Endress+Hauser Teqwave F Ultrasonic Concentration Meter
The Endress+Hauser Teqwave F is an inline ultrasonic concentration meter designed for continuous, real-time analysis of liquids in pipelines. It uses surface acoustic wave technology to measure liquid concentration directly in the process, eliminating the need for regular sampling and laboratory analysis.
Teqwave F is particularly suitable for skids and compact process systems, where manufacturers and end users need continuous monitoring of liquid concentration and product quality. Its multivariable measurement capability allows several process parameters to be monitored using a single measuring point.
Real-Time Inline Concentration Measurement
Teqwave F provides continuous concentration measurement directly in the pipeline. The ultrasonic measuring principle detects changes in the acoustic properties of the liquid and uses application-specific concentration data to determine the concentration of the measured medium.
The concentration measuring range can reach:
0 to 100%, depending on the selected concentration application and its associated application data.
This makes Teqwave F suitable for applications where maintaining a specific liquid concentration is critical to product quality or process performance.
Multivariable Liquid Analysis
In addition to concentration, Teqwave F can measure or determine several important process variables:
Liquid concentration
Acoustic density
Temperature
Sound velocity
Dispersion
The sound velocity measuring range is 600 to 2000 m/s, while acoustic density can be measured from 0.7 to 1.5 g/cm³.
This multivariable approach provides greater process transparency and can reduce the number of individual measuring points required in a process system.
Surface Acoustic Wave Technology
The surface acoustic wave measuring principle is a key feature of the Teqwave F.
The acoustic waveguide enables the sensor to detect even small changes in the liquid's acoustic properties. This provides sensitive and repeatable measurement of concentration and other liquid characteristics directly in the process.
Because measurement takes place in situ, operators can continuously monitor process conditions instead of relying on periodic laboratory sampling.
No Sampling Required
A major benefit of the Teqwave F is continuous product quality monitoring without manual sampling.
This can help operators:
Reduce laboratory sampling
Detect concentration changes earlier
Improve process control
Reduce operating costs
Monitor product quality continuously
Reduce the number of separate measuring points
For automated production processes, real-time concentration information can also be integrated into process control strategies.
Full-Bore Design Without Pressure Loss
The Teqwave F sensor features a full-bore design without additional pressure loss.
This is particularly useful for compact process skids and liquid circulation systems where maintaining the available process pressure is important.
The sensor is available in nominal diameters from:
DN 8 to DN 25 (3/8" to 1").
Compact Inline Installation
Teqwave F is designed as an inline measuring device and is particularly suited to compact process skids.
The sensor can be installed directly into the liquid pipeline, while the transmitter can be mounted conveniently using a DIN rail.
This makes the system suitable for equipment manufacturers integrating concentration measurement into packaged process equipment.
Temperature and Acoustic Density Measurement
The instrument provides accurate additional process information alongside concentration.
Maximum measurement errors include:
Acoustic density: ±0.01 g/cm³
Temperature: ±0.5 K
Sound velocity: ±2 m/s
The process temperature range is:
0 to +100 °C (32 to +212 °F)
with a maximum process pressure of:
16 bar at 20 °C.
Stainless Steel Sensor Construction
The wetted parts and sensor housing are manufactured from stainless steel 1.4571 (316 Ti).
The robust stainless steel construction makes Teqwave F suitable for continuous industrial liquid measurement applications.
The sensor has an IP68 degree of protection when the cable is plugged in, while the standard transmitter has IP40 protection.
Flexible Concentration Applications
Teqwave F uses an application-based concept, allowing the concentration measuring range to be matched to the specific liquid and production requirement. Applications can also be extended when measurement tasks change.
This makes the instrument particularly attractive for equipment manufacturers and process operators who may need to monitor different concentration ranges or liquids during the lifecycle of a system.
Easy Process Monitoring
The transmitter is available with either LED status indication or a 3.5-inch TFT color touch display, depending on configuration.
The display provides clear process and device status information, supporting straightforward operation and process monitoring.
The transmitter also provides integrated data storage for measured values for up to 7.5 years, helping users retain historical process information.
Communication and Outputs
Teqwave F supports several interfaces for process integration, including:
Modbus TCP
4–20 mA
0–10 V analog output
Relay output
It also provides two digital inputs for configuring display and output behavior during operation.
The standard power supply is:
24 V DC ±20%.
Typical Applications
The Endress+Hauser Teqwave F is suitable for:
Inline liquid concentration measurement
Continuous concentration monitoring
Liquid quality monitoring
Process skid measurement
Chemical concentration measurement
Industrial liquid analysis
Product quality control
Process monitoring
Concentration control
Multivariable liquid measurement
Equipment and skid manufacturing
Key Features
Ultrasonic concentration meter
Real-time inline liquid analysis
Continuous concentration measurement
Surface acoustic wave technology
Concentration range up to 0–100%, application dependent
Measures concentration, temperature, acoustic density and sound velocity
Acoustic density accuracy ±0.01 g/cm³
Temperature accuracy ±0.5 K
Sound velocity accuracy ±2 m/s
Sound velocity range 600–2000 m/s
Process temperature 0 to +100 °C
Process pressure up to 16 bar at 20 °C
Nominal diameter DN8–DN25
Full-bore design with no pressure loss
Stainless steel 316 Ti sensor
IP68 sensor protection
4–20 mA and Modbus TCP
TFT color touch display available
Integrated data storage up to 7.5 years
DIN-rail transmitter installation
Suitable for process skids and continuous liquid quality monitoring
