Products
Condition monitoring
Water flow meter
SU ultrasonic flowmeters for water and oil based media
SU8021

Ultrasonic flow meter

Name: SU8021
Brand: ifm
SKU: SU8021
Price: 604.00 USD

SU8021

SUR11XXBFRKG/US

Ultrasonic flow meter

SU8021

SUR11XXBFRKG/US

Accurate flow measurement of ultrapure water and water
A robust, component-free measuring pipe made of stainless steel offers high media resistance and permanent ingress resistance
The highly accurate inline measurement process eliminates any influence of varying wall thicknesses and pipe materials
Operating status LED signals the sensor status and allows conclusions about process quality

Convenient operation via buttons or parameter setting via IO-Link

View other products in this family of sensors

Product characteristics

Measuring range

1...240 l/min

0.06...14.4 m³/h

16...3804 gph

0.26...63.4 gpm

Process connection

G 1 DN25 external thread

Application

System

gold-plated contacts

Media

ultra-pure water; water; water-based media

Note on media

water-based media: for media with >10 % additives, the repeatability is the only available value

Medium temperature

-20...100 °C

-4...212 °F

Min. bursting pressure

150 bar

15 MPa

Pressure rating

100 bar

10 MPa

Vacuum resistance [mbar]

-1000

MAWP (for applications according to CRN) [bar]

100

Electrical data

Operating voltage [V]	18...32 DC; (to SELV/PELV)
Current consumption [mA]	< 75
Protection class	III
Reverse polarity protection	yes
Power-on delay time [s]	5
Measuring principle	ultrasonic

Inputs

Inputs	counter reset

Outputs

Total number of outputs	2
Output signal	analog signal; pulse signal; analog signal; IO-Link; frequency signal; diagnostic signal; totalizer switching signal
Electrical design	PNP/NPN
Output function	normally open / closed; (configurable)
Max. voltage drop switching output DC [V]	2
Permanent current rating of switching output DC [mA]	100
Switching frequency DC [Hz]	0...10000
Analog current output [mA]	4...20
Max. load [Ω]	500
Pulse output	flow rate meter
Short-circuit protection	yes
Type of short-circuit protection	yes (non-latching)
Overload protection	yes

Measuring/setting range

Measuring range

1...240 l/min

0.06...14.4 m³/h

16...3804 gph

0.26...63.4 gpm

Display range

-288...288 l/min

-17.28...17.28 m³/h

-4565...4565 gph

-76.08...76.08 gpm

Resolution

0.1 l/min

0.001 m³/h

1 gph

0.02 gpm

Set point SP

2.3...240 l/min

0.139...14.4 m³/h

37...3804 gph

0.61...63.4 gpm

Reset point rP

1.1...238.8 l/min

0.064...14.325 m³/h

17...3784 gph

0.28...63.07 gpm

Analog start point ASP

-240...192 l/min

-14.4...11.522 m³/h

-3804...3044 gph

-63.4...50.73 gpm

Analog end point AEP

-192...240 l/min

-11.522...14.4 m³/h

-3044...3804 gph

-50.73...63.4 gpm

Low flow cut-off LFC

1...12 l/min

0.06...0.72 m³/h

16...190 gph

0.26...3.17 gpm

Frequency end point, FEP

48.1...240 l/min

2.889...14.4 m³/h

763...3804 gph

12.72...63.4 gpm

Frequency at the end point FRP [Hz]

1...10000

Volumetric flow quantity monitoring

Pulse length [s]	0.002...2
Pulse value	0.02...99990000 l; 0.005...26414563.515 gal

Temperature monitoring

Measuring range

-20...100 °C

-4...212 °F

Display range

-44...124 °C

-47.2...255.2 °F

Resolution

0.1 °C

0.1 °F

Set point SP

-19.6...100 °C

-3.2...212 °F

Reset point rP

-20...99.6 °C

-4...211.2 °F

Analog start point

-20...76 °C

-4...168.8 °F

Analog end point

4...100 °C

39.2...212 °F

Frequency start point, FSP

-20...76 °C

-4...168.8 °F

Frequency end point, FEP

4...100 °C

39.2...2121 °F

Frequency at the end point FRP [Hz]

1...10000

Accuracy / deviations

Flow monitoring

Accuracy (in the measuring range)	± (1,0 % MW + 0,5 % MEW)
Repeatability	± 0,2 % MEW

Temperature monitoring

Accuracy [K]	± 2,5 (Q > 5 % MEW)
Temperature coefficient [% of the span / 10 K]	0,2

Reaction times

Flow monitoring

Response time [s]	< 0.25; (dAP = 0, T09)
Damping process value dAP [s]	0...5

Temperature monitoring

Dynamic response T05 / T09 [s]	5,7 / 86

Software / programming

Diagnostic functions	direction of flow detection; signal quality

Interfaces

Communication interface

IO-Link

Transmission type

COM2 (38,4 kBaud)

IO-Link revision

1.1.3

SDCI standard

IEC 61131-9: 2013-07

Profiles

Identification and Diagnosis (0x4000)

Required master port class

Process data analog

Process data binary

Min. process cycle time [ms]

9.6

IO-Link process data (cyclical)

Function	bit length
totalizer	32
Flow monitoring	32
Temperature monitoring	32
status	4
Output 1	1
Output 2	1

Supported DeviceIDs

Type of operation	DeviceID
default	1463

Operating conditions

Ambient temperature [°C]	-20...60
Storage temperature [°C]	-25...80
Protection	IP 67

Tests / approvals

EMC

DIN 61326-1:2021

CPA approval

model number	002US
accuracy class	1,5

Shock resistance

DIN IEC 68-2-27

20 g (11ms)

Vibration resistance

DIN IEC 68-2-6

5 g (10...2000Hz)

MTTF [years]

160

UL approval

UL approval number	I034
File number UL	E174189

Pressure equipment directive

can be used for group 2 fluids; group 1 fluids on request

Mechanical data

Weight [g]	451.8
Type of mounting	inlet pipe length 5xDN; outlet pipe length 1xDN
Material	housing: stainless steel (1.4404 / 316L); Display: PFA; sealing Display: FKM; connector: POKAN
Materials (wetted parts)	Pipe section: stainless steel (1.4404 / 316L); Process connection sealing: Centellen Gasket
Process connection	G 1 DN25 external thread
Surface characteristics Ra/Rz of the wetted parts	1.25 µm

Displays / operating elements

Display

	Color display 1,44", 128 x 128 pixels
Switching function	2 x LED, yellow
diagnosis	1 x LED, three-color

Accessories

Items supplied

Gasket 2, Centellen

package insert

Remarks

MW = Measured value

MEW = Final value of the measuring range

pulse and totalizer signal are only available for one of the two outputs

the accuracy indications are adhered to over the entire application area

Pack quantity

1 pcs.

Electrical connection

Connection	Connector: 1 x M12; coding: A; Contacts: gold-plated

Diagrams and graphs

Note on pressure loss

derating ambient temperature

1	Ambient temperature
2	Medium temperature

ifm efector, inc. • 1100 Atwater Drive • Malvern • PA 19355 — We reserve the right to make technical alterations without prior notice. — EN-US — SU8021-00 — 21.10.2022 —