Precision Digital Corporation PD696 User manual

PRECISION DIGITAL CORPORATION
19 Strathmore Road • Natick MA 01760 USA
Tel [phone] • Fax [phone]
www.predig.com
DIGITAL PANEL METERS
Models PD696 - PD698
6 Digit Loop-Powered Flow Rate/Totalizers
Instruction Manual
• 4-20 mA Linear or Square Root Input
• 4½ Digit Rate Display, 6 Digit Total Display
• Total Displayed in any Engineering Unit
• Rate Displayed in Engineering Units per Second, Minute, or Hour
• Programmable Alternating Rate/Total Display
• Low-Flow Cutoff
• Field Selectable Noise Filter
• Non-Volatile Memory, No Battery Needed
• Isolated Open Collector Pulse Output
• Loop-Powered Backlight Option
PD697
NEMA 4X Enclosure
PD698
Explosion-Proof Enclosure
PD696
1/8 DIN Panel Mount
Available with
Loop-Powered
Backlight

Models PD696 – PD698 Instruction Manual
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TABLE OF CONTENTS
Specifications 4
Setup and Programming Overview 5
Connections 7
Programming 8
Calibration 10
Low-Flow Cutoff (CutoFF) 11
Noise Filter 11
Totalizer Programming 13
Time Base (t bASE) 13
Totalizer Conversion Factor (tot CF) 13
Totalizer Decimal Point (tot dP) 14
Parameter Combinations 14
Isolated Pulse Output (PuLSE) 15
Display Contrast (ContSt) 16
Lockout 16
Display Selection (dSPLAy) 16
Operation 18
Default Display (dSPLy t or dSPLy r) 18
Totalizer Reset (rSEt t) 18
Low Signal Detector 18
Installation 19
ORDERING INFORMATION
MODEL DESCRIPTION
PD696-N Panel Mount Loop-Powered Totalizer
PD696-B Panel Mount Loop-Powered Totalizer
with Loop-Powered Backlight Option
PD697-N NEMA 4X Loop-Powered Totalizer
PD697-B NEMA 4X Loop-Powered Totalizer
with Loop-Powered Backlight Option
PD698-N Explosion-Proof Loop-Powered Totalizer
PD698-B Explosion-Proof Loop-Powered Totalizer
with Loop-Powered Backlight Option
PD698-N-EX FM & CSA Explosion-Proof Loop-Powered Totalizer
PD698-B-EX FM & CSA Explosion-Proof Loop-Powered Totalizer
with Loop-Powered Backlight Option
ACCESSORIES
PDA6844 Panel Mounting Kit for PD697 (does not provide NEMA 4X seal to the panel)
PDA6845 2" Pipe Mounting Kit for PD697-698
PDA-MAG Reed Switch Magnet for PD698
PDA-SSTAG Stainless Steel Tag

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DESCRIPTION
The PD696-PD698 models are microprocessor-based loop-powered flow
rate/totalizers with programmable pulse output. They are available in three
enclosure types with or without the loop-powered backlight option.
1/8 DIN Panel Mount
The PD696 is housed in a standard 1/8 DIN panel mount enclosure with a
NEMA 4X front panel.
NEMA 4X Enclosure
The PD697 is housed in a rugged NEMA 4X enclosure which provides excellent
protection against corrosion, windblown dust and rain, splashing water, and hose
direct water enabling these units to be mounted virtually anywhere.
Explosion-Proof Enclosure
The FM Approved and UL/C-UL explosion-proof enclosure of the PD698 allows
for installation in Class I, Division 1, Groups B, C, & D; Class II, Groups E, F, & G;
and Class III areas.
PD698’s Magnetic Reed Switch
The PD698 has a magnetic reed switch in addition to a push-button switch. The
reed switch allows the user to program and operate the meter without having to
remove the enclosure cover. Additionally, an external push-button switch can be
used to reset the total.
To operate the menu, move the reed switch magnet (PDA-MAG) towards the
glass window, just below the display. Moving the magnet towards the glass
window will produce the same results as pressing the push-button switch.
To operate the PD698’s menu without the reed switch magnet, it is necessary to
remove the explosion-proof enclosure cover. The push-button switch (SW1) is
located in the lower right corner of the display board, just behind the faceplate.
Move magnet toward
and away cover to
operate menu
( Optional)
Caution!
When servicing the unit in a hazardous area, all appropriate
hazardous area procedures must be followed.

