.

Rate/Totalizer

Rate Display

Top display: -9999 to 99999;
Bottom display: -9,999,999 to 99,999,999
(with commas)

Total & Grand
Total Display

Top display: 0 to 99999;
Bottom display: 0 to 99,999,999
(with commas)

13-Digit Total
& Grand Total

Up to 9,999,999,999,999 using both lines
with 13-digit total feature enabled.

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.

Time Base

Seconds, Minutes, Hours, Days

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 & Grand
Total Reset

Via CapTouch button, external contact
closure on digital input, or MeterView XL.

Total & Grand
Total Reset
Passwords

Total and grand total passwords may be
entered to prevent resetting the total or grand
total unless a password is entered.

Non­Resettable
Grand Total

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 has been programmed as

“non-resettable” the feature CANNOT be disabled.

Non-Volatile
Memory

Total and Grand Total values are stored in
non-volatile memory for a minimum of ten
years if power is lost.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

16

Batch Control

Methods

Automatic or Manual, count up or count down

Manual Batch
Start

Pressing F1 function key starts the batch

Manual Batch
Pause/Stop

Pressing F3 once pauses the batch, pressing
it twice cancels the batch

Automatic
Batching

The ProtEX+ can be used as an automatic
batch controller where batches run
continuously without operator input

Batching
Relay
Operation

Single or dual-relay batching with optional
preclose for dual-stage operation

Batch Preset

Set 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
Preclose

For two-stage batch application, a preclose
value can be set to close the main flow line.

Automatic
Batch Restart
Delay

1 to 9,999 seconds. The batch will
automatically restart after completion
of the last batch.

Common Open Collector & Relay 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

Alarm, Timer, Stopwatch, or Disable

Alarm Output
Source

Assign to rate, total, grand total, 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: loop-powered red backlight,
flashing display, alarm symbol , bargraph
segment flashes on alarm.

Custom
Alarm
Messages

Programmable for each relay/open collector:
8 characters maximum; displayed every 10 sec for
1 sec on bottom display. May be turned off.

Alarm
Acknowledge

CapTouch 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

Pulse output based on Rate, Total, Grand
Total, or Test Frequency, Alarm, Timer, Total
Reset, Stopwatch on/off, or Disable

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 Rate, Total, Grand Total or Digital
Input

Solid-State Relays

Rating

250 VAC/VDC @ 0.5 A resistive
38 VA; 250 VAC; 0.3 A pilot duty
(inductive)
13 VA; 250 VDC; 0.3 A pilot duty (inductive)

Noise
Suppression

Metal oxide varistors across outputs

Relay
Assignment

Alarm, Sample, Timer, Batch, Stopwatch
on/off, or Disable

Alarm Output
Source

Assign to Rate, Total, Grand Total, or Digital
Input

Relay
Runtime

Meter will keep track of how long each relay
has operated and display this information.

Relay
Cycles

Meter 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
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 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

7.0 VDC to 30.0 VDC maximum

Output Loop
Resistance

10-750 Ω @ 24 VDC; 10-1100 Ω @ 30 VDC

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

17

On-Board Digital Input

Function

Remote operation of front-panel buttons,
acknowledge/reset relays, reset total, reset
max/min values, etc. See User section of
Display Functions & Messages on page 29
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

MeterView XL Software

Availability

Free download from www.predig.com

System
Requirements

Microsoft® Windows® 7 & 10

Communicati
ons

USB 2.0 (Standard USB A to Micro USB B)
Cable provided

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 latest MeterView XL programming
software and manual, visit predig.com/meterviewxl.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

18

Compliance Information

Hazardous Area Approvals

CSA

Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Zone 1, Ex d IIC T6
Ta = -55 to 75°C.
Enclosure: Type 4X & IP66/IP68.
Certificate number: 2325749

ATEX

II 1 G D

Ex ia IIC T4 Ga
Ex ia IIC T200°C Da
Ta = -40 to 75°C
Enclosure: Type 4X & IP66/IP68
Install per Control Drawing DW2636
(contained within LIM6908-2)
Certificate number: CML 18ATEX2089X

IECEx

II 1 G D
Ex ia IIC T4 Ga
Ex ia IIC T200°C Da
Ta = -40 to 75°C
Enclosure: Type 4X & IP66/IP68
Install per Control Drawing DW2636

(contained within LIM6908-2)
Certificate number: IECEx CML 18.0050X

ATEX/IECEx Special Conditions for Safe Use

The following conditions relate to safe installation
and/or use of the equipment.

• The equipment loop/power port shall be connected

to an intrinsically safe barrier with Uo ≥ 5.8V

• The 4-20 mA input port shall be connected to an

intrinsically safe barrier with Uo ≥ 5.1V

• The PD6928-HA-AL enclosure is manufactured from

aluminum. In rare cases, ignition sources due to
impact and friction sparks could occur. This shall be
considered during installation, particularly if the
equipment is installed in a Zone 0 location.

• All cable entries into the equipment shall be via cable

glands or conduit which provide a minimum degree
of protection of IP54.

• The equipment may not have 500V isolation

between the circuit and earth. This shall be taken
into account when installing the equipment.

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.

For European Community:

The PD69XX Series must be installed in accordance
with the ATEX directive 2014/34/EU, the product
certificates CML 18ATEX2089X, IECEx CML

18.0050X and the product manual.

Electromagnetic Compatibility

EMC Emissions

• CFR 47 FCC Part 15 Subpart B Class A
emissions requirements (USA)

• ICES-003 Information Technology
emissions requirements (Canada)

• AS/NZS CISPR 11 Group 1 Class A
ISM emissions requirements
(Australia/New Zealand)

• EN 55011 Group 1 Class A ISM
emissions requirements (EU)

• EN 61000-6-4 Emissions requirements
for Heavy Industrial Environments ­Generic

EMC Emissions
and Immunity

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

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

19

EU Declaration of

Conformity

For shipments to the EU and UK, a Declaration of
Conformity was printed and included with the product.
For reference, a Declaration of Conformity is also
available on our website www.predig.com/docs.

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 PD6928 loop-powered
flow rate/totalizers, the hazardous location
installation instructions for the transmitter,
PD6928 loop-powered flow rate/totalizer, and
associated apparatus (barrier) must be
compatible.

• PD6928 loop-powered flow rate/totalizers 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.

Installation

To access the connectors, remove the enclosure
cover and unclip the display module by pulling it from
the enclosure. The display module may be
disconnected from the options module to facilitate
wiring to the options module.

Refer to Control Drawing DW2636 (contained within

LIM6908-2) for details related to intrinsically safe field

wiring.

Explosion-Proof / Dust-Ignition Proof / Flame-Proof

• Disconnect from supply before opening
enclosure. Keep cover tight while circuits are live.
Conduit seals must be installed within
18" (450mm) of the enclosure.

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.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

20

Mounting

The PD6928 has a slotted mounting flange that may
be used for pipe mounting or wall mounting.
Alternatively, the unit may be supported by the
conduit using the conduit holes provided. Refer to
Figure 1 and Figure 2.

• Do not attempt to loosen or remove flange bolts
while the meter is in service.

Dimensions

All units: inches [mm]

Figure 1. Enclosure Dimensions – Front View

Figure 2. Enclosure Dimensions – Side View

Figure 3. Enclosure Dimensions – Top View

Cover Jam Screw

The cover jam screw should be properly installed
once the meter has been wired and tested in a safe
environment. The cover jam screw is intended to
prevent the removal of the meter cover in a flame­proof environment without the use of tools. Using a
M2 hex wrench, turn the screw clockwise until the

screw contacts the enclosure’s base. Turn the screw

an additional 1/4 to 1/2 turn to secure the cover.

• Excess torque may damage the threads, screw
head, and/or wrench.

5.25" (133 mm)

3.35" (85.1 mm)

2.25"

(57.2 mm)

0.32"

(8.2 mm)

5.65"

(144 mm)

4.80"

(122 mm)

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

21

Connections

To access the connectors, remove the enclosure cover and unclip the display module by pulling it from the enclosure.
Signal, backlight, open collector, and digital input connections are made to removable connectors on the display
module. Relays and 4-20 mA output connections (if installed) are made to removable connectors on the options
module mounted in the base of the enclosure. The display module may be disconnected from the options module to
facilitate wiring to the options module. Grounding connections are made to the two ground screws provided on the
base of the enclosure, one internal and one external.

• Observe all safety regulations. Electrical wiring should be performed in accordance with all agency
requirements and applicable national, state, and local codes to prevent damage to the meter and ensure
personnel safety.

• Static electricity can damage sensitive components.

• Observe safe handling precautions for static-sensitive components.

• Use proper grounding procedures/codes.

• If the meter is installed in a high voltage environment and a fault or installation error occurs, high voltage may

be present on any lead or terminal.

Display & Options Modules

The display module snaps into built-in rails on the enclosure ensuring a secure and perfect fit every time. No tools are
needed to install or remove it. The options module is screwed into the base of the enclosure. Both modules
completely encase the printed circuit boards.

Options Board (Left) and Display Module (Right)

Options Board Connected to Display Module

Options Board Mounted on the Bottom of Enclosure

Display Module Mounted on Built-In Rails

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

22

Connectors Labeling

The following graphics show the locations of the connectors for each available configuration.

