Omega DPF76, DPF75, DPF78 User Manual

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Omega DPF76, DPF75, DPF78 User Manual

User’sGuide

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www.omega.com e-mail: info@omega.com

DPF75, DPF76 AND DPF78 SERIES

Rate/Totalizer

M1090 /071603

 

 

OMEGAnet® Online Service

 

Internet e-mail

 

 

 

www.omega.com

 

info@omega.com

 

 

 

 

 

 

 

 

Servicing North America:

USA:

One Omega Drive, P.O. Box 4047

 

ISO 9001 Certified

Stamford CT 06907-0047

 

 

 

 

TEL: (203) 359-1660

FAX: (203) 359-7700

 

 

 

e-mail: info@omega.com

 

Canada:

976 Bergar

 

 

 

 

Laval (Quebec) H7L 5A1

 

 

 

 

TEL: (514) 856-6928

FAX: (514) 856-6886

 

 

 

e-mail: info@omega.ca

 

For immediate technical or application assistance:

USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA® Customer Service: 1-800-622-2378 / 1-800-622-BEST® Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN® TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA

Mexico:

En Espan˜ol: (001) 203-359-7803

e-mail: espanol@omega.com

 

FAX: (001) 203-359-7807

info@omega.com.mx

Servicing Europe:

Benelux:

Postbus 8034, 1180 LA Amstelveen, The Netherlands

 

TEL: +31 (0)20 3472121

FAX: +31 (0)20 6434643

 

Toll Free in Benelux: 0800 0993344

 

 

e-mail: sales@omegaeng.nl

 

Czech Republic:

France:

Rudé armády 1868, 733 01 Karviná 8

 

TEL: +420 (0)69 6311899

FAX: +420 (0)69 6311114

Toll Free: 0800-1-66342

e-mail: czech@omega.com

9, rue Denis Papin, 78190 Trappes

 

TEL: +33 (0)130 621 400

FAX: +33 (0)130 699 120

Toll Free in France: 0800-4-06342

 

e-mail: sales@omega.fr

 

Germany/Austria:

Daimlerstrasse 26, D-75392 Deckenpfronn, Germany

 

 

 

TEL: +49 (0)7056 9398-0

FAX: +49 (0)7056 9398-29

 

 

 

Toll Free in Germany: 0800 639 7678

 

 

 

 

e-mail: info@omega.dl

 

United Kingdom:

One Omega Drive, River Bend Technology Centre

ISO 9002 Certified

Northbank, Irlam, Manchester

 

 

 

 

M44 5BD United Kingdom

 

 

 

 

TEL: +44 (0)161 777 6611

FAX: +44 (0)161 777 6622

 

 

 

Toll Free in United Kingdom: 0800-488-488

 

 

 

e-mail: sales@omega.co.uk

 

It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification.

The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice.

WARNING: These products are not designed for use in, and should not be used for, patient-connected applications.

TABLE OF CONTENTS

 

QUICK SET-UP GUIDE .....................................................................................................

ii

SPECIFICATIONS .............................................................................................................

1

HOW TO MOUNT THE UNIT .............................................................................................

2

WIRING ..............................................................................................................................

3

UP/DOWN CONTROL AND QUADRATURE INPUTS ......................................................

3

CONNECTING AC/DC POWER ........................................................................................

4

WIRING CONSIDERATIONS ............................................................................................

4

TYPICAL SENSOR HOOKUP ...........................................................................................

4

TYPICAL QUADRATURE HOOKUP .................................................................................

4

WHAT CAN YOU VIEW .....................................................................................................

5

OUTPUT JUMPER SELECTIONS .....................................................................................

5

MILLIVOLT INPUT OPTION JUMPER SELECTIONS .......................................................

5

OPERATING FRONT PANEL ............................................................................................

6

PROGRAMMING FLOW CHART ......................................................................................

6

PROGRAM CODES & DESCRIPTIONS ...........................................................................

7

TERMINATIONS ................................................................................................................

