Specs at a glance
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Measurement range
Conductivity:
0 µS/ cm...100 mS/ cm
Build-up thickness:
0 mm…10 mm -
Process temperature
-20°C…+100°C
(-4°F...+212°F)
+150°C (+302°F) for 1h -
Process pressure
Vacuum...25 bar
(Vacuum...362.5 psi) -
Measuring method
Capacitive- conductive
Field of application
The Liquitrend QMW43 is developed for the food and beverage industry to help customers to ensure product safety, improve quality and increase the availability of installations. Base your decisions on the unique and reliable measurement of buildup thickness and conductivity via the combination of conductive and capacitive measuring modes.
Cleaning optimization, blending homogeneity monitoring and media differentiation of liquids, suspensions, pasty media etc.
For the use in storage, mixing and process vessels with or without an agitator, pipes and equipment periphery
Process connections: Threads and hygienic connections
Sensor design: Flush-mounted, surface roughness Ra<0.76µm
Temperature: -20 to +100°C (-4 to +212°F), CIP/SIP to 150°C (302°F) for 1 hour
Certificates and declarations: 3A, FDA, EHEDG and EG1935/2005, EN10204- 3.1
Benefits
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Reliable, repeatable and accurate measurement of buildup thickness and conductivity regardless of media type
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Conductive as well as capacitive measuring cycles, the device automatically detects the most accurate measuring mode and uses it automatically
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Verification of cleaning status without the need to open the tank
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Compact and flush-mounted stainless-steel sensor offers the perfect insight into the conditions in pipelines or tanks at all critical locations
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Plug and Play - simple commissioning without presettings
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Hygienic safety by Design and material traceability are a matter of course
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Integrated digital communication option via IO-Link
Videos
Lean selection
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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity

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Standard products
- Reliable, robust and low-maintenance
Technical excellence
Simplicity
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Specialized products
- Designed for demanding applications
Technical excellence
Simplicity
Variable
FLEX selections | Technical excellence | Simplicity |
---|---|---|
Fundamental selection Meet your basic measurement needs |
Technical excellence
|
Simplicity
|
Lean selection Handle your core processes easily |
Technical excellence
|
Simplicity
|
Extended selection Optimize your processes with innovative technologies |
Technical excellence
|
Simplicity
|
Xpert selection Master your most challenging applications |
Technical excellence
|
Simplicity
Variable |
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Measuring principle
Medium consistency
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Measuring method
Capacitive- conductive
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Application
Continuous inline measurement of build-up and liquid conductivity
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Supply voltage
10…30 VDC
IO-Link: 18…30 VDC -
Measurement range
Conductivity:
0 µS/ cm...100 mS/ cm
Build-up thickness:
0 mm…10 mm -
Accuracy
Build-up:
<= 1% of measuring range
Conductivity:
0...2 mS/ cm: <= 5% of reading
2...20 mS/ cm: <= 7% of reading
20...50 mS/ cm: <= 10% of reading
50...100 mS/ cm: <= 15% of reading -
Ambient temperature
-40°C…+70°C (-40°F...+158°F)
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Process temperature
-20°C…+100°C
(-4°F...+212°F)
+150°C (+302°F) for 1h -
Process pressure
Vacuum...25 bar
(Vacuum...362.5 psi) -
Output / communication
4...20 mA
Frequency
IO-Link -
Connection
Threads G1", G3/4", M24,
Tri-Clamp ISO2852, DIN11851 -
Ex certification
No Ex certificates
CSA C/US General Purpose -
Additional certifications
EN10204- 3.1
EHEDG
3-A
EG1935/2004
CRN approval -
Options
Customer specific configuration
Cleaned from oil and grease
Surface roughness test
Welding- and process adapters
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