Figure 4. Connector Labeling for PD6928-HA-##-LNN

Figure 5. Connector Labeling for PD6928-HA-##-L2N

USB

Connection

CapTouch

On/Off
Switch

Ribbon Cable

Connector

–+

OC2

–+

OC1

Open Collector

Outputs

DI BL mA

–+–+–

Digital

Input

Backlight

+ Signal

Options Board

USB

Connection

CapTouch

On/Off
Switch

Ribbon Cable

Connector

–+

OC2

–+

OC1

Open Collector

Outputs

NO

C NO

C

Solid State

Relay 2

Solid State

Relay 1

DI BL mA

–+–+–

Digital

Input

Backlight

+ Signal

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

23

Figure 6. Connector Labeling for PD6928-HA-##-L3N

Figure 7. Connector Labeling for PD6928-HA-##-L5N

Options Board

USB

Connection

CapTouch

On/Off
Switch

Ribbon Cable

Connector

–+

OC2

–+

OC1

Open Collector

Outputs

4-20 mA

Output

+

–

DI BL mA

–+–+–

Digital

Input

Backlight

+ Signal

Options Board

USB

Connection

CapTouch

On/Off
Switch

Ribbon Cable

Connector

–+

OC2

–+

OC1

Open Collector

Outputs

NO

C NO

C

Solid State

Relay 2

Solid State

Relay 1

4-20 mA

Output

+

–

DI BL mA

–+–+–

Digital

Input

Backlight

+ Signal

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

24

Wiring Diagrams

Intrinsically Safe Wiring

1. PD6928 installation must be performed in

accordance with control drawings included in the

LIM6908-2, in order to meet agency approval

ratings.

• For ATEX certification, barrier and transmitter
must be ATEX Certified with Entity Parameters

and must be connected per manufacturer’s

instructions.

• Service requiring replacement of internal
components must be performed at the factory.

• Entire meter assembly (electronic assembly) may
be replaced in the field with a unit supplied from
the factory labeled “Field Modification”.

I/O Parameter Table

4-20 mA Loop Input

Switch Port

Ui = 30 V

Ui = 30 V

Ii = 175 mA

Ii = 175 mA

Pi = 1 W

Pi = 1 W

Ci = 0

Ci = 0

LI = 0

LI = 0

Open Collector Outputs

Backlight Terminal

Ui = 30 V

Ui = 30 V

Ii = 175 mA

Ii = 175 mA

Pi = 1 W

Pi = 1 W

Ci = 0

Ci = 0

LI = 0

LI = 0

Power Supply Input

mA Output

Ui = 30 V

Ui = 30 V

Ii = 175 mA

Ii = 175 mA

Pi = 1 W

Pi = 1 W

Ci = 0

Ci = 0

LI = 0

LI = 0

Relay Outputs

Ui = 30 V

Ii = 1000 mA

Pi = 1 W

Ci = 0.013 uF

LI = 0

Uo = 11.55 V

Io = 1 mA Po = 0.012 W

Explosion-Proof Wiring

Current Loop (4-20 mA) Connections

Signal connections are made to a three-terminal
connector. See Connectors Labeling on page 22. The
following figures show a 4-20 mA current loop
connected to the meter. Figure 8 shows the
connection without the backlight and Figure 9 shows
the connection with the backlight (the backlight can be
disabled/enabled in the SYSTEM menu, if connected).
The meter and the backlight are powered by the
4-20 mA current loop.

There are no switches or jumpers to set up for the
input. Setup and programming are performed through
the CapTouch buttons or PC-based software.

Figure 8. 4-20 mA Input Connection without Backlight

Figure 9. 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.

--+

BL mA

4-20 mA

Transmitter

+-

Power

Supply

+

-

--+

BL mA

4-20 mA

Transmitter

+-

Power

Supply

+

-

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

25

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-.

Figure 10. Digital Input Connections

4-20 mA Output Connections

Connections for the 4-20 mA transmitter output are
made to the connector terminals labeled 4-20 mA
Output on Figure 6, page 23. The 4-20 mA output
must be powered from an external power supply.

Figure 11. 4-20 mA Output Connections

Solid-State Relay Connections

Relay connections are made to two-terminal
connectors, as shown on Figure 5, page 22. Each

relay’s C terminal is common only to the normally

open (NO) contact of the corresponding relay.

Figure 12. Solid-State Relay Connections

Open Collector Output Connections

Open collector output 1 and 2 connections are made
to terminals labeled OC1 and OC2 on Figure 4, page

22. Connect the alarm or pulse input device as shown
below.

Figure 13. Open Collector Output Connections

-+

DI

-+

Device with

4-20 mA

Input

-+

Power

Supply

+-

CNO

CNO

Load

Load

Power

Relay 1

Relay 2

Power
Supply

-+

-++-

OC2 OC1

Alarm

Indicator/

Pulse

Counter

+

-

External DC

Relay

5-30 VDC

150 mA MAX

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

26

Setup and Programming

The meter is factory calibrated prior to shipment to display

0.00 to 100.00, which corresponds to the 4-20 mA input.
The calibration equipment is traceable to NIST standards.

Overview

There are no jumpers to set; setup and programming
is done through the CapTouch buttons or the free
MeterView XL PC-based software.

The meter may be powered via the micro-USB
connection located on the display module for the
purpose of programming only. The backlight will not
work while the meter is powered via the USB
connection.

CapTouch Buttons

The PD6928 is equipped with four capacitive sensors
that operate as through-glass buttons so that it can be
programmed and operated without removing the
cover (and exposing the electronics) in a hazardous
area.

These buttons can be disabled for security by
selecting the Lock setting on the switch located on the
side of the display module, close to the Menu button.

To actuate a button, press one finger to the window
directly over the marked button area. When the cover
is removed, the CapTouch buttons can be used after
the meter completes a self-calibrating routine (hand
symbol flashes). The sensors are disabled when more
than one button is pressed, and they will automatically
re-enable after a few seconds (hand symbol off).

CapTouch Buttons Delay

The CapTouch have two modes of operation: Normal
and Delayed. Use the Delayed mode to prevent
accidental trigger of the buttons. In the Delayed
mode, the buttons enter into a low sensitivity state
(sleep) and they ignore quick button presses after 20
seconds of inactivity. To wake up the buttons, press
and hold any button for more than 2 seconds, the
buttons respond normally.

Disabling the CapTouch Buttons

The CapTouch buttons can be disabled by moving the
slide switch, located on the display module to the
Lock position; see the image below.

CapTouch Button Tips & Troubleshooting

The CapTouch buttons are designed to work under
any lighting condition and to protect against false
triggering. If the CapTouch buttons are not needed
during operation, they can be disabled (slide switch to
Lock).

• To remove cover with power applied (safe area
only) or to clean the window, place your hand
over the buttons; this will temporarily disable the
CapTouch buttons to prevent inadvertent use.

• Keep the window clean.

• Tighten the cover securely.

• Use a password to prevent tampering.

• CapTouch buttons will not work if two or more

buttons are detected as being pressed
simultaneously. Be careful to avoid triggering
multiple buttons or reaching across one button
location to press another.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

27

MeterView XL Programming Software

The fastest and easiest way to program the meter is
using the free Meterview XL programming software.
This software greatly simplifies the programming
process and allows the user to save configuration files
for later use.

The meter connects to the PC via a provided micro­USB cable and is powered by the USB connection, so
no additional power is needed during programming.

To download the latest MeterView XL programming
software and manual, visit predig.com/meterviewxl.

• The meter should only be connected to a
computer while it is located in a safe area.

• Care should be exercised to avoid ground loops
when connecting the USB to an active loop (e.g.
power supply, transmitter, loop-powered meter,
etc.). It is recommended to connect the (mA+)
terminal of the meter to the (-) terminal of a two­wire transmitter and the (mA-) to the (+) of the
next device in the loop or to the (-) terminal of the
power supply.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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CapTouch Buttons and Status Indicators

Buttons

Button

Description

Menu

Right Arrow/F1

Up Arrow/F2

Enter/F3

1. Press the Menu button to enter or exit the
Programming Mode at any time.

2. Press or hold the Right-Arrow button to scroll
forward through the menus, select digits during
numeric programming, select characters during
text programming, or decrement the value of a
digit or character selected with the Up-Arrow
button.

3. Press and hold the Right-Arrow button to zero or
clear digits/characters while in data-entry mode.

4. Press or hold the Up-Arrow button to scroll
backwards through the menus or to increment
the value of a digit or character.

5. Press the Enter button to access a menu or to
accept a setting or programmed digit/character
value.

• Avoid touching more than one button at a time,
otherwise the buttons become unresponsive and enter
into a self-calibrating routine. This is indicated by the

flashing hand symbol .

Indicators

Indicator

State

Description

Steady

Process trend arrows

Flashing

Alarm Indicator

Steady

Password protected

Steady

Solid-state relay 1

Steady

Solid-state relay 2

Flashing

CapTouch buttons
self-calibrating (wait)

Steady

PV Bargraph

Flashing

Alarm condition:
Bargraph segment flashes on
alarm

Steady

Displaying Total

Steady

Displaying Grand Total

Steady

Batch is running

Flashing

Automatic batch control:
Batch paused or start delayed

Steady

Batch is stopped

Steady

Batch is paused

Units

Display

Units

Top

rev, lb, ton, ft3, bbl, m3, kg, US GAL, IGAL,
GAL, GAL/hr, GAL/sec, GAL/min, GAL/day,
° (degree), % (percent)

Bottom

lb, m3, ton, bbl, ft3 kg, US GAL, IGAL, GAL

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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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.

Display Functions & Messages

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)

CUSTOM/(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?

Press Enter to save programmed
units, input, and display values.
Press Menu to cancel.

