Precision Digital Corporation PD663 User manual

PD663 Explosion-Proof Loop-Powered Meter
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•Fully-Approved Explosion-Proof Loop-Powered Meter
•4-20 mA Input with ±0.05% FS Accuracy
•1.7 Volt Drop (4.7 Volt Drop with Backlight)
•Easy Field Scaling in Engineering Units without Applying an Input
•0.6" (15.2 mm) 3½+ Digits LCD Display; -1999 to 2999
•Display Mountable at 0°, 90°, 180°, & 270°
•HART®Protocol Transparent
•Loop-Powered Backlight Option
•Operating Temperature Range: -40 to 75°C (-40 to 167°F)
•Four Internal Buttons for Easy Field Scaling
•Max/Min Display
•Programmable Noise Filter
•32-Point Linearization & Square Root Extraction
•FM Approved as Explosion-Proof / Dust-Ignition Proof / Flame-Proof
•CSA Certified as Explosion-Proof / Dust-Ignition Proof / Flame-Proof
•ATEX and IECEx Certified as Flame-Proof and Protection by Enclosure
•Conformal Coated PCBs for Dust and Humidity Protection
•Flanges for Wall or Pipe Mounting
•Explosion-Proof, IP68, NEMA 4X Die-Cast Aluminum Enclosure
•Two ½" NPT Threaded Conduit Openings (One Plug Installed)
•1.5" U-Bolt Kit & 2" Pipe Mounting Kits Available
•Stainless Steel Tag Available
•3-Year Warranty

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
2
Disclaimer
The information contained in this document
is subject to change without notice. Precision
Digital Corporation makes no representations
or warranties with respect to the contents hereof;
and specifically disclaims any implied warranties
of merchantability or fitness for a particular
purpose.
•Read complete instructions prior to installation
and operation of the meter.
•Risk of electric shock or personal injury.
•This product is not recommended for life support
applications or applications where malfunctioning
could result in personal injury or property loss.
Anyone using this product for such applications
does so at his/her own risk. Precision Digital
Corporation shall not be held liable for damages
resulting from such improper use.
•Failure to follow installation guidelines could
result in death or serious injury. Make sure only
qualified personnel perform the installation.
•Never remove the meter cover in explosive
environments when the circuit is live.
•Cover must be fully engaged to meet
flameproof/explosion-proof requirements.
WARNING
Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Limited Warranty
Precision Digital Corporation warrants this
product against defects in material or
workmanship for the specified period under
“Specifications” from the date of shipment from
the factory. Precision Digital’s liability under this
limited warranty shall not exceed the purchase
value, repair, or replacement of the defective unit.
See Warranty Information and Terms &
Conditions on www.predig.com for complete
details.
© 2020 Precision Digital Corporation.
All rights reserved.
Introduction
The PD663 is a loop-powered field meter that is FM
Approved and CSA Certified as Explosion-Proof,
Dust-Ignition Proof, and Flame-Proof, and ATEX &
IECEx Certified as Flame-Proof and Protection by
Enclosure. The PD663 is easy to install and program
and it can be seen in a variety of lighting conditions
and even in bright sunlight. The fact that this meter is
loop-powered means that there is no need to run
additional, costly power lines into a hazardous area.
The meter gets all the power it needs from the
4-20 mA loop and its 1.7 V drop results in a minimal
burden on the loop.
The meter features a wide -40 to 75°C operating
temperature range and comes with two 1/2" NPT
threaded conduit openings and flanges for wall or
pipe mounting. Calibration is a quick process
involving the four internal push buttons. The PD663’s
display will read up to 2999; we call this 3½+ digits!
Ordering Information
Model
Options Installed
PD663-0L0-00 None
PD663-0K0-00 Loop-Powered Backlight
Accessories
Model
Description
PDA0003 ½" M-NPT to ¾" F-NPT Adapter
PDA1024-01 24 VDC Power Supply for DIN Rail
PDA6631
Steel 1.5" U-Bolt Kit.
All Material: Zinc Plated Steel; (1) U-Bolt
for 1.5" Pipe with (2 each) Washers,
Lock Washers, and Nuts.
PDA6631-SS
Stainless Steel 1.5" U-Bolt Kit.
All Material: Stainless Steel; (1) U-Bolt
for 1.5" Pipe with (2 each) Washers,
Lock Washers, and Nuts.
PDA6863
Steel 2" Pipe Mounting Kit.
All Material: Zinc Plated Steel; (1) Plate
with (2 each) Bolts, Washers, Lock
Washers & Nuts to Mount Meter.
(1) U-Bolt for 2" Pipe with (2 each)
Washers, Lock Washers & Nuts.
PDA6863-SS
Stainless Steel 2" Pipe Mounting Kit.
All Material: Stainless Steel; (1) Plate
with (2 each) Bolts, Washers, Lock
Washers & Nuts to Mount Meter.
(1) U-Bolt for 2" Pipe with (2 each)
Washers, Lock Washers & Nuts.
PDA-SSTAG Custom Stainless Steel Tag (see
website for convenient ordering form)

