Process Photometers

Products for inline measurement of UV absorption and NIR / VIS absorption in all industries.

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Process Photometers

Endress+Hauser's Process Photometers are inline optical sensors for UV, VIS and NIR absorbance and turbidity. The system converts light attenuation or scatter into real-time values for concentration, color, purity, or solids within the pipe or flow cell. Hygienic flow assemblies pair with Liquiline CM44P to build compact measuring points.

They’re highly useful because measurements are reagent‑free, fast, and stable with low cross‑sensitivity. Liquiline CM44P links two photometers plus up to four Memosens sensors on one platform, adds Heartbeat diagnostics, and provides 0/4–20 mA, HART, PROFIBUS, Modbus, PROFINET, and EtherNet/IP for simple integration.

Typical applications include chromatography, fermentation/cell growth, filtration, phase separation, crystallization, condensate monitoring, and heat‑exchanger leak detection. Turbidity monitors filters, while UV/NIR absorbance tracks concentration, color, and purity.

Options span UV photometers for concentration/color and NIR/VIS sensors for suspended solids and phase detection, installed in hygienic flow cells/VARIVENT® assemblies; many variants are CIP/SIP‑capable and Ex‑area approved.

TriNova, your trusted Endress+Hauser Representative since 2002.