8

CALCULATING SCALE FACTORS ...................................................................................

9

PROGRAMMING PROCEDURE .....................................................................................

10

SETTING SCALING FACTORS .......................................................................................

10

SETTING THE COUNTER ...............................................................................................

11

SETTING THE RATE .......................................................................................................

12

SETTING THE LOCK CODE & LOCKING THE UNIT .....................................................

13

SETTING THE RELAYS & PRESETS .............................................................................

14

OUTPUT WIRING ............................................................................................................

15

ANALOG OUTPUT OPTION ............................................................................................

16

RS232/RS422 SERIAL COMMUNICATIONS ..................................................................

17

RS232/RS422 WIRING ....................................................................................................

19

TROUBLESHOOTING GUIDE .........................................................................................

20

UNPACKING

Remove the Packing List and verify that you have received all equipment. If you have any questions about the shipment, please call OMEGA Customer Service Department at 1-800-622-2378 or (203) 359-1660.

When you receive the shipment, inspect the container and equipment for any signs of damage. Note any evidence of rough handling in transit. Immediately report any damage to the shipping agent.

NOTE

The carrier will not honor any claims unless all shipping material is saved for their examination. After examining and removing contents, save packing material and carton in the event reshipment is necessary.

i

QUICK SET-UP GUIDE

1)Determine what function the panel meter is to perform, e.g., rate display with alarm, batch control, totalizer, etc.

2)Ensure compatibility with sensor. The DPF70 panel meters require a pulse (or contact closure) input. The pulse must exceed 3 VDC and drop below 1 VDC. If necessary, as in the case of paddle wheel, turbine meter or other types of inductive pick-up sensors, a signal conditioner or pulse amplifier (such as FLSC-AMP) can be used.

3)The wiring is explained on pages 3 and 4. The 12 VDC output can be used to power the FLSC-AMP. For the DPF75, a single input at pin 5 can be jumpered to pin 6: input B will be the grand total.

4)The relay function can be altered by cutting and/or soldering jumper traces as shown on page 5.

5)There are two main operating modes: RUN, PROGRAM. (See page 6 for a summary). In the RUN mode, the view key allows you to toggle the display for rate, batch and grand total. The

PRE A, PRE B keys allow you to see and set the relay trigger points. The lock key allows you to lock and unlock the keypad functions by entering the lock-out code.

The PROGRAM mode must be accessed to set up the function of the display. In this mode, the RST key enters the displayed value into memory. The PRGM key toggles the selections and the arrow keys bump that digit up to the next value or change the decimal point location.

PROGRAMMING EXAMPLE

For this example, let's assume you have an FP-5300 paddle wheel sensor, an FP-5310 1" fitting, the

FLSC-AMP pulse amplifier and DPF75. You want to see flow rate (GPM) batch and grand total. The signal K-factor is 183.66 pulses/gallon, (from the manual for the FP-5300 flow sensor). Here are the programming steps you will see, starting on page 1.

FACTOR STEP 1: DPF75, DPF76, & DPF78

A,)

Set the decimal point for "dPFA" to allow two decimal places using the UP arrow key.

B.)

Enter the K-factor next: 183.66, using the arrow keys.

C.)

Do the same for "dPFB" (DPF75 only).

D,)

Choose "HI CPS", as the input will exceed 40 Hz (DPF78 only).

ii

COUNTER STEP 2: DPF75, DPF76:

A,)

Reset to zero "rST 0" will allow us to count up. "SET Pr" counts down from the preset value.

B.)

To read the total in whole gallons, set the decimal point to the far right.

C.)

Since you do not want to sum or take the difference of two inputs, choose "A SEP B" (DPF75

 

only).

D.)

The frequency will exceed 40 Hz, so you will need to select "HI CPS". "LO CPS" provides

 

debounce filtering for contact closures.

RATE STEP 3: DPF75, DPF78

A.)

Select "SCALE" to engage the K-factor.

B.)

Select "=60".

C.)

Normalize at 1.5 seconds.

D.)

Set 4 significant figures.

