Precision Digital Corporation ProtEX PD663-SS User manual

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
•CSA Certified Stainless Steel Explosion-Proof Loop-Powered Meter
•4-20 mA Input with ±0.05% Accuracy of Calibrated Span
•1.7 Volt Drop (4.7 Volt Drop with Backlight)
•Easy Field Scaling in Engineering Units without a Calibrator
•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
•Operating Temperature Range: -40 to 75°C (-40 to 167°F)
•Installation Temperature Range: -55 to 75°C (-67 to 167°F)
•Four Internal Buttons for Easy Field Scaling
•Max/Min Display
•Programmable Noise Filter
•32-Point Linearization & Square Root Extraction
•Conformal Coated PCBs for Dust & Humidity Protection
•CSA Certified for Explosion-Proof / Dust-Ignition Proof / Flame-Proof
•Built-In Flange for Wall or Pipe Mounting
•Explosion-Proof, IP68, NEMA 4X 316 Stainless Steel Enclosure
•Two 1/2" NPT or M20 Conduit Openings
•1.5" U-Bolt Kit & 2" Pipe Mounting Kit Available
•Stainless Steel Tag Available
•3-Year Warranty

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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Table of Contents
Introduction......................................................................................................... 4
Ordering Information.......................................................................................... 5
Physical Features............................................................................................... 6
Great for Cold Temperatures ........................................................................ 6
Electronics Module ........................................................................................ 6
Easy Pipe Mounting....................................................................................... 7
Rotatable Display Module.............................................................................. 7
Tamper-Proof Capability................................................................................ 7
Stainless Steel Tag Attaching Loop ............................................................. 7
Accessories ........................................................................................................ 8
Useful Tools........................................................................................................ 8
Specifications..................................................................................................... 9
General............................................................................................................ 9
Input ................................................................................................................ 9
Enclosure........................................................................................................ 9
Electromagnetic Compatibility.................................................................... 10
Product Ratings and Approvals.................................................................. 10
EU Declaration of Conformity............................................................................. 10
Safety Information............................................................................................ 10
Installation......................................................................................................... 11
Unpacking..................................................................................................... 11
Mounting....................................................................................................... 11
Cover Jam Screw ......................................................................................... 11
Dimensions....................................................................................................... 11
Connections...................................................................................................... 12
Wiring Diagrams........................................................................................... 12
Setup and Programming.................................................................................. 13
Overview....................................................................................................... 13
Buttons and Display..................................................................................... 13
Setting Numeric Values............................................................................... 13
Programming the Meter............................................................................... 13
Main Menu..................................................................................................... 13
Main Menu Display Functions & Messages ............................................... 14
Setting the Decimal Point (dP) ................................................................... 14
Scaling the Meter (SCL).............................................................................. 14
Calibrating the Meter (Cal) ........................................................................ 15
Re-calibrating the Internal Calibration Reference (ICal)........................... 15
Advanced Features Menu............................................................................ 15
Advanced Features Menu & Display Messages......................................... 15
Signal Input Conditioning Function (Fnc)................................................... 16
Information Menu (info)............................................................................ 16
Input Signal Filter (FIL).............................................................................. 16
Internal Calibration (ICal).......................................................................... 16
Operation........................................................................................................... 17
Front Panel Buttons Operation................................................................... 17
Maximum & Minimum Readings (HI & LO)................................................. 17
Reset Meter to Factory Defaults.................................................................. 18
Factory Defaults & User Settings................................................................ 18
Troubleshooting............................................................................................... 19
Troubleshooting Tips................................................................................... 19
Quick User Interface Reference ...................................................................... 19

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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Table of Figures
Figure 1. Enclosure Dimensions –Front View................................................... 11
Figure 2. Enclosure Dimensions –Side View .................................................... 11
Figure 3. Enclosure Dimensions –Top View ..................................................... 11
Figure 4. PD663-SS Meter Assembly, Rear View............................................... 12
Figure 5. PD663-SS Input Connections without Backlight................................ 12
Figure 6. PD663-SS Input Connections with Backlight..................................... 12

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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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.
© 2022 Precision Digital Corporation.
All rights reserved.
Introduction
The ProtEX-Lite PD663-SS is a loop-powered field
meter housed in a 316 stainless steel enclosure that
is CSA Certified as Explosion-Proof, Dust-Ignition
Proof, and Flame-Proof. The PD663-SS is easy to in-
stall and program and it can be seen in a variety of
lighting conditions, even in bright sunlight. It will oper-
ate down to -40°C and can be installed in areas
where the temperature gets as cold as -55°C, how-
ever, the display will cease functioning.
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 re-
sults in a minimal burden on the loop. Loop-powered
backlighting is a standard feature that allows the me-
ter to be read in dimly lit areas.
The meter features a wide -40 to 75°C operating
temperature range and is available with two 1/2" NPT
or M20 threaded conduit openings and a built-in
flange for wall or pipe mounting. Calibration is a quick
process involving the four internal pushbuttons. The
3½+ digits display on the ProtEX-Lite will read up to
2999.

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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Ordering Information
Model
Description
PD663-0K0-SS
Explosion-Proof Stainless
Steel Loop-Powered Process
Meter with Backlight and Two
1/2" Conduit Openings
PD663-0K0-SS-M20
Explosion-Proof Stainless
Steel Loop-Powered Process
Meter with Backlight and Two
M20 Conduit Openings
Accessories
Model
Description
PDAPLUG50
1/2" NPT 316 Stainless
Steel Conduit Plug with
Approvals
PDAPLUGM20
M20 316 Stainless Steel
Conduit Plug with Approval
PDAADAPTER-50M-75F
M-1/2" NPT to F-3/4" NPT
Adapter with Approvals
PDAADAPTER-50M-M20F
M-1/2" NPT to F-M20
Adapter with Approvals
PD9501
Multi-Function Calibrator
PD9502
Low-Cost Signal Generator
PDA1001
USB Power Bank
PDA1002
6" DIN Rail Mounting Kit
PDA1024-01
24 VDC Power Supply for
DIN Rail
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-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)
Note: Unless otherwise specified, the above accessories do not
carry hazardous area approvals and are thus not suitable for
location in hazardous areas.

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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Physical Features
The ProtEX-Lite PD663-0K0-SS comes with two 1/2" NPT conduit openings and the PD663-0K0-SS-M20 comes with
two M20 conduit openings
Great for Cold Temperatures
The ProtEX-Lite PD663-SS will operate over a
temperature range of -40 to 75°C (-40 to 167°F).
Below -40°C, the display will cease functioning,
however, the instrument is approved to be installed in
locations where the temperature goes down to -55°C.
Electronics Module
The PD663-SS electronics module is housed in a
plastic enclosure that provides a degree of
environmental protection for the electronics circuitry.
The module is mounted to the enclosure with spring-
loaded thumbscrews and can be oriented in 0°, 90°,
180°, or 270° increments. Connections are made to a
removable screw terminal block.

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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Easy Pipe Mounting
The ProtEX-Lite comes with a built-in mounting flange.
This allows for easy mounting to walls or pipes using
the PDA6631-SS Stainless Steel U-Bolt Kit for a 1.5”
pipe or the PDA6863-SS Stainless Steel Pipe Mount-
ing Kit for a 2” pipe. A slot on the back of the enclosure
makes it easy to center the unit on a pipe.
PDA6631-SS 1.5"U-Bolt Kit
PDA6863-SS 2"Pipe Mounting Kit
Rotatable Display Module
The display module can be rotated in 90° increments
providing added mounting flexibility. Plus the various
conduit connections allow a variety of installation
options.
Tamper-Proof Capability
The instrument can be made tamper-proof by insert-
ing a wire through the built-in loop on the base of the
enclosure and a hole in the lid of the enclosure and
securing this wire with a lead seal.
Stainless Steel Tag Attaching
Loop
The enclosure is equipped with a loop at the top to
easily attach a PDA-SSTAG stainless steel tag.

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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Accessories
PDA1024-01 24 VDC Power Supply
The PDA1024-01 is a DIN rail mounted 1.5 A,
24 VDC power supply that can be used to power
the 4-20 mA transmitter.
PDA6631-SS 1.5"U-Bolt Kit
The PDA6631-SS U-Bolt Kit provides a convenient
way to mount the PD663-SS to a 1.5" pipe.
PDA6863-SS 2"Pipe Mounting Kit
The PDA6863-SS Pipe Mounting Kit provides a
convenient way to mount the PD663-SS to a 2" pipe.
PDA-SSTAG Stainless Steel Tag
The PDA-SSTAG is a laser etched stainless 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.
Dimensions
Useful Tools
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 to use
4-20 mA or 0-10 VDC signal generator. It can easily
be set for 0-20 mA, 4-20 mA, 0-10 V or 2-10 V
ranges. Signal adjustment is made with a one-turn
knob. A 15-27 VDC wall plug is provided with the
instrument. Optional USB power bank is available.

