Teledyne 212R - Manuals

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Manual Teledyne 212R

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Page 2 - Teledyne Analytical Instruments; Thermal Conductivity Analyzer Model 212R

Teledyne Analytical Instruments 2 Thermal Conductivity Analyzer Model 212R All Rights Reserved. No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system, or translated into any other language or computerlanguage in whole or in part, in any form or by any means...

Page 5 - INTRODUCTION

Teledyne Analytical Instruments 5 Thermal Conductivity Analyzer Model 212R 1. INTRODUCTION 1.1 Method of Analysis. The Model 212R compares the thermal conductivity of a sample gas to that of a fixed composition reference gas and produces an electrical outputsignal that is calibrated to represent the...

Page 6 - signal of 0.25 microvolts will be sensed by the analyzer.

Teledyne Analytical Instruments 6 Thermal Conductivity Analyzer Model 212R 1.2 Sensitivity. Differences in thermal conductivity that produce a measuring bridge error signal of 0.25 microvolts will be sensed by the analyzer. 1.3 Stability. Internal variables, other than the sample gas, that could pro...

Page 7 - electrical output signal into readable information.

Teledyne Analytical Instruments 7 Thermal Conductivity Analyzer Model 212R panel, are located immediately behind a hinged front access door. The analyzeris suitable for installation in a sheltered non-hazardous area. A recording and/or indicating device will be required to transduce the electrical o...

Page 9 - vacuum tubes are firmly seated in their respective sockets.

Teledyne Analytical Instruments 9 Thermal Conductivity Analyzer Model 212R Run the cable attached to the transformer unit in through the access hole that is equipped with the cable clamp and terminate it as specified on theinterconnection diagram. 2.2.4. Completion and Inspection. After the electric...

Page 11 - Make sure to close the cylinder prior to bleeding the first stage

Teledyne Analytical Instruments 11 Thermal Conductivity Analyzer Model 212R 2.3.4 Installation of Cylinder Supplies. The reference and standard gas cylinders should be installed as close to the analyzer as possible. Each cylinder should be provided with a dual stage,metallic diaphragm, pressure redu...

Page 12 - STARTUP

Teledyne Analytical Instruments 12 Thermal Conductivity Analyzer Model 212R 2.3.7 Vent Lines. The sample path, reference path, and an integral bypass system vent from separate ports at the rear of the analyzer. Wherever possible, TAI recommendsthat the gases be permitted to vent directly to the atmo...

Page 13 - Turn the analyzer and recorder power switches to “ON”.

Teledyne Analytical Instruments 13 Thermal Conductivity Analyzer Model 212R 4. Determine what the sample pressure is and set the output pressure of the cylinder gas supplies to agree with the sample pressure. Thisprocedure, although not absolutely necessary, will minimize flowadjustments when the sa...

Page 14 - valve that is located downstream

Teledyne Analytical Instruments 14 Thermal Conductivity Analyzer Model 212R After the analyzer stabilizes adjust the "ZERO" control until the recorder indicates the impurity concentration of the zero gas composition. Be sure thatthe range switch is on position #1 and that the sample path flo...

Page 15 - NOTE: TAI recommends that some bypass flow be permitted

Teledyne Analytical Instruments 15 Thermal Conductivity Analyzer Model 212R virtually instantaneous. Recovery is a function of how long it takes to purge thesampling system upstream from the cell. Accelerating the sample path flowratewill speed the response. NOTE: TAI recommends that some bypass flo...

Page 17 - Due to the delicate balance of the thermal conductivity cell

Teledyne Analytical Instruments 17 Thermal Conductivity Analyzer Model 212R Due to the delicate balance of the thermal conductivity cell employed in the analyzer, exposure to the atmosphere in an uncontrolled temperature environ-ment is undesirable. After extended shutdown periods many days of opera...

Page 18 - Loss of Zero Control.

Teledyne Analytical Instruments 18 Thermal Conductivity Analyzer Model 212R Check to see that both the analyzer and recorder are being furnished electrical power. Check to see that the analyzer and recorder fuses are intact.Check all electrical connections outside of the analyzer. 6.1.2 Sampling Sys...

Page 21 - ) Sample gas with a moisture content of 10 ppm or greater. Again, the

Teledyne Analytical Instruments 21 Thermal Conductivity Analyzer Model 212R or incorrect instrument installation. The following conditions can produce anerratic output from the analyzer: 1) Installation in an area that is subject to large changes in ambient temperature, direct sunlight, drafts from ...

Page 22 - CAUTION: Do not insert the tubing along the edges of the

Teledyne Analytical Instruments 22 Thermal Conductivity Analyzer Model 212R Check as previously stated, the analyzers entire sampling system has been checked under pressure with a leak detector. However, if the external systemchecks out and the instrument is displaying a large diurnal or uni- direct...

Page 23 - Unless competent electronic technicians are available, TAI

Teledyne Analytical Instruments 23 Thermal Conductivity Analyzer Model 212R tom must be evident with zero gas flowing. If this symptom is displayed onlywhen the sample is flowing, the problem is related to one (or more) of the five(5) points outlined in section 7.3. To check the temperature control ...

Page 24 - CAUTION: Do not touch the thermistor probe with the iron. The

Teledyne Analytical Instruments 24 Thermal Conductivity Analyzer Model 212R CAUTION: Do not touch the thermistor probe with the iron. The end of the probe is tied and taped to the sample tubingbelow the cell cover. If the meter reading suddenlydrops to zero, remove the soldering iron immediately.Aft...

Page 26 - NOTE: Cylinder and sample stream pressure settings must

Teledyne Analytical Instruments 26 Thermal Conductivity Analyzer Model 212R 7.4.3 Span Gas. Containing an equivalent impurity. Again, the span gas must be procured from a supplier who will certify its composition. The range switch must be inrange 3 when the span gas is introduced. IMPORTANT: The acc...

Page 27 - Orders should be sent to:; Drawing List; Orders for replacement parts should include the art

Teledyne Analytical Instruments 27 Thermal Conductivity Analyzer Model 212R Orders should be sent to: TELEDYNE Analytical Instruments 16830 Chestnut StreetCity of Industry, CA 91749-1580 Phone (626) 934-1500, Fax (626) 961-2538TWX (910) 584-1887 TDYANYL COID Web: www.teledyne-ai.com or your local re...

Page 28 - APPENDIX

Teledyne Analytical Instruments 28 Thermal Conductivity Analyzer Model 212R APPENDIX Specifications : Ranges: Three decade ranges: Minimum Full scale(ppm) 20 ppm Hydrogen balance Argon 25 ppm Hydrogen balance Nitrogen, Air 100 ppm Nitrogen balance Argon, Helium100 ppm Helium balance Air150 ppm Nitro...