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SPECIFICATIONS
Except where noted all specifications apply to operation at +25°C.
Input: 4-20 mA @ 24 VDC maximum, Linear or Square Root
Display: 0.5" (12.7 mm) LCD, 6 digits; Rate: 0 to 19,999. Total: 0 to 999,999
Linear Input Accuracy: ±0.05% FS ±1 count
Square Root Accuracy: ±0.1% FS ±1 count (10-100% of flow); ±1% FS (0-10% of flow)
Decimal Point: User selectable
Calibration
Range: User programmable over entire range of meter
Minimum Input Span: 1.6 mA between Input 1 and Input 2. An Error message
will appear if Input 1 and Input 2 signals are programmed too close together.
Programming Method: PD696 & PD697: one front panel button; PD698: one
button behind faceplate or reed switch & magnet.
Noise Filter: The field selectable noise filter allows the meter to be programmed
so that an unsteady (noisy) input can be displayed with greater stability.
Display Update Rate: 1/second
Alternating Display: Display may be programmed to alternate between rate and
total every 10 seconds.
Minimum Input Current: 3.5 mA
Maximum Voltage Drop: 5.6 VDC @ 20 mA;
Model with backlight option: 7.0 VDC @ 20 mA
Non-Volatile Memory: Settings stored for a minimum of 10 years.
Pulse Output Rating: Isolated open collector, 24 VDC @ 20 mA; maximum
pulse output: 30 pulses/sec; pulse width: 16 ms. If the pulse output exceeds the
maximum pulse output (30 pulses/sec), the total will flash and counts will be lost
in the totalizer and the pulse output.
Lockout: Jumper JP1 restricts modification of programmed settings.
Totalizer: Calculates total based on rate and field programmable multiplier to
display total in engineering units. Time base available in seconds, minutes, or
hours. Time base must be selected according to time units in which rate is
displayed.
Totalizer Conversion Factor: 0.00001 to 59999
Total Reset: Via front panel button or external contact closure
External Total Reset: Connect terminals R and CM
Low-Flow Cutoff: 0 to 100% FS, user selectable. To disable low-flow cutoff,
program cutoff value to zero. Meter does not totalize below low-flow cutoff value.
Loop-Powered Backlight Option: Powered directly from the 4-20 mA loop, no
batteries required. The display brightness will increase as the input current increases.
Connections: Removable screw terminals accept 12 to 26 AWG
Operating Temperature: 0 to 65°C
Storage Temperature: -30 to 80°C
Relative Humidity: 0 to 90% non-condensing
Approvals: The PD698-N-EX and PD698-B-EX are FM Approved & CSA
Certified as explosion-proof for use in Class I, Division 1, Groups B, C, & D; dust-
ignition proof in Class II, Division 1, Groups E, F, & G; and Class III.
Warranty: 2 years parts & labor
Extended Warranty: 1 or 2 years, refer to Price List for details.

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PD696 Enclosure: 1/8 DIN, high impact plastic, UL 94V-0;
color: black; NEMA 4X, IP65 front panel; panel gasket provided
PD696 Weight: 6.9 oz (196 g)
PD697 Enclosure: Impact-resistant glass filled polycarbonate, color: gray,
NEMA 4X, IP67; ½" conduit hole provided at base. May be provided on back for
panel mounting applications, call factory for details.
PD697 Weight: 10.4 oz (294 g)
PD698 Enclosure: Explosion-proof, cast aluminum with glass window, 0.3%
max copper content, corrosion resistant polyester powder coating, color: safety
blue. NEMA 4X, 7, & 9, IP66; FM Approved & UL/C-UL Certified: Class I, Division
1, Groups B, C, & D, Class II, Groups E, F, & G, Class III; Class I, Zone 1 AEx d
IIC hazardous outdoor (Type 4X) locations. IEC rating: Ex d IIC IEC 60529 IP66.
Two ¾" NPT holes provided.
PD698 Weight: 5.7 lb (2.6 kg)
SETUP AND PROGRAMMING OVERVIEW
Programming and installing the PD696-PD698 involves three basic steps
1. Connections (page 7)
a. Signal input
b. External reset
c. Pulse output
2. Programming
Calibration (page 10)
a. Decimal point
b. 4-20 mA Display values
c. Square root extraction (if needed)
d. Low flow cutoff (if needed)
e. Noise Filter (if needed)
Totalizer Programming (page 13)
a. Time base
b. Totalizer conversion factor
c. Totalizer decimal point
d. Open collector pulse output (if needed)
Display (page 16)
a. Contrast
b. Lockout
c. Alternating rate and total display
Operation (page 18)
a. Default Display
b. Totalizer Reset

