SB7257
Flow meter with integrated backflow prevention and
display
SBG32KM0FRKG
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SB7257-00 — 12.04.2021 —
Product characteristics
Measuring range 8...200 l/min 0.48...12 m³/h 130...3170 gph 2.1...52.8 gpm
Process connection
threaded connection G 1 1/2 internal thread
Application
Special feature
Gold-plated contacts
Media
Liquids; oils (viscosity 320 mm²/s at 40 °C)
Medium temperature [°C]
-10...100
Pressure rating [bar]
63
Pressure rating [Mpa]
6.3
Note on pressure rating at medium temperature >70°C: 50 bar / 5 MPa
SB7257
Flow meter with integrated backflow prevention and
display
SBG32KM0FRKG
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SB7257-00 — 12.04.2021 —
Electrical data
Operating voltage [V]
18...30 DC; (to SELV/PELV; "supply class 2" to cULus)
Current consumption [mA]
< 50
Protection class
III
Reverse polarity protection
yes
Power-on delay time [s]
< 3
Outputs
Total number of outputs
2
Output signal
switching signal; analogue signal; frequency signal; IO-Link
Output function
normally open / normally closed; (parameterisable)
Max. voltage drop switching
output DC
[V]
2
Max. current load per output [mA]
150; (200: ...60 °C; Ambient temperature; 250: ...40 °C; Ambient temperature)
Analogue current output [mA]
4...20
Max. load [Ω]
500
Short-circuit protection
yes
Overload protection
yes
Frequency of the output [Hz]
0...10000
Measuring/setting range
Measuring range 8...200 l/min 0.48...12 m³/h 130...3170 gph 2.1...52.8 gpm
Display range 0...240 l/min 0...14.4 m³/h 0...3805 gph 0...63.4 gpm
Resolution 0.1 l/min 0.01 m³/h 1 gph 0.1 gpm
Set point SP 1.4...200 l/min 0.08...12 m³/h 20...3170 gph 0.3...52.8 gpm
Reset point rP 0...198.6 l/min 0...11.92 m³/h 0...3150 gph 0...52.5 gpm
Frequency end point, FEP 13.4...200 l/min 0.8...12 m³/h 210...3170 gph 3.5...52.8 gpm
In steps of 0.02 l/min 0.02 m³/h 5 gph 0.1 gpm
Frequency at the end point
FRP
[Hz]
10...10000
In steps of [Hz]
10
Measuring dynamics
1:50
In steps of
10 Hz
Temperature monitoring
Measuring range -10...100 °C 14...212 °F
Display range -32...122 °C -25.6...251.6 °F
Resolution 0.1 °C 0.1 °F
Set point SP -9.3...100 °C 15.2...212 °F
Reset point rP -10...99.3 °C 14...210.8 °F
In steps of 0.1 °C 0.2 °F
Frequency start point, FSP -10...78 °C 14...172.4 °F
Frequency end point, FEP 12...100 °C 53.6...212 °F
Frequency at the end point
FRP
[Hz]
10...10000
Accuracy / deviations
Flow monitoring
Accuracy (in the measuring
range)
± 5 % MEW; (Q > 1 l/min; 20...70 °C Medium temperature)
SB7257
Flow meter with integrated backflow prevention and
display
SBG32KM0FRKG
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SB7257-00 — 12.04.2021 —
Repeatability
± 1 % MEW
Temperature monitoring
Temperature drift
0,029 °C / K
Accuracy [K]
3 K (25°C; Q > 1 l/min)
Response times
Flow monitoring
Response time [s]
0.01
Damping process value dAP [s]
0...5
In steps of [s]
0.1
Damping for the analogue
output dAA
[s]
0...5
In steps of [s]
0.1
Temperature monitoring
Dynamic response T05 / T09 [s]
T09 = 120 (Q > 1 l/min)
Software / programming
Parameter setting options
hysteresis / window; normally open / normally closed; switching logic; current/frequency
output; damping for the switching output / analogue output; display can be rotated and
switched off; standard unit of measurement; process value colour; calibration factor
Interfaces
Communication interface
IO-Link
Transmission type
COM2 (38,4 kBaud)
IO-Link revision
1.1
SDCI standard
IEC 61131-9 CDV
Profiles
Smart Sensor: Process Data Variable; Device Identification, Device Diagnosis
SIO mode
yes
Required master port type
A
Process data analogue
2
Process data binary
2
Min. process cycle time [ms]
3.2
Supported DeviceIDs Type of operation DeviceID
Default 1047
Operating conditions
Ambient temperature [°C]
0...60
Note on ambient temperature medium temperature < 80 °C
medium temperature < 100 °C: 0...40 °C
Storage temperature [°C]
-15...80
Protection
IP 65; IP 67
Tests / approvals
EMC DIN EN 61000-6-2
DIN EN 61000-6-3
Shock resistance DIN EN 60068-2-27 20 g (11 ms)
Vibration resistance DIN EN 60068-2-6 5 g (10...2000 Hz)
MTTF [years]
145
UL approval UL Approval no. I007
File number UL E174189
SB7257
Flow meter with integrated backflow prevention and
display
SBG32KM0FRKG
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SB7257-00 — 12.04.2021 —
Pressure Equipment Directive
Sound engineering practice
Mechanical data
Weight [g]
2810.2
Materials
stainless steel (1.4404 / 316L); PBT+PC-GF30;
PBT-GF20; PC; brass chemically nickel-plated
Materials (wetted parts)
stainless steel (1.4401 / 316); stainless steel (1.4404 / 316L);
brass (2.0371); brass chemically nickel-plated; PPS; O-ring: FKM
Process connection
threaded connection G 1 1/2 internal thread
Switching cycles mechanical
10 million
Displays / operating elements
Display Display unit 6 x LED, green
switching status 2 x LED, yellow
measured values alphanumeric display, red/green alternating
indication 4-digit
programming alphanumeric display, 4-digit
Remarks
Remarks Recommendation: use a 200-micron filter.
All data refer to oil with the following nominal viscosity:
320 cSt, 40 °C ± 3 K
MW = measured value
MEW = Final value of the measuring range
Pack quantity
1 pcs.
Electrical connection
Connector: 1 x M12; coding: A; Contacts: gold-plated
SB7257
Flow meter with integrated backflow prevention and
display
SBG32KM0FRKG
ifm electronic gmbh • Friedrichstraße 1 • 45128 Essen — We reserve the right to make technical alterations without prior notice. — EN-GB — SB7257-00 — 12.04.2021 —
Connection
OUT1:
- switching output volumetric flow quantity monitoring
- switching output Temperature monitoring
- frequency output volumetric flow quantity monitoring
- frequency output Temperature monitoring
- IO-Link
OUT2:
- switching output volumetric flow quantity monitoring
- switching output Temperature monitoring
- analogue output volumetric flow quantity monitoring
- analogue output Temperature monitoring
colours to DIN EN 60947-5-2
Core colours :
BK = black
BN = brown
BU = blue
WH = white
Diagrams and graphs