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
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Table of Contents
Introduction......................................................................................................... 2
Ordering Information.......................................................................................... 2
Specifications ..................................................................................................... 4
General............................................................................................................ 4
Input ................................................................................................................ 4
Electromagnetic Compatibility...................................................................... 4
Product Ratings and Approvals.................................................................... 5
Safety Information .............................................................................................. 5
Installation........................................................................................................... 5
Unpacking....................................................................................................... 5
Pre-Installed Conduit Plug ............................................................................ 6
Mounting ......................................................................................................... 6
Cover Jam Screw ........................................................................................... 6
Dimensions ......................................................................................................... 6
Connections........................................................................................................ 7
Wiring Diagrams............................................................................................. 7
Setup and Programming.................................................................................... 8
Overview ......................................................................................................... 8
Buttons and Display....................................................................................... 8
Setting Numeric Values ................................................................................. 8
Programming the Meter ................................................................................. 8
Main Menu....................................................................................................... 8
Main Menu Display Functions & Messages ................................................. 9
Setting the Decimal Point (dP) ..................................................................... 9
Scaling the Meter (SCL)................................................................................ 9
Calibrating the Meter (Cal) ........................................................................ 10
Re-calibrating the Internal Calibration Reference (ICal) ........................... 10
Advanced Features Menu............................................................................ 10
Advanced Features Menu & Display Messages......................................... 10
Signal Input Conditioning Function (Fnc) ................................................... 11
Information Menu (info)............................................................................ 11
Input Signal Filter (FIL).............................................................................. 11
Internal Calibration (ICal).......................................................................... 11
Operation........................................................................................................... 12
Front Panel Buttons Operation ................................................................... 12
Maximum & Minimum Readings (HI & LO)................................................. 12
Reset Meter to Factory Defaults.................................................................. 13
Factory Defaults & User Settings................................................................ 13
Troubleshooting ............................................................................................... 14
Troubleshooting Tips................................................................................... 14
Quick User Interface Reference ...................................................................... 14
EU Declaration of Conformity.......................................................................... 15
Table of Figures
Figure 1. Enclosure Dimensions – Front View................................................... 6
Figure 2. Enclosure Dimensions –Side Cross Section View .......................... 6
Figure 3. PD663 Meter Assembly, Rear View ..................................................... 7
Figure 4. PD663 Input Connections without Backlight ..................................... 7
Figure 5. PD663 Input Connections with Backlight ........................................... 7

