PRECISION DIGITAL PD677 Manuel utilisateur

4½ DIGIT LOOP-POWERED METERS

Precision Digital corPoration

www.predig.com

Model PD675 NEMA 4X

Model PD677 Explosion-Proof

PD675

•4½ Digit 0.7" (17.8 mm) LCD, 19999

•FM Approved & CSA Certified

•Impact-resistant polycarbonate body

•Operates from -20 to 65°C

•Easy to Calibrate

PD677

•4½ Digit 0.7" (17.8 mm) LCD, 19999

•PD677-N-EX is FM Approved & CSA Certified

•Ex-proof, cast aluminum with glass window

•Operates from -20 to 65°C

•Easy to Calibrate

4½ DIGIT LOOP-POWERED METERS

WARNING: If any of the following operations are performed in

hazardous areas, all appropriate hazardous area procedures must

be followed.

WARNING: Disconnect from supply before opening.

Keep cover tight while circuits are alive. Conduit seals must be

installed within 18″ of the enclosure (PD677).

AVERTISSEMENT: Ouvrir le circuit avant D’enlevel le couvercle

garder le couvercle bien fermé tant que les circuits sont sous

tension. Un scellement doit êntre installe à moins de 450 mm du

boîtier (PD677).

WARNING: Calibration of the Loop-Powered Display should be

performed in a non-hazardous area prior to installing it in its

enclosure.

CAUTION: Care should be taken to avoid static electricity damaging

the electronic circuitry.

SETUP

The only tools needed for calibration are a calibrated current source, a flat

head screwdriver & a phillips head screwdriver. Please note that the meter

must be disassembled in order to perform the setup functions.

Disassembly

The calibration controls are located behind the display faceplate. To

access these controls, you must first remove the enclosure cover and

faceplate by doing the following:

PD675: Loosen the four screws on the enclosure cover and remove.

Unscrew the two fasteners that hold the faceplate, then remove.

PD677: Turn the enclosure cover counterclockwise to remove. Unscrew

the two fasteners that hold the faceplate, then remove.

Display Faceplate

Display Board

Signal

Input Board

Pollution Degree 2

Installation Category II

Figure 1. PD677 Assembly

Note: When reassembling boards DO NOT over-tighten screws.

Connections

Field connections are made to the screw terminals located on the Signal

Input Board. To access these screw terminals it is necessary to remove

the Display Board from the Signal Input Board. First, disconnect the

ribbon cable connector from the Display Board. Next, remove the two

screws located to the left and right of the LCD that hold the Display

Board in place. Finally, remove the Display Board carefully to avoid

contact with any rough surfaces.

Input

4-20 mA

Transmitter Loop Power

Supply

n

Figure 2. Signal Input Connections

Calibration Controls

Calibration of these meters is a two-step process involving four controls.

These controls are located on the Display Board. The LO controls are on

the right and the HI controls on the left. The pre-configured jumper array

JP2 and JP3 are also located on the Display Board.

Calibration Procedure

Connect the 4-20 mA input signal. Apply 4 mA to the input and adjust

the coarse and fine LO controls for the desired reading. Next apply a

signal between 16 and 20 mA and adjust the coarse and fine HI controls

for the desired reading. Complete the calibration by making any minor

adjustments to the LO and HI displays.

Jumper Positions

JP2 JP3

JP1

Cable

1999.9

F-HI-C C-LO-FR24

Figure 3. Display Board

Balance Potentiometer (R24) is preset at the factory

Decimal Point Selection

Decimal point selection is accomplished using JP1 located behind the

faceplate to the right of the display. Leave jumper on one pin only for a

display of 19999 (default), place the jumper over both pins of #1 for a

display of 1999.9, #2 for 199.99, #3 for 19.999, #4 for 1.9999

JP1

4½ DIGIT LOOP-POWERED METERS

MOUNTING KIT OPTIONS

PD675 Panel Mount

PDA6844 Panel Mounting Kit

PD675 & PD677 Pipe Mount

PDA6845 Pipe Mounting Kit

8.20 (208)

Units: Inch (mm)

Mounting Plate Hole Pattern

DIMENSIONS Units: Inch (mm)

PD675

Wall

Mounting

Holes

Beneath

Cover

Screws

A: 3.15 (80) E: 2.56 (65)

B: 5.51 (140) F: 0.79 (20)

C: 2.36 (60)

D: 4.72 (120)

PD677

0.31

(7.9)

Dia.