OUTPUT

Program the meter’s available
outputs

OPEN COLLECTR

Program the meter’s open
collector outputs

OUTPUT1

Open collector 1 setup

OUTPUT2

Open collector 2 setup

DISABLE

Disable the open collector

PULSE

Program the open collector for
pulse output

Display Functions & Messages

Parameter

Action/Setting Description

ALARM

Program the open collector for
alarm output

TIMER

Program the open collector as a
timer

TOT RST

Program the open collector for
total reset

STPWATCH

Program the open collector to turn
on while the stopwatch is running

RELAY

Program the meter’s relay outputs

OUTPUT1

Relay 1 setup

OUTPUT2

Relay 2 setup

DISABLE

Disable the relay

ALARM

Program relay for alarm
functionality

SAMPLE

Program relay for sample
functionality

TIMER

Program relay as a timer

BATCH

Program the relay for batch control
functionality

STPWATCH

Program relay to turn on while the
stopwatch is running

RELAY INFO

View relay runtime and cycle count

4-20 Ma

Program the meter’s 4-20 mA
output

RATE

Transmit a value based on the rate
display

TOTAL

Transmit a value based on the
total display

RETRANS

Retransmit the 4-20 mA input
signal

DISABLE

Disable the 4-20 mA output

CONTROL

Program manual or automatic
operation 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

ADVANCE

Program the meter’s advanced

features

RATE

Advanced 4-20 mA rate input
programming

FUNCTN

Select linear, square root, or
programmable exponent function

LINEAR

Set meter for linear function and
select number of linearization
points

SQROOT

Set meter for square root
extraction

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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30

Display Functions & Messages

Parameter

Action/Setting Description

EXPONENT

Set meter for programmable
exponent and enter exponent
value

SCALE.CAL

Scale or calibrate the mA input

SCALE RATE

Scale the rate 4-20 mA input

CAL RATE

Calibrate the rate 4-20 mA input

TOTAL

Advanced total programming

COUNT

Program the totalizer functionality

LIMIT

Set the number of digits used for
the total

8-DIGIT

Eight digits max (99,999,999)

13-DIGIT

Thirteen digits max
(9,999,999,999,999) Requires top
and bottom display to display
entire number, total will roll over to
zero when it exceeds the limit.

INITIAL

Set the total to start at a specific
number

RESET

Enable or disable the ability to
reset the total

ENABLE

Enable total reset (default)

DISABLE

Disable total reset

GTOTAL

Advanced grand total
programming

COUNT

Program the totalizer functionality

LIMIT

Set the number of digits used for
the total

8-DIGIT

Eight digits max (99,999,999)

13-DIGIT

Thirteen digits max
(9,999,999,999,999) Requires top
and bottom display to display
entire number, total will roll over to
zero when it exceeds the limit.

INITIAL

Set the total to start at a specific
number

RESET

Enable or disable the ability to
reset the grand total

ENABLE

Enable grand total reset (default)

DISABLE

Disable grand total reset

PERMLOCK

Set grand total as non-resettable

CUTOFF

Set low-flow cutoff

DISABLE

Disable low-flow cutoff

ENABLE

Enable low-flow cutoff

FILTER

Set noise filter value

1.0 SEC

1 second

2.0 SEC

2 seconds

4.0 SEC

4 seconds

8.0 SEC

8 seconds

16.0 SEC

16 seconds

OFF

Turn filter off

BYPASS

Set filter bypass (0.0 to 99.9% FS)

PASSWRD

Set a password for the meter

Display Functions & Messages

Parameter

Action/Setting Description

MAIN

Program the main meter password

TOTAL

Program the total reset password

GTOTAL

Program the grand total reset
password

USER

Assign function keys / digital input

F1

Assign F1 function key

F2

Assign F2 function key

F3

Assign F3 function key

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
maximum 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
(CONTROL)

TIMR OC1

Open collector 1 timer

TIMR OC2

Open collector 2 timer

TIMER R1

Relay 1 timer

TIMER R2

Relay 2 timer

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

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Display Functions & Messages

Parameter

Action/Setting Description

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 or
access set points

ACK

Acknowledge all active alarms

SETPOINT

Access all output set points

SETPT.OC1

Access open collector 1 set point

SETPT.OC2

Access open collector 2 set point

SETPT.R1

Access relay 1 set point

SETPT.R2

Access relay 2 set point

SWATCH.Fn

Set the function key or digital input
to activate stopwatch

START

Start the stopwatch

STOP

Pause/Stop the stopwatch

STR-STP

Start or stop the stopwatch

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

OC1+2

Hold/un-hold open collector
outputs

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 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 rate
value

R MIN.MAX

Reset max and min rate 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 key press and
execute action on next key press

OFF

Turn the hint function off

ON

Turn the hint function on

SYSTEM

Program system settings

AOUTCAL

Calibrate the analog output

TOTAL

Enable or disable the totalizer

ENABLE

Enable the totalizer (Default)

Display Functions & Messages

Parameter

Action/Setting Description

DISABLE

Disable the totalizer

BACKLITE

Enable/disable display backlight

ENABLE

Enable the backlight (default)

DISABLE

Disable the backlight

CAPTOUCH

Select CapTouch buttons mode

NORMAL

CapTouch normal (default)

DELAYED

CapTouch delayed

INFO

View meter software version and
model; change the identifier tag

SFT

The software ID number

VER

The software version

MODEL

The meter model number

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

RATE

Select the rate units

TOTAL

Select the total units

U.MULT

Select the total units multiplier
X1, 100 h, 1000 k, 1.0E^6 M

GTOTAL

Select the grand total units

U.MULT

Select the grand total multiplier
X1, 100 h, 1000 k, 1.0E^6 M

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

COMMA

Enable or disable the use of a
comma on the bottom display

ENABLE

Enable comma (default)

DISABLE

Disable comma

BARGRAPH

Turn off or change the bargraph

RATE PCt

Set the bargraph to display the
rate percentage of full scale

RATE

Set the bargraph to display the
rate percentage of a user-selected
range

TOTAL

Set the bargraph to display the
total percentage of a user-selected
range

OFF

Turn the bargraph feature off

TOP

Select what to display on the top
display

RATE

Display the rate

RATE+U

Display the rate and its units
alternating

TOTAL

Display the total

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Display Functions & Messages

Parameter

Action/Setting Description

TOTAL+U

Display the total and its units
alternating

GTOTAL

Display the grand total

TAG

Display the tag

UNITS

Display the units

PRESET

Display the preset value

STPWATCH

Display the stopwatch

TIMR OC1

Display open collector 1 timer

TIMR OC2

Display open collector 2 timer

TIMER R1

Display relay 1 timer

TIMER R2

Display relay 2 timer

MIN

Display minimum value

MAX

Display maximum value

MIN MAX

Display alternating min and max

OFF

Disable the top display

BOTTOM

Select what to display on the
bottom display

TOTAL

Display the total

TOTAL+U

Display the total and its units
alternating

TOT+TAG

Display the total and its tag
alternating

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
alternating

RATE+TAG

Display the rate and its tag
alternating

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

STPWATCH

Display the stopwatch

TIMR OC1

Display open collector 1 timer

TIMR OC2

Display open collector 2 timer

TIMER R1

Display relay 1 timer

TIMER R2

Display relay 2 timer

TAG+RU

Display the tag and rate units
alternating

Display Functions & Messages

Parameter

Action/Setting Description

TAG+TU

Display the tag and total units
alternating

OFF

Disable the bottom display

R PCT

Display the rate’s percentage of

full scale

ma IN

Display the current mA input value

mA OUT

Display the current mA output
value

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Main Menu

The main menu consists of all the meter’s programmable functions: Input, Output, Advanced, and Display.

• Press Menu button to enter Programming Mode then press the Right-Arrow button to move forward through the
menu and the Up-Arrow button to move back.

• Press Menu at any time to go back one level or press & hold 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 Enter/F3 to confirm the setting or pressing
Enter/F3 at the SAVE? screen when available.

Note: The navigation returns to the top

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Setting Numeric Values

The numeric values are set using the Right and Up-Arrow buttons.

1. Press Right-Arrow to select next digit and Up-Arrow to increment digit value. The selected digit will flash.

2. 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.

3. 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.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Scaling the 4-20 mA Input (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 0.00 to 100.00 gal/sec, which corresponds to the
4-20 mA input. The calibration equipment is traceable 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 can accept any signal from
4-20 mA.

• Reverse Scaling
The meter can be scaled so that 4 mA represents the high end of the process value range being measured by
the transmitter and 20 mA represents the low end of the process value range.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Available Engineering Units

The meter has preprogrammed rate and time base
units. The following are the available units to choose
from:

Rate Time Bases (TIME)

/SECOND

Units per second

/MINUTE

Units per minute

/HOUR

Units per hour

/DAY

Units per day

Rate Units (RATE)

GAL/(T)

Gallons per time unit (T)

L/(T)

Liters per time unit (T)

IGAL/(T)

Imperial gallons per time unit (T)

M3/(T)

Cubic meters per time unit (T)

BBL/(T)

Barrels per time unit (T)

BUSH/(T)

Bushels per time unit (T)

cuYD/(T)

Cubic Yards per time unit (T)

cuFt/(T)

Cubic Feet per time unit (T)

cuIn/(T)

Cubic Inches per time unit (T)

LiBBL/(T)

Liquid barrels per time unit (T)

BBBL/(T)

Beer barrels per time unit (T)

HECtL/(T)

Hectoliter per time unit (T)

AF/(T)

Acre-Foot per time unit (T)

CUSTOM/

Custom unit per time unit (T)

• For access to additional predefined units, you
must disable the totalizer. See Disabling the
Totalizer (TOTAL) on page 67.