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
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Specifications
Except where noted all specifications apply to operation at +25°C.
General
Display 0.6" (15.2 mm) LCD, 3½+ digits;
-1999 to 2999
Display
Update Rate
2 Updates/Second
Overrange Display flashes 2999
Underrange Display flashes -1999
Programming
Method
Four internal pushbuttons
Noise Filter Programmable
HI
,
LO
, or
OFF
Recalibration Recalibration is recommended at least every
12 months.
Max/Min
Display
Max/Min readings reached by the process are
stored until reset by the user or until power to
the meter is turned off.
Non-Volatile
Memory
All programmed settings are stored in
non-volatile memory for a minimum of
ten years if power is lost.
Normal Mode
Rejection
64 dB at 50/60 Hz
Environmental
Operating temperature range: -40 to 75°C
Storage temperature range: -40 to 75°C
Relative humidity: 0 to 90% non-condensing
Connections Removable screw terminals accept
12 to 22 AWG wire
Enclosure Explosion-proof die cast aluminum with glass
window, 0.30% max copper content, corrosion
resistant epoxy coating,
color: blue. NEMA 4X, 7, & 9, IP68.
Two ½" NPT threaded conduit openings.
One ½" NPT nickel plated brass conduit plug
with 10 mm hex key fitting installed.
Mounting May be mounted directly to conduit.
Two mounting holes for 1.5" pipe or wall
mounting. See Dimensions on page 6.
Tightening
Torque
Screw terminal electrical connectors:
4.5 lb-in (0.5 Nm)
Overall
Dimensions
4.84" x 4.29" x 3.62"
(123 mm x 109 mm x 92 mm)
(W x H x D)
Weight
2.45 lbs (40 oz, 1.13 kg)
Warranty 3 years parts and labor. See Warranty
Information and Terms & Conditions on
www.predig.com for complete details.
Input
Input
4-20 mA
Accuracy
±0.05% FS ±1 count
Function
Linear (2 to 32 points) or square root
Temperature Drift
50 PPM/°C from -40 to 75°C ambient
Decimal Point
User selectable decimal point
Minimum Span
Input 1 & Input 2: 0.40 mA
Calibration Range
An Error message will appear if input 1 and
input 2 signals are too close together.
Input
Range
4-20 mA
Minimum Span
Input 1 & Input 2
0.40 mA
Maximum
Voltage Drop &
Equivalent
Resistance
Without Backlight
With Backlight
1.7 VDC @ 20 mA 4.7 VDC @ 20 mA
85 Ω @ 20 mA 235 Ω @ 20 mA
Loop-Powered
Backlight Option
Factory installed only. Powered directly
from the 4-20 mA loop, no batteries
required. Backlight can be enabled or
disabled via alternative wiring of terminal
block. The display brightness will increase
as the input signal current increases.
Input
Overload
Over current protection to 2 A max.
HART
Transparency
The meter does not interfere with existing
HART communications; it displays the 4-20
mA primary variable and it allows the HART
communications to pass through without
interruption.
The meter is not affected if a HART
communicator is connected to the loop.
The meter does not display secondary
HART variables.
Electromagnetic Compatibility
Emissions
EN 61326:2013
Safety requirements for measurement,
control, and laboratory use – Industrial
Group 1 Class A ISM emissions
requirements
Radiated
Emissions
Class A
Immunity
EN 61326:2013
Safety requirements for measurement,
control, and laboratory use
ESD
±4 kV contact,
±8 kV air
RFI – Amplitude
Modulated
80-1000 MHz @ 10 V/m,
1.4-2.0 GHz @ 3 V/m,
2.0-2.7 GHz @ 1 V/m,
80% AM (1 kHz)
EFT
±2 kV DC mains, ±1 kV other
Telco Surge
±1 kV
CRFI
3 V, 0.15-80 MHz,
1 kHz 80% AM