Models PD696 – PD698 Instruction Manual
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PD697 and PD698 Disassembly
The removable screw terminal connector is located on the lower input signal board.
To access these input terminals it is necessary to remove the display board from
the input signal board. This is done by first removing the enclosure cover. Next,
loosen the 2 screws that hold the display board to the standoffs. Slide and rotate
the display board so the left side comes off the standoff first, proceed to remove the
display board from both standoffs. Be careful to avoid contact of the display with
rough surfaces. The display board may be disconnected from the ribbon cable by
pulling up on the ribbon cable connector located on the input signal board.
Connect a 4-20 mA input signal to terminal J1 located on the input signal board as
shown below. The screw terminal connector can be removed to facilitate wiring.
Caution:
When re-assembling the circuit boards, tighten the screws
enough to snug against the faceplate and hold it in place. Over-
tightening may cause damage to the screws and the faceplate.
Note:
The PD696 screw terminal connector is located at the back of the instrument.
Pollution Degree 2
Installation Category II
CAUTION: DISCONNECT FROM SUPPLY BEFORE OPENING. KEEP COVER TIGHT WHILE
CIRCUITS ARE ALIVE. CONDUIT SEALS MUST BE INSTALLED WITHIN 18 INCHES OF THE
ENCLOSURE.
ATTENTION: OUVRIR LE CIRCUIT AVANT D’ENLEVEL LE COUVERCLE GARDER LE
COUVERCLE BIEN FERME TANT QUE LES CIRCUITS SONT SOUS TENSION. UN
SCELLEMENT DOIT ETRE INSTALLE A MOINS DE 450 mm DU BOITIER.

Models PD696 – PD698 Instruction Manual
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CONNECTIONS
Note:
When using a four-wire transmitter connect the transmitter’s positive signal
terminal to S+ and the negative signal to S-.
WIRING INSTRUCTIONS
CAUTION: Use supply wires suitable for 5 degrees C above surrounding ambient.
1. All field connections to be made with insulated copper wire, either solid or stranded. Tighten all screw
terminals to 4.5 lb-in (0.5 Nm). Strip length = ¼ in (7mm). DO NOT pre-treat wire with solder.
2. All terminals: Use AWG #22-12 wire. If using AWG #20 or smaller wire, up to 2 wires may be connected
to each terminal. If using AWG #18 or larger wire, only 1 wire may be connected to each terminal.

Models PD696 – PD698 Instruction Manual
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PROGRAMMING
The Single Button Scaling technique is used to program many of the functions,
which include Calibration, Totalizer setup, and Display setup. The general
procedure is to press the front panel button to accept a flashing display or to wait
for the display to scroll and push the button when the desired display appears.
The first time the front panel button is pressed, the meter scrolls through the
standard programming routine titles: dSPy t,rSEt t,CALIb,CutoFF,FILtEr,
t bASE,tot CF,tot dP,PuLSE,dSPLAy,and ContSt.
The following flowchart overviews the PD696 - PD698 programming routines.
Push front button Display scrolls programming routines. Push front panel button to select desired routine
dSPy t rSET t CALIb CutoFF FILtEr t bASE tot CF tot dP PuLSE dSPLAy
Push front panel button
Display
Total
Reset
Total
2 Point or
Sq Root
Calibration
Low-
Flow
Cutoff
Noise
Filte
r
Time
Base
Totalizer
Conversion
Factor
Totalize
r
Decimal
Point
Pulse
Output
Display
Setup and
Lockout
There are 5 basic programming instructions
1. If the flashing display is OK, push the front panel button before it stops
flashing to accept it.
2. If the flashing display is not OK, (or if the button was not pushed in time to
accept it), wait for the first digit to flash.
3. If a flashing digit is OK push the button before it starts to scroll to accept it.
4. If a flashing digit is not OK, (or if the button was not pushed in time to accept
it), wait for the digit to scroll, and push the button when OK.
5. Digits will scroll until the button is pushed. When a digit is accepted by
pushing the button, the next digit to the right flashes.
Calibration Error
An Error message during calibration indicates that the calibration process was
not successful. The meter should be recalibrated.
The Error message will appear if Input 1 signal and Input 2 signal are too close
together, see specifications.
The Error message will appear if Input 1 signal is inadvertently also applied for
Input 2 calibration, or the button is pushed before applying Input 2.

