Theory of Operation

Model GFC7000TA Carbon Dioxide Analyzer

9.3.6.6. External Digital I/O

This External Digital I/O performs two functions: status outputs and control inputs.

Status Outputs

Logic-Level voltages are output through an optically isolated 8-pin connector located on the rear panel of the analyzer. These outputs convey good/bad and on/off information about certain analyzer conditions. They can be used to interface with certain types of programmable devices (See Section 6.13.1.1).

Control Inputs

By applying +5VDC power supplied from an external source such as a PLC or Data logger (See Section 6.13.1.2), Zero and Span calibrations can be initiated by contact closures on the rear panel.

9.3.7. I2C Data Bus

An I2C data bus is used to communicate data and commands between the CPU and the touchscreen/display interface and the relay board. I2C is a two-wire, clocked, digital serial I/O bus that is used widely in commercial and consumer electronic systems. A transceiver on the motherboard converts data and control signals from the PC-104 bus to I2C. The data is then fed to the touchscreen/display interface and finally onto the relay board.

Interface circuits on the touchscreen/display interface and relay boards convert the I2C data to parallel inputs and outputs. An additional, interrupt line from the touchscreen to the motherboard allows the CPU to recognize and service button presses on the touchscreen.

Power up Circuit

This circuit monitors the +5V power supply during start-up and sets the Analog outputs, external digital I/O ports, and I2C circuitry to specific values until the CPU boots and the instrument software can establish control.

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Teledyne gfc 7000ta operation manual 7. I2C Data Bus, Status Outputs, Control Inputs, Power up Circuit
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gfc 7000ta specifications

The Teledyne GFC 7000TA is a cutting-edge, high-performance gas flow calibrator designed for both laboratory and field applications. This instrument is renowned for its accuracy, versatility, and reliability, making it an ideal choice for various industries, including aerospace, environmental monitoring, and manufacturing.

One of the standout features of the GFC 7000TA is its advanced measurement technology. It utilizes state-of-the-art thermal mass flow meters, which allow for precise fluid measurement across a wide range of flow rates. This technology ensures highly accurate readings, which are essential for applications requiring stringent compliance with regulatory standards.

The GFC 7000TA is capable of accommodating various types of gases, making it particularly versatile. Users can calibrate flow for gases such as air, nitrogen, or carbon dioxide, providing flexibility in a multitude of applications. The device also supports dual-channel capabilities, allowing simultaneous measurement and calibration of two different gas types, enhancing productivity and efficiency in processes.

Another notable characteristic of the GFC 7000TA is its user-friendly interface. Equipped with a high-resolution touchscreen display, the device offers intuitive navigation and data visualization. Users can easily set parameters, view real-time measurements, and generate printed reports. This interface reduces the learning curve for new operators, allowing organizations to implement the GFC 7000TA with minimal training.

In addition to its advanced measuring capabilities, the GFC 7000TA features a robust design for durability in harsh environments. The instrument is compliant with various international standards, ensuring its reliability and performance in various conditions. Its portable form factor makes it convenient for fieldwork, while the rugged construction provides peace of mind for users working in demanding settings.

The GFC 7000TA also incorporates modern connectivity options. With built-in USB and Ethernet ports, users can easily integrate the device into their existing systems for data logging and remote monitoring. This connectivity feature enables real-time data access and enhances the potential for analysis and optimization of gas flow systems.

In summary, the Teledyne GFC 7000TA is a high-performance gas flow calibrator characterized by its advanced thermal mass flow measurement technology, versatility in accommodating various gases, user-friendly interface, and robust design. With its modern connectivity features, this instrument stands out as a vital tool for professionals seeking precision and reliability in gas flow applications.
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