Calibration Procedures

Model GFC7000TA Carbon Dioxide Analyzer

7.5.2. Use of Zero/Span Valves with Remote Contact Closure

Contact closures for controlling calibration are located on the rear panel CONTROL IN connector. Instructions for setup and use of these contacts are found in Section 6.15.1.2. When the contacts are closed for at least 5 seconds, the instrument switches into zero or span mode. The remote calibration contact closures may be activated in any order. It is recommended that contact closures remain closed for at least 10 minutes to establish a reliable reading.

The instrument will stay in the selected mode for as long as the contacts remain closed. If calibration is enabled, the GFC 7000TA will re-calibrate when the contact is opened, then go into SAMPLE mode. If calibration is disabled, the instrument will return to SAMPLE mode, leaving the calibration unchanged.

7.6. Automatic Zero/Span Cal/Check (AutoCal)

The AutoCal system allows unattended periodic operation of the ZERO/SPAN valve options by using the GFC 7000TA’s internal time of day clock. AutoCal operates by executing SEQUENCES programmed by the user to initiate the various calibration modes of the analyzer and open and close valves appropriately. It is possible to program and run up to 3 separate sequences (SEQ1, SEQ2 and SEQ3). Each sequence can operate in one of 3 Modes, or be disabled.

 

Table 7-1: AUTOCAL Modes

 

 

MODE NAME

ACTION

DISABLED

Disables the Sequence

ZERO

Causes the Sequence to perform a zero calibration/check

ZERO-SPAN

Causes the Sequence to perform a zero and span concentration

 

calibration/check

SPAN

Causes the Sequence to perform a span concentration

 

calibration/check

For each mode there are seven parameters that control operational details of the SEQUENCE. They are:

Table 7-2: AutoCal ATTRIBUTE Setup Parameters

ATTRIBUTE NAME

ACTION

TIMER ENABLED

Turns on the Sequence timer

STARTING DATE

Sequence will operate after Starting Date

STARTING TIME

Time of day sequence will run

DELTA DAYS

Number of days to skip between each Seq. execution

DELTA TIME

Number of hours later each “Delta Days” Seq is to be run

DURATION

Number of minutes the sequence operates

CALIBRATE

Enable to do a calibration – Disable to do a cal check only

Teledyne Analytical Instruments

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Teledyne gfc 7000ta Automatic Zero/Span Cal/Check AutoCal, Use of Zero/Span Valves with Remote Contact Closure
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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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