Models PD696 – PD698 Instruction Manual
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Display Functions and Messages
Display Parameter Description
dSPy t Display Total Sets the total as the default display (page 18)
dSPy r Display Rate Sets the rate as the default display (page 18)
rSEt t Reset Total Resets the totalizer to zero (page 18)
CALIb Calibration To calibrate unit using a calibrated signal source
(page 10)
LiNEAr Linear Input Programs meter for linear calibration (page 10)
Sq rt Square Root Programs meter for square root extraction
calibration (page 10)
InPt 1 Input 1 Signal Calibrates display for low input signal
InPt 2 Input 2 Signal Calibrates display for high input signal
CutoFF Low-Flow Cutoff Programs unit to display zero below user
programmed cutoff point (page 11)
FILtEr Noise Filter Value Sets the filter value for noisy signals (page 11)
BYPASS Filter Bypass Sets the filter bypass in % of F.S. (page 11)
t bASE Time Base Programs correct time unit factor (seconds,
minutes, or hours) (page 13)
tot CF Totalizer
Conversion Factor
Rate multiplier to display total in any
engineering unit (page 13)
tot dP Totalizer Decimal
Point
Sets the decimal position for the totalizer
(page 14)
PuLSE Pulse Output Programs the pulse output (page 15)
dSPLAy Display Programs default display mode (page 16)
ContSt Display Contrast Sets the display contrast (page 16)
dIAg Diagnostics Software version number (factory use)
r19999 Overrange Display overrange
r-9999 Underrange Display underrange
Error Error Calibration not successful (page 8)

Models PD696 – PD698 Instruction Manual
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CALIBRATION
Calibration is performed using the front panel button. It does not require any tools
or disassembly of the meter. A calibrated signal source is required. The
calibration input signals must be within the range of the meter and there must be
an absolute difference between Input 1 and Input 2 greater than 1.6 mA.
For best results, allow the meter to warm-up for at least 15 minutes.
1. Push the front panel button, when CALIb appears push the button again.
2. Next, 888888 will be displayed and a decimal point will travel from left to
right. Push the front panel button when the decimal point is in the desired
position. If no decimal point is desired, push the button when decimal point
is NOT shown.
3. LinEAr or Sq rt will be displayed alternately. Press the button when
LinEAr is displayed for normal 2-point linear calibration. Press the button
when Sq rt is displayed for square root extraction calibration.
4. Meter flashes InPt 1. Apply Input 1 signal THEN push the front panel
button, (e.g. 4 mA).
5. All digits flash for 3 seconds.
If this is the desired display for Input 1, push the button before entire
display stops flashing, (meter will then flash InPt 2). Go to step 10
below.
If this is not the desired display, (or if the button was not pushed in time
to accept the display) wait for the first digit to flash.
6. The first digit flashes for 3 seconds before it scrolls. This digit can only be
“0” or “1”, in the rate display mode, it will display 0-9 in the totalizer mode.
7. When flashing digit is OK, push the button, next digit will flash for 3 seconds
before it scrolls.
8. Repeat step 7 for each remaining digits.
9. When last digit has been accepted the entire display will flash for 3 seconds.
Press the front panel button within 3 seconds if OK to complete Input 1
calibration. If not OK, wait for first digit to flash again and go to step 6
above.
10. Meter flashes InPt 2. Apply Input 2 signal THEN push the front panel
button, (e.g. 20 mA). All digits flash for 3 seconds.
11. Go to step 6 above.

