Troubleshooting

Model GFC7000TA Carbon Dioxide Analyzer

If the sample pressure is reading normal but the sample flow is reading low then it is likely that the pump diaphragm is worn or there is an obstruction downstream of the flow sensor.

10.2.2.5. Actual Flow Does Not Match Displayed Flow

If the actual flow measured does not match the displayed flow, but is within the limits of 720-880 cc/min, adjust the calibration of the flow measurement as described in Section 6.9.8.

10.2.2.6. Sample Pump

The sample pump should start immediately after the front panel power switch is turned ON. With the Sample Inlet plugged, the test function PRES should read about 10”-Hg for a pump in good condition. Readings above 10” Hg indicate that the pump needs rebuilding. If the test function SAMP FL is greater than 10 cm3/min there is a leak in the pneumatic lines.

10.2.3. Poor or Stopped Flow of Purge Gas

If sufficient purge gas is not supplied to the GFC wheel housing, cyclical fluctuations in readings at zero or low CO2 concentrations, such as < 100 ppm, may occur. These fluctuations are the result of changes in the CO2 concentration of the ambient atmosphere throughout the course of the day and night. In isolated areas with relatively few people working nearby the ambient CO2 concentration will fall during the day and rise during the night as rate of photosynthesis of the plants in the surrounding area decreases and increases. In a lab environment with a relatively high human occupancy the ambient CO2 concentration will increase during those parts of the day when the highest number of workers are present. If the GFC wheel housing is allowed to fill with ambient air, these natural, diurnal fluctuations might be detected by the instrument and cause it’s in its calculation of the CO2 concentration of the sample gas to drift.

Another possible symptom of poor or stopped purge gas flow would be the inability to measure zero concentrations accurately at the end of a work day on a system that was calibrated at the beginning of a workday. Although this could also be due to local fluctuations in ambient CO2 concentration during the day.

Teledyne Analytical Instruments

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Teledyne gfc 7000ta Poor or Stopped Flow of Purge Gas, Actual Flow Does Not Match Displayed Flow, Sample Pump
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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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