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PD6720 Field-Mount Loop-Powered Rate/Totalizer 

Instruction Manual 

 

16

 

rate in gallons and total in liters, enter a conversion 
factor of 

3.7854

. When rate and total units are the 

same, the Conversion Factor should be 

1.0000

Press the 

Enter 

button, at any time, to accept a 

setting or 

Menu

 button to exit without saving changes. 

 

 

Manual or Automatic Total Reset 
Function (

t rST

The meter may be programmed to reset the total 
either manually using the 

Reset 

button or 

automatically. Manual reset button may be disabled to 
avoid inadvertent total reset. 

The automatic reset is based on the set point 
programmed in the 

Advanced

 menu: 

OUTPUT

 

 

alrm

 

 

total

. Once the set point is reached, the 

meter waits for a programmed amount of time (

t dly

and then resets the total to zero. 

 

To enable total reset by 

Reset

 button, choose 

man

   

Enabl

 

To disable total reset by 

Reset

 button, choose 

ma

n   

dsab

l

 

To reset total upon total alarm set point, choose 

auto

,

 enter a time delay (

t dly

), and proceed to 

programming the set point, see 

Alarm Output 

(

alrm

on page 

19

. 

Press the 

Enter 

button, at any time, to accept a 

setting or 

Menu

 button to exit without saving changes. 

 

 

Setting the Tag Display (

tag

The meter can be set to display a combination of 
seven alphanumeric characters for engineering units 
(e.g. 

GALLONS

) or for identification (e.g. 

TANK

 

3

).  

Press 

Right 

arrow to select next unit and 

Up 

arrow  

to increment unit. 

 

To automatically cycle the lower display between 
total reading for ten seconds and tag for two 
seconds, choose 

tOgle

 

To disable the tag display and show only total 
reading uninterrupted on the lower display, 
choose 

Off

.

 

 

To show tag only on the lower display choose 

On

.

 

Totalizing continues in the background, but it is 
not shown while 

On

 is selected. 

Selecting 

On

 or 

togle

 prompts for entry of the tag. 

The unit being changed blinks. 

Press the 

Enter 

button, at any time, to accept a 

setting or 

Menu

 button to exit without saving changes. 

 

 

 

 

Содержание PD6720 Series

Страница 1: ...Display Rate in Units per Second Minute Hour or Day Display Open Channel Flow with Programmable Exponent Feature Open Collector Pulse or Alarm Output Display Mountable at 0 90 180 270 SafeTouchTM Thro...

Страница 2: ...Terms Conditions on www predig com for complete details 2020 Precision Digital Corporation All rights reserved Introduction The PD6720 is a rugged field mount loop powered rate totalizer fully featur...

Страница 3: ...ime Base t base 15 Setting the Total Conversion Factor totCF 15 Manual or Automatic Total Reset Function t rST 16 Setting the Tag Display tag 16 Setting Up the Password PASSWRD 17 Locking the Meter 17...

Страница 4: ...Enclosure Dimensions Side Cross Section View 7 Figure 3 Connector Board 8 Figure 4 Connections without Backlight 9 Figure 5 Connections with Loop Powered Backlight 9 Figure 6 Connections with Externa...

Страница 5: ...Environmental Operating temperature range 40 to 75 C Storage temperature range 40 to 75 C Relative humidity 0 to 90 non condensing Connections Screw terminals accept 12 to 22 AWG wire Enclosure NEMA...

Страница 6: ...able from 0 to 99 999 seconds Open Collector Output Rating Isolated open collector sinking NPN 30 VDC 150 mA max Alarm Output Assign to rate for high or low alarm trip point Assign to total for total...

Страница 7: ...and set the display module aside 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 malfunction...

Страница 8: ...t from external supply OUTPUT NPN open collector output positive OUTPUT NPN open collector output negative RESET Contact closure alarm acknowledge pull up to 3 VDC RESET Contact closure alarm acknowle...

Страница 9: ...ions are made to two terminals labeled RESET Connect to a contact closure source such as a relay or a pushbutton as shown in Figure 7 Figure 7 Reset Connections Open Collector Output Connections Outpu...

Страница 10: ...sors are disabled when a mechanical button is pressed and will automatically be re enabled after 60 seconds of inactivity The SafeTouch buttons are designed to filter normal levels of ambient interfer...

Страница 11: ...nds to access the Advanced features of the meter Right Reset Button Press the Right arrow button to move to the next digit or decimal position during programming Up Display Button Press the Up arrow b...

Страница 12: ...ogram menu sCalE Scale Enter the Scale menu Cal Calibrate Enter the Calibrate menu Inpt1 Input 1 Calibrate input 1 signal or program input 1 value DspL1 Display 1 Program display 1 value Inpt2 Input 2...

Страница 13: ...w to select next digit and Up arrow to increment digit The digit being changed blinks Press the Enter button at any time to accept a setting or MENU button to exit without saving changes The decimal p...

Страница 14: ...functions are exclusive of each other The meter uses the last function programmed Only one of these methods can be employed at a time The Scale and Calibrate functions can use up to 32 points default...

Страница 15: ...complete the calibration or scaling of the meter The minimum span is 0 10 mA If the minimum span is not maintained the meter reverts to input 2 allowing the appropriate input signals to be applied Re...

Страница 16: ...on choose man dsabl To reset total upon total alarm set point choose auto enter a time delay t dly and proceed to programming the set point see Alarm Output alrm on page 19 Press the Enter button at a...

Страница 17: ...returns to its password protected condition Disabling Password Protection To disable the password protection access the Password menu and enter the correct password twice as shown below The meter is n...

Страница 18: ...total Set Set Point Program set point Reset Reset Point Program reset point Pulse Pulse Output Program pulse output Scaler Count MAX HZ Frequency Program pulse output maximum frequency Funct Function...

Страница 19: ...deadband is one display count If set and reset points are programmed the same output will reset one count below set point Total alarm trip point program total set point Alarm reset is triggered by tot...

Страница 20: ...rent source instead of using input scaling This process will override previously programmed scaling points Apply a live signal using a known accurate signal source InP 1 32 and then enter the correspo...

Страница 21: ...ging time and so the longer the display may take to find its final value The filter contains a noise filter bypass feature so that while small variations in the signal will be filtered out large abrup...

Страница 22: ...he factory defaults Instructions to load factory defaults Enter the Advanced features menu Press and hold Reset button when INFO is shown Press Enter when RESET DFALTS prompt is shown Note If Enter is...

Страница 23: ...exit Max Min display readings Display response is too slow Check filter setting to see if it can be lowered to LO or OFF If the display locks up or the meter does not respond at all Perform hard rese...

Страница 24: ...on or increment digit Cycle through maximum minimum and mA display mode ENTER Accept selection value and move to next selection Acknowledge alarms Max Min Mode While in Run Mode pressing Up Arrow will...

Страница 25: ...990 www predig com LIM6720_C SFT049 Ver 1 200 up 07 20 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 34...

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