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LOW-FLOW CUTOFF (CutoFF)
The Low-Flow Cutoff allows the PD696 Series to be programmed so that the
often unsteady output from a differential pressure transmitter at low flow rates
always displays a zero on the rate display. Factory default is 000000 (disabled).
To Program Low-Flow Cutoff
1. Push the front panel button, when CutoFF appears push the button again.
Rate digits flash for 3 seconds.
If this is the desired low flow cutoff value push the button before the
entire display stops flashing.
If this is not the desired low flow cutoff value, (or if the button was not
pushed in time to accept the display) wait for the first digit to flash.
2. First digit flashes for 3 seconds before it scrolls.
3. When flashing digit is OK, push the button; next digit will flash for 3 seconds
before it scrolls.
4. Repeat step 3 for each remaining digit.
5. When last digit is accepted the entire display will flash for 3 seconds. Press
the button within the 3 seconds if OK to complete low flow cutoff
programming. If NOT OK, wait for first digit to flash and go to step 2 above.
Example: If low flow cutoff is set at 1200, any rate less than 1200 will be
displayed as “0”.
To disable low flow cutoff, program cutoff value to zero.
NOISE FILTER
The field selectable noise filter allows the meters to be programmed so that an
unsteady (noisy) input can be displayed with greater stability.
Increasing the filter value will help stabilize the display, however this will reduce the
display response rate. The filter level may be set anywhere between 2 and 999.
Factory default is 20.
Noise Filter Bypass
The Noise Filter averages any minor changes in the input signal and displays the
reading with greater stability. Quick, small input spikes will not be immediately
reflected on the display. However, the meter can be programmed to filter only small
changes. Larger input changes can be displayed immediately by setting a Noise
Filter Bypass value. If the input signal spikes beyond the Noise Filter Bypass value
the signal will NOT be averaged but rather immediately reflected on the display.
The noise filter bypass value may be set anywhere between 0.2% and 99.9% of full
scale. Factory default is 2.0. Increasing the noise filter bypass value will slow down
the display response rate.

Models PD696 – PD698 Instruction Manual
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Program Noise Filter and Noise Filter Bypass value
1. Push the front panel button, when FILtEr appears push the button again.
2. All digits flash for 3 seconds.
If this is the desired filter value push the button before the entire display
stops flashing.
If this is not the desired filter value, (or if the button was not pushed in
time to accept the display) wait for the first digit to flash.
Digit flashes for 3 seconds before it scrolls.
3. When digit is OK, push the button next digit to the right will flash for 3 seconds
before it scrolls.
4. When flashing digit is OK, push the button, next digit to the right will flash for 3
seconds before it scrolls.
5. When right most digit is OK, press the button.
6. Entire display will flash for 3 seconds. Press the button within the 3 seconds if
OK. If NOT OK, wait for left digit to flash and go to step 2 above.
7. byPASS appears, then the display shows the current Noise Filter Bypass
value.
8. All digits flash for 3 seconds.
If this is the desired bypass value push the button before the entire
display stops flashing.
If this is not the desired value, (or if the button was not pushed in time to
accept the display) wait for the first digit to flash.
Digit flashes for 3 seconds before it scrolls.
9. When digit is OK, push the button, next digit to the right will flash for 3
seconds before it scrolls.
10. When flashing digit is OK, push the button, next digit to the right will flash for 3
seconds before it scrolls.
11. When right most digit is OK, press the button.
12. Entire display will flash for 3 seconds. Press the button within the 3 seconds if
OK. If NOT OK, wait for left digit to flash and go to step 8 above.

Models PD696 – PD698 Instruction Manual
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TOTALIZER PROGRAMMING
TIME BASE (t bASE)
The meter must be programmed with the time base. The Time Base is the time
unit in which the rate is displayed. For example, if the rate display is set up for
gallons per hour then the time base must be set to hours. The factory default is in
seconds. The rate and total conversion factor are used to calculate the total.
To Set the Time Base:
1. Push the front panel button, when t bASE appears push the button again.
2. The display will start to scroll between the selections of SEC(seconds)*,
min(minutes), Hour(hours).
3. Press the button when desired time base selection appears.
TOTALIZER CONVERSION FACTOR (tot CF)
The Totalizer Conversion Factor is a number that is multiplied by the rate to
compute the total. For example, if the rate display is gallons per hour and the
total is desired in barrels (1 gallon = .02381 barrels), a total conversion factor of
0.02381 should be used. If the rate display is gallons per hour and the total is
desired in gallons, a factor of 1 should be used.
The conversion factor has a selectable decimal point. Because the decimal point
is mathematically significant values such as 1.0000*, 1.000, 1.00, 1.0, and 1
produce identical results. The decimal point should be set so as to produce the
best resolution for the application.
The maximum value for the totalizer conversion factor depends upon the decimal
point selection.
To Set Totalizer Conversion Factor
1. Push the front panel button, when tot CF appears push the button again.
2. 888888 will be displayed and a decimal point will travel from left to right.
Push the button when the decimal point is in the desired position. If no
decimal point is desired, push the button when decimal point is NOT shown.
3. Next, the display shows the current totalizer conversion factor settings.
If this is the desired display push the button before entire display stops
flashing.
If this is not the desired display, (or if the button was not pushed in time
to accept the display) wait for the first digit to flash.
4. First digit flashes for 3 seconds before it scrolls.
5. When flashing digit is OK, push the button; next digit will flash for 3 seconds
before it scrolls.
6. Repeat step 5 for each remaining digit.
7. When last digit is accepted the entire display will flash for 3 seconds. Press
the button within the 3 seconds if OK to complete totalizer conversion factor
setup. If not OK, wait for first digit to flash and go to step 3 above.
* Factory default.

