Predicting Failures Using the Test Functions

Maintenance

Model GFC7000TA Carbon Dioxide Analyzer

8.2. Predicting Failures Using the Test Functions

The Test Functions can be used to predict failures by looking at how their values change over time. Initially it may be useful to compare the state of these Test Functions to the values recorded on the printed record of the final calibration performed on your instrument at the factory, p/n 04307. Table 9-3 can be used as a basis for taking action as these values change with time. The internal data acquisition system (DAS) is a convenient way to record and track these changes. Use APICOM to download and review this data from a remote location.

Table 8-3: Predictive uses for Test Functions

FUNCTION	CONDITION	BEHAVIOR	INTERPRETATION
STABILITY	Zero Cal	Increasing	Pneumatic Leaks – instrument & sample system
STABILITY	Zero Cal	Increasing	Detector deteriorating
			Detector deteriorating
			Source Aging
CO2 MEAS	Zero Cal	Decreasing	Detector deteriorating
			Optics getting dirty or contaminated
			Source Aging
		Increasing	Detector deteriorating
			Contaminated zero gas (H2O)
	Zero Cal		Source Aging
	Zero Cal		Detector deteriorating
			Detector deteriorating
		Decreasing	GFC Wheel Leaking
MR RATIO			Pneumatic Leaks
MR RATIO			Contaminated zero gas (CO2)
			Contaminated zero gas (CO2)
			Source Aging
		Increasing	Pneumatic Leaks – instrument & sample system
	Span Cal		Calibration system deteriorating
	Span Cal		Source Aging
			Source Aging
		Decreasing	GFC Wheel Leaking
			Calibration system deteriorating
		Increasing > 1”	Pneumatic Leak between sample inlet and Sample Cell
		Increasing > 1”	Change in sampling manifold
			Change in sampling manifold
PRES	Sample		Dirty particulate filter
PRES	Sample		Pneumatic obstruction between sample inlet and Sample
		Decreasing > 1”	Pneumatic obstruction between sample inlet and Sample
		Decreasing > 1”	Cell
			Cell
			Obstruction in sampling manifold
	Any, but with		Mechanical Connection between IR-Detector and Sample
PHT DRIVE	Bench Temp at	Increasing	Cell deteriorating
	48°C		IR-Photodetector deteriorating
OFFSET	Zero Cal	Increasing	See MR Ratio - Zero Cal Decreasing above
OFFSET	Zero Cal	Decreasing	See MR Ratio - Zero Cal Increasing above
		Decreasing	See MR Ratio - Zero Cal Increasing above

SLOPE	Span Cal	Increasing	See MR Ratio - Span Cal Decreasing above
SLOPE	Span Cal	Decreasing	See MR Ratio – Span Cal Increasing above
		Decreasing	See MR Ratio – Span Cal Increasing above

Teledyne Analytical Instruments

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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.

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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.

Teledyne gfc 7000ta operation manual Predicting Failures Using the Test Functions

Models: gfc 7000ta

Maintenance

Model GFC7000TA Carbon Dioxide Analyzer

8.2. Predicting Failures Using the Test Functions

Table 8-3: Predictive uses for Test Functions

PRES

PHT DRIVE

OFFSET

SLOPE

gfc 7000ta specifications