E.)

Set 02 sec delay.

LOCK STEP 4: DPF75, DPF76 & DPF78

Before you finish this step, write down your personal lock-out code and store it in a safe place. Here is where you select and enter the code and what will be locked. To lock the meter you must wait until you are in the RUN mode. Press the "LOCK" key, use the arrows to display your code, then Enter.

Repeat to unlock.

RELAYS STEP 5: DPF75

The DPF76 relays can only trigger on batch or total. The DPF78 relays can only trigger on rate. The DPF75 relays can be programmed to trigger on rate or total. The relay setpoints for rate or total for all versions with relays are set with the PRE A and PRE B buttons. When the relays are set for nonlatching, the batch total will automatically reset at the batch preset. The programming is now complete. Here is what you will see with 100 Hz input frequency (equal to 32.66 GPM flow rate). The rate is: "r 32.66". The batch will continuously increase: ("480"); the grand total will also continuously increase ("...4.8.0"). Notice that the decimals points for the grand total are inverted - all are lit except where the decimal point is actually located.

To read total gallons to a tenth of a gallon: in Step 2, change the dPLoC to allow one decimal place "XXX.X" for the counter. But this will cause a shift in the rate display so you will also need to shift the

K-factor in Step 1. Change the K-factor to 18.366 to read the correct units. Now the 100 Hz signal will yield "r 32.66", "480.0", ". . 4.8.00.".

iii

DESCRIPTION & SPECIFICATIONS

DESCRIPTION:

The OMEGA DPF70 is a dual input (channel A and B) counter/ ratemeter, each with its own 5 digit dividing scale factor. The two 5 AMP preset relay outputs can be programmed by the user to apply to the "A" total counter, the "A" ratemeter, or the "B" counter or the net total of A and B inputs. The user can view the Net Total of "A+B", the Net Total of "A-B", the rate of A, or A and B counters separately. The "DPF75" version shows rate and total (as described above). The "DPF76" is exclusively a counter and the "DPF78" is exclusively a ratemeter.

SPECIFICATIONS: DISPLAY

6 digit, 0.55" High LED

INPUT POWER:

110 VAC ± 15% or 11 to 15 VDC

220 VAC ± 15% or 11 to 15 VDC

CURRENT:

250 mA DC max. or 6.5 VA AC

OUTPUT POWER (AC powered units only) +12 VDC @ 50 mA, unregulated -10 + 50%

TEMPERATURE:

Operating: +32°F (0°C) to +130 F (+54°C) Storage: -40 F (-40°C) to +200°F (93°C) DIMENSIONS: See next page.

WEIGHT:

2 Lbs. (1 kg)

MEMORY

EEPROM stores data for 10 years if power is lost.

INPUTS:

3:High Impedance DC pulse input Open or 0-1 VDC

(low), 4-30 VDC (high), 10 KOhm imp. 10 KHz max. speed. Accepts simultaneous inputs.

3M: Mag. Input, Input A only, accepts 30mV input (50 V max. P/P) signals 10 KOhm imp. 5 KHz max. (Input B, 4-30V)

3MB: Mag. Input, Inputs A & B, accepts 30mV input (50 V max. P/P) signals 10 KOhm imp. 5 KHz max.

5:4-30 V Count pulses on Input A, 4-30 V Direction

Control input (level) on Input B.

5M: 30 mV Count pulses on Input A (50 V max. P/P) 4-30 V Direction Control input (level) on Input B

9:Quadrature, accepts 4-30 V pulses with 90°phase shift for direction detection.

9MB: Quadrature, accepts 30 mV (50 V max. P/P) pulses with 90°phase shift for direction detection.

NOTE: The Mag. inputs have filtering as follows: up to 300hz @30mV, 5KHz @ .25V to 50V max.

RESET:

Front Panel:

Resets displayed value and control output Remote:

4-30 VDC negative edge resets COUNTER "A" and control output

K FACTOR/SCALING

In the standard unit a fixed K-Factor is used to convert the input pulses to engineering units. The 5 digit K-Factor dividers, with decimal keyed into any position, allow easy direct entry of any K- Factor from 0.0001 to 99999. Separate factors may be entered for the 2 separate input channels.