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
5
Product Ratings and Approvals
FM
Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Class I, Zone 1, AEx d Group IIC; T6
Protection by Enclosure:
Zone 21, AEx tb IIIC; T85°C
Ta = -40 to 75°C.
Enclosure: Type 4X, IP66.
Certificate number: 3040391
CSA
Explosion-proof for use in:
Class I, Division 1, Groups B, C and D
Dust-ignition proof for use in:
Class II/III, Division 1, Groups E, F and G; T6
Flame-proof for use in:
Zone 1, Ex d IIC T6
Ta = -40 to 75°C.
Enclosure: Type 4X & IP66/IP68.
Certificate number: 2325749
ATEX
II 2 G D. Flame-proof for use in:
Zone 1, Ex d IIC T6 Gb
Protection by Enclosure for use in:
Dust Atmospheres (Zone 21)
Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
Certificate number: Sira 10ATEX1116X
IECEx
Flame-proof for use in:
Zone 1, Ex d IIC T6 Gb
Protection by Enclosure for use in:
Dust Atmospheres (Zone 21)
Ex tb IIIC T85°C Db IP68.
Ta = -40°C to +75°C
Certificate number: IECEx SIR 10.0056X
Special Conditions for Safe Use:
Use suitably certified and dimensioned cable entry
device and/or plug. The equipment shall be installed
such that the supply cable is protected from
mechanical damage. The cable shall not be subjected
to tension or torque. If the cable is to be terminated
within an explosive atmosphere, then appropriate
protection of the free end of the cable shall be
provided.
Year of Construction:
This information is contained within the serial number
with the first four digits representing the year and
month in the YYMM format.
For European Community: The PD663 must be
installed in accordance with the ATEX directive
94/9/EC and the product certificate Sira
10ATEX1116X.
Safety Information
•Read complete instructions prior to installation
and operation of the meter.
•Installation and service should be performed only
by trained service personnel. Service requiring
replacement of internal components must be
performed at the factory.
•Disconnect from supply before opening
enclosure. Keep cover tight while circuits are
alive. Conduit seals must be installed within 18"
(450mm) of the enclosure.
•Verify that the operating atmosphere of the meter
is consistent with the appropriate hazardous
locations certifications.
•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.
Installation
For Installation in USA: The PD663 must be
installed in accordance with the National Electrical
Code (NEC) NFPA 70.
For Installation in Canada: Install in accordance
with applicable local and national regulations (e.g.
NEC). The PD663 must be installed in accordance
with the Canadian Electrical Code CSA 22.1. All input
circuits must be derived from a CSA approved Class
2 source.
For European Community: The PD663 must be
installed in accordance with the ATEX directive
94/9/EC and the product certificate Sira
10ATEX1116X.
All pushbuttons and wiring connectors are accessed
by opening the enclosure. To access electrical
connectors, remove the 2 captive screws and remove
the meter assembly.
•Disconnect from supply before opening
enclosure. Keep cover tight while circuits are
alive. Conduit seals must be installed within
18" (450mm) of the enclosure.
Unpacking
Remove the meter from box. Inspect the packaging
and contents for damage. Report damages, if any, to
the carrier.
If any part is missing or the meter malfunctions,
please contact your supplier or the factory for
assistance.

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
6
Pre-Installed Conduit Plug
The PD663 is supplied with one pre-installed conduit
plug for installations that do not require the use of
both conduit entries. The conduit plug includes an
internal hexagonal socket recess for removal. The
conduit plug and its factory installation are included in
all hazardous area approvals of this product.
•In hazardous areas, conduit and conduit/stopping
plugs require the application of non-setting
(solvent free) thread sealant. It is critical that all
relevant hazardous area guidelines be followed for
the installation or replacement of conduit or plugs.
Mounting
The PD663 has two mounting holes that may be used
for 1.5" pipe mounting or wall mounting. Alternatively,
the unit may be supported by the conduit using the
conduit holes provided.
The PD663 can be mounted to a 2" pipe by using the
PDA6863 pipe mounting kit or to a 1.5" pipe using the
PDA6631 U-bolt kit.
Refer to Dimensions for details on wall or panel space
requirements.
•Do not attempt to loosen or remove flange bolts
while the meter is in service.
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 pre-
vent the removal of the meter cover in a flameproof
environment without the use of tools. Using a M2 hex
wrench, turn the screw clockwise until the screw con-
tacts the meter. Turn the screw an additional 1/4 to
1/2 turn to secure the cover. Caution: Excess torque
may damage the threads and/or wrench.
Dimensions
All units: inches [mm]
Figure 1. Enclosure Dimensions – Front View
Figure 2. Enclosure Dimensions –
Side Cross Section View
Note: The supplied conduit plug may extend
up to 0.6 in [15 mm] from the conduit opening
when installed.
Ø 0.35 (Ø 9.0) 2.31 (58.6)
4.30 (109.2)
4.27 (108.4)
2.44 (61.9)
2.74 (69.7)
3.62 (92.0)
2.17 (55.0)

