The LAS process turbidity sensor detects particles and turbidity in liquids. Installation is carried out using dead-space-free TH-Varinline measuring cells and is certified for applications in the food industry.
The LAS inline turbidity sensor operates on the principle of light absorption to measure suspended solids in liquids. A light beam passes through the process medium, while a detector positioned opposite the light source measures the transmitted NIR light intensity. The detected NIR signal varies according to the turbidity of the liquid.
The signal converter processes the measured light intensity and calculates the turbidity value. The sensor is compatible with the C1 signal converter or, alternatively, the C2 signal converter.
The LAS sensor combines low maintenance requirements with a wide measuring range, making it ideal for continuous operation and long service life. Thanks to its metal-fused sapphire windows and the food-grade TH Varivent measuring cell, no additional window seals are required. This hygienic design eliminates dead spaces and prevents contamination around the measuring windows, making the sensor especially suitable for demanding hygienic process applications.
| Nominal Sizes | DN 25 – DN 125 (TH Varivent measuring cells) |
| Process Temperature | Max. 140°C |
| Sensor Material | Stainless Steel 1.4404 |
| Window Material | Metaglas |
| Sealing Material | No additional window seal required |
| Measuring Range | Typically 0–100 EBC / 0–500 EBC |
| Reproducibility | ± 1% |
| Detector System | Silicon PIN photodiode |
| Measurement Wavelengths | 460–900 nm |
| Protection Class | IP65 / NEMA 4X |
| Cleaning | CIP compatible |
The LAS inline turbidity sensor operates on the principle of light absorption to measure suspended solids in liquids. A light beam passes through the process medium, while a detector positioned opposite the light source measures the transmitted NIR light intensity. The detected NIR signal varies according to the turbidity of the liquid.
The signal converter processes the measured light intensity and calculates the turbidity value. The sensor is compatible with the C1 signal converter or, alternatively, the C2 signal converter.
The LAS sensor combines low maintenance requirements with a wide measuring range, making it ideal for continuous operation and long service life. Thanks to its metal-fused sapphire windows and the food-grade TH Varivent measuring cell, no additional window seals are required. This hygienic design eliminates dead spaces and prevents contamination around the measuring windows, making the sensor especially suitable for demanding hygienic process applications.
| Nominal Sizes | DN 25 – DN 125 (TH Varivent measuring cells) |
| Process Temperature | Max. 140°C |
| Sensor Material | Stainless Steel 1.4404 |
| Window Material | Metaglas |
| Sealing Material | No additional window seal required |
| Measuring Range | Typically 0–100 EBC / 0–500 EBC |
| Reproducibility | ± 1% |
| Detector System | Silicon PIN photodiode |
| Measurement Wavelengths | 460–900 nm |
| Protection Class | IP65 / NEMA 4X |
| Cleaning | CIP compatible |
The Model C1 measurement amplifier can be used with most optical sensors. System programming and calibration are performed via a PC or laptop using menu-driven software. Calibration can be carried out using one or more samples. All settings and calibration values can be backed up externally on your PC’s hard drive.
The Model C2 measuring amplifier operates with optical sensors from the Chemtronic CSW, LAS, MoniSpec-C-A, TURBImat, or AP2 series. The system is suitable for measuring turbidity or color concentrations in liquids. For installation, the device is simply clipped onto a 35 mm DIN rail. Typical applications include the monitoring, control, and optimization of process workflows. The measuring amplifier is characterized by ease of use and high measurement reproducibility. The system’s continuous self-diagnosis ensures high measurement reliability. Measurement values can be processed via the 0/4–20 mA output.
Benefit from more than 40 years of experience, field-proven measurement technology and personal consultation. Together, we will find the right solution for your application. Visit our contact page and tell us about your project to receive a non-binding quotation.