Precision Digital Corporation PD6900 Series Instruction Manual Download Page 7 | Manualshive

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

Instruction Manual

7

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

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Summary of Contents for PD6900 Series

Page 1: ...nnel 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 Rela...

Page 2: ...L 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 ...

Page 3: ...nting 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 Overvi...

Page 4: ...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 ...

Page 5: ...re 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 Out...

Page 6: ...where 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...

Page 7: ...n 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...

Page 8: ...ailable 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 out...

Page 9: ...inless 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 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 PD...

Page 10: ... 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 te...

Page 11: ...own 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 disp...

Page 12: ...ls come with bargraph two open collector outputs and one digital input standard 2 The meter comes standard with two 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 DI...

Page 13: ...inless 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 s...

Page 14: ...s 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 a...

Page 15: ...r 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 comm...

Page 16: ...edge 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 Ope...

Page 17: ...DC 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 ...

Page 18: ...inum 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...

Page 19: ... 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 chemical...

Page 20: ...ront 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 flame proof environment without the use of tools Using a M2 hex wrench turn the screw clockwise until th...

Page 21: ... 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 insta...

Page 22: ...tor 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 Si...

Page 23: ...ptions 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 ...

Page 24: ...0 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 connec...

Page 25: ... 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 ...

Page 26: ...e 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 2...

Page 27: ...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 met...

Page 28: ...r 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 Ste...

Page 29: ...LLECTR 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 ...

Page 30: ...ter 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 func...

Page 31: ...unction 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 C...

Page 32: ...g 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...

Page 33: ...ss 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 N...

Page 34: ...e 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 p...

Page 35: ...0 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 b...

Page 36: ...zer 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 Cubi...

Page 37: ...Y 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 gallo...

Page 38: ...ide 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...

Page 39: ...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 al...

Page 40: ... 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 w...

Page 41: ...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 programm...

Page 42: ...utput 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 ...

Page 43: ... 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 wil...

Page 44: ...s 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 Sel...

Page 45: ... 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 ...

Page 46: ... 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 b...

Page 47: ...PD6928 Ex Proof I S Loop Powered Flow Rate Totalizer Instruction Manual 47 Relay Menu ...

Page 48: ...e 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...

Page 49: ...OT 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 t...

Page 50: ...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...

Page 51: ...izer Instruction Manual 51 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 ...

Page 52: ...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 an...

Page 53: ...isplay 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 with...

Page 54: ...plications 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 ...

Page 55: ...k 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 th...

Page 56: ...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 ...

Page 57: ... of 3 0 feet the flow rate is 3 508 MGD 3 Parshall Flume Discharge Table Formula CFS 0 9920 H1 547 GPM 445 2 H1 547 MGD 0 6411 H1 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 ...

Page 58: ...PD6928 Ex Proof I S Loop Powered Flow Rate Totalizer Instruction Manual 58 The Programmable Exponent function is programmed in the following manner ...

Page 59: ... 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 ...

Page 60: ...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 mete...

Page 61: ...w Rate Totalizer Instruction Manual 61 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 ...

Page 62: ...ult 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 i...

Page 63: ... 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 fil...

Page 64: ...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 ...

Page 65: ...u 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 ...

Page 66: ...ted 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 ope...

Page 67: ...he 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 ...

Page 68: ...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 ...

Page 69: ... 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 t...

Page 70: ...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 Ma...

Page 71: ...ge 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...

Page 72: ...op 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...

Page 73: ...t 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 ...

Page 74: ...izer Instruction Manual 74 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 ...

Page 75: ... 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 ...

Page 76: ...l 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 batc...

Page 77: ...m 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 ...

Page 78: ...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...

Page 79: ...he 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 Chec...

Page 80: ...PD6928 Ex Proof I S Loop Powered Flow Rate Totalizer Instruction Manual 80 Notes ...

Page 81: ......

Page 82: ...5 8990 www predig com LIM6928HA_A SFT125 Ver 1 000 up 11 22 Contact Precision Digital Technical Support Call 800 610 5239 or 508 655 7300 Fax 508 655 8990 Email support predig com Sales Support Call 800 343 1001 or 508 655 7300 Fax 508 655 8990 Email sales predig com Place Orders Email orders predig com For the latest version of this manual please visit www predig com ...

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