Yokogawa Corporation of America2 Dart Road, Newnan, Georgia U.S.A. 30265

GS 04Q01B01-01E©Copyright 2018

3rd Edition

GeneralSpecificationsGS 04Q01B01-01E-A

Yokogawa Y-Flow® YFFC Orifice Flow Computer

OverviewYokogawa’s low power orifice flow computer offers flexible I/O points and superior data collection with a wide range of connectivity options. By combining Yokogawa’s EJX910A multivariable transmitter (DP and SP) and Y-Flow® YRTU, the accuracy and stability specifications make the Y-flow a superior product with market. Whether you are measuring gas flow for custody transfer or need wellhead control and monitoring, Yokogawa offers both the performance and stability required in the most rigorous environment.

• API Chapter 21 compliancy• AGA 3 & 5 capability• AGA 8 (Detailed & Gross Methods I & II) & NX-19• Single and Bi-Directional (total vol. + avg. vol.)

measurement• Multiple run capability • Solar panel with battery back-up or AC powered with

battery back-up• Wide array of wireless connectivity options (Cellular,

wireless radio and satellite)• Pole mount, wall mount or direct mount options• Wide variety of enclosure size options

Yokogawa EJX910A Multivariable Transmitter Accuracy SpecificationsSpecifications for the EJX910A are condensed for the purpose of this document. Please see GS01C25R01-01EN for more detailed information.

The EJX910A uses the established DPharp pressure sensor technology that allows for simultaneous measurement of differential pressure and static pressure (absolute or gauge) from one sensor. Out of all the Yokogawa pressure transmitters, the EJX910A has the best accuracy for combined DP and SP measurement, which makes it an excellent choice for flow calculations with a YRTU.

Reference Accuracy

(Includes terminal-based linearity, hysteresis, and repeatability)

• DP Up to ±0.04% of span standard• SP ±0.1% of span (Absolute)

Long Term Stability (All normal operating conditions, including overpressure effects)

• DP ±0.1% of URL per 10 years Turndown• DP 200:1• SP 25:1

Measurement Span/Range DP inH20 SP psia

MSpan 2 to 400 145 to 3300

Range -400 to 400 0 to 3300

HSpan -10 to 2000 145 to 3300

Range -2000 to 2000 0 to 3300

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All Rights Reserved. Copyright © 2016, Yokogawa Electric Corporation. Subject to change without notice. GS 04Q01B01-01E©Copyright 2018

3rd Edition

YFFC Technical SpecificationInput Power Supply

• Input Power: 12-30 VDC• One (1) power supply/rechargeable battery input with

screw terminals• Integrated solar panel charger supporting up to 20W solar

panel

Power Monitoring and Battery Backup • Supply voltage monitoring through A/D with low supply

voltage alarm• 3.6 VDC lithium ion battery backup for database, history,

audit trial, time/date and RAM• 20W on board battery charger, 90W maximum

• 32AH solar panel battery (optional)

Performance• Processor: ARM Dual Core 32 bit @ 48 Mhz• SRAM Memory: 32MB• SPI Flash Memory: 32MB

• A/D: 16-bit with optional HART filtering

Display Options• 4 line alphanumeric display with push button keypad

Enclosure ARCA-JIC Series NEMA 4X Non-Metallic, UL 50

Compliant. Designed to NEMA 3R after milling and external

mechanisms are added. Stainless steel lockable latch & continuous hinge with FIP

door gasket.

cULus Approval: E488925 (Type 1)

Enclosure Vibration Test Sweep frequency endurance test on x,y, and z axis from

10 Hz-2000Hz; with Endurance Dwell test for 15 mins at 0.5G. Based on IEC60654-3.

Operating Temperature• -40C to 70C (-40F to 160F)

Communications Options• Standard: Two (2) Serial RS-232/RS-485• One (1) Ethernet port, (1) USB Host Port, (1) USB Device

Port• Wireless Communication: Cellular (CDMA/GSM), Radio

(spread spectrum licensed & unlicensed frequency), Satellite (LEO &GEO)

• Protocols: MODBUS TCP/IP, MODBUS Serial, ERC Hex ASCII (native)

Input and Output (I/O)• Analog Inputs: Four (4) universal analog inputs, 0-5VDC or

4-20mA (Requires 250 ohm resistor)• RTD Inputs: One (1) temperature probe• Digital Input/Output: Two (2) form A/C pulse input, Two (2)

form C relays, Two (2) DI, Two (2) DO

Optional I/O Extender Board• Two (2) Serial RS-232/RS-485• Four (4) universal analog inputs• One (1) analog output• One (1) RTD temperature probe• Two (2) form A/C pulse input• Three (3) DI, Three (3) DO• Opto 22 G4 Voltage Signal Conditioner

Approval• UL and cUL Class I Div II Group A,B,C,D

Software• Field Manager

Warranty• 4 years limited warranty

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All Rights Reserved. Copyright © 2016, Yokogawa Electric Corporation. Subject to change without notice. GS 04Q01B01-01E©Copyright 2018

