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Precision Digital Corporation PD6928, Инструкция по эксплуатации

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Precision Digital Corporation PD6928 Скачать руководство пользователя страница 37

PD6928 Loop-Powered Flow Rate/Totalizer 

Instruction Manual 

 

37 

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 

 

 

Содержание PD6928

Страница 1: ...ly 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 Ana...

Страница 2: ... 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 ...

Страница 3: ...gital Input Connections 23 4 20 mA Output Connections 23 Solid State Relay Connections 23 Open Collector Output Connections 24 Remote Operation of Meter 24 Setup and Programming 25 Overview 25 CapTouch Buttons 25 CapTouch Buttons Delay 25 Disabling the CapTouch Buttons 25 CapTouch Button Tips Troubleshooting 25 MeterView XL Programming Software 26 CapTouch Buttons and Status Indicators 27 Display ...

Страница 4: ...Function Keys User Menu USER 64 Changing System Settings SYSTEM 66 Meter Operation 68 CapTouch Buttons Operation 68 CapTouch Buttons 68 CapTouch Button Tips Troubleshooting 68 Function Keys Operation 69 Digital Input Operation 69 Maximum Minimum Readings 69 Runtime Cycle Count INFO 69 Changing Engineering Units 69 Total Reset Capabilities 70 Total Reset via Digital Input 70 Total Reset Password Pr...

Страница 5: ...L L2N 21 Figure 6 Connector Labeling for PD6928 GP PL L3N 22 Figure 7 Connector Labeling for PD6928 GP PL L5N 22 Figure 8 4 20 mA Input Connection without Backlight 23 Figure 9 4 20 mA Input Connection with Backlight 23 Figure 10 Digital Input Connections 23 Figure 11 4 20 mA Output Connections 23 Figure 12 Solid State Relay Connections 23 Figure 13 Open Collector Output Connections 24 Figure 14 P...

Страница 6: ... of harsh operating environments to provide convenient and informative display of any 4 20 mA signal One of the most convenient features of these instruments is their dual line display which is typically used to display the 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 an...

Страница 7: ...ay or open collector is connected CapTouch Through Window Buttons The PD6928 is equipped with four capacitive sensors that operate as through window buttons so that it can be operated without removing the cover and exposing the electronics in a harsh operating area CapTouch buttons are designed to work under any lighting condition and to protect against false triggering They can be disabled for se...

Страница 8: ...e 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 2...

Страница 9: ... pipes A slot on the back makes it easy to center the unit on a pipe There are three NPT threaded conduit holes for wiring Two NPT plastic conduit plugs are included 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...

Страница 10: ...te 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...

Страница 11: ...ut 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 flo...

Страница 12: ...6 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 PDAPLUG75P 3 4 Plastic Conduit Plug Two Plugs Included with Meter PDA SSTAG Custom Stainless Steel Tag see website for convenient ordering form PDA BUTTON Mo...

Страница 13: ...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 t...

Страница 14: ...ouch through window 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 40 to 85 C 40 to 185 F Relative humidity 0 to 90 non condensing Printed circuit boards are conformally coated Noise Filter Averages the input signal ...

Страница 15: ...ecimal 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 ...

Страница 16: ...he 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 ...

Страница 17: ...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 28 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 predi...

Страница 18: ...claration 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 repla...

Страница 19: ...e factory for assistance Conduit Plugs Included The PD6928 is supplied with two plastic conduit plugs for installations that do not require the use of all three conduit entries 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...

Страница 20: ... 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 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...

Страница 21: ...ing for PD6928 GP PL LNN Figure 5 Connector Labeling for PD6928 GP PL 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 Signa...

Страница 22: ...ns 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 ...

Страница 23: ...t overload up to 1 amp The display may or may not show a fault condition depending on the nature of the overload 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 t...

Страница 24: ...be for resetting the total resetting the meter s relays or open collectors starting and stopping timers displaying max min values and starting stopping batches The digital input could be connected to a PDA2360 single button remote control station as illustrated in Figure 14 For a complete list of Digital Input settings see Function Keys Digital Input Available Settings on page 65 Figure 14 PDA2361...

Страница 25: ...s 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 aft...

Страница 26: ... via a provided micro USB 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 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 termi...

Страница 27: ...ss 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 Sol...

Страница 28: ...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 S...

Страница 29: ...ue 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 ke...

Страница 30: ... 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...

Страница 31: ...AL 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 Displ...

Страница 32: ... 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 Th...

Страница 33: ...ted 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...

Страница 34: ...c 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 to 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...

Страница 35: ...TAL on page 66 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 Inch...

Страница 36: ...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...

Страница 37: ... 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 ...

Страница 38: ...reset 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 alternati...

Страница 39: ... 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 ...

Страница 40: ...ble 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 b...

Страница 41: ...s 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 ...

Страница 42: ...arm 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 ...

Страница 43: ... 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 Sta...

Страница 44: ...ent 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 36 38 for ...

Страница 45: ...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 manu...

Страница 46: ...PD6928 Loop Powered Flow Rate Totalizer Instruction Manual 46 Relay Menu ...

Страница 47: ...m 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 th...

Страница 48: ...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 h...

Страница 49: ...rrently 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 n...

Страница 50: ...nstruction Manual 50 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 ...

Страница 51: ...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 36 38 for details how to change the display Relay 1 see pages 39 45 how to change Open Collector and Soli...

Страница 52: ...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...

Страница 53: ...ons 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 ...

Страница 54: ...me 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 desi...

Страница 55: ... 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 ...

Страница 56: ...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 to out...

Страница 57: ...PD6928 Loop Powered Flow Rate Totalizer Instruction Manual 57 The Programmable Exponent function is programmed in the following manner ...

Страница 58: ... 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 ...

Страница 59: ...d 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 35 3 The meter disp...

Страница 60: ...Totalizer Instruction Manual 60 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 ...

Страница 61: ... 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...

Страница 62: ...ain 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 byp...

Страница 63: ...n 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 met...

Страница 64: ...s 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 ...

Страница 65: ...mer 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 coll...

Страница 66: ...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 VantageView 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 VantageView mA output should now be c...

Страница 67: ...ated 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 A...

Страница 68: ...t 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 ...

Страница 69: ...er 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 D...

Страница 70: ...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 a...

Страница 71: ...se 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 overru...

Страница 72: ...nt 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 ...

Страница 73: ...nstruction Manual 73 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 ...

Страница 74: ...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...

Страница 75: ...hen 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 b...

Страница 76: ...actory 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 ...

Страница 77: ...m 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...

Страница 78: ...om 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 displ...

Страница 79: ......

Страница 80: ... www predig com LIM6928GP_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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