The Pyxis FR-300-PLUS is a magnetic coupling motorized brush flow assembly that provides an inline mechanical cleaning of the ST-765SS Series bare gold electrode enabling sensor accuracy in challenging industrial cooling and process waters. This unique device enhances the convective mass transport of the oxidizer or reducing agent analyte to the sensor electrode surface eliminating the need for precision flow control commonly required for other amperometric sensors on the market. The FR-300-PLUS also provides supplemental deactivation protection of the bare gold electrode for long life, stability, and precision accuracy in extremely challenging waters. The FR-300-PLUS is also designed to be utilized with a wide variety of alternative Pyxis inline sensors for a broad range of measurement (see data sheet for list).
The FR-300-PLUS contains a ‘chemical injection port’ in the assembly housing allowing for the optional injection of cleaning agents at the brush head for extremely challenging industrial waters containing fats, oils and grease. This port may also be used for the addition of potassium iodide for measurement of “True Total Chlorine”. The FR-300-PLUS may be operated at a broad range of regulated sample flow from 200 to 800 ml per minute with an inlet pressure of <30 psi. The FR-300-PLUS outlet flow line should be diverted to drain or returned to an atmospheric tank/sump within the process itself for reuse.
The FR-300-PLUS comes equipped with a magnetically coupled brush mounted in the liquid end of the flow reservoir. Operational life of the brush is typically 1+ year of service, however this is application dependent based on water quality. The brush is held in place via magnetic coupling to the motor shaft for rapid tool-free removal and replacement.
The FR-300-PLUS requires 24 VDC power supply at approximately 2.5 watts and can be directly connected to the OEM controller or may be powered by an optional outlet power supply adapter (purchased separately).
Pyxis Lab has developed a wide variety of pre-assembled analyzer panels incorporating the proprietary ST-765SS series sensor in combination with FR-300-PLUS self-brushing flow assembly and the UC-Series of Pyxis display and data logging terminals. Alternatively, the ST-765SS Series sensors and FR-300-PLUS self-brushing flow assembly may be utilized with OEM controllers, PLCs and DCS networks to providing a higher level of control for system chemistry applications while incorporating the unique Pyxis bare-gold sensor technology.
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