Additional Unit Classes and Units

The meter has six available preprogrammed unit
classes, if the total is not enabled: volume, height,
temperature, pressure, weight, and rate. Each unit
class has the following available units to choose from:

Volume Units (VOLUME)

GAL

Gallons

L

Liters

IGAL

Imperial Gallons

M3

Cubic Meters

BBL

Barrels

BUSH

Bushels

cuYD

Cubic Yards

cuFt

Cubic Feet

cuIn

Cubic Inches

LiBBL

Liquid barrels

BBBL

Beer barrels

HECtL

Hectoliter

AF

Acre-Foot

CUSTOM

Custom Unit

Height Units (HEIGHT)

INCH

Inches

FEET

Feet

FT-IN

Feet & Inches

YARD

Yards

CM

Centimeters

M

Meters

CUSTOM

Custom unit

Temperature Units (TEMP)

~F

Degrees Fahrenheit

~C

Degrees Celsius

K

Kelvin

~RA

Degrees Rankine

Pressure Units (PRESSURE)

PSI

Pounds per square inch

InHg

Inches of mercury

InH2O

Inches of water

mmHg

Millimeters of
mercury

Kg/CM2

Kilograms per square centimeter

Kg/M2

Kilograms per square meter

mBAr

Millibar

Bar

Bar

PA

Pascal

hPA

Hectopascal

KPA

Kilopascal

MPA

Megapascal

CUSTOM

Custom unit

Weight Units (WEIGHT)

gm

Grams

Kg

Kilograms

tonnE

Tonnes (metric)

oz

Ounces

1b

Pounds

ton

Tons

CUSTOM

Custom unit

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Setting Custom Units (CUSTOM)

When the desired unit class or unit of measure within a class is not available, a custom unit may be programmed. Select the
CUSTOM menu (or CUSTOM unit within a unit class) 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.

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, Top, and Bottom.

Changing the Engineering Units (UNITS)

It is possible to change the engineering units within the selected unit class without the need to re-scale the meter.
When selecting a new unit from within the DISPLAY menu (e.g. changing from gallons (GAL) to liters (L)), 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 (CUSTOM), a custom
conversion factor will need to be entered.

Changing the Decimal Point (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 displayed, and then

it moves to the left most position. Pressing the Up-Arrow moves the decimal point one place to the left.
If the dual-scale level feature is selected, the decimal point selections for PV1 & PV2 are enabled.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

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Enabling or Disabling Commas 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.

Display Capabilities Optimization (TOP and BOTTOM)

Display Configuration Examples

The meter’s dual-line display can be setup in multiple
ways to provide an extremely informative view of the
process variable being monitored. The following
graphics show typical configurations:

Top Display: Toggle Flow Rate and Rate Units
Bottom Display: Toggle Total Flow and Total Units

Note: To display units as GALLONS, select custom

units and enter the desired text.

Top Display: Flow Rate
Bottom Display: Toggling Between Units and Tag

Dual-Scale Mode:
Top Display: Toggle Rate and GPM Units
Bottom Display: Toggle Rate and CFM Units

Top Display: Maximum Value
Bottom Display: Process Value

Using 13 Digits to Display Total

The top and bottom displays can be set up to display a
13-digit total.

Note: The number above should be read as
6,843,276,349,157

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

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Configuring the Display (TOp and BOTTOM)

The display is configured using the TOP and BOTTOM menus in the DISPLY menu.
If the totalizer is disabled and PV2 is enabled, additional options will be available for displaying 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

• Grand Total

• Tag

• Units

• Preset batch value

• Stopwatch

• Open Collector 1 or 2 Timer

• Relay 1 or 2 Timer

• Minimum Value, Maximum Value, or Both

• Off (Blank)

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

• Stopwatch

• Open Collector 1 or 2 Timer

• Relay 1 or 2 Timer

• Tag and rate units alternating

• Tag and total units alternating

• Off (Blank)

• Rate's percentage of max scale

• mA input value

• mA output value

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Programming the Bargraph (BARGRAPH)

The ProtEX+ Rate/Totalizers come 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, a

percentage of the rate, total, or it can be disabled, using the Bargraph menu (BARGRAPH). If the bargraph is set to
represent total, the total full scale will need to be set.

Programming the Outputs (OUTPUT)

All models come with two open collectors. Depending on the model purchased, the meter may include two solid-state
relays, and one 4-20 mA output. The Output menu will only show options for the available outputs. See Ordering
Information on page 12 for details.

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Open Collector Outputs

(OPEN COLLECTR)

The meter is equipped with two NPN open collector outputs that may be set up for pulse outputs, alarms, timed
pulses, total reset, 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.

Alarms are available based on the rate value or the digital input. The alarm status will show on the display even if
the output is not wired.

A timer output (TIMER) turns the open collector on and off at the specified time intervals. The timer can be set as
single-shot or continuous timer.

A total reset output generates a pulse whenever the total is reset, regardless of the reset method used. The On time
is programmable between 0 and 9,999 seconds.

The stopwatch output (STPWATCH) allows the open collector to be manually activated by starting the stopwatch. The
stopwatch count can be displayed on the top or bottom display.

The output may be disabled by selecting DISABLE.
The Open Collector Outputs are programmed in the following manner:

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Pulse Output (PULSE)

Pulse outputs may be assigned to output the rate, total, or grand total at a programmable factor. If the output is
assigned to rate, the factor is a multiplier that determines the number of pulses generated based on the rate. For
example, if the meter display shows 100 gallons/second and the factor is set to 2, the number of pulses generated
per second would be 200. If the output is assigned to total or grand total, the k-factor corresponds to the number of
pulses generated per unit of measure. For example, if the k-factor is 0.001 and the units are gallons, one pulse will
be generated for every 1,000 gallons. The maximum frequency is 1,000 Hz.

Setting output 2 to quadrature will duplicate the other open collector output, but lag by 90 degrees out of phase. The
other output should be programmed as desired for the quadrature output function and must be a pulse (PULSE)
output selection. The quadrature maximum frequency for both outputs is 500 Hz.

The TEST option will output a fixed number of pulses per second based on the FREQ value entered.

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Alarm (ALARM)

Alarm outputs may be assigned to the rate, total, grand total, or the digital input. When assigned to the rate, the alarm
may be set as either a high alarm or a low alarm. Alarm actions (AUTO, AUTO.MAN, LATCH, L-CLEAR) determine how
and when the alarm should be reset. They operate as follows:

• 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 (ACK) 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 Clear (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.

If the alarm is set to rate, a set and reset point must be programmed. The set point is the display value at which the
alarm will turn on and the reset point is the display value at which the alarm will turn off. If the set point is lower than
the reset point, the alarm will be a low alarm; if the set point is higher than the reset point, the alarm will be a high
alarm. The digital input alarm will trigger whenever the digital input is triggered.

For both the rate and digital input alarms, a delay before the alarm is turned on or off may be set, as well as a
fail-safe feature which reverses the on/off operation of the open collectors.

Alarm states will be displayed on the meter even if no open collector output is physically connected. These may
include a red LED backlight, flashing the rate value (rate alarm only), and a programmable alarm message.

Alarm states will be displayed on the meter even if no open collector output is physically connected. These may
include a red LED backlight, flashing the rate value (rate alarm only), a programmable alarm message, an alarm
indicator , and flashing bargraph segment.

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Flashing Red Alarm (RED)

The last two lines in the preceding menu flow chart show how to program the display to turn red, flash, and display a
message when an alarm occurs.

Timer (TIMER)

The timer output may be set to generate the timed pulse only once (ONESHOT) or continuously (CONT).
The timer output produces a constant width pulse at a constant frequency, if set as continuous timer. Program the Off

Delay (OFF.DLAY) from 1 second to 99 hours 59 minutes and 59 seconds. This is the time it takes from selecting
START to turning on the output and for how long the output is off in continuous mode.

Program the On Time (ON TIME) for the active low pulse from 1 second to 99 hours 59 minutes and 59 seconds
(pulse width). This is the period of time for which the output will remain on.

Select Start (START) to begin outputting the constant timed pulse.
Select Stop (STOP) to end outputting the constant timed pulse.
Function keys or the digital input may be assigned to start and stop timer functions (see the USER menu in the

Advanced Menu).

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Stopwatch (STPWATCH)

The stopwatch function may be used to manually run and control a process for a specific time interval up to 99 hrs.,
59 min, and 59 seconds. The stopwatch function may be assigned to any open collector. There are three settings
needed to use the function effectively.

1. Assign stopwatch to either top or bottom display

2. Assign the open collector to control the process (on/off)

3. Assign a function key or digital input to start/stop the stopwatch

Application Example

To maintain consistency of a product, it is necessary to take and test samples at different times throughout the day.
The stopwatch function is used to open and close a solenoid valve to know the exact amount of time needed to
complete the desired sample. Once this is determined, the timer function can be used to automatically take a sample
(batch) based on the time determined using the stopwatch function.

Setup: Assign the following to Stopwatch Function

• Bottom display

(see pages 37 & 39 for details how to change the display)

• Relay 1

(see pages 40 & 46 how to change Open Collector and Solid-State Relay functionality)

• F3: Start/Stop

(see pages 65 & 66 for details on how to change the function keys)

Procedure

• Press F3 to start the stopwatch; relay 1 turns on and the process starts running.

• Press F3 to stop the stopwatch; relay 1 turns off and the process stops.

• The bottom display indicates the time it took to complete the sample.

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Solid-State Relay Outputs (RELAY)

The meter is optionally equipped with two solid-state relays that may be set up for alarms, sample, timer, batch
control, or stopwatch. Alternatively, they may be disabled.