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
7
Connections
To access the connectors, remove the enclosure
cover and unscrew the two captive stainless steel
screws. Remove the meter assembly from the
enclosure. Signal connections are made to a three-
terminal removable connector on the back of the
meter assembly. Grounding connections are made to
the two ground screws provided on the base – one
internal and one external.
S+ 4-20 mA signal input positive terminal
connection
S- 4-20 mA signal return/negative terminal
connection
X Not connected (no backlight option)
B- 4-20 mA signal return/negative terminal
when using the installed loop powered
backlight option
See Figure 3 for terminal positions on the rear of the
meter assembly.
•Observe all safety regulations. Electrical wiring
should be performed in accordance with all
agency requirements and applicable national,
state, and local codes to prevent damage to the
meter and ensure personnel safety.
•Static electricity can damage sensitive
components.
•Observe safe handling precautions for
static-sensitive components.
•Use proper grounding procedures/codes.
•If the meter is installed in a high voltage
environment and a fault or installation error
occurs, high voltage may be present on any
lead or terminal.
Figure 3. PD663 Meter Assembly, Rear View
Wiring Diagrams
Signal input connections are made to a three-terminal
connector labeled S+|S-|X for models without a
backlight and S+|S-|B- for models with a backlight.
The enclosure also provides one internal and one
external earth grounding screw.
The 4-20 mA input with no backlight has a maximum
voltage drop of 1.7 V and is wired as shown in
Figure 4.
The loop-powered backlight configuration requires a
total maximum voltage drop of 4.7 V. The backlight is
recommended for dim lighting conditions and is
enabled when wired as shown in Figure 5.
The enclosure also provides one internal and one
external earth grounding screw.
Figure 4. PD663 Input Connections without Backlight
Figure 5. PD663 Input Connections with Backlight
WIRING INSTRUCTIONS
Connect signal positive to terminal S+.
Connect signal negative to terminal S-.
If backlight installed, connect
signal negative to terminal B-, not S-.
S+ S- X
S+ S- B-

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
8
Setup and Programming
There is no need to recalibrate the meter for
milliamps when first received from the factory.
The meter is factory calibrated for milliamps prior
to shipment. The calibration equipment is traceable
to NIST standards.
Overview
There are no jumpers involved in the setup process of
the meter.
Setup and programming is done through the front
panel buttons.
After all connections have been completed and
verified, apply power to the loop.
For Quick User Interface Reference go to page 14.
Buttons and Display
Button/
Symbol
Description
MENU
Menu button to enter programming
mode. Press and hold for 5 seconds
to access the Advanced features of
the meter.
ENTER
Enter button to access a menu or
accept a setting.
RESET
Right arrow to scroll through the
menus or move to the next digit or
decimal position during
programming.
Resets the Max or Min display value
when pressed while showing Max or
Min value.
MAX
Up arrow to scroll through the
menus, decimal point, or to
increment the value of a digit.
Displays the Max then Min display
values when pressed during normal
run mode.
Setting Numeric Values
The numeric values are set using the Right and Up
arrow buttons. Press the Right arrow to select next
digit and the Up arrow to increment digit. The two left-
most digits on the display are set as a single digit,
able to display -19 to 29.
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 point is set using the Right or Up arrow
button in the Setup-decimal point menu.
Programming the Meter
The meter may either be scaled (SCL) without
applying an input or calibrated (Cal) by applying an
input. The meter comes factory calibrated to NIST
standards, so for initial setup, it is recommended to
use the (SCL) function. The Program menu contains
the Scale (SCL) and the Calibrate (Cal) menus.
Process inputs may be scaled or calibrated to any
display within the range of the meter.
Additional parameters, not needed for most
applications, are viewed and programmed with the
Advanced Features Menu, see page 10.
Main Menu
The main menu consists of the most commonly used
functions: Decimal Point Location, Scale, and
Calibration.
Press Menu button to enter Programming Mode then
press the Up Arrow button to scroll through the main
menu.
Press Menu, at any time, 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.
The display moves to the next menu every time a
setting is accepted by pressing Enter.

