Dwyer Instruments ISDP series Istruzioni per l'installazione e il funzionamento

Bulletin A-25

Series ISDP Intrinsically Safe Differential Pressure Transmitter

Specifications - Installation and Operating Instructions

DWYER INSTRU ENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • ICHIGAN CITY, IN 46360, U.S.A. Fax: 219/872-9057 e-mail: [email protected]

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25/32

[21.18]

1-15/16

[48.97]

1-5/16

[33]

1-17/32

[38.61] 45/64

[17.78]

5-7/32

[132.54]

4-23/32

[120]

3-7/16

[87.12] BRACKETS

ARE OPTIONAL

4X ø3/16 [4.76] CLEARANCE

HOLES FOR MOUNTING

3-17/64

[83]

MOUNTING HOLE

PATTERN

4-1/8

[105]

1-5/32

[29.59]

#8-36 SLOTTED MACHINE SCREW

#8 LOCK

WASHER

BRACKET ASSEMBLY

1-45/64

[43.18]

2-31/32

[75.39]

4-23/32

[120]

4-9/64

[105.17]

DI ENSIONS

OPTIONAL A-438 BRACKET

OUNTING DIAGRA

Shown with Optional A-438 ounting Bracket

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SPECIFICATIONS

Service: Air and non-corrosive gases.

Wetted aterials: Ranges 5˝ and greater: glass, PVC, silicon, alumina ceramic, epoxy,

RTV, gold, aluminum, stainless steel and nickel; Ranges 1˝ and lower: stainless steel,

silicone, gold and ceramic.

Housing aterials: Aluminum, glass.

Accuracy: ±0.5% at 77°F (25°C) including hysteresis and repeatability (after 1 hour

warm-up).

Stability: < ±1% per year.

Pressure Limits: Ranges ≤ 2.5 in. w.c. = 2 psi;

5˝: 5 psi; 10˝: 5 psi; 25˝: 5 psi; 50˝: 5 psi; 100˝: 9 psi.

Temperature Limits: 32 to 161.6°F (0 to 72°C).

Compensated Temperature Limits: 32 to 140°F (0 to 60°C).

Thermal Effects: 0.020%/°F (0.036/°C) from 77°F (25°C).

Power Requirements: 10-35 VDC.

Output Signal: 4-20 mA DC.

Zero & Span Adjustments: Accessible via menus.

Response Time: 250 ms (dampening set to 1).

Display: 4 digit LCD 0.6˝ height.

Electrical Connections: M12 4 P N Connector.

Process Connections: 1/8 female NPT.

Enclosure Rating: Designed to meet NEMA 4x ( P66).

ounting Orientation: Mount unit in horizontal plane.

Size: 4.73˝ x 4.73˝ x 3.43˝ (120 mm x 120 mm x 87.1 mm).

Weight: 2 lb 10 oz (1.19 kg).

Agency Approvals: FM Approved: S / , , / 1 / ABCDEFG / T4 Ta = 0°C to 72° - 19-

443480-50; ENT TY; TYPE 4X (US AND CANADA) / 0 AEx ia / C / T4 Ta = 0°C to 72°

- 19-443480-50; ENT TY; TYPE 4X (US) / 0 / Ex ia / C / T4 Ta = 0°C to 72° - 19-

443480-50; ENT TY; TYPE 4X (CANADA) CE. CENELEC EN 61326/55024: 2003; EC

61000-4-2/3/4/6: 2001/2006/2004/2005; CENELEC EN 55011: 2006; 2004/108/EC EMC

Directive.

Intrinsic Safety Information

Entity Parameters

Ui = 28VDC

i = 93mA

Ci = 22 nF

Li = 400 uH

Pi = 651mW

Notes:

1. Remove power from the instrument before carrying out any servicing.

2. Use only FM approved Associated Apparatus.

3. The earth terminal on the housing must be wired to a local earth ground in the

hazardous area.

4. Refer to control drawing 19-443480-50, Page 15, for installation requirements.

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MAXIMUM VALUE (1250Ω)

OPERATING 

REGION

R LMAX= Vps-10.0

20mA DC

VDC

05101315

20 25 30 35

TOT

AL RECEIVER RESISTANCE (Ω)

1500

1400

1300

1200

1100

1000

900

800

700

600

500

400

300

200

100

ISDP

TRANSMITTER

RECEIVER

POWER

SUPPLY

10-35 VDC

-------2-Wire Operation- An external power supply delivering 10 - 35 VDC with minimum

current capability of 40 mA DC (per transmitter) must be used to power the control loop.

