Thermal Conductivity Analyzer

Model 212R

 

 

 

 

Checkaspreviouslystated,theanalyzersentiresamplingsystemhasbeen checked under pressure with a leak detector. However, if the external system checksoutandtheinstrumentisdisplayingalargediurnaloruni-directionaldrift, the interior sampling system should be checked for leaks. Do not open the analyzerinnerdoor. Usethefollowingprocedure:

1)Acquire a source of cylinder helium and through a dual stage regulator connect it to a length of 1/8" tubing.

2)Open the outer door of the analyzer and insert the tubing be- tween the edge of the sample control panel and the outer case.

CAUTION: Do not insert the tubing along the edges of the larger swing-down control panel as there is danger of obstructing the fan or short circuiting the electronics. The end of the tubing should be shaped into a curve so that the foam lining is not overly disturbed and the tubing should only be inserted a couple of inches into the interior.

3)Start the helium flowing. Keep the flowrate low so as not to disturb the temperature equilibrium of the analyzer interior.

4)Observe the recorder. If any leaks are present in the interior sampling system, the recorder will be driven off scale in one direction or the other. NOTE: The analyzer should be on Range #1 and the zero control adjusted so that the recorder is reading mid-scale. The direction the recorder indication moves is a function of the type of zero and reference gas being used (which varies per application) and which path of the sampling system (sample or reference) the leak is located in. If the recorder responds to an atmosphere of helium within the analyzer, all connections inside the analyzer must be checked.

6.4.2 Temperature Control Check.

The interior temperature of the analyzer is regulated to a constant value to within .002 degrees centigrade. The actual temperature control pointvaries slightly per application and is a function of the components used in the propor- tionaltemperaturecontrolcircuit.

If the recorder is displaying a large diurnal recording that is related to the time of day in termsof the differential between dayand night ambient tempera- ture,troubleinthetemperaturecontrolcircuitryisindicated. Again,thissymp-

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Teledyne Analytical Instruments

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Teledyne 212R instruction manual Temperature Control Check

212R specifications

Teledyne 212R is a state-of-the-art underwater acoustic modem designed for robust communication in various marine environments. This advanced device is based on established principles of underwater acoustics and modern digital signal processing technologies, making it an optimal choice for applications ranging from oceanography to underwater robotics.

One of the standout features of the Teledyne 212R is its high data transmission capabilities, allowing for reliable communication at distances of up to several kilometers depending on environmental conditions. The modem supports various data rates, enabling flexible adaptation to the needs of different applications. This versatility makes it suitable for both low-bandwidth telemetry and high-data applications, such as video streaming from underwater drones.

The Teledyne 212R employs advanced modulation schemes that enhance its performance in challenging conditions. These modulation techniques, combined with sophisticated error correction algorithms, ensure the integrity of data transmission even in noisy environments. This resilience is crucial as it enables the modem to maintain communication in the presence of marine life, background noise, and varying temperatures.

Another remarkable characteristic of the Teledyne 212R is its compact and rugged design. Built to withstand harsh marine conditions, the modem is encapsulated in a pressure-resistant housing, making it suitable for deep-sea operations. Its durability ensures longevity and reliability, reducing the need for frequent maintenance or replacement, which can be costly in remote underwater settings.

Moreover, the modem features an array of integrated sensors that allow for real-time environmental monitoring. This capability can be pivotal for research organizations studying marine ecosystems or for oil and gas companies conducting underwater surveys. The ability to collect and transmit environmental data alongside operational data streamlines data-gathering efforts.

Ease of integration is another key aspect of the Teledyne 212R. It is compatible with a multitude of existing marine technologies and communication protocols, allowing for seamless deployment in diverse systems. This adaptability is essential for users requiring collaborative operations across multiple platforms, such as Autonomous Underwater Vehicles (AUVs) and remotely operated vehicles (ROVs).

In summary, the Teledyne 212R combines high-performance data transmission, advanced modulation techniques, rugged design, and environmental monitoring capabilities. This makes it an essential tool for anyone engaged in underwater research, exploration, or resource management, establishing it as a go-to choice in the field of underwater communication.