Alarms are available based on the rate, total, grand total, or the digital input. The alarm status will show on the
display even if the output is not wired.

Sample will engage the relay for a programmed period of time when either the total or the grand total have reached
a programmed amount.

A timer output (TIMER) turns the relay on and off at the specified time intervals. The timer can be set as single-shot
or continuous timer.

For use in batch control applications, the meter relays must be set to batch. This will enable the batch control features
of the meter.

The stopwatch output (STPWATCH) allows the relay to be manually activated by starting the stopwatch. The
stopwatch count can be displayed on the top or bottom display.

The output may be disabled by selecting DISABLE.

• During setup, the relays do not follow the input and they will remain in the state found prior to entering the

Relay menu.

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Relay Menu

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Alarm (ALARM)

Alarm outputs may be assigned to the rate, total, grand total, or the digital input. When assigned to the rate, the alarm
may be set as either a high alarm or a low alarm. Alarm actions (AUTO, AUTO.MAN, LATCH, L-CLEAR) determine how
and when the alarm should be reset. They operate as follows:

• 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).

• Latching (LATCH): Alarm will not reset automatically even if the alarm condition has cleared. Press the
Enter button at any time to acknowledge the alarm.

• Latching with Reset after Clear (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.

If the alarm is set to rate, a set and reset point must be programmed. The set point is the display value at which the
alarm will turn on and the reset point is the display value at which the alarm will turn off. If the set point is lower than
the reset point, the alarm will be a low alarm; if the set point is higher than the reset point, the alarm will be a high
alarm. If the alarm is set to total or grand total, only a set point needs to be programmed. The digital input alarm will
trigger whenever the digital input is triggered.

For all alarms, a delay before the alarm is turned on or off may be set, as well as a failsafe feature which will inverse
the on/off programming.

Alarm states will be displayed on the meter even if no relay output is physically connected. The alarm indicator (!)
(only on meters with no bargraph) will display as well as optional red LED backlight, flashing rate, total, or grand total
value (rate, total, or grand total alarms only), and a programmable alarm message.

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Sample (SAMPLE)

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
engage for 10 seconds whenever the total has incremented by 1,000 (e.g. 1000, 2000, 3000).

Timer (TIMER)

The timer output may be set to generate the timed pulse only once (ONESHOT) or continuously (CONT). The timer
output produces a constant width pulse at a constant frequency, if set as continuous timer.

Program the Off Delay (OFF.DLAY) from 1 second to 99 hours 59 minutes and 59 seconds. This is the time it takes
from selecting START to turning on the output and for how long the output is off in continuous mode.

Program the On Time (ONTIME) for the active low pulse from 1 second to 99 hours 59 minutes and 59 seconds
(pulse width). This is the period of time for which the output will remain on.

Select Start (START) to begin outputting the constant timed pulse. Select Stop (STOP) to end outputting the constant
timed pulse. Function keys or the digital input may be assigned to start and stop timer functions (see the USER menu
in Advanced).

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Batch Control (BATCH)

Selecting batch control for relay 1 enables the batching features on the meter. The top display is changed to show the
total and the bottom display is changed to display the preset batch amount. The function keys are changed so that F1
starts a batch, F2 opens the preset menu to allow the preset value to be changed, and F3 stops the currently running
batch. Enabling batch control for relay 1 allows access to the batch menu under relay 2 (this menu does not appear
by default).

Batch Control Relay 1

The batch total can be set to count UP or DOWN. The batch MAXIMUM is the max preset amount that can be batched.
Batching can be set to either manual or automatic operation (MANUAL or AUTO). If setting batching to automatic, a
delay before the next batch is started must be programmed. The PRESET amount is the value at which the batch will
stop and can be programmed up to the value assigned in the MAXIMUM menu. An on and off delay may be set for
batching relays.

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Batch Control Relay 2

The BATCH option only appears under relay 2 if relay 1 has also been set to batch control. The second relay may be
programmed as a preclose relay or as another batching relay with its own preset amount.

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Stopwatch (STPWATCH)

The stopwatch function may be used to manually run and control a process for a specific time interval up to 99 hrs.,
59 min, and 59 seconds. The stopwatch function may be assigned to any relay. There are three settings needed to
use the function effectively.

1. Assign stopwatch to either top or bottom display

2. Assign the relay to control the process (on/off)

3. Assign a function key or digital input to start/stop the stopwatch

Application Example

To maintain consistency of a product, it is necessary to take and test samples at different times throughout the day.
The stopwatch function is used to open and close a solenoid valve to know the exact amount of time needed to
complete the desired sample. Once this is determined, the timer function can be used to automatically take a sample
(batch) based on the time determined using the stopwatch function.

Setup: Assign the following to Stopwatch Function

• Bottom display

(see pages 37 & 39 for details how to change the display)

• Relay 1

(see pages 40 & 46 how to change Open Collector and Solid-State Relay functionality)

• F3: Start/Stop

(see pages 65 & 66 for details on how to change the function keys)

Procedure

• Press F3 to start the stopwatch; relay 1 turns on and the process starts running.

• Press F3 to stop the stopwatch; relay 1 turns off and the process stops.

• The bottom display indicates the time it took to complete the sample.

Runtime & Cycle Count (INFO)

The relay information menu shows runtime and cycle count for each relay. These values may be cleared at any time
by selecting the Clear option (CLEAR?).

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Isolated 4-20 mA Output (4-20 mA)

The 4-20 mA menu is used to scale the isolated 4-20 mA output based on display values. This menu is not present
on models without a 4-20 mA output option.

The 4-20 mA analog output (if equipped) can be scaled to provide a 4-20 mA signal for the rate or total display range
or to simply retransmit the 4-20 mA input. The output may be disabled (DISABLE) and will only output the minimum
signal.

Overrange and underrange values determine what mA signal the meter will output if the mA input is underrange
(<3.5 mA) or overrange (>20.5 mA). This value may be set to 1 mA, 3.5 mA, 3.8 mA, 20.5 mA, 20.8 mA, 23 mA, or
disabled.

No equipment is needed to scale the analog output; simply program two display values and corresponding mA output
signals.

Rate or Total (RATE or TOTAL)

To scale the analog output, enter display value 1 and a corresponding analog output value for this display, then enter
display value 2 and a corresponding analog output value for this display value. This will provide a linearly scaled
analog output.

Retransmit (RETRANS)

This option will retransmit the 4-20 mA analog input without the need to scale the output.

Output Manual Control (CONTROL)

The Control menu is used to control the open collector outputs, 4-20 mA analog output, and the relays manually,
ignoring the input. Each open collector, relay, and analog output can be programmed independently for manual
control. Selecting automatic control sets all relays and analog output for automatic operation.

After selecting manual control for a specific output, you can set the output value. To change the output value, return
to the Control menu, select the output to control, select manual control, and enter a new value.

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Advanced Features Menu (ADVANCE)

To simplify the setup process, functions not needed for most applications are located in the Advanced Features
menu. The options under advanced features include advanced rate, total, and grand total setup, cutoff, filter,
password, function key programming, and system settings.

Advanced Rate Setup (ADV RATE)

The Advanced Rate menu contains options to apply input signal conditioning functions to the input and scale/calibrate
the input signal.

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Input Signal Conditioning Functions (FUNCTN)

The Function menu is used to select the input signal conditioner applied to the input: linear, square root, programmable
exponent, or round horizontal tank volume 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.

Using MeterView XL

MeterView XL makes programming the input signal conditioning functions quick and easy. Go to the input/scale menu
and select the desired function from the drop down menu in the “scale input” section.

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Square Root Linearization (SQROOT)

The square root function can be used to linearize the signal from a differential pressure transmitter and display flow
rate in engineering units.

PD6928 Displaying Flow Rate by Applying the Square Root Function to the Output of a DP Transmitter.

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Programmable Exponent Linearization (EXPONEN)

The programmable exponent can be used to linearize the signal from level transmitters in open-channel flow
applications using weirs and flumes.

The PD6928, in combination with an ultrasonic level transmitter, makes for an economical way to measure and
display open channel flow rate and total 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.

3" Parshall Flume Discharge Table

Formula: CFS = 0.9920 H

1.547

GPM = 445.2 H

1.547

MGD = 0.6411 H

1.547

Where: H = Head in feet

Table 12-3

Head

(Feet)

CFS

GPM

MGD

3.00

5.428

2436

3.508

ISCO Open Channel Flow Measurement Handbook, 3rd edition

With this information the PD6928 should be programmed in the following fashion. This setup assumes the level
transmitter is programmed to output 20 mA at the maximum head height of 3.00 feet; but any mA value at a head
height with a known flow rate may be used.

Function

Desired

Programming

Open Channel Flow

3" Parshall flume

Set Programmable Exponent to 1.547

Flow Rate

Millions of Gallons per
Day (MGD)

Set 4 mA = 0
20 mA = 3.508

Total

Millions of Gallons

Set Totalizer Conversion Factor = 1
(password protect “total” to avoid accidental reset)

Non-Resettable Grand
Total

Program meter so
grand total can never be
reset

Set non-resettable grand total password

Display

Display Flow Rate

Set upper display for flow rate display and lower display
units/tag for MGD.

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The Programmable Exponent function is programmed in the following manner:

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Multi-Point Linearization (LINEAR)

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.
These points are established via direct entry (SCALE) or
with a live calibration signal source (CAL).

MeterView XL showing the linear
points setup feature. Up to 32
points can be selected.