Models PD696 – PD698 Instruction Manual
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TOTALIZER DECIMAL POINT (tot dP)
The decimal point for the totalization display is field selectable and can be placed
at any position.
To set Totalizer Decimal Point
1. Push the front panel button, when tot dP appears push the button again.
2. 888888 will be displayed and a decimal point will travel from left to right.
Push the button when the decimal point is in the desired position. If no
decimal point is desired, push the button when decimal point is NOT shown.
PARAMETER COMBINATIONS
Certain extreme combinations of parameter selections may exceed the totalizer
range of the meter. If this occurs the totalizer might lock-up after a programming
operation or it might lose counts. Steps to correct this situation are:
Decrease the total conversion factor.
or
Decrease the number of decimal places in total.
or
Increase the time base (seconds to minutes or minutes to hours.)
It is recommended to set the rate to zero during programming to prevent lock-up.
If a lock-up occurs, disconnect the signal and connect it back making sure the
signal is equivalent to a zero rate. This will unlock the totalizer and allow changes
to the related parameters.

Models PD696 – PD698 Instruction Manual
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ISOLATED PULSE OUTPUT (PuLSE)
The isolated pulse output signal can be programmed to produce 1 pulse output
per any accumulated total between 1 and 999. For example, the PD696-PD698
can be programmed to produce one pulse for every 500 gallons totalized.
The isolated pulse output signal is calibrated using the front panel button and
uses the same Single Button Scaling technique that is used to calibrate the input
signal.
Pulse Output Calibration
1. Push the front panel button, when PuLSE appears push the button again.
2. Digits flash for 3 seconds
If this is the desired display at which the meter will produce 1 pulse
output, push the button before entire display stops flashing. The meter
will return to display rate or total.
If this is not the desired display, (or if the button was not pushed in time
to accept the display) wait for the first digit to flash.
3. First digit flashes for 3 seconds before it scrolls.
4. When first digit is OK, push the button; next digit will flash for 3 seconds
before it scrolls.
5. When second digit is OK, push the button; next digit will flash for 3 seconds
before it scrolls.
6. When last digit is OK, push the button.
7. Entire display will flash for 3 seconds. Press the front panel button within the
3 seconds if OK to complete the pulse output calibration. If NOT OK, wait for
first digit to flash and go to step 3 above. Factory default is 100.
Note:
If the pulse output exceeds the maximum output
specification (30 pulses/second), the total will flash
and output pulses will be lost.

Models PD696 – PD698 Instruction Manual
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DISPLAY CONTRAST (ContSt)
Display Contrast allows the user to adjust the contrast of the display.
To optimize the display contrast, press the front panel button. When ContSt is
displayed press the button again.
A special pattern “oooooo” will be shown and the contrast will
automatically increase and decrease.
Press the button when the desired contrast is displayed.
LOCKOUT
Install jumper JP1 to restrict modification of calibration values. When the front
panel button is pushed with the lockout jumper in place only dSPy r, dSPy t,
rSEt t, and dSPLAy routine titles are shown, if selected.
The PD696’s JP1 jumper is located at rear of instrument.
The PD697’s and PD698’s JP1 jumper is located on the top of the display board.
DISPLAY SELECTION (DSPLAY)
With the lockout jumper in place the routine titles of dSPy r, dSPy t,rSEt t,
and dSPLAy can still be accessed. The dSPLAy menu is used to program the
meter to:
1. Display rate only or display total only.
2. Automatically alternate between displaying rate and total every 10
seconds.
3. Restrict the total from being reset.
See chart on next page
To block or change the display titles
1. Push the front panel button, when dSPLAy appears press the button again.
2. The display will start to scroll between the selection choices of dSPy r,
dSPy t, and rSEt t.
3. Press the button when desired routine title appears.
4. Display will flash yes or no alternately. Press the button when yes is
flashing to unblock title from being displayed. Press the button when no is
flashing to block title from being displayed.
5. Next title appears, go to step 3.
6. After last title is selected meter will revert to normal indication mode.

