Thermal Conductivity Analyzer

Model 212R

 

 

 

 

tommustbeevidentwithzerogasflowing. Ifthissymptomisdisplayedonly when the sample is flowing, the problem is related to one (or more) of the five

(5) points outlined in section 7.3.

Tocheckthetemperaturecontrolcircuit,usethefollowingprocedures:

1)With the power switch ON, open the control panel door and check to see if the fan is running. If it is not, check the left hand fuse. This fuse protects the entire temperature control circuit (see schematic). If the fuse will not hold, a short circuit is indicated. Disconnect the printed circuit card and replace the fuse. If the fuse holds (as indicated by the fan running) the printed circuit card will have to be replaced.

NOTE:Unlesscompetentelectronictechniciansareavailable,TAI recommends that a replacement printed circuit card be ordered and the existing board returned to the factory for repair. Repair charges (out of warrantee) will be based on time and material. A schematic of the proportional temperature control card is included among the drawings at the rear of the manual.

2)If the fuse will not hold with the board removed, a short is indi cated in the fan, the heater resistors, or the interconnecting

wiring. With the board removed, check wiring and components for short circuits.

3)If the fan is running, connect an AC volt meter across anyone of the heater resistors on the fan assembly (the meter should be set to read 50 VAC). In a properly operating circuit, the meter should read approximately 47 volts (heater control full on) as the control panel is open and the thermistor should be demanding maximum heater voltage. If no voltage is present, either the circuit card or the thermistor probe is faulty. Isolate the problem by first disconnecting the circuit board from its socket and with

an ohmmeter check between terminals 5 and 6 of terminal strip TS2. If a reading is obtained (disregard actual resistance) the thermistor is intact and a new circuit card will be necessary. If no reading is obtained, a new probe assembly will be required.

4)If approximately 47 VAC is measured across the heater resis- tors, a runaway, or correct, circuit is indicated. To determine which is the case, hold a soldering iron in close proximity (1/2") to the end of the thermistor probe and observe the meter.

Teledyne Analytical Instruments

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Teledyne 212R instruction manual Thermal Conductivity Analyzer
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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.
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