Theory of Operation

Model GFC7000TA Carbon Dioxide Analyzer

Box Temperature Sensor

A thermistor is attached to the motherboard. It measures the analyzer’s inside temperature. This information is stored by the CPU and can be viewed by the user for troubleshooting purposes via the front panel display (See Section 11.1.2).

9.3.6.4. Analog Outputs

The analyzer comes equipped with four analog outputs: A1, A2, A3 and A4. . In its standard configuration, the analyzer comes with all four of these channels set up to output a DC voltage. However, 4-20mA current loop drivers can be purchased for the first three of these outputs: A2, A2 & A3.

A2 and A1 Output

The first two, A2 and A1 are normally set up to operate in parallel so that the same data can be sent to two different recording devices. While the names imply that one should be used for sending data to a chart recorder and the other for interfacing with a data logger, either can be used for both applications.

Both of these channels output a signal that is proportional to the CO2 concentration of the sample gas. The A1 and A2 outputs can be slaved together or set up to operated independently. A variety of scaling factors are available, See Section 6.13.4 for information on setting the range type and scaling factors for these output channels.

A3 Output

Analog output channel A3 is only active when the O2 sensor option is installed in the GFC 7000TA. In this case, the currently measured O2 concentration is output.

Test Function Output

The fourth analog output, labeled A4 is special. It can be set by the user (See Section 6.9.9) to carry the current signal level of any one of the parameters accessible through the SETUP MORE DIAG TEST CHAN OUTPUT submenu (See Section 6.13.9) of the unit’s software.

Output Loop-back

All four analog outputs are connected back to the A/D converter through a Loop-back circuit. This permits the voltage outputs to be calibrated by the CPU without need for any additional tools or fixtures.

9.3.6.5. Internal Digital I/O

This channel is used to communicate digital status and control signals about the operation of key components of the Optical Bench. The CPU sends signals to the synch/demod board that initiate the ELECTRICAL TEST and DARK CALIBRATION procedures. Likewise, the synch/demod board uses this interface to send the SYNC warning signal to the CPU (See Sections 6.9.5, 6.9.6 and 11.1.1).

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Teledyne gfc 7000ta operation manual Analog Outputs, Internal Digital I/O
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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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