See Fig. C for connection of the power supply, transmitter, and receiver. The range of the

appropriate receiver load resistance (RL) for the DC power supply voltage available is

expressed by the formula and graph in Fig. D.

POWER SUPPLY VOLTAGE - VDC (2-WIRE CONNECTION)

A-231 M-12 Cable Colors

P N 1 is Brown (positive)

P N 3 is Blue (negative)

Use Model A-231 shielded cable with 4 pin Female M-12 connection.

-12 Connector

2-WIRE CONNECTION

Fig. C

Fig. D

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MENUMENU

HO E POSITION

FUNCTION

Allows access to

the menus

Displays full scale

range of unit

AIN ENU

FUNCTION

Return to home

position

Sequences through menus

Enter into SUB MENU

SUB ENU

FUNCTION

Return to previous menu

ncrements a value

Decrements a value

Changes a value or

setting. Press ENTER and

display will blink. Adjust

with UP or DOWN arrows.

Press ENTER to store.

Display will stop blinking.

Peak/Valley SUB MENU

resets display to present

value.

ARROW

DOWN

ARROW

ENTER

KEY FUNCTIONS

INSTALLATION

Mount the instrument in a location that will not be subject to excessive temperature, shock

or vibration.

Pressure Connections

Use 1/8˝ male NPT fittings. When tightening fittings, grasp the brass fitting on the SDP

with a 1/2˝ wrench to prevent the fitting on the SDP from turning.

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MENU MAPMENU MAP

CONTINUED

SETTINGSSETTINGS

MAIN MENUS SUB MENUS

MENUS

UNAVAILABLE

FOR

BI-DIRECTIONAL

RANGES AND

RANGES ABOVE

25 IN. W.C.

MENUMENU

ENU AP

MA N MENUS SUB MENUS SETT NGS

CONT NUED

MENUS

UNAVA LABLE

FOR

B -D RECT ONAL

RANGES AND

RANGES ABOVE

25 N. W.C.

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CONTINUEDCONTINUED

MENUMENU

CONT NUED

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MAIN MENUS SUB MENUS SETTINGS

Menus present only

in pressure operation

MENUMENU

MA N MENUS SUB MENUS SETT NGS

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ain enu Selections (Upper Right Display Reads

)

SECr

Security - Lock out access to menus and settings.

OPEr

Operation - Selection of Pressure, Velocity or Flow and corresponding

engineering units.

Display - Monitor and adjust display related settings: Peak, Valley, display

resolution, % output and dampening.

AdU

Advanced functions - Modify advanced function parameters, transmitter

output scaling, and calibration.

odel Chart

odel

SDP-002

SDP-004

SDP-005

SDP-006

SDP-007

DSP-008

SDP-009

SDP-010

SDP-011

SDP-012

SDP-013

SDP-014

SDP-015

SDP-016

SDP-017

Range

0-0.25˝

0-1˝ WC

0-2.5˝ WC

0-5˝ WC

0-10˝ WC

0-25˝ WC

0-50˝ WC

0-100˝ WC

-0.1/+0.1˝ WC

-0.25/+0.25˝ WC

-0.5/+0.5˝ WC

-1.0/+1.0˝ WC

-2.5/+2.5˝ WC

-5.0/+5.0˝ WC

-10/+10˝ WC

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AIN ENUS and SUB ENUS

SECr

(Security) AIN ENU

SECr

is the only SUB MENU in the security MENU. When the security SUB MENU

is selected, the present security level is displayed in the upper right hand display. To

change the security level, adjust the number displayed to the number shown in the

following table for the desired security level.

The password values shown in the table cannot be altered, so retain a copy

of these pages for future reference.

OPEr

(Operation) AIN ENU

The

OPEr

MENU selects the measurement type of the instrument.

The SUB MENUS are:

PrES

- Pressure

KFAC

- K Factor

XDIM

- X Dimension

UEL

- Velocity

ArEA

- Area

YDIM

- Y Dimension

FLO

- Flow

DIA

- Diameter

f the instrument is set for Velocity, the

OPEr

MENU will have an additional

KFAC

SUB

MENU. f the instrument is set for Flow, the

OPEr

MENU will have additional

KFAC

and

ArEA

SUB MENUS. These will be discussed under Velocity and Flow. When scrolling

through the

OPEr

SUB MENUS, the measurement type the unit is currently set for will

show the units in the upper right display. The other measurement types will have a blank

upper right display.

Security Level

Displayed

Access

All menus access

All settings locked

Password Value

to Enter

Units visible, so unit

is presently set to

measure pressure

is presently set to

measure pressure

Units not visibleUnits not visible Units not visibleUnits not visible

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