Aalborg Series DFC Programmable Mass Flow Controller

Features:

• Digital and Analog modes operate simultaneously.
• Programmable Flow Configurations.
• Multi-Drop Capability of up to 256 units.
• Stores calibration data for up to 10 gases.
• Auto Tune function for optimum control response.
• Free PC Software with Gas Blending and Programmable Flow functions.
• Totalizer indicates total gas quantity.
• Alarm limits for high and low gas flow.
• Conversion factors for up to 256 gases.
• Self-Diagnostic Tests.

Aalborg Instruments Series DFC Programmable Mass Flow Controller with Digital Signal Processing. Microprocessor driven digital flow controller allow one to program, record, and analyze flow rates of various gases with a computer via an RS-485 interface. Optional RS-232 is available. Controller can be programmed for various control functions including flow set point, totalizer, stop totalizer, read totalizer, totalizer from preset flow, stop at preset total, auto zero, and more. The DFC is capable of storing primary calibration data for up to 10 gases. This feature allows the same DFC to be calibrated for multiple gases while maintaining the rated accuracy on each. Conversion factors for up to 256 gases are stored in the DFC. Conversion factors may be applied to any of the ten gas calibrations via digital interface commands. Aalborg free software allows controlling flow of the Gas mixture of up to eight different gases (for RS-485 bus with 8 DFC controllers) with preset values of the ratio in % for each channel. The flow rate of the Gas Mixture can be incremented or decremented within allowable range (based on Full Scale range of all DFC controllers in the mixture system) by changing the Gas Mixture set point settings. The software will automatically adjust individual set point for each device according to set ratios.

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