3rd Edition

Model Codes

Model

R/YFFC EFM- Flow Computer

Multi-variable Transmitter; Range

-A7 400“ 0.04% 3300G 0.1%

-A8 +/- 400“ 0.04% 3300G 0.1%

-A9 2000“ 0.04% 3300G 0.1%

-B1 +/- 2000“ 0.04% 3300G 0.1%

Temp 1

X1 None

A1 6‘

A2 10‘

A3 15‘

Mounting

X1 None

A1 Pole Mount

A2 Direct Mount

A3 Wall Mount

LCD Display

X1 None

A2 4 Line

A3 Keypad & 4 Line

Laptop Connection

X1 None

A1 RS232 (MS)

A2 USB

A3 Ethernet

Com Gear 1

-X1 None

-A1 Freewave FGR

-A2 Freewave MM2

-A3 Freewave MM2-P-T

-A9 MDS EL805

-B1 Iridium 9602

-B2 Multi-Tech V

-B3 Multi-Tech A

-B5 MDS Kit

-B6 Freewave FGR Kit

Connection 1

X1 None

A1 Omni (Stubby)

A2 Bulkhead

Ext Serial Port

X1 None

A1 1 ESP

A2 2 ESP

Com Gear 2

X1 None

A1 Freewave FGR

A2 Freewave MM2

A3 Freewave MM2-P-T

A9 MDS EL805

B1 Iridium 9602

B2 Multi-Tech V

B3 Multi-Tech A

B5 MDS Kit

B6 Freewave FGR Kit

Connection 2

X1 None

A1 Omni (Stubby)

A2 Bulkhead

E3 Processor

-A3 Full (Both) E3UES

Relays; Form C

X1 None

A1 (1) Form C

A2 (2) Form C

Battery (with tray, wire & fuse) Note

X1 None

A2 7AH

A3 17AH 1

A4 32AH 2

Sample MS Code:R/YFFC-A7A1A1A2A2-X1X1X1X1X1-A3A1A2X1X1-X1X1A1X1X1-X1A4/X1

Notes:Note 1: 17 Ah Battery requires minimum 12x10x6 enclosureNote 2: 32 Ah Battery requires minimum 14x12x7 enclosureNote 3: Increase the enclosure size by 2

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All Rights Reserved. Copyright © 2016, Yokogawa Electric Corporation. Subject to change without notice. GS 04Q01B01-01E©Copyright 2018

3rd Edition

Solar

X1 Not Attached

Pressure 1

X1 None

A6 50G

A8 200G

B2 500G

B5 1500G

B7 3000G

C2 150HG

C4 300HG

Pressure 2

-X1 None

-A6 50G

-A8 200G

-B2 500G

-B5 1500G

-B7 3000G

-C2 150HG

-C4 300HG

Analog Out

X1 None

A1 Analog Output (3 chan)

SPM Signal Protection Module

X1 None

A1 (4) 8 VDC

A2 (4) 35 VDC

A4 8 & 35

A6 35 & 35

Sample MS Code:R/YFFC-A7A1A1A2A2-X1X1X1X1X1-A3A1A2X1X1-X1X1A1X1X1-X1A4/X1

Notes:Note 1: 17 Ah Battery requires minimum 12x10x6 enclosureNote 2: 32 Ah Battery requires minimum 14x12x7 enclosureNote 3: Increase the enclosure size by 2

A8 3 Modules - 8 VDC 3

A9 3 Modules - 2x8 ; 1x35 VDC 3

B2 3 Modules - 1x8 ; 2x35 VDC 3

B4 3 Modules - 35 VDC 3

Extender

X1 None

A1 (4) 8 VDC

Temp 2

X1 None

A1 6‘

A2 10‘

A3 15‘

Optos

-X1 None

-A1 Red (DC Out)

-A2 Wht (DC In)

-A3 Yel (AC In)

-A4 Blk (AC Out)

-A5 Red \ Red

-A6 Red \ White

-A7 White \ White

Enclosure; Dimensions in Inches

A4 10x10x6

A5 12x10x6

A6 14x12x7

A7 16x14x8

A8 18x16x10

Power Option

/X1 None

Y-Flow Accessories

M1274XE RS- 232 Serial PC Cable; 10 ft

M1274XF RS- 232 Serial PC Cable; 15 ft

M1274XG RS- 232 Serial PC Cable; 25 ft

M1274XH USB to Serial Adapter Cable

M1274XJ USB 2.0 A-Male to B-Male 10 ft

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All Rights Reserved. Copyright © 2016, Yokogawa Electric Corporation. Subject to change without notice. GS 04Q01B01-01E©Copyright 2018

3rd Edition

YFFC Dimensional Drawing

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All Rights Reserved. Copyright © 2016, Yokogawa Electric Corporation. Subject to change without notice. GS 04Q01B01-01E©Copyright 2018

3rd Edition

E3 Processor Board Wiring

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All Rights Reserved. Copyright © 2016, Yokogawa Electric Corporation. Subject to change without notice. GS 04Q01B01-01E©Copyright 2018

3rd Edition

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