Inline analytical technology for • etching baths • sulfuric acid / oleum • methanol / formaldehyde

Increase quality, save resources: LiquiSonic®. With high-quality, innovative sensor technology. Robust, precise, user-friendly. LiquiSonic® LiquiSonic® is an inline analytical system for determining the concentration in liquids directly in the production process. The analyzer is also used for phase separation and reaction monitoring. Sensor installation within the product stream means an extremely fast measurement that responds immediately to process changes. User benefits include: • optimal plant control through online and real-time information about process states • maximized process efficiency...

Combination of sonic velocity and conductivity 5 Etching and pickling baths 6 Combination of sonic velocity and density 7 Oleum and sulfuric acid 8 Controller and field housing 12

Measuring method Measuring principle known change of the physical value according to an analytical mathematic relation description. The measuring system LiquiSonic® 40 enables the concentration measurement in 3-component mixtures. A 3-component mixture usually means a liquid of two substances in a carrier fluid or solvent. The measuring principle is based on the fact that the concentration changing of individual components of a liquid have different effects on certain physical values. For example, these physical values include sound velocity, density, pH, refractive index, or other known variables....

Combination of sonic velocity and conductivity A common combination of physical values is the use of sonic velocity and conductivity: Within seconds the controller 40 calculates from the physical measuring values of sonic velocity and conductivity, the temperature compensated concentrations. The data can be passed to process control systems or PCs via several freely scalable analog or relay outputs, as well as various field bus interfaces. • The sensors are installed directly into the pipe. Thus, there is no need of bypass solutions. • The sensors are maintenance-free. By the robust design without...

Concerning the process analysis in gas scrubbers there are different measuring points, where LiquiSonic® 40 systems have been used successfully. The analyzer makes it possible to determine inline and online the concentration of the washing solution and the salt separately. So the washing liquid can be re-dosed targeted and the liquid concentration is kept within the maximum absorption. The costs for lower dosage, i.e. insufficient cleaning, as well as for overdose, i.e. excessive use of material, are avoided. LiquiSonic® is successfully used in: • chlorine gas scrubber (NaOH/NaCl (+NaOCl) in...

Combination of sonic velocity and density The combination of sonic velocity and density measurement is usually applied, if the physical dependencies are better than those combining sonic velocity and conductivity. In this case, density meters have proven working on the principle of an oscillating tube. Oscillating tubes are typically available to DN25 and therefore are often installed in a bypass. Alternatively, in few cases the density measurement using Coriolis mass flowmeter can be used. Since with this method the density value is only a „by-product“, the measuring accuracies are significantly...

Oleum and sulfuric acid By mixing sulfuric acid with oleum, any concentrations of highly concentrated sulfuric acid can be set. The setting requires the continuous inline monitoring of the concentration. Furthermore, oleum poses a hazard potential and must not be produced under certain absorption processes. The warning limits integrated in the LiquiSonic® analyzer signal this prematurely and send a warning to the process control system via the peripheral. The formaldehyde is produced from methanol in the socalled silver process. It means, methanol gas is mixed with air and passed through silver...

[isopropyl alcohol Measuring method

LiquiSonic® System LiquiSonic® 40 The LiquiSonic® 40 system consists of one sensor and one controller. The maximum distance between sensor and controller is 1,000 m. special LiquiSonic® high power technology ensures stable measurement results, even at high portions of gas bubbles and strong signal attenuation by process liquid. The ultrasonic sensor includes the ultrasonic measuring path and the highly precise temperature detection. The liquid-wetted parts of the sensor are made of stainless steel DIN 1.4571 as standard. In chemical aggressive liquids the sensor is made of special non-corrosive...

The process data is updated every second. The displayed value can be adjusted to internal reference values. If the measuring values exceed or fall below the threshold, the display shows an alarm message and a signal will be sent immediately. The data can be transmitted in several defined analog or digital forms or through different fieldbus interfaces to communicate with process control systems or computers. The controller features an integrated data logger which can store up to 2 GB of process information with up to 32 (optional 99) data sets for different process liquids. For processing on...

Accessories Controller and field housing The controllers are designed for rack-mounted systems. It is alternatively available with a 19“ housing 4RU. In order to be able to mount controllers into the field, two variants of field housings made of plastic or stainless steel can be delivered, which meet on-site conditions in an optimal way. 19“- housing 3RU material: anodized aluminum dimensions: 482.9 (19“) x 177 (4RU) mm application: rack-mounted system Wall mount housing (stainless steel) material: stainless steel DIN 1.4301 (AISI-304) protection degree: IP66 (NEMA 4X) dimensions: 430 x 300 x...

The LiquiSonic® controller has an Ethernet interface, that makes the integration into the corporate network possible. After entering the user name and password, the access to the stored logs is possible. Integrating the controller into the network enables remote control, view of status information, transfer of product data sets or calibration of products. The Network integration includes • command line (TELNET), file transfer (FTP), • e-mail notification (SMTP Via web server, a safe remote access to the LiquiSonic® controller within a network is possible without installing special application...