Endress+Hauser Teqwave I Ultrasonic Concentration Meter
The Endress+Hauser Teqwave I is a smart insertion ultrasonic concentration meter designed for accurate real-time analysis of liquids in vessels and large pipes. It provides continuous, in-situ concentration measurement while simultaneously monitoring additional liquid parameters such as acoustic density, temperature and sound velocity.
Unlike conventional laboratory-based concentration analysis, Teqwave I measures directly in the process. This allows operators to continuously monitor liquid quality without repeatedly taking samples, helping improve process transparency, reduce operating costs and respond more quickly to concentration changes.
Insertion Ultrasonic Concentration Measurement
Teqwave I uses surface acoustic wave technology to detect changes in the acoustic properties of the measured liquid. The acoustic waveguide can detect even small changes, providing precise and reliable concentration measurement directly in the process.
The insertion design makes Teqwave I particularly suitable for:
Large process pipes
Tanks and vessels
Mixing tanks
Process reactors
Liquid storage vessels
Industrial liquid analysis
Continuous concentration monitoring
Continuous In-Situ Liquid Analysis
Teqwave I is designed for continuous concentration measurement rather than periodic laboratory sampling.
The instrument can provide real-time information about liquid concentration, allowing operators to monitor product quality and process conditions continuously.
This can help reduce:
Manual sampling
Laboratory analysis
Measurement points
Process interruptions
Operating costs
The result is improved process transparency and product quality control.
Designed for Vessels and Large Pipes
One of the main differences between Teqwave I and the Teqwave F is its insertion configuration.
Teqwave I is specifically designed for vessels and larger pipes, with available insertion lengths of:
180 mm (7 in)
500 mm (20 in)
This configuration allows the sensor to be inserted directly into the process medium without requiring a dedicated small-diameter flow section.
Measurement Independent of Flow Profile
Teqwave I provides accurate measurement independent of the flow profile.
This is particularly useful for installation in vessels and large pipelines where the flow conditions may not be as uniform as in a dedicated measuring tube.
The insertion sensor can therefore be integrated into a wider variety of process installations while maintaining reliable concentration measurement.
Multivariable Liquid Measurement
Teqwave I is more than a single-parameter concentration instrument. It can simultaneously provide multiple liquid measurement variables, including:
Concentration
Acoustic density
Temperature
Sound velocity
Dispersion
The maximum concentration measuring range is 0 to 100%, depending on the selected concentration application and application data.
The additional process variables provide greater insight into liquid characteristics and can reduce the need for separate measurement points.
Acoustic Density and Sound Velocity Measurement
The Teqwave I supports acoustic measurement of important liquid properties.
The specified ranges include:
Acoustic density: 0.7 to 1.5 g/cm³
Sound velocity: 600 to 2000 m/s
Temperature: 0 to +100 °C
Maximum measurement errors are:
Acoustic density: ±0.01 g/cm³
Temperature: ±0.5 K
Sound velocity: ±2 m/s
These additional variables make Teqwave I suitable for applications requiring more comprehensive liquid characterization.
Flexible Concentration Applications
Teqwave I uses an application-based concentration measurement concept.
The measuring range is defined according to the selected concentration application, with the maximum specified range reaching 0–100%. Applications can be matched to individual process requirements and extended when measurement tasks change.
This provides flexibility for different production processes and changing liquid concentration requirements.
Stainless Steel Construction
The sensor uses stainless steel 1.4571 (316 Ti) for wetted materials, with other materials available on request.
The robust construction is suitable for continuous industrial liquid analysis and long-term operation in process environments.
Wide Process Temperature Range
Teqwave I supports a process temperature range of:
0 to +100 °C (32 to +212 °F)
and a maximum process pressure of:
16 bar at 20 °C (232 psi at 68 °F).
This allows the concentration meter to be used across a wide range of industrial liquid processes.
Flexible Transmitter Options
The Teqwave I transmitter can be configured with either:
3.5-inch TFT color touch screen
LED status indication
The transmitter supports:
and can be installed conveniently using DIN rail mounting.
This provides flexible integration into industrial control and monitoring systems.
Long-Term Data Storage
The transmitter includes integrated storage for measured values for up to:
7.5 years.
Long-term data storage can support process analysis, quality monitoring, historical trend evaluation and optimization of production processes.
Maintenance-Free Measurement
The robust ultrasonic sensor design provides reliable measurement without mechanical moving parts.
This supports low-maintenance operation and helps reduce the maintenance requirements associated with continuous liquid concentration monitoring.
Typical Applications
The Endress+Hauser Teqwave I is suitable for:
Liquid concentration measurement
In-situ liquid analysis
Continuous concentration monitoring
Large pipe concentration measurement
Tank and vessel concentration measurement
Process liquid quality monitoring
Product quality control
Chemical concentration monitoring
Industrial liquid analysis
Mixing and blending processes
Storage vessel monitoring
Process optimization
Real-time liquid analysis
Key Features
Insertion ultrasonic concentration meter
Real-time in-situ liquid analysis
Designed for vessels and large pipes
Continuous liquid concentration measurement
Surface acoustic wave technology
Measurement independent of flow profile
Concentration range up to 0–100%, application dependent
Acoustic density measurement
Temperature measurement
Sound velocity measurement
Dispersion measurement
Acoustic density range 0.7–1.5 g/cm³
Sound velocity range 600–2000 m/s
Process temperature 0–100 °C
Maximum process pressure 16 bar at 20 °C
Insertion length 180 mm or 500 mm
Stainless steel 316 Ti wetted materials
4–20 mA and Modbus TCP
3.5" TFT color touch screen available
DIN rail installation
Up to 7.5 years measured-value data storage
Maintenance-free ultrasonic sensor design
