Type 8098 - FLOWave SAW Flowmeter from Bürkert

Type 8098 - FLOWave SAW Flowmeter from BürkertThe Type 8098 flowmeter is part of the FLOWave product range. It is based on SAW (Surface Acoustic Waves) technology and is mainly designed for applications with the highest hygienic demands. This is achieved by using suitable stainless-steel materials, a measuring tube completely free of any internal parts and an ideal outer hygienic design. FLOWave offers a range of integrated functions including the advantages of flexibility, ease of cleaning, compact dimensions, lightweight, easy installation and handling, and is compliant with numerous standards. Optimal measurement results can be achieved with homogeneous liquids, free of air and solid particles. For liquids with high viscosity, an integrated viscosity compensation can be activated. Gas and steam cannot be measured; however, their flow does not have any negative effect on the device or its operation and other liquids flowing through afterwards are measured correctly as before. Beside volume flow, a density measurement optional feature is available. With this option, the mass flow is calculated based on volume flow and density measurements. Special functions derived from further process values (differentiation factor (DF), acoustic transmission factor and concentration) offer additional information about the particular liquid in use (for details, see data sheet).

 

Features

Type 8098 - FLOWave SAW Flowmeter Features:

  • No obstacles inside the measuring tube, compact, lightweight and low energy consumption
  • Conforms to hygienic requirements, CIP/SIP compatible
  • Ideal for liquids with low or no conductivity
  • Digital communication (Bürkert system bus (büS)/CANopen or IO-Link), parameterisation via Communicator, display
  • Optional: ATEX/IECEx certification, II 3G/D

Specifications

Product properties
Materials
Make sure the device materials are compatible with the fluid you are using.
Non-wetted parts
Sensor housing
  • For sensor with process connection size ≤ DN 50/2": stainless steel 304/1.4301
  • For sensor with process connection size > DN 50/2": stainless steel 316L/1.4435
Wetted parts
Measurement tube and process 
connection		Stainless steel 316L/1.4435 with low delta ferrite content
Surface quality
Measurement tube (inner surface)
  • Ra < 0.8 µm (= 30 µin., ASME BPE SF3) or
  • Ra < 0.4 µm electro-polished according to ISO 4288 (= 15 µin., ASME BPE SF4) 
Measuring elementInterdigital transducers
Measuring principleBased on SAW (Surface Acoustic Waves)
Measuring range
Volume flow rate measurement0…1.7 m3/h up to 0…200 m3/h
Density measurement0.8…1.3 g/cm3 (inactive by default, selectable upon request)
Mass flow rate measurement0…1 360 kg/h up to 0…260 000 kg/h (inactive by default, selectable upon request)
Temperature measurement- 20…+ 140 °C (- 4…+ 284 °F)
Special function

Active by default, deselectable upon request.

  • ATF: acoustic transmission factor
  • DF: differentiation facto
Performance data

Volume flow rate measurement

Under reference conditions i.e. measuring fluid = water free from gas bubbles and solids, ambient and water temperature = 23 °C ± 1 °C (73.4 °F ± 1.8 F), and short refresh time, while maintaining turbulent or laminar flow profile, with the minimum inlet (40 x DN) and outlet (1 x DN) distances and the appropriate internal diameter of the pipes. Deviation from reference conditions can be adjusted through the use of a built-in correction K factor adjustment or teach-in procedure.

Measurement deviation
  •  From 10 % of full scale up to full scale: ± 0.4 % of the measured value
  • From 1 % of full scale up to 10 % of full scale: ± 0.08 % of full scale
Repeatability
  • From 10 % of full scale up to full scale: ± 0.2 % of the measured value
  • From 1 % of full scale up to 10 % of full scale: ± 0.04 % of full scale
Refresh timeSelectable between very short, short and long
Density measurementAs an option
Under reference conditions i.e. measuring fluid = water free from gas bubbles and solids, ambient and water temperature = 23 °C ± 1 °C (73.4 °F ± 1.8 F). Deviations from reference conditions, especially exposure of the device to temperatures above 90 °C can be adjusted through the use of a built in adjustment procedure
Measurement deviation
  • Standard product adjustment: ± 2 % of the measured value
  • After teach-in: ± 1 % of the measured value (at teach-in density value)
Repeatability± 1 % of the measured value
Refresh timeSelectable between very short, short and long
Mass flow rate measurementAs an option
Under reference conditions i.e. measuring fluid = water free from gas bubbles and solids, ambient and water temperature = 23 °C ± 1 °C (73.4 °F ± 1.8 F), and short refresh time, while maintaining turbulent or laminar flow profile, with the minimum inlet (40 x DN) and outlet (1 x DN) distances and the appropriate internal diameter of the pipes. Deviation from reference conditions, can be adjusted through the use of a built-in correction K factor adjustment or teach-in procedure.
Measurement deviation
  • Standard K-factor:
    • From 10 % of full scale up to full scale: ± 2.4 % of the measured value
    • From 1 % of full scale up to 10 % of full scale: ± (2 % of the measured value + 0.08 % of full scale)
  • After teach-in:
  • From 10 % of full scale up to full scale: ± 1.4 % of the measured value at teach-in density and mass flow rate values
  • From 1 % of full scale up to 10 % of full scale: ± (1 % of the measured value + 0.08 % of full scale) at teach-in density and mass flow rate values
Repeatability
  • From 10 % of full scale up to full scale: ± 1.2 % of the measured value
  • From 1 % of full scale up to 10 % of full scale: ± (1 % of the measured value + 0.04 % of full scale)
Refresh time Selectable between very short, short and long
Temperature measurement
Measurement deviation
  •  For T° ≤ 100 °C (+ 212 °F): ± 1 °C (+ 1.8 °F)
  • For 100 °C (+ 212 °F) < T° < 140 °C (+ 284 °F): ± 1.5 %
Refresh timeApprox. 0.1 s

Q&A

Q&A Section with Expand/Collapse Icons

Type 8098 - FLOWave SAW Flowmeter Q & A:

+ What measurement principle does the Type 8098 use?
It uses Surface Acoustic Wave (SAW) technology—non-invasive, zero-pressure-drop measurements via acoustic waves transmitted through the tube wall.
+ What media can it measure?
Designed for clean, homogeneous liquids free of bubbles, solids, or gas. Gas or steam presence doesn’t harm it, but measurement stops while gas is present.
+ Is density and mass‑flow measurement included?
Yes—density and mass flow are optional upgrades at purchase. They cannot be retrofitted later.
+ Does it support hazardous area approvals?
Yes! Options include ATEX Zone 2, IECEx, and Class 1 Division 2 (HazLoc) with explosion-proof connectors and certified cable glands.
+What is the display and setup interface like?
Includes a removable display module and configurable via magnetic key. Parameters such as damping, monitoring, and event thresholds are set through the menu.

Downloads

Download Bürkert Type 8098 - FLOWave SAW Flowmeter Datasheet

 

 

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