Thermal Conductivity Analyzer - Teledyne …

1 ITeledyne analytical InstrumentsThermal Conductivity AnalyzerOPERATING INSTRUCTIONS FORM odel 2020 Thermal Conductivity AnalyzerHIGHLY TOXIC AND OR FLAMMABLE LIQUIDS OR GASES MAY BE PRESENT IN THIS PROTECTIVE EQUIPMENT MAY BE REQUIRED WHEN SERVICING THIS VOLTAGES EXIST ON CERTAIