For process control, yes: you operate based on the current measured value instead of the last sample. As an analytical reference, titration still has its place. Some users continue to use it to check and document the inline value at longer intervals.

No. What is measured is the speed of sound, not density. This makes a difference especially with acetic acid: the density of the aqueous mixture reaches a maximum in the upper concentration range, so one density value can correspond to two different concentrations. The acoustic variable behaves differently and is also less sensitive to gas bubbles. If you work with density values in your plant, we can convert the measured value into density and output it that way if needed.

Significantly more tolerant than density- or refractometer-based methods. A moderate amount of bubbles does not noticeably affect the measured value. However, there is a limit: if the gas content rises further, the evaluation becomes unreliable. The sensor detects this condition to a certain extent and outputs it as a fault signal. If there is consistently a lot of gas present, choosing the installation point also helps, for example at a well-flooded location with upward flow.

Nearly water-free acetic acid solidifies at around 16.7 °C, so lines and vessels are heat-traced accordingly. The sensor can be installed in such heated sections. Whether the desired resolution can be achieved in the high-concentration range is something we verify based on your data. In that exact range, the curve profile determines the result.

For diluted, cold acid, stainless steel is usually sufficient. Hot and highly concentrated acetic acid is more demanding; here, Hastelloy or coated versions with PFA, ETFE, or Halar are used. Tell us the concentration, temperature, and accompanying substances, and we will suggest the right combination.

Concentrated acetic acid is flammable, with a flash point of about 39 °C. For this reason, tank farms and heated plant sections often have hazardous area classifications. Suitable sensor versions are available for explosion-protection requirements, along with a wide selection of materials. Tell us the classification of your measuring point, and we will suggest the appropriate version.

That depends on the concentration range, temperature spread, and composition. In a tightly controlled target band, the achievable resolution is high; over a very wide range, it is lower. We provide a reliable specification for your case instead of promising a general number.

Often solvable. As long as the accompanying substances remain within known limits, a product data set can be stored for the specific mixture, for example acetic acid with acetate, anhydride, or residual solvent. If the composition varies greatly, we clarify feasibility in advance using a sample in the lab.

Via 4–20 mA as well as Modbus, Profibus, Profinet, or EtherNet/IP. Limit values for concentration and disturbance variables can also be assigned to digital outputs and used directly for dosing valves or switching functions.

Usually not at all, until a batch stands out. A slightly too weak dilution may initially go unnoticed in the process, but it costs effectiveness, yield, or specification compliance. Only a continuous trend shows whether the concentration was truly stable or drifted between two samples.

None during operation. There are no moving parts, no seals in the measuring path, and no optical window that would need cleaning. The factory calibration remains stable for years, and regular recalibration is not strictly necessary.