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
9
Main Menu Display Functions &
Messages
The meter displays various functions and messages
during setup, programming, and operation. The
following table shows the main menu functions and
messages in the order they appear in the menu.
Display
Parameter
Action/Setting
dp Decimal point Set decimal point
SCL Scale Enter the Scale menu
Npt Number of Points Set number of linearization
points
in1 Scale Input 1 Input signal 1 value (mA)
D1 Scale Display 1 Scaled value for input 1
in2 Scale Input 2 Input signal 2 value (mA)
D2 Scale Display 2 Scaled value for input 2
CAL Calibrate Enter the Calibrate menu
Npt Number of Points Set number of linearization
points
in1 Calibrate Input 1 Read input signal 1
D1 Calibrate
Display 1
Enter value for input 1
in2 Calibrate Input 2 Read input signal 2
D2 Calibrate
Display 2
Enter value for input 2
Setting the Decimal Point (dP)
Decimal point may be set with up to three decimal
places or with no decimal point at all.
Pressing the Right or Up arrow moves the decimal
point one place to the right until no decimal point is
displayed, then it moves to the left most position.
Scaling the Meter (SCL)
The 4-20 mA input can be scaled to display the
process in engineering units.
A signal source is not needed to scale the meter;
simply program the inputs and corresponding display
values.
If using linear signal input conditioning, enter the
number of scale points (2-32), followed by the input
values and display values. If using square root signal
input conditioning, the number of points input menu
will not be present.
Number of Points (npt)
Set the number of linearization points used in the
Scale menu. 2 to 32 points may be used. The Scale
menu is entered after entering the number of points.
For instructions on how to program numeric values
see Setting Numeric Values, page 8.
Minimum Input Span
The minimum input span is the minimum difference
between input 1 and input 2 signals required to
complete the calibration or scaling of the meter. The
minimum span is 0.40 mA.
If the minimum span is not maintained, the meter
reverts to input 2, allowing the appropriate input
signals to be applied.

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
10
Calibrating the Meter (Cal)
To scale the meter without a signal source refer to
Scaling the Meter (SCL), page 9.
The meter can be calibrated to display the process in
engineering units by applying the appropriate input
signal and following the calibration procedure.
The use of a calibrated signal source is strongly
recommended.
Press the Up arrow button to scroll to the Calibration
menu (CAL) and press Enter.
If using linear signal input conditioning, enter the
number of calibration points (2-32).
The meter displays in1. Apply a known signal and
press Enter. The display will flash while accepting the
signal.
When the meter displays d1, press Enter. Enter a
corresponding display value for the signal input, and
press Enter to accept.
The meter displays in2. Apply a known signal and
press Enter. The display will flash while accepting the
signal.
When the meter displays d2, press Enter. Enter a
corresponding display value for the signal input, and
press Enter to accept.
Re-calibrating the Internal Calibration
Reference (ICal)
The Internal Calibration (ICAL) menu, located in the
Advanced features menu, is used to
recalibrate the internal calibration reference.
Recalibration is recommended at least every twelve
months. Refer to Internal Calibration (ICal),
page 11 for instructions.
Advanced Features Menu
To simplify the setup process, functions not needed
for most applications are located in the Advanced
features menu. Press and hold the Menu button for
five seconds to access the Advanced features menu.
Advanced Features Menu & Display
Messages
The following table shows the Advanced features
menu functions and messages in the order they
appear in the menu.
Display Parameter Action/Setting
Fnc Input Function Set linear or square
root input conditioning
function
Lnr Linear Set linear scaling
Sqr Square Root Set square root input
conditioning function
info Information Enter the Information
menu
Sft Software
Information
Software release
number
ver Version Meter firmware version
C Calibration
Temp (°C)
Temperature at time of
I-calibration (°C)
FCalibration
Temp (°F)
Temperature at time of
I-calibration (°F)
FIL Filter Set filter function level
ICAL I-Calibration Internal master factory
calibration
rst Reset Defaults Restore factory default
parameter settings

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
11
Signal Input Conditioning
Function (Fnc)
The PD663 provides linear and square root signal
input conditioning functions for inputs from linear and
non-linear transmitters.
Linear (Lnr)
Meters are set up at the factory for linear function
using two-point linearization. Multi-point linearization
with up to 32 points may be used. The linear function
provides a display that is linear with respect to the
input signal between each set of input points.
Square Root (sqr)
The square root function is used to linearize the signal
from a differential pressure transmitter and display
flow rate in engineering units.
Information Menu (info)
The Information menu is located in the Advanced
features menu, to access Advanced Features Menu
see, page 10.
It shows software identification number, version
number, and calibration temperatures. To determine
the software version of a meter:
Go to the Information menu (info) and press Enter
button.
The meter will automatically scroll through the
software release number and software version. The
meter temperatures at the time of last internal
calibration in °C and °F are displayed for calibration
troubleshooting. Pressing the Enter, Right, or Up
buttons will progress the information display.
Following the information display, the meter will exit
the Advanced features menu and return to run mode.
Input Signal Filter (FIL)
The noise filter is available for unusually noisy signals
that cause an unstable process variable display. The
noise filter averages the input signal over a certain
period. The filter level can be set to low (LO), high
(HI), or off (OFF). The higher the filter setting, the
longer the averaging 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, abrupt changes to the input signal are
displayed immediately.
Internal Calibration (ICal)
There is
no need to recalibrate
the meter for
milliamps when first received from the factory.
The meter is factory calibrated for milliamps prior
to shipment. The calibration equipment is traceable
to NIST standards.
The internal calibration allows the user to scale the
meter without applying a signal. The use of a
calibrated signal source is necessary to perform the
internal calibration of the meter. Check calibration of
the meter at least every 12 months.
Notes:
The signal source must have a full-scale accuracy
of 0.01% or better between 4 and 20 mA in order
to maintain the specified accuracy of the meter.
Allow the meter to warm up for at least 15 minutes
before performing the internal calibration
procedure.
The Internal calibration menu is part of the Advanced
features menu.
Press and hold the Menu button for 5 seconds to
enter the Advanced features menu. Press the Up
arrow button to scroll to the Internal Calibration menu
(ICAL) and press Enter.
The meter displays 4.00 mA. Apply a 4.00 mA signal
and press Enter. The display flashes for a moment
while the meter is accepting the signal.
After the signal is accepted, the meter displays 20.00
mA. Apply a 20.00 mA signal and press Enter. The
display flashes for a moment while the meter is
accepting the signal.
Error Message (Err)
An error message indicates that the calibration
process was not successful. After the error message
is displayed, the meter will revert to input 2 calibration
settings. The error message might be caused by
inadvertently leaving the signal at the previous level
or not maintaining a 0.40 mA minimum span. Press
the Menu button to cancel the current calibration
process if necessary.

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
12
Operation
Front Panel Buttons Operation
Button
Symbol
Description
MENU
Press to enter or exit Programming
Mode or exit Max/Min readings.
ENTER
Press to indefinitely display Max or
Min until Menu button is pressed.
RESET
Press to reset Max or Min reading.
MAX
Press to display Max/Min readings
alternately.
Maximum & Minimum Readings
(HI & LO)
The maximum and minimum (peak & valley) readings
reached by the process are stored in the meter since
the last reset or power-up. The meter flashes HI or LO
to differentiate between run mode and max/min
display.
Press Up arrow button to display maximum reading
since the last reset/power-up.
Press Up arrow again to display the minimum reading
since the last reset/power-up.
Press Enter to continue to display the Max or Min
display reading by disabling the Max/Min timeout. The
meter will continue to track new Max/Min readings.
Press MENU to exit the Max/Min reading.
If Enter is not pressed, the Max/Min display reading
will continue to flash and time out after ten seconds.
The meter will return to display the actual reading.
Press Right arrow button while in Max/Min Mode to
reset both Max and Min. Max/Min display readings
are reset to the current reading.

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
13
Reset Meter to Factory Defaults
When the parameters have been changed in a way
that is difficult to determine what’s happening, it might
be better to start the setup process from the factory
defaults.
Instructions to load factory defaults:
Enter the Advanced features menu.
See Advanced Features Menu, page 10.
Press Up arrow button to display info menu.
Press Right arrow button when info is shown.
Press Enter button when rSt is shown.
Press Enter again when display flashes rSt.
Note: If Enter is not pressed a second time within
three seconds, rSt will stop flashing and the last
Enter press cancelled.
The meter goes through an initialization sequence
(same as on power-up) and loads the factory default
settings.
Factory Defaults & User
Settings
The following table shows the factory setting for most
of the programmable parameters on the meter. Next
to the factory setting, the user may record the new
setting for the particular application.
Model: _____________________________
S/N: _____________________________
Date: _____________________________
Parameter
Display
Default
Setting
User
Setting
Decimal point Dd.dd 2 places
Scale SCL
Number of
Points NPT 2
Input 1 in1 4.00 mA
Display 1 D1 4.00
Input 2 in2 20.00 mA
Display 2 D2 20.00
Advanced Features
Input
Conditioning
Function
Fnc Linear
Filter FIL Off

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
14
Troubleshooting
The rugged design and the user-friendly interface of
the meter should make it unusual for the installer or
operator to refer to this section of the manual. If the
meter is not working as expected, refer to the
recommendations below.
Troubleshooting Tips
Symptom Check/Action
No display or faint
display
Check input signal
connections.
Perform hard reset by shorting
S+ and S- terminals.
Meter does not
accept
programming
The input to the meter must be
at least 6 mA prior to pressing
the Enter button at the
completion of programming.
Rate display
unsteady
Increase filter setting in
Advanced menu.
Meter displays
error message
during calibration
(
err
)
Check signal connections.
Verify minimum input span
requirements
Meter flashes
2999 or -1999
Check input signal within
scaled range of 2999 and
-1999.
Display stuck
flashing a number
and
HI
or
LO
Press Menu to 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 reset by shorting
S+ and S- terminals.
Backlight does not
appear
Verify backlight is installed.
Check signal connections
are as shown in Figure 5.
PD663 Input Connections with
Backlight on page 7.
Other symptoms
not described
above
Call Technical Support for
assistance.
Quick User Interface
Reference
Pushbutton Function
MENU
Go to Programming Mode, leave
Programming Mode and Max/Min
Mode.
Hold for 5 seconds to enter
Advanced Features menu directly.
RIGHT Arrow Move to next digit or decimal point
position. Reset Max/Min.
UP Arrow
Move to next selection or
increment digit. Go to Max/Min
Mode.
ENTER Accept selection/value and move
to next selection.
MAX/MIN Mode
While in Run Mode, pressing Up Arrow will initiate
MAX/MIN Mode. Up Arrow toggles between MAX &
MIN displays, and Right Arrow resets the MAX/MIN
to the current value. Press Menu or wait 10 seconds
to return to Run Mode. Pressing Enter/Ack will
disable the 10 second timeout and continuously
display Max or Min.
*Access by pressing Right arrow twice
Press & hold Menu for 5
seconds to access Advanced
Features Menu
Filter
Initial
Calibrate
Information
*Factory
Defaults
Function
Advanced Menu

EU Declaration of Conformity
Issued in accordance with ISO/IEC 17050-1:2004 and ATEX Directive 2014/34/EU.
We,
Precision Digital Corporation
233 South Street
Hopkinton, MA 01748 USA
as the manufacturer, declare under our sole responsibility that the product(s),
Model PD663 Series Loop Powered Meter
to which this declaration relates, is in conformity with the European Union Directives shown below:
2014/35/EU Low Voltage Directive
2014/34/EU ATEX Directive
2014/30/EU EMC Directive
2011/65/EU RoHS Directive
This conformity is based on compliance with the application of harmonized or applicable technical
standards and, when applicable or required, a European Union notified body certification.
Standards:
EN 60079-0:2009
EN 60079-1:2007
EN 60079-31:2009
EN 61010-1:2001
EN 61326:2006
The standards EN 60079-0:2009, EN 60079-1:2007, EN 60079-31:2009, EN 61010-1:2001, and EN
61326:2006 are no longer harmonized. The requirements of these standards have been checked
against the harmonized standard EN 60079-0:2018, EN 60079-1:2014, EN 60079-31:2014, EN 61010-
1:2010+A1:2019, and EN 61326:2013 and there were no major technical changes affecting the latest
technical knowledge for the products listed above.
EC Type Examination Certificate: Sira 10ATEX1116X
Product Markings: II 2 G D
Ex d IIC T6 Gb
Ex tb IIIC T85°C Db IP68
Tamb = -40°C to +75°C
ATEX Notified Body for EC Type Examination Certificate: CSA Group Netherlands B.V., NB 2813
Utrechtseweg 310
6812 AR, Arnhem, Netherlands
ATEX Quality Assurance Notification No.: SIRA 10 ATEX M462
ATEX Notified Body for Quality Assurance: CSA Group Netherlands B.V., NB 2813
Utrechtseweg 310
6812 AR, Arnhem, Netherlands
Signed for and on behalf of Precision Digital Corporation:
Name: Jeffrey Peters
Company: Precision Digital Corporation
Title: President
Date: 10/15/2019 Document No: DoC PD663 {101519}

PD663 Explosion-Proof Loop-Powered Meter Instruction Manual
PRECISION DIGITAL CORPORATION
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