CONTROL OUTPUTS:

Relays:

2 each N.O. Relay; 5 Amps120/240 VAC or 28 VDC. (N.C. relay contacts and NPN transistor output available with solder jumpers. Transistor output is internally pulled up to 10 VDC through relay coil, sinks from 10 VDC to .5 V @ 100 mA)

Analog Output:

An optional 4-20mA (0-20mA) output is available for the DPF70 series. The output can be programmed to track rate or total. This feature is available by adding suffix A to the part number. Connections are via a 2 terminal pluggable screw connector.

Programming is accomplished by using the front panel in conjunction with rear dip switches.

Accuracy: 50uA worst case.

Compliance Voltage: 3 to 30 VDC non inductive.

RS232/RS422SERIAL INTERFACE

If the serial interface option is supplied, up to 99 units can be linked together. (The terminal addressing the unit must be capable of driving all loads in the loop.) Unit status and new set points can be communicated by serial communication. Mode changes, however, must always be made on the front panel. Data is transmitted at selected baud rates using standard seven bit ASCII characters and parity with two additional bits of “Start” and “Stop” to make up the standard ten bit character.

Data is received and transmitted over standard EIA RS232 or RS422 levels. Each 10 bit character is made up of a start bit, 7 bit ASCII code, parity bit and stop bit. Unit number, baud rate and parity are entered in the “Program Setting” set up mode and remain in memory even if power is off.

Note that the input impedance of RS232 is 3K or 7K Ohm worst case. The terminal addressing the unit must be capable of driving all loads in the loop. RS422 input impedance is much higher and there is usually no problem driving 25 units. Unit serial transmit line remains in a high impedance “OFF” state until addressed.

PRESETS

Two control outputs are provided. To set relay values, press “menu” button until “Relay” appears on the display, the A and B outputs can be assigned to the ratemeter (high/low), one preset for rate and one for total, or two presets (2 stage shut off) on the A and B counters. A 5 digit value can be entered for both presets and the decimal point location is the same as the counter. The outputs can be set to energize from 0.1 to 99.9 seconds or latch (0.0). If a value other than 0.0 is entered, the counters will auto reset at the preset . In the A-B or A+B versions, the relays will be assigned to either net total or A rate.

LOCKOUT

Unauthorized front panel changes can be prevented by entering a user selected 5 digit code, in the “LOC” , . mode. The front panel can be completely locked out or the presets can remain accessible.

RATEMETER

Accurate to 4 1/2 digits (±1 display digit). The rate meter can be programmed to accept almost any number of pulses per unit of measurement, sample from 2 to 24 seconds maximum, and autorange up to 5 digits of significant information. In the “RPS” mode, the ratemeter displays in units per second, and in the “scale” mode, units per hour or per minute. The unit will display the rate of the A Input only.

COUNTER

The two 6-digit counters can count at 10Khz speed. Each can have a 5-digit dividing scale factor. The counter advances on the positive edge of each pulse. Count up or down modes available, as are quadrature inputs from encoders for position or length measurement. The unit can be programmed to view the net value of "A+B" or "A-B", or A and B as separate counters.

1

HOW TO MOUNT THE UNIT

The unit is designed to be mounted with a gasket providing a water tight seal. Two mounting brackets are provided to secure the unit to the panel. A panel less than .1" may distort if the clamps are screwed too tightly.

Slide the body of the unit through the rubber gasket. Insert the unit into the panel. As shown in "FIG. A", slide the brackets up the groove to press against the back of the panel. Insert screws into rear of brackets and tighten them evenly and alternately. Do not over tighten! A normal level of torque is required. Maximum torque should be 3" pounds.

This product is designed to be panel mounted and is NEMA 4 rated if proper mounting procedures are followed and the required and supplied hardware is correctly used.

