Flow Switches for Hygienic & Utility Applications
Flow switches for process monitoring in hygienic production and utility systems, including the SA4100 IO-Link sensor and SI6600 / SI6700 / SI6800 series. Explore applications, technical characteristics, connection accessories and Tetra Pak Part Numbers for accurate component identification.
Compact flow switches for process and utility duties
The supplied OEM reference separates the range into an SA4100 IO-Link solution for hygienic applications and SI6600 / SI6700 / SI6800 flow switches for utility applications. The SA4100 is shown for water, water-glycol solutions or air and combines flow and temperature measurement in one instrument.
The SI series is presented in different probe lengths for utility services and does not use IO-Link in the supplied reference.
SA4100 and SI-series flow switches
SA4100 IO-Link
IO-Link flow switch for hygienic applications, water, water-glycol solutions or air. The source highlights simultaneous flow and temperature measurement, red/green display indication, switching output, analogue signal and IO-Link.
SI6600 / SI6700 / SI6800
Flow switches in different lengths for utility applications. The supplied table identifies stainless-steel construction, G1" thread connection, 19–36V DC PNP NO M12 and IP67.
Flow and temperature monitoring in one sensor
Measurement of flow and temperature at the same time.
Switching output, analogue signal and IO-Link are identified in the source.
Red/green display supports clear identification of the acceptable range.
The process connection can be rotated for optimum alignment.
The source lists dedicated fitting and clamp-adapter components for food-contact installation.
A separate welding adapter is listed for non-food-contact utility applications.
Tetra Pak Part Numbers
All visible Part Numbers below are preserved from the supplied Tetra Pak Components screenshots.
| Description | Denomination | Tetra Pak Part Number |
|---|---|---|
| SA4100, IO Link · Material: Stainless steel · Probe diameter: 8 mm · Probe length: 100 mm · Electrical connection: 1 × M12 · FDA approved, EC 1935/2004-Approval | SA4100 L=100 mm IP67 | 70000148495 |
| Description | Denomination | Tetra Pak Part Number |
|---|---|---|
| Connector · 8 mm sensor connection with compressing fitting and clamping ring in PEEK for sensor · G 1/2" thread for clamp adapter | E43020 G1/2 fitting for clamp adapter | 70000148475 |
| Adapter to clamp · G 1/2" → 1" & 1 1/2" Clamp (DN 25/40) · to be used with G 1/2" connector 70000148475 | E43311 Clamp adapter | 90521-4879 |
| Description | Denomination | Tetra Pak Part Number |
|---|---|---|
| Connector · 8 mm sensor connection with compressing fitting · 13.7 mm welding connection for non-food contact applications | E40265 Welding adapter | 70000157957 |
| Description | Denomination | Tetra Pak Part Number |
|---|---|---|
| SI6600 / SI6700 / SI6800 · 19-36V DC PNP NO M12 · IP67 · Material: Stainless steel · Connection: G1" thread | SI6600 L=20mm, IP67 | 90512-2710 |
| Same series / configuration | SI6700 L=38mm, IP67 | 90512-2711 |
| Same series / configuration | SI6800 L=55mm, IP67 | 90512-2712 |
| Description | Denomination | Tetra Pak Part Number |
|---|---|---|
| For SI6600 / SI64700 / SI6800 — Please see “Flow/Accessories” | Accessory reference only | Not shown in supplied source |
Where flow switches are used
Hygienic process lines
SA4100 supports flow monitoring where hygienic construction and food-contact connection components are required.
Water & glycol circuits
The SA4100 application text specifically identifies water and water-glycol solutions.
Utility services
SI6600, SI6700 and SI6800 are presented for utility applications with different probe lengths.
Match the sensor and adapter together
Correct identification requires both the flow-switch configuration and the process connection.
Which model provides IO-Link?
The supplied reference identifies SA4100 as the IO-Link flow switch. The SI6600 / SI6700 / SI6800 family is described as utility flow switches without IO-Link.
What probe lengths are listed for the SI series?
SI6600 is shown at 20 mm, SI6700 at 38 mm and SI6800 at 55 mm.
Does SA4100 measure temperature?
Yes. The source specifically lists simultaneous measurement of flow and temperature as a benefit.
Can the same SA4100 connector be used for every installation?
The OEM reference separates food-contact connection components from the welding adapter intended for utility/non-food-contact applications.
Is there a Tetra Pak Part Number for the SI-series adapters here?
No Part Number is visible in the supplied table. The source directs users to Flow/Accessories, so no number has been inferred or added.
Does LGN Group manufacture these OEM components?
No. Tetra Pak Part Numbers are presented as OEM references for technical identification and sourcing support.
Need help identifying a flow switch or connection adapter?
Send LGN Group the existing Tetra Pak Part Number, sensor model, probe length, process connection and available nameplate information for technical identification and sourcing support.
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