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Advanced Scaling and Calibration (SCALE.CAL)

This menu offers options to scale or calibrate the meter.

Scaling the Input (SCALE)

The scale menu in the Advanced menu is the same as the scale menu in the Input menu. See Scaling the 4-20 mA
Input (INPUT) on page 35 for details about scaling the meter.

Calibrating the Input (CAL)

To scale the meter without a signal source, refer to

Scaling the 4-20 mA Input (INPUT) on page 35.

The meter can be calibrated to display the process in engineering units by applying the appropriate input signal and
following the calibration procedure. The CAL menu can be used either with a calibrated current source or with a live
signal coming from a
4-20 mA transmitter connected to the process being measured.

During calibration, the mA input value will be displayed as INP 1 and INP 2. Adjust the input source until the
desired mA value is shown.

The use of a calibrated signal source is required.

Follow these steps to calibrate the input:

1. After accessing the SCALE.CAL menu, press the Right-Arrow button to scroll to the Calibration menu (CAL
PV) and press Enter.

2. Select the appropriate units for the desired process variable, then press Enter. For information on units, see

Available Engineering Units on page 36.

3. The meter displays INP 1. Apply a known signal and press Enter. The display will flash while accepting the
signal.

4. After the signal is accepted, the meter displays DSP 1. Enter a corresponding display value for the input
signal, and press Enter to accept.

5. The meter displays INP 2. Apply a known signal and press Enter. The display will flash while accepting the
signal.

6. After the signal is accepted, the meter displays DSP 2. Enter a corresponding display value for the input signal
and press Enter to accept.

7. After completing calibration, the SAVE? display will need to be acknowledged using the Enter key before
calibration will take effect.

Note: The SAVE? prompt is not displayed if no changes have been made to the scaling.

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Additional Engineering Units

• If the total is disabled and the dual-scale level feature has been selected, the menus for PV1 & PV2 are enabled.

• Additional engineering units become available as shown below.

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Advanced Total and Grand Total Setup (ADV TOTAL & ADV GTOTAL)

The advanced total and grand total menu contain the count (COUNT) and reset (RESET) menus. The count menu
allows the digit limit to be selected between 8-digit (bottom display only) and 13-digit (uses top and bottom display to
display full number) and the initial value at which the total or grand total should start counting.

When using a 13-digit total or grand total, press the function key assigned to display (default: F1) to view the full
amount once the value has exceeded 100,000,000 (decimal places are automatically truncated). If a 13-digit total or
grand total is displayed on the bottom display and the value has exceeded eight digits, the truncated value will flash
to indicate that it is not the complete value. To display 13-digit grand total, assigned the top and bottom display to
grand total.

The reset menu is used to enable or disable the reset of the total and grand total.

Non-Resettable Grand Total

The grand total reset may be permanently disabled by selecting YES at the PERMLOC menu after disabling grand total
reset.

• Use caution when selecting the PERMLOC feature as once the grand total reset has been permanently locked, it
cannot be unlocked.

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Low-Flow Cutoff (CUTOFF)

The low-flow cutoff feature allows the meter to be programmed so that the often-unsteady output from a differential
pressure transmitter at low flow rates always displays zero on the meter. The cutoff value may be programmed from

0.1 to 99999. The meter will display zero below the cutoff value. The cutoff can be disabled to display negative

values.

Noise Filter (FILTER)

The noise filter is available for unusually noisy signals that cause an unstable process variable display. The noise
filter averages the input signal over a certain period of time. The filter level determines the length of time over which
the signal is averaged. The filter level can be set between 1 and 16 seconds or turned off. The higher the filter level,
the longer the averaging time and so the longer it takes the display to settle to its final value. Setting the filter level to
off disables the filter function.

Noise Filter Bypass (BYPAS)

The noise filter bypass changes the behavior of the meter so that small variations in the signal are filtered out but
large abrupt changes in the input signal are displayed immediately. The bypass value determines the minimum
amount of signal change to be displayed immediately. All signal changes smaller than the bypass value are filtered or
averaged by the meter. The noise filter bypass may be set between 0.1 and 99.9% of full scale.

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Enabling Password Protection (PASSWRD)

The Password menu is used for programming security to prevent unauthorized changes to the programmed
parameter settings or undesired resetting of the total or grand total. There are three separate passwords available
that can be set independently of each other: Main, Total, and Grand Total. The Main, Total, and Grand Total
passwords prevent access to the meter Programming Mode. Total and Grand Total passwords prevent resetting of
the total and grand total, respectively.

To set a password, enter the Password menu and program a five-digit password. When a password has been
enabled, the lock icon will display in the upper-left side of the display. For instructions on how to program numeric
values see Setting Numeric Values on page 34.

Making Changes to a Password Protected Meter

If the Main password is enabled, the meter will display the message LOCKED when the Menu button is pressed. If
the Total or Grand Total passwords are enabled, the meter will display the message LOCKED when trying to reset or
change the total or grand total. Press the Enter button while the message is being displayed and enter the correct
password to gain access to the menu. After exiting Programming Mode, the meter returns to its password protected
condition.

Disabling Password Protection

To disable the Main, Total, or Grand Total passwords, access the Password menu and clear the desired password
either by pressing and holding the Right Arrow button until all digits reset to zero or manually changing all of the digits
to zero. When the Enter button is pressed, the meter will display UNLOCKED and will no longer require a password to
access Programming Mode, or a password to reset or change the total or grand total, depending on which password
was cleared.

Note: If the meter is password protected and the password has been forgotten, the password may be overridden
using the master password: 50865

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Programmable Function Keys User Menu (USER)

The User menu allows the user to assign the CapTouch buttons function keys F1, F2, and F3, and the digital input
(located on the input signal connector) to access some of the menus or to activate certain functions immediately (e.g.
reset max & min, hold relay states, etc.). This allows the meter to be greatly customized for use in specialized
applications.

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Function Keys & Digital Input Available Settings

Refer to the following table for descriptions of each
available function key or digital input setting.

Display

Description

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 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 maximum
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
(CONTROL)

TIMR OC1

Open collector 1 timer

TIMR OC2

Open collector 2 timer

TIMER R1

Relay 1 timer

TIMER R2

Relay 2 timer

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

Display

Description

ALARM.FN

Set the function key or digital input to
acknowledge an alarm

ACK

Acknowledge all active alarms

SETPOINT

Set all output set point

SETPT.OC1

Set open collector 1 set point

SETPT.OC2

Set open collector 2 set point

SETPT.R1

Set relay 1 set point

SETPT.R2

Set relay 2 set point

SWATCH.FN

Set the function key or digital input to
activate stopwatch

START

Start the stopwatch

STOP

Pause/Stop the stopwatch

STR-STP

Start or stop the stopwatch

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

OC1+2

Hold/un-hold open collector outputs

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

Enabling the Function Key Hint Feature (HINT)

Enabling the function key hint feature will cause a hint
message to be displayed when pressing the F1, F2,
or F3 function keys. This text gives a brief description
of what the button is programmed to do. Pressing that
function key a second time will execute that action.

The hint feature does not affect the digital input (DI)
which is intended for immediate execution.

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Changing System Settings (SYSTEM)

The System menu contains the following menus:

Analog Output Calibration, Restore Factory Defaults,
Totalizer, Backlight, CapTouch Buttons Operation
Mode, Information, and Internal Calibration.

Note: The Analog Output Calibration menu is
available only if the option is installed.

Analog Output Calibration (AOUTCAL)

To perform the analog output calibration, it is
recommended to use a milliamp meter with a
resolution of at least 0.1 µA to measure the output
current. The values saved internally during this
procedure are used for scaling the 4-20 mA output in
the Setup menu.

4-20 mA Output Calibration Procedure

1. Go to the Advanced Features menu and
navigate to the SYSTEM menu and press
Enter. Navigate to AOUTCAL and press Enter.

2. The display will show 4 mA. The ProtEX+ mA
output should now be close to 4 mA. Enter the
actual value read by the digital mA meter on
the bottom display and press Enter.

3. The display will show 20 mA. The ProtEX+ mA
output should now be close to 20 mA. Enter
the actual value read by the digital mA meter
on the bottom display and press Enter.

4. The ProtEX+ will now calculate the calibration
factors and store them.

5. Press Menu to exit.

Disabling the Totalizer (TOTAL)

The totalizer can be disabled using the SYSTEM ­TOTAL menu. With the totalizer disabled, the meter

will behave as a PD6908 process meter. Refer to the
LIM6908 instruction manual for instructions about
programming the process meter.

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Enabling or Disabling the Backlight (BACKLITE)

The backlight may be enabled or disabled using the
System - Backlight menu. The backlight is enabled by
default, but the input must be wired appropriately for
the backlight to function. See Wiring Diagrams on
page 24.

CapTouch Buttons Operation Mode (CAPTOUCH)

CapTouch buttons have two modes of operation:
Normal and Delayed. Delayed mode prevents
accidental trigger of the buttons. In the Delayed
mode, the buttons enter into a low sensitivity state
(sleep) and they ignore quick button presses after 20
seconds of inactivity. To wake up the buttons, press
and hold any button for more than 2 seconds, the
buttons respond normally.

Viewing System Information (INFO)

System information, such as software (firmware)
number and version, model number, and system tag,
may be viewed in the INFO menu. Press the Right
Arrow button to cycle through all available meter
information. Press Menu to go back to the previous
menu.

Calibrating the Internal mA Reference (ICAL)

The meter is factory calibrated prior to shipment to display

0.00 to 100.00, which corresponds to the 4-20 mA input.

The calibration equipment is traceable to NIST standards.