If the panel in which the unit is mounted is less than .125 of an inch thick, the possibility exists that there will be some flexing. Should this flexing occur, the resulting deformation of the panel could cause a loss of the water tight seal. In case this should occur, the use of silicone or other sealant would be recommended.

This product is designed to the NEMA 4 rated. However, the fact that we are unable to control either the location in which the device is installed or the actual installation itself requires that the company's liability shall extend only to the repair or replacement of a defective product.

We are prepared to offer additional assistance in those special situations where normal mounting methods do not seem to satisfy the customers needs. This assistance may be obtained by calling the factory and asking for Application Engineering.

FIG. A

DIMENSIONS

3.925

 

4.245

(99.7)

 

4.437

0.587

(107.8)

(112.7)

(14.91)

3.622

 

 

 

 

(92)

 

2.625

1.772

 

(66.68)

 

(45)

 

 

 

 

CUSTOMER PANEL

 

BEZEL

Panel Thickness 0.062" (1.5)

 

GASKET

to 0.187" (4.7) max.

Dimensions in inches (mm)

2

WIRING

The rear terminal contains 12 screw terminals for connecting #14 to #28 gauge wire.

The unit is controlled by a microprocessor and, therefore, an electrically "noisy" environment could cause operating problems. The input power line should not be common to power lines for motors, pumps, contactors, etc.

The unit is designed to be immune from line or RF voltage interference. In some environments voltage spikes of over 100 volts, even 1000 volts, can occur. When common to a power line driving motors voltage fluctuations can be extreme and rapid. Lines driving DC or AC solenoids, relays, or actuators can also cause problems.

Four sources of noise can occur:

1)AC power line noise - If the unit cannot be connected to a clean power source, an inductive load suppressing device (MOV as GE # V130LA1 or Resistor Capacitor as Paktron # .2 uf/220 ohm @ 400V) can be installed. Although locating the suppressor across the AC supply at the unit should help, best results are obtained by connecting the suppressor across the leads of the "load" at the device causing the spike.

2)Input line noise -The noise is carried on the input and D.C. ground lines. Make sure the input wires are never run into the unit in a bundle with power input lines. Also, keep these input lines isolated from inductive lines from devices drawing heavy loads. If there is a possibility of electrical noise, we recommend using shielded cable, with the shield being hooked to the D.C. ground terminal on the instrument, and to "earth" at one point in the circuit, preferably at the D.C. ground terminal of the unit.

3)Output lines - The unit has two relay outputs. When these outputs are used to run external relays or solenoids, spikes can be generated upon activation. This noise can spread through the instrument causing operating problems. If the source is a D.C. operated device, a general purpose diode (IN4004) placed across the solenoid prevents electrical noise spikes. Connect the cathode (banded side) to the more positive side of the coil. If the source is an A.C. operated device, use a MOV or Resistor Capacitor across the coil.

4)12 VDC output supply - Noise can be generated on the 12 VDC output supply if it is used to drive inductive loads or if the current draw exceeds 50 mA. Insure that all inductive loads have a diode (such as IN4004) across the coil and that the current does not exceed 50 mA.

UP/DOWN CONTROL AND QUADRATURE INPUTS

QUADRATURE INPUT:

When programming the counter section for quadrature input, you must set the unit for A net B and A sub B (see step 2 in programming section). This insures proper operation. The rate can only be viewed in one direction. If the unit is a ratemeter only (DPF78), connect only one of the quadrature channels to Input A (pin 5).

UP/DOWN CONTROL:

When using the up/down control option, Input A (pin 5) is the count input and Input B (pin 6) is the up/down control (direction) input. The counter must be set for A net B and A sub B (see step 2 in programming section).

When the direction input is high (4-30VDC) the count inputs will count up, when the direction input is low (open or less than 1VDC) the count inputs will count down. The direction input must precede the count input by 1 msec when the unit is set for low CPS and 1 usec when set for high CPS.