A: 5.44 (138) C: 5.63 (143)

B: 4.06 (103) D: 5.63 (143)

MOUNTING PLATE

PANEL

METER

BRACKET

WASHERS

SELF

TAPPING

SCREW

4½ DIGIT LOOP-POWERED METERS

www.predig.com

Precision Digital corPoration

19 Strathmore Road • Natick MA • 01760 • USA • Tel: (800) 343-1001 • Fax: (508) 655-8990

LIM673-678_E 01/07

ORDERING INFORMATION

Model Description

PD675-N NEMA 4X Loop-Powered Meter

PD677-N Explosion-Proof Loop-Powered Meter

PD677-N-EX FM Approved & CSA Certified Exp-Proof Meter

Accessories

PDA6844 Panel Mounting Kit for PD675

(PDA6844 does not provide NEMA 4X seal to the panel)

PDA6845 2" Pipe Mounting Kit for PD675, PD677

PDA6845-SS 2" Pipe Mounting Kit SS for PD675, PD677

PDA-SSTAG Stainless Steel Tag

SERVICES ORDERING INFORMATION

Calibration

PDN-CAL Calibration with Certificate

PDN-CALDATA Calibration with Certificate & Data

PDN-LTCAL LifetimeAnnual Recertification (shippedbacksameday)

PDN-LTCAL2 Lifetime Annual Recertification (shippedbacknextday)

PDN-LTCAL5 LifetimeAnnual Recertification (shippedbackwithin5days)

PDN-ONEDAYRTN One-Day Turnaround Service

Certificate of Conformance

PDN-CERTCON Certificate of Conformance

Extended Warranty

PDN-EXTWRNTY1-0 1 Year with a list price between: $0-$299

PDN-EXTWRNTY1-1 1 Year with a list price between: $300-$599

PDN-EXTWRNTY2-0 2 Years with a list price between: $0-$299

PDN-EXTWRNTY2-1 2 Years with a list price between: $300-$599

SPECIFICATIONS

Except where noted all specifications apply to operation at +25°C.

General

Input: 4-20 mA @ 24 VDC maximum

Accuracy: ±0.05% FS ±2 counts

Decimal Point: User selectable

Calibration Range: 4 mA input: -5000 to +5000;

20 mA input: between 200 and 20000 above 4 mA input

Maximum Voltage Drop: 5.2 VDC @ 20 mA

Display Update Rate: 2.5/second

Operating Temperature: -20 to 65°C

Storage Temperature: -40 to 80°C

Relative Humidity: 0 to 90% non-condensing

Connections: Removable screw terminals accept 12 to 22 AWG

Warranty: 2 years parts & labor

Extended Warranty: 1 or 2 years, refer to Price List for details.

PD675

Display: 0.7" (17.8 mm) LCD, 4½ digits; 19999

Approvals: FM Approved & CSA Certified as non-incendive for

Class I, Division 2, Groups A, B, C, & D; suitable for Class II,

Division 2, Groups F & G; suitable for Class III, Division 2, indoor

and outdoor, hazardous (classified) NEMA 4X locations.

Enclosure: Impact-resistant polycarbonate body, color: gray; clear

polycarbonate cover; NEMA 4X, IP67. ½" conduit hole provided at base.

Weight: 12 oz (340 g)

PD677

Display: 0.7" (17.8 mm) LCD, 4½ digits; 19999

Approvals: The PD677-N-EX is FM Approved & CSA Certified

as explosion-proof for Class I, Division 1, Groups B, C, & D; dust-

ignition proof for Class II, Division 1, Groups E, F, & G, Class III

hazardous (classified) locations.

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.

Weight: 5.7 lb (2.6 kg)

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.

YOUR LOCAL DISTRIBUTOR IS:

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