Omega DFC User guide

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SERIESDFC|DIGITAL FLOW CONTROLLER

BENEFITS/FEATURES

• Able to quickly see changes due to fast <20 ms response rate

•Simplesetupusingconguration/calibrationsoftware

• Works for a variety of application with up to 90 different user selectable gases and gas mixes

• Meet application requirements with high accuracy and repeatability

• Minimize downtime with self-diagnostics through status LED or OLED indication

DESCRIPTIONAPPLICATIONS

• Gas ow measurement

• Gas ow control

• Operating pumps and valves

• Process equipment

• Vacuum process

• Scientic and analytical

• Bioreactors and surface depositions

The Series DFC Digital Flow Controller combines a straight tube sensor

with a restrictor ow element to provide accurate readings and control. Simultaneous displays of mass ow, volumetric ow, pressure and temperature parameters promote applications in a variety of industries.

SPECIFICATIONS

Service Clean, non-corrosive gases compatible with wetted parts.

Wetted Materials 316 SS, 416 SS, high temperature polyamide, alumina ceramic, epoxy, silicone, glass, gold. FKM O-rings.

Accuracy ±(0.5% of reading + 0.2% FS).

Repeatability ±0.2% FS.

ResponseTime 150 ms.

Output 0-5 VDC, 4-20 mA and 0-10 VDC.

RelayRating Programmable solid state relay.

Max.ParticulateSize 20 microns.

Temperature Limits 14 to 140°F (-10 to 60°C).

PowerSupply 12-26 VDC.

ProcessConnections 1/8˝ compression tting for ow rates ≤ 10 L/min (-005, -010); 1/4˝ for ≤ 50 L/min (-050); 3/8˝ for ≤ 100 L/min (-100).

PressureLimits 120 psig (8.27 bar).

Leak Integrity 1 x 10

Display 2 x 16 character OLED.

Weight DFC-01/50: 1.40 lbs (0.635 kg); DFC-51/56: 1.66 lbs (0.755 kg).

Agency Approvals CE.

-9

sccs of helium.

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DIMENSIONS

ADDRESS: FF

RS-232 SIGNAL AND GND

[20.32]

1-17/64

[49.89]

Ø0.22 [2] HOLES

[32.26]

D [BOTH SIDES]

1-3/64 [26.67]

17/32

[13.34]

51/64

[20.32]

1/8

17/64

[3.3]

6-32 UNC-2B

Ranges0.5mL/min-20L/min(DFC-01/50) Ranges21L/min-100L/min(DFC-51/56)

1-27/32

[6.73]

Range A B C D

0.5 mL/min-50 mL/min 51 mL/min-20 L/min

3-11/16 [93.47] 3-21/32 [92.96]

4-37/64 [116.33] 4-13/32 [111.76]

11/32 [8.64] 11/32 [8.64]

WIRINGDIAGRAM

10-32 UNF 1/8 NPT

5-7/16 [137.92]

8-32 UNC-2B X 0.30

2-1/2 [63.5]

4-27/32 [123.19]

1-1/4

[31.75]

3/16

[4.57]

1/4-18

NPT

31/64

[12.45]

[32.26]

1-19/32

[40.64]

51/64

DIN connector wiring

PIN Function Note

1 Solid state SPST relay NO

(normally open) contact #1

2 Solid state SPST relay NO

Do not exceed SSR maximum voltage 48 AC peak/DC and maximum load current 400 mA.

(normally open) contact #2

3 Analog set point input (+) (0-5

VDC, 0-10 VDC, 4-20 mA)

4 Analog (0-5 VDC, 0-10 VDC, 4-20

mA) input/output reference (-)

Input impedance: 100K (0-5, 0-10 VDC) 250 Ω (4-20 mA). Common (return) for pins 3 and 6 (0-5 VDC or 0-10 VDC or 4-20 mA).

5 Not assigned. Do not connect! Factory use only. Do not connect any

signals to this pin!

6 Analog (0-5 VDC, 0-10 VDC or

4-20 mA) output (+)

Output. Do not apply external voltage or any current source. Be sure to observe recommended load impedance.

7 Power supply, positive (+) Power input 12-26 VDC. (DFC-01-DFC-53)

or 24-26 VDC (DFC-54-DFC-56).

8 Power supply, common (-) Power input common.

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WIRINGDIAGRAM

ADDRESS: FF

RS-232 SIGNAL AND GND

HOST PC

WITH RS-232 INTERFACE

NOTE: CROSSOVER CONNECTION HAS TO BE ESTABLISHED.

RX [-] TX [+] GND

X X X

X X

SLEEVE GND

RING TX [+]

TIP RX [-]

RS-232wiring(default)

RS-232 SIGNAL GND

RS-232 TX

RS-232 RX

PHONEJACK STEREO

RX [-]

TX [+]

HOST PC WITH

RS-232 INTERFACE

RX [-] TX [+] GND

WHITE

RED

SHIELD

SLEEVE GND

RS-232 RX

RS-232 TX

RS-232

RS-485

PHONEJACK STEREO

TX [+]

RX [-]

NOTES:

1. RS-232 TO RS-485 CONVERTER HAS TO BE CONFIGURED FOR 2 WIRE HALF DUPLEX SYSTEM.

2. UP TO 64 DEVICES ON ONE RS-485 SEGMENT, UP TO 2000 FEET.

GND

T [-]

T [+]

DFC #1 DFC #2 DFC #3 DFC #4 DFC #64

ADDRESS: 11 ADDRESS: 12 ADDRESS: 13 ADDRESS: 14

RING TX [+]

TIP RX [-]

RS-485wiring(displayselectable)

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HOWTOORDER

Use the bold characters from the chart below to construct a product code.

DFC -22 010 -V

SERIES

DFC: Digital ow controller

PRESSURERANGE*

-22: 0 to 100 mL/min

-26: 0 to 200 mL/min

-32: 0 to 500 mL/min

-37: 0 to 1000 mL/min

-39: 0 to 2 L/min

-43: 0 to 5 L/min

-48: 0 to 10 L/min

-56: 0 to 100 L/min

BODYSIZE

005: Very low ow 010: Low ow 050: Medium ow 100: High ow

*Consult factory for ranges from 0-0.5 mL/min up to 0-100 L/min.

ACCESSORIES

L 2-A A

DIGITALINTERFACE

2: RS-232 default (RS-485 display selectable) 3: RS-232 default with Modbus® (RS4-85 display selectable) 3: RS-232 default with Modbus® (RS-485 display selectable), body

size 100

OUTPUTSIGNAL

A: 0-5 VDC default (4-20 mA, 0-10 VDC display selectable)

DISPLAY

L: LED display

FITTINGS

-A: 1/8˝ compression (very low, low)

-B: 1/4˝ compression (medium)

-D: 3/8˝ compression (high)

SEALMATERIAL

-V: Fluoroelastomer

Model Description

GFM-110P GFM-220PE

110 V power supply

220 V power supply Note: 1.5 ft RS-232 interface 3-wire 9-pin D connector included. For RS-485 contact factory for A-DFM-CBL-A485DP 3 ft RS-485 3.5 mm stereo-audio connection with stripped ends available for purchase.

Modbus® is a registered trademark of Schneider Automation, Inc.

DWYER INSTRUMENTS, INC.

Important Notice: Dwyer Instruments, Inc. reserves the right to make changes to or discontinue any product or service identied in this publication without notice. Dwyer advises its customers to obtain the latest version of the relevant information to verify, before placing any orders, that the information being relied upon is current.