Features

Fully-Approved Explosion-Proof Loop-Powered Meters
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
UL Listed as Explosion-Proof / Dust Ignition-Proof / Flame-Proof
CSA Certified as Explosion-Proof / Dust Ignition-Proof / Flame-Proof
ATEX and IECEx Certified as Explosion-Proof
Built-In Flange for Wall or Pipe Mounting
Explosion-Proof, IP68, NEMA 4X Die-Cast Aluminum & Stainless Steel Enclosures
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

Why Use Loop-Powered Meters?

The most basic decision a user wishing to display a 4-20 mA signal on a digital display has to make is: should the meter be powered by line voltage or should it be powered by the 4-20 mA loop?

There are three main benefits of using loop-powered devices:

No additional power required
Easy wiring
Additional digital displays can easily be added in the same loop

The following diagram illustrates how a loop-powered meter is wired. Notice there are only two connections made to the meter.

For more information on loop-powered meters, check out Fundamentals of Loop-Powered Devices and Loop-Powered vs Line-Powered Meters white papers.

Overview

The PD663 is an explosion-proof loop-powered field meter that is available in an aluminum or stainless steel enclosure.

The ProtEX-Lite carries all major approvals including:

UL Listed as Explosion-Proof / Dust Ignition-Proof / Flame-Proof
CSA Certified as Explosion-Proof / Dust Ignition-Proof / Flame-Proof
ATEX and IECEx Certified as Explosion-Proof

The PD663 is easy to install and program and the display can be seen in a variety of lighting conditions, even in bright sunlight. It will operate down to -40°C and is approved for installation in areas where the temperature gets as cold as -55°C, however 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 results in a minimal burden on the loop. Loop-powered backlighting is a standard feature that allows the meter to be read in dimly lit areas.

The meter features 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.

Physical Features

ProtEX-Lite Enclosures

Great for Cold Temperatures

The ProtEX-Lite PD663 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 ProtEX-Lite 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.

PDA6631-SS 1.5" U-Bolt Kit

PDA6863-SS 2" Pipe Mounting Kit

Easy Pipe Mounting

The ProtEX-Lite comes with cast-in mounting flanges. These allow easy mounting to walls or pipes us-ing the PDA6631-SS Stainless Steel U-Bolt Kit for a 1.5” pipe or the PDA6863-SS Stainless Steel Pipe Mounting Kit for a 2” pipe. A slot on the back of the enclosure makes it easy to center the unit on a pipe.

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 inserting 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.

Programming

The PD663 comes calibrated and scaled at the factory to display a 4.00 to 20.00 mA signal on startup. To change the scaling, follow along using the 4 button interface.

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 nonvolatile 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	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.
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	Aluminum Models: 2.45 lbs (40 oz, 1.13 kg) Stainless Steel Models: 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 Loop Powered 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	AL Models: ASTM A413 LM6 die-cast aluminum, copper-free, enamel coated SS Models: ASTM A743 CF8M investment-cast 316 stainless steel
Gasket (O-Ring)	Fluoroelastomer
Rating	NEMA 4X, IP68 Explosion-proof
Color	Aluminum Models: Blue Stainless Steel Models: Silver
Window	Borosilicate glass
Conduits	PD663-0K0-00: Two 1/2" NPT PD663-0K0-00-M20: Two M20
Flange	Built-in flange for wall and pipe mounting.
Tamper-Proof Seal	Cover may be secured with tamper-proof seal.

Product Ratings and Approvals

UL	Explosion-Proof for use in: For Class I, Division 1, Groups B, C, D Class II, Division 1, Groups E, F, G Class III, Division 1; T6 Class I, Zone 1, AEx db IIC T6 Gb Zone 21, AEx tb IIIC T85°C Db Tamb = -55°C to 75°C UL Type 4X, IP66 / IP68 UL File Number: E494837
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: CSA 11 2325749
ATEX	Explosion-Proof for use in: II 2 G D Ex db IIC T6 Gb Ex tb IIIC T85°C Db IP68 Ta = -55 to 75°C Certificate Number: Sira 10ATEX1116X
IECEx	Explosion-Proof for use in: Ex db IIC T6 Gb Ex tb IIIC T85°C Db IP68 Ta = -55 to 75°C Certificate Number: IECEx SIR 10.0056X

Dimensions

Front View

Side View

Top View

Connections

Connectors Labeling

Wiring Diagrams

For existing applications, one of the great benefits of loop-powered meters is that they get their power directly from the 4-20 mA loop and thus require no additional wiring. All a user has to do is break the existing loop and wire in the meter.

4-20 mA Input Connection with Backlight

4-20 mA Input Connection without Backlight

Choose Your Options

Type A	Type B	Type C	Type D	Type E	Type F	Type G	Type H

PD690	PD542 PD543	PD603 PD644 PD743 PD765 PD6602 PD6603 PD6604 PD6606 PD6607 PD6608 PD6622 PD6624 PD6626 PD6628	PD138 PD154 PD158 PD520	PD6000 PD6001 PD6060 PD6080 PD6081 PD6088 PD6089 PD6100 PD6200 PD6210 PD6262 PD6300 PD6310 PD6363 PD6400 PD7000	PD530	PD510	PD420

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