3

CONNECTING AC / DC POWER

NOTE: Connect power only after other connections are finished. Do not touch the live AC power terminals! The unit has been designed with an isolated AC input. Thus, polarity is not a concern for the AC input. The chassis is plastic, therefore earth ground is not used. For D.C. operation, connect + 12V to pin 7 and - D.C. to pin 8.

WIRING CONSIDERATIONS

Connecting the DPF70 Series to Omega Flowmeters and Amplifiers:

FTB4605 & FTB4607 Water Meters:

DO NOT USE PIN 7 WITH THESE METERS!

Connections:

Customer supplied 1/4 Watt 2000(approximateley) resistor

Green

White

Brown

FTB4605 & FTB4607

Water Meters

1

COMMON

 

 

RELAYS BA

 

13- V+

 

ANALOG OUTPUT

 

 

 

 

 

 

 

 

 

2

N.O.(N.C./NPN)

 

 

 

 

 

14- I SINK

 

 

 

 

 

 

 

 

 

3

COMMON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

N.O.(N.C./NPN)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 A INPUT

 

 

 

 

 

 

 

 

6

B INPUT

 

 

 

 

 

 

 

 

7

11 to 19V @ 50mA OUT/+DC IN

 

 

 

8

-DC (GROUND)

 

 

 

 

 

 

 

 

 

 

 

OFF

ON

 

10 6 to 14V @ 50mA

SWITCH

 

 

213 4

RUN

SET

 

9

RESET INPUT

 

 

 

 

RUN

CAL.

 

 

 

 

 

4-20mA

0-20mA

 

 

 

 

 

 

 

 

 

RATE

COUNT

 

11 A.C. INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

12 A.C. INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FTB600 Series Flow Meters:

DO NOT USE PIN 7 WITH THESE METERS!

Connections:

Brown

Green

White

FTB600

Flow Meters

1

COMMON

 

 

RELAYS BA

 

13- V+

 

ANALOG OUTPUT

 

 

 

 

 

 

 

 

 

2

N.O.(N.C./NPN)

 

 

 

 

 

14- I SINK

 

 

 

 

 

 

 

 

 

3

COMMON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

N.O.(N.C./NPN)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 A INPUT

 

 

 

 

 

 

 

 

6

B INPUT

 

 

 

 

 

 

 

 

7

11 to 19V @ 50mA OUT/+DC IN

 

 

 

8

-DC (GROUND)

 

 

 

 

 

 

 

 

 

 

 

OFF

ON

 

10 6 to 14V @ 50mA

SWITCH

 

 

213 4

RUN

SET

 

9

RESET INPUT

 

 

 

 

RUN

CAL.

 

 

 

 

 

4-20mA

0-20mA

 

 

 

 

 

 

 

 

 

RATE

COUNT

 

11 A.C. INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

12 A.C. INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FLSC-AMP Amplifier:

Connections:

1 3

2 2

3 1

TB1 TB2

FLSC-

AMP

FLSC-AMP

Amplifier

Flowmeter

(Turbine-Mag Pickup)

1

COMMON

 

 

RELAYS BA

 

13- V+

 

ANALOG OUTPUT

 

 

 

 

 

 

 

 

 

2

N.O.(N.C./NPN)

 

 

 

 

 

14- I SINK

 

 

 

 

 

 

 

 

 

3

COMMON

 

 

 

 

 

 

 

 

 

 

4

N.O.(N.C./NPN)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5 A INPUT

 

 

 

 

 

 

 

 

6

B INPUT

 

 

 

 

 

 

 

 

7

11 to 19V @ 50mA OUT/+DC IN

 

 

 

8

-DC (GROUND)

 

 

 

 

 

 

 

 

 

 

 

OFF

ON

 

10 6 to 14V @ 50mA

SWITCH

 

 

213 4

RUN

SET

 

9

RESET INPUT

 

 

 

 

RUN

CAL.

 

 

 

 

 

4-20mA

0-20mA

 

 

 

 

 

 

 

 

 

RATE

COUNT

 

11 A.C. INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

12 A.C. INPUT

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

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