The use of calibrated signal sources is necessary to

calibrate the internal source of the meter. The meter’s

internal source is what allows the user to scale the
meter without applying a signal.

Check calibration of the meter at least every
12 months.

Note: Allow the meter to warm up for at least
15 minutes before performing the internal source
calibration procedure.

The Internal Calibration menu is part of the Advanced
menu. Internal Calibration is performed as follows:

1. Press the Menu button to enter
Programming Mode.

2. Press the Up-Arrow button twice and press
Enter to access the Advanced menu.

3. Press the Up-Arrow button and press Enter
to access the System menu.

4. Press the Up-Arrow button and press Enter
to access the ICAL menu.

5. The meter displays low input current
message
(4.000 mA). Apply a 4 mA signal and press
Enter. The display flashes for a moment
while the meter is accepting the low input
signal.

6. After the display stops flashing, the display

moves to the high input calibration (20.000
mA). Apply the high input signal and press
Enter. The display will flash again while the
meter is accepting the high input signal.

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Meter Operation

The meter is equipped with four CapTouch through­glass buttons. These buttons allow meter operation
without removing the cover and exposing the
electronics in a hazardous area.

Three CapTouch buttons labeled F1, F2, and F3 can
be programmed as function keys to perform a variety
of meter functions simply by pressing on the glass
over the button. These include resetting the total,

resetting the meter’s relays or open collectors,

starting and stopping timers, displaying max/min
values and starting/stopping batches. See Function
Keys & Digital Input Available Settings on page 66 for
a complete list of settings available.

A digital input is available on the meter, and it may
function in a similar fashion as the function keys to
allow remote operation of a single task.

The max & min readings (peak & valley) reached by
the process can be displayed either continuously by
assigning it to a display line in the Display menu, or
momentarily by pressing the F1 key (default) or
assign it to any of the other function keys or the digital
input.

Pressing the F1 key cycles through various display
values (e.g. Grand total, max, min); press the Enter
key to lock the display in the current process value
and press the Enter key again to unlock the display.

The relay information menu shows runtime and cycle
count for each relay.

Change the display units within the selected unit class
at any time without the need to re-scale the meter.
Select the desired units via the UNITS menu in the
DISPLAY menu, and the meter automatically converts
the display values to the new unit of measure.

CapTouch Buttons Operation

Button

Description
(Default Settings)

Press to enter or exit Programming
Mode, view settings, or exit max/min

readings.

Press to display grand total. Continue
pressing to cycle through max, min,
rate, and total displays.

Press to access the Reset menu.
Press F1 to scroll through the options.
Press F3 to reset the currently
displayed parameter.

Press to acknowledge all manually
resettable relays or open collectors.

Press to lock/unlock the display value
after pressing the F1 key.

CapTouch Buttons

The PD6928 is equipped with four capacitive sensors
that operate as through-glass buttons so that it can be
programmed and operated without removing the
cover (and exposing the electronics) in a hazardous
area.

These buttons can be disabled for security by
selecting the Lock setting on the switch located on the
side of the display module, close to the Menu button.

To actuate a button, press one finger to the window
directly over the marked button area. When the cover
is removed, the CapTouch buttons can be used after
the meter completes a self-calibrating routine (hand
symbol flashes). The sensors are disabled when more
than one button is pressed, and they will automatically
re-enable after a few seconds (hand symbol off).

CapTouch Button Tips & Troubleshooting

The CapTouch buttons are designed to work under
any lighting condition and to protect against false
triggering. If the CapTouch buttons are not needed
during operation, they can be disabled (slide switch to
Lock).

• To remove cover with power applied (safe area
only) or to clean the window, place your hand
over the buttons; this will temporarily disable the
CapTouch buttons to prevent inadvertent use.

• Keep the window clean.

• Tighten the cover securely.

• Use a password to prevent tampering.

• CapTouch buttons will not work if two or more

buttons are detected as being pressed
simultaneously. Be careful to avoid triggering
multiple buttons or reaching across one button
location to press another.

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Function Keys Operation

During operation, the programmable function keys
operate according to the way they have been
programmed in the Advanced Features – User menu.
The table under CapTouch Buttons Operation on
page 69 shows the factory default settings for F1, F2,
and F3.

A hint message may be enabled to provide a
description of what each function key does prior to
executing their assigned function. See Enabling the
Function Key Hint Feature (HINT) on page 66.

Digital Input Operation

A digital input is standard on the meter. This digital
input is programmed identically to function keys F1,
F2, and F3. The input is triggered with a contact
closure between DI+ and DI-, or with an active low
signal. During operation, the digital input operates
according to the way it has been programmed in the
Advanced Features – User menu. Factory default
setting is to reset total.

Maximum/Minimum Readings

The max & min readings (peak & valley) reached by
the process can be displayed either continuously or
momentarily.

Display momentarily by pressing the F1 function key
(default) or assigning to any of the other function keys
or to the digital input in the User menu.

Display continuously by pressing the Enter button
while the max/min is being displayed to lock the
display. Press Enter again to unlock.

Any of the F1-F3 function keys (buttons) and the
digital input can be programmed to reset the max &
min readings. The meters are set at the factory to
display the max reading by pressing the Right
Arrow/F1 button and to use the Up-Arrow/F2 button to
access the Reset menu. Press the Right Arrow button
to cycle through the available parameters to reset.

Top Display: Process Value
Bottom Display: Max & Min

Total Reset Capabilities

The total and grand total can be reset using a
CapTouch button, an external contact closure on the
digital input, or MeterView XL software. In addition,
both total and grand total reset can be password
protected to prevent unauthorized resets.

Total Reset via CapTouch Button

The CapTouch function key F2 is set up to reset the
total. If reset grand total is enabled, it is possible for the
user to reset either the total or the grand total without
removing the cover or the need for external devices.

Total Reset via Digital Input

The PD6928’s digital input can also be used to reset the
total or grand total.

Total Reset Password Protection

Total and grand total passwords can be set to prevent
resetting the total or grand total unless a password is
entered. Grand total reset can be disabled through
the meter interface, and it can also be permanently
disabled. See Enabling Password Protection
(PASSWRD) on page 64.

Non-Resettable Grand Total

The user can set up the grand total to be non-resettable by
selecting YES at the PERMLOC menu; see page 62 for
details. Once this is done, the grand total can never be reset.

-+

DI

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Runtime & Cycle Count (INFO)

The relay information menu shows runtime and cycle
count for each relay. These values may be cleared at
any time by selecting the Clear option (CLEAR?). If
the cycle count or runtime values need to be changed
on a frequent basis, it would be convenient to set up a
CapTouch button or the digital input to simplify this
process.

Note: See the menu tree under Solid-State Relay
Outputs (RELAY) on page 46 for complete menu

structure on this feature.

Meter displaying the
amount of time a relay
has been activated

Meter displaying the
number of times a
relay has cycled

Changing Engineering Units

During operation of the meter, it is possible to change
the display units within the selected unit class without
the need to re-scale the meter. The UNITS menu in the
DISPLAY menu allows the unit of measure to be
changed (e.g. from gallons/second (GAL/s) to
liters/second (L/s)) and the meter will automatically
convert the display values to the new unit of measure.
If entering a custom unit (CUSTOM), a custom
conversion factor will need to be entered. See
Changing the Engineering Units (UNITS) on page 37.

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Batch Controller Operation

Selecting batch control for relay 1 enables the
batching features on the meter. The top display is
changed to show the total and the bottom display is
changed to display the preset batch amount. The
function keys are changed so that F1 starts a batch,
F2 opens the preset menu to allow the preset value to
be changed, and F3 stops the currently running batch.
Enabling batch control for relay 1 allows access to the
batch menu under relay 2 (this menu does not appear
by default). Refer to page 73 for details to setup the
batch controller features.
The PD6928 has two open collector outputs that can
used for alarm indication. A 4-20 mA output option is
also available for retransmitting the process variable.

Default Batch Control Operation

The following describes the operation of the three
operating keys as programmed with default settings.
The digital input can be used to start and stop the
batch using a momentary pushbutton. See examples
for Manual Batch Control on page 75 and Automatic
Batch Control on page 76.

START Key (F1)

Press the START button to begin a new batch
process. Press the START button to resume a batch
that has been stopped.

BATCH Key (F2)

Press the Batch button to access the Preset (batch
amount) menu. Program the batch with the arrow
keys and confirm with the Enter key.

STOP Key (F3)

Press the STOP key once during a batch to pause.
Press the STOP key while paused to stop and cancel
the batch.

• Only the STOP Key is Enabled when a Batch
is Running. During a batch process, only the

pause/stop functions are operational, other
keys are deactivated.

Batch Control Operation Example

The following example shows how two-stage manual
batch control functions with a PD6928. 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.

Two-Stage Manual Batch Control Setup Using Relays 1 & 2

The following table shows the parameters as they
appear within the OUT RELAY menu.

Parameter

Setting

Function

RELAY
OUTPUT 1

RLY 1
BATCH

Press Enter to assign relay
1 batch parameters.

BATCH
COUNT

UP or

DOWN

Setup batch to count up
or down.

BATCH
MAXIMUM

100.00
GAL

This setting prevents the
operator from entering a
preset value that exceeds
a safety limit for the batch
process.

BATCH
MODE

MANUAL

AUTO

Press Enter to select
manual or automatic batch
control.

BATCH
PRESET

55.00 GAL

Enter the batch size.

BATCH
DELAY

ON & OFF

Enter the On & Off time
delays for relay 1,
if desired.

RELAY
OUTPUT 2

RLY 2
BATCH

Press Enter to assign relay
2 batch parameters.

BATCH
PRECLOSE

YES
PRECLOSE

5.00

Set the pre-close value to
5 to close the valve being
controlled by relay 2 so it
closes five gallons before
reaching the preset.

BATCH
DELAY

ON & OFF

Enter the On & Off time
delays for relay 2,
if desired.

RELAY
MESSAGE

MSG
RELAY 1

Enter a message to be
displayed while relay 1 is
on, if desired.

MSG
RELAY 2

Enter a message to be
displayed while relay 2 is
on, if desired.

If only one-stage batch control is desired, do not
assign relay 2 to batch. The following pages show
illustrations of how the above settings control the
batch operation. The display assignment shown is the
default.

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Batch Control Relay 1

The batch total can be set to count UP or DOWN.
The batch MAXIMUM is the max preset amount that can be batched.
Batching mode can be set to either manual or automatic operation (MANUAL or AUTO). If setting batching to

automatic, a delay before the next batch is started must be programmed.
The PRESET amount is the value at which the batch will stop and can be programmed up to the value assigned in the

MAXIMUM menu.
An on and off delay may be set for batching relays.

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Batch Control Relay 2

The BATCH option only appears under relay 2 if relay 1 has also been set to batch control. The second relay may be
programmed as a preclose relay or as another batching relay with its own preset amount.

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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 the digital input.

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 Start

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

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.

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. The next batch will only
start after the START button or (F1)
is pressed.

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).

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.

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.

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.

Resume Batch

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

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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 the digital.

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 Start

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

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.

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.

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).

Automatic Start of Next Batch

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

Pause

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

Resume Batch

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

Stop Process

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

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Troubleshooting

This product is a highly sophisticated instrument with
an extensive list of features and capabilities. If the
CapTouch buttons are used to program the meter, it
can be a difficult task to keep everything straight. That
is why we strongly recommend the use of the free

MeterView XL software for all programming activities.

A cable is provided to use the MeterView XL software
for programming the meter.

If you have programmed the meter with the CapTouch
buttons and it is not working as intended, try
re-programming the meter using the MeterView XL
software.

Reset Meter to Factory Defaults

When the parameters have been changed in a way
that is difficult to determine what’s happening, it might
be better to start the setup process from the factory
defaults. This can be accomplished using MeterView
XL software or with the CapTouch buttons.

To load factory defaults:

1. Press the Menu button to enter

Programming Mode.

2. Press the Right-Arrow button twice and

press Enter to access the Advanced menu.

3. Press the Up-Arrow button and press Enter

to access the System menu.

4. Press the Right-Arrow button and press

Enter to access the Default menu.

5. Press Enter twice in quick succession. The

meter will load default settings and restart.

Determining Software Version

To determine the software (firmware) version of a
meter:

1. Press the Menu button to enter
Programming Mode.

2. Press the Up-Arrow button twice and press
Enter to access the Advanced menu.

3. Press the Up-Arrow button and press Enter
to access the System menu.

4. Press the Up-Arrow button twice and press
Enter to access the Info menu.

5. Press the Right-Arrow button to cycle
through the meter information. When done,
press the Menu button to return to the
previous menu or press & hold Menu to exit
to Run mode.

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Factory Default Settings

The following table shows the factory setting for most
of the programmable parameters on the meter.

Parameter

Display

Default Setting

Input Menu

Rate Units

UNITS

Gallons/second

Input 1

INP 1

4.000 mA

Display 1

DSP 1

0.00

Input 2

INP 2

20.000 mA

Display 2

DSP 2

100.00

Output Menu

Open Collector
Output 1

OUTPUT 1

Disabled
Pulse Factor

FACTOR

1.0

Test Frequency

FREQ

100

Alarm

ALARM

Rate

Alarm Action

ACTION

AUTO

Set Point

SET

20.00

Reset Point

RESET

10.00

Alarm On Delay

DELAY ON

0 seconds

Alarm Off Delay

DELAY OFF

0 seconds

Alarm Failsafe

FAILSAFE

OFF

Red LED

RED

ON

Flash rate

FLASH

ON

Alarm Message

MSG

ON

Message Text

MSG EDIT

ALARM 1

Timer Off Delay

OFF.DLAY

1 minute

Timer On Time

ON TIME

1 second

Timer Mode

MODE

Continuous

Open Collector
Output 2

OUTPUT 2

Disabled
Set Point

SET

40.00

Reset Point

RESET

30.00

Message Text

MSG EDIT

ALARM 2

Relay Output 1

RELAY 1

Disabled

Alarm

ALARM

Rate

Alarm Action

ACTION

AUTO

Set Point

SET

70.00

Reset Point

RESET

60.00

Alarm On Delay

DELAY ON

0 seconds

Alarm Off Delay

DELAY OFF

0 seconds

Alarm Failsafe

FAILSAFE

OFF

Red LED

RED

ON

Flash rate

FLASH

ON

Alarm Message

MSG

ON

Message Text

MSG EDIT

ALARM 3

Sample Count

TOTAL COUNT

1,000 gallons

Parameter

Display

Default Setting

Sample Time

TOTAL TIME

10 seconds

Batch Count

BATCH COUNT

Up

Batch Max

BATCH MAXIMUM

10,000

Batch Mode

BATCH MODE

Manual

Batch Preset

BATCH PRESET

1,000

Batch On Delay

DELAY ON

0 seconds

Batch Off Delay

DELAY OFF

0 seconds

Timer Off Delay

OFF.DLAY

1 minute

Timer On Time

ON TIME

1 second

Timer Mode

MODE

Continuous

Relay Output 2

RELAY 2

Disabled

Set Point

SET

90.00

Reset Point

RESET

80.00

Message Text

MSG EDIT

ALARM 4

4-20 mA Output

4-20 mA

Rate

Advanced Menu

Signal
Conditioning
Function

FUNCTION

Linear (2 pts)
Count Limit

COUNT LIMIT

8-Digit Total

Count Initial

COUNT INITIAL

0

Total Reset

TOTAL RESET

Enabled

GTotal Reset

GTOT RESET

Disabled

Non-Resettable
Grand Total

PERMLOCK

No
Low Cutoff

CUTOFF

Enabled: 0

Filter

FILTER

2.0 seconds

Filter Bypass

BYPAS

0.4 PCT

Main Password

MAIN

00000 (Unlocked)

Total Password

TOTAL

00000 (Unlocked)

GTot Password

GTOTAL

00000 (Unlocked)

Function Key 1

F1

Display

Function Key 2

F2

Reset

Function Key 3

F3

Acknowledge

Digital Input

DI

Reset Total

Hint Feature

HINT

Disabled

Totalizer

TOTAL

Enabled

Backlight

BACKLIGHT

Enabled

CapTouch

CAPTOUCH

Normal

Display Menu

Unit of Measure

UNITS

Rate: GAL/S
Total: GAL

Decimal Point
Location

DEC.PT

Rate: 2; Total: 1;
Grand Total: 0

Comma

COMMA

Enabled

Top Display

TOP

Rate

Bottom Display

BOTTOM

Total

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Troubleshooting Tips

Certain sequences of events can cause unexpected results. To solve these issues, it is best to start fresh from factory defaults and
use the manual as a step by step programming guide, rather than a random approach to programming. To reset the meter to factory
defaults, see Factory Default Settings on page 78. In addition, for best results, we recommend using the free MeterView XL software
for all programming needs.

Symptom

Check/Action

No display at all

Check:

1. The 4-20 mA current loop is providing at least 3.5 mA to the meter.

2. The voltage drop of all devices connected to the 4-20 mA current loop does not
exceed the max rating of the loop power supply.

Not able to change setup or
programming, LOCKED is
displayed

Meter is password-protected. Enter correct five-digit password to unlock or Master
Password of 50865.

Meter display flashes:

1. 99999

2. -9999

Check that the number of digits required for the scaled value does not exceed the
maximum digits for the display. If it does, try adjusting the decimal point location for less
precision or changing the PV display to the bottom display.

Display is unstable

Check:

1. Input signal stability and value.

2. Display scaling vs. input signal.

3. Filter and bypass values (increase).

Display response is too slow

Check filter and bypass values

Display reading is not accurate

Check:

1. Input signal conditioner selected: Linear, square root, etc.

2. Scaling or calibration

Display does not respond to input
changes, reading a fixed number

Check display assignment. It might be displaying max, min, or set point.

Display shows:

MAX, MIN, RATE, TOTAL,
or GTOT and a number

Display has been locked. Press Enter to unlock the display readings.

Relay operation is reversed

Check fail-safe settings in Output menu

Relays do not respond to signal

Check:

1. Relay action in Output menu

2. Set and reset points

3. Check manual control menu

If the display locks up or the meter
does not respond at all

Cycle the power to reboot the microprocessor.

CapTouch buttons do not respond

1. If hand-symbol is flashing, multiple buttons were touch at the same time, wait a few
seconds until the hand symbol goes off.

2. If Delayed mode has been set, press & hold any button for 5 seconds, the buttons
should respond normally.

3. If the slide switch on the display module is in the Lock position, move the switch to
the Unlock position; see Disabling the CapTouch Buttons on page 26.

Other symptoms not described
above

Call Technical Support for assistance.

PD6928 Ex-Proof & I.S. Loop-Powered Flow Rate/Totalizer

Instruction Manual

80

Notes

PD6928 Ex-Proof & I.S. Loop-Powered Flow/Rate Totalizer

Instruction Manual

PRECISION DIGITAL CORPORATION

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LIM6928HA_A

SFT125 Ver 1.000 & up

11/22

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