PD663-SS 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
Loop-Powered
Backlight
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.
Display
Update Rate
2 updates/second
Display
Orientation
Display may be mounted at 90° increments
up to 270° from default orientation.
Overrange
Display flashes 2999
Underrange
Display flashes -1999
Programming
Method
4 Internal pushbuttons (behind glass)
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
Installation temperature range: -55 to 75°C
Relative humidity: 0 to 90% non-condensing
Printed circuit boards are conformally coated.
Connections
Removable screw terminals accept
12 to 22 AWG wire
Mounting
May be mounted directly to conduit.
Two mounting holes for 1.5" pipe or wall
mounting. See Dimensions on page 11.
Tightening
Torque
Screw terminal electrical connectors:
4.5 lb-in (0.5 Nm)
Overall
Dimensions
4.30" x 4.27" x 3.66"
(109 mm x 108 mm x 93 mm)
(W x H x D)
Weight
5.00 lbs (80 oz, 2.3 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% of calibrated span ±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
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.
Enclosure
Material
ASTM A743 CF8M investment-cast
316 stainless steel
Gasket (O-Ring)
Fluoroelastomer
Rating
NEMA 4X, IP68 Explosion-proof
Color
Silver
Window
Borosilicate glass
Conduits
PD663-0K0-SS: Two 1/2" NPT
PD663-0K0-SS-M20: Two M20
Flange
Built-in flange for wall and pipe mounting.
Tamper-Proof
Seal
Cover may be secured with tamper-proof
seal.
ATEX & IECEx
(enclosure only)
Flameproof protection
II 2GD
Ex db IIC Gb; Ex tb IIIC Db
IP66/IP68
Tamb: -55°C to +85°C
Certificate No.: Sira 19ATEX1252U
Certificate No.: IECEx SIR 19.0075U
CSA
(enclosure only)
Class I, Division 1, Groups A, B, C,D
Class II, Division 1, Group E, F, G
Class III
Ex db IIC Gb; Ex tb IIIC Db
Class I, Zone 1, AEx db IIC Gb
Zone 21, AEx tb IIIC Db
IP66/IP68/TYPE 4X
Tamb: -55°C to +85°C
Certificate No.: 80011200
UL
(enclosure only)
Class I, Division 1, Groups A, B, C, D
Class II, Division 1, Groups E, F, G
Class III
Class I, Zone 1, AEx db IIC Gb
Zone 21, AEx tb IIIC
Ex db IIC Gb; Ex tb IIIC Db
IP66/IP68/TYPE 4X
Tamb: -55°C to +85°C
Certificate Number: E518920
Note: The above approvals are for the enclosure only. See next page
for approvals on the entire instrument.

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
10
Electromagnetic Compatibility
Emissions
EN 61326
Safety requirements for measurement,
control, and laboratory use –Industrial
Group 1 Class A ISM emissions
requirements
Radiated
Emissions
Class A
Immunity
EN 61326
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
Product Ratings and Approvals
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 = -55 to 75°C.
Enclosure: Type 4X & IP66/IP68.
Certificate number: 2325749
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.
EU Declaration of Conformity
For shipments to the EU and UK, a Declaration of Conform-
ity was printed and included with the product. For reference,
a Declaration of Conformity is also available on our web-
site www.predig.com/docs.
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.

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
11
Installation
For Installation in USA: The PD663-SS 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-SS 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.
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.
Mounting
The PD663-SS 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-SS can be mounted to a 2" pipe by using
the PDA6863-SS pipe mounting kit or to a 1.5" pipe
using the PDA6631-SS 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
prevent 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 contacts the meter. Turn the screw an
additional 1/4 to 1/2 turn to secure the cover.
•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 View
Figure 3. Enclosure Dimensions –Top View

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
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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
B-
4-20 mA signal return/negative terminal
when using the installed loop powered
backlight option
See Figure 4 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 4. PD663-SS Meter Assembly, Rear View
Wiring Diagrams
Signal input connections are made to a three-terminal
connector labeled S+|S-|B-. 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 5.
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 6.
Figure 5. PD663-SS Input Connections without Backlight
Figure 6. PD663-SS Input Connections with Backlight

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
13
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 19.
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 15.
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-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
14
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 input to the meter must be at least 6 mA
prior to pressing the Enter button at the
completion of programming for programming
parameters to be saved.
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 13.
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-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
15
Calibrating the Meter (Cal)
To scale the meter without a signal source refer to
Scaling the Meter (SCL), page 14.
•The input to the meter must be at least 6 mA
prior to pressing the Enter button at the
completion of programming for programming
parameters to be saved.
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 16 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)
F
Calibration
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-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
16
Signal Input Conditioning
Function (Fnc)
The PD663-SS 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 15.
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-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
17
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-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
18
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 15.
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-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
19
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 6.
PD663-SS Input Connections
with Backlight on page 12.
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
*Access by pressing Right arrow twice
Press & holdMenu for 5
seconds to access Advanced
Features Menu
Filter
Initial
Calibrate
Information
*Factory
Defaults
Function
Advanced Menu

PD663-SS Explosion-Proof Loop-Powered Meter
Instruction Manual
PRECISION DIGITAL CORPORATION
233 South Street • Hopkinton MA 01748 USA
Tel [phone] • Fax [phone]
www.predig.com
LIM663-SS_C
SFT054 Ver 1.800 & up
12/22
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