Measurement of

Mass flow, volume flow, density, sensor temperature, fraction A flow, fraction B flow, fraction A in %

Measurement functions

• Totalizer 1

Totalization of mass flow, volume flow, fraction A, fraction B

• Totalizer 2

Totalization of mass flow, volume flow, fraction A, fraction B

• Single and 2-stage batch function

Batching function with the use of one or two outputs for dosing in high and low speed

• 4 programmable limits

4 programmable high/low limits for mass flow, volume flow, density, sensor temperature, fraction A flow, fraction B flow, fraction A in %. Limits will generate an alarm if reached.

Digital input

Functions

Start batch, stop batch, start/stop batch, hold/continue batch, reset totalizer 1, reset totalizer 2, reset totalizer 1 and 2, zero adjust, force frequency output, freeze frequency output

High signal

• Nominal voltage: 24 V DC
• Lower limit: 15 V DC
• Upper limit: 30 V DC
• Current: 2 … 15 mA

Low signal

• Nominal voltage: 0 V DC
• Lower limit: -3 V DC
• Upper limit: 5 V DC
• Current: -15 … +15 mA

Input

Approx. 10 k?

Switching

Max. 100 Hz

Digital output 1 and 2

Functions

• Output 1:
  Pulse, frequency, redundancy pulse, redundancy frequency 2-stage batch, batch
• Output 2:
  Redundancy pulse, redundancy frequency, 2-stage batch

Voltage supply

3 … 30 V DC (passive output)

Switching current

Max. 30 mA at 30 V DC

Voltage drop

? 3 V DC at max. current

Leakage current

? 0.4 mA at max. voltage 30 V DC

Load resistance

1 … 10 k?

Switching frequency

0 … 12 kHz 50 % duty cycle

Functions

Pulse, frequency, redundancy pulse, redundancy frequency 2-stage batch, batch

Communication

Modbus RS 232C

• Max. baud rate: 115 200 baud
• Max. line length: 15 m at 115 200 baud
• Signal level: according to EIA-RS 232C

Modbus RS 485

• Max. baud rate: 115 200 baud
• Max. line length: 1200 m at 115 200 baud
• Signal level: according to EIA-RS 485
• Bus termination: Integrated. Can be enabled by inserting wire jumpers.

Galvanic isolation

All inputs, outputs and communication interfaces are galvanically isolated. Isolation voltage: 500 V.

Power

Supply

24 V DC nominal

Tolerance

20.4 V DC … 28.8 V DC

Consumption

Max. 7.2 W

Fuse

T1 A/125 V, not replaceable by operator

Environment

Ambient temperature

• Storage -40 °C … +70 °C (-40 °F … +158 °F)

Operation conditions

Horizontally mounted rail.
For SIFLOW FC070 Std.: 0 … 60 °C (32 … 140 °F)
For SIFLOW FC070 Ex CT:
-40 … +60 °C (-40 … +140 °F)

Vertically mounted rail
For SIFLOW FC070 Std.:
0 … 45 °C (32 … 113 °F)
For SIFLOW FC070 Ex CT:
-40 … +45 °C (-40 … +113 °F)

Altitude

• Operation: -1000 … 2000 m
  (pressure 795 … 1080 hPa)

Enclosure

Material

Noryl, color: anthracite

Rating

IP20/NEMA 2 according to IEC 60529

Mechanical load

According to SIMATIC standards (S7-300 devices)

Ex approvals

SIFLOW FC070 Standard

ATEX: II 3G Ex nA II T4

SIFLOW FC070 Ex CT

ATEX, IECEx, EAC Ex, FM, CSA, NEPSI, INMETRO:

• Zone 2: Ex nA [ia] IIC T4

FM:

• Class I, Div. 2:
  Grp. A, B, C, D (interface to Class I+II+III, Div. 1)

Custody transfer approvals

SIFLOW FC070 Ex CT

PTB Germany approval no.: 5.4.11/11.22
OIML R 139 - Compressed gaseous fuel measuring systems for vehicles
NTEP for USA and Canada, approval no: 97-111A3

EMC performance

Emission

EN 55011/CISPR-11

Immunity

EN/IEC 61326-1

NAMUR

Within the limits according to “General recommendations” with error criteria A in accordance with NE 21

Programming tools

SIMATIC S7

Configuration through backplane P-BUS, PLC program and WinCC flexible

SIMATIC PCS7

Configuration trough backplane P-BUS and PLC/WinCC faceplates, certified driver

SIMATIC PDM

Through Modbus port RS 232C and RS 485, certified driver