Models PD696 – PD698 Instruction Manual
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Alternating Display
The display may be programmed to alternate between rate and total every 10
seconds.
To automatically alternate between rate and total select no for both dSPy r and
dSPy t (see Display Selection (dSPLAy) above).
Display Selection Choices (dSPLAy)
Menu Display Choice Result
dSPy r
dSPy t
yes
yes
Manually select display rate or display total
dSPy r
dSPy t
no
yes
Display total only
dSPy r
dSPy t
yes
no
Display rate only
dSPy r
dSPy t
no
no
Automatically alternate between rate and total
every 10 seconds
rSEt t yes Able to reset total to zero with front panel
button
rSEt t no NOT able to reset total
Notes:
1. Select no for both dSPy r and dSPy t to program display to alternate
between rate and total every 10 seconds.
2. Total can be reset with an external switch even if rSEt t is set to no.

Models PD696 – PD698 Instruction Manual
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OPERATION
DEFAULT DISPLAY (DSPLY T or DSPLY R)
If the meter is programmed for manual display, the user may select either rate or
total to be set as the default displayed reading. When displaying rate an “r”
symbol is displayed at left side of the display.
Switching Default Display
1. Push the button, when dSPLy t or dSPLy r appears, push the button again.
2. Default display will switch from rate to total or vice versa depending on
previous setting.
TOTALIZER RESET (RSET T)
To reset the totalizer to zero via the front panel
1. Push the front panel button, when rSEt t appears, push the button again.
2. The total will reset to zero and start totalizing immediately.
To reset the totalizer to zero via a user supplied remote push button.
1. Connect a momentary (normally open) push button to terminals R and CM.
2. Closing the contacts will reset the total to zero. The totalizer will start
totalizing once the contacts are re-opened.
LOW SIGNAL DETECTOR
These meters have circuits that monitor the loop signal. To protect against data
loss the meter will shut down when the current falls below specifications.
At power-up the meter performs a self-test and flashes the display for a few
seconds. If the signal is below specifications the meter will not start up.

Models PD696 – PD698 Instruction Manual
19
INSTALLATION
PD696 Panel Mount
6" (152 mm) Clearance
4.25" (108 mm)
4.83" (123 mm)
Required for Installation
2.30"
(59 mm)
4.30" (109 mm)
Installed
0.575" (14.6 mm)
Panel Thickness
0.125" - 0.250" (3.2 - 6.4 mm)
Notes:
1. Panel cutout required: 1.772" x 3.622" (45 mm x 92 mm) 1/8 DIN
2. Panel thickness: 0.125" - 0.250" (3.2 mm - 6.4 mm)
3. Clearance: allow 6 inches (152 mm) behind the panel
PD697 NEMA 4X
Installation of the PD697 involves removing the display board from its enclosure
and connecting ½" conduit fittings to the hole provided. It may be necessary to
remove the input signal board depending on type of conduit hubs used. Wall
mounting holes are located in each corner of the enclosure.
Wall
Mounting
Holes
Beneath
Cover
Screws
E
F
D
AC
B
A: 3.15" (80 mm) C: 2.36" (60 mm) E: 2.56" (65 mm)
B: 5.51" (140 mm) D: 4.72" (120 mm) F: 0.79" (20 mm)

Models PD696 – PD698 Instruction Manual
LIM696_G.doc
SFT004 Ver 1.020 & up
09/05
www.predig.com
PD698 Explosion-Proof
Installation of the PD698 involves removing the display board from its enclosure
and connecting ¾" NPT fittings to the holes provided. It may be necessary to
remove the input signal board depending on type of fittings used. Wall mounting
holes are located in two corners of the enclosure.
Caution!
When servicing the unit in a hazardous area, all appropriate
hazardous area procedures must be followed.
D
CB
A
0.31"
(7.9 mm)
A: 5.62" (143 mm) C: 5.43" (138 mm)
B: 5.62" (143 mm) D: 4.06" (103 mm)
Disclaimer
The information contained in this document is subject to change without
notice. Precision Digital 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.