Polestar’s DSP Series optical process monitors include automatic temperature and pressure compensation as well as a proprietary AGC (automatic gain control) to optimize readings and maximize sensor lifespan. Polestar’s DSP optical process monitors are suitable for use in a range of environments, including laboratories, pilot and production plants, as well as outdoors. Applications enabled by the robust, non-electrode design include the following: pharmaceutical and bioprocessing; regenerative medicine; food, beverage, and brewing; and environmental monitoring.
Polestar’s DSP optical process monitors utilize either fluorescence lifetime (O2) or ratiometric fluorescence analysis (pH, CO2) to measure the parameter of interest. Because they are inherently self-referencing, both of these detection approaches eliminate the potential for measurement error arising from changes in sample turbidity, refractive index, viscosity, or color. This ensures stable, drift-free calibration and hence reliable measurements throughout the lifespan of a sensing element.
Polestar’s sensors, whether incorporated into stainless steel probe configurations, welded onto disposable bioprocess bags, or applied to flow cells or puncture probes, are solid-state, with no fragile membranes or filling solutions. Unlike electrodes, they exhibit no electromagnetic emissions and can be stored dry.
Pre-set calibration factors can be uploaded using a conventional USB flash drive, which can also be used for local storage of process run data. All monitors are designed for easy installation and operation. They feature a large, easy-to-read, four-line VFD display and intuitive, menu-driven software. All sensing elements are shipped pre-calibrated. Users simply upload the calibration constants from a USB flash drive.
Polestar offers the only 3-in-1 monitoring system for measuring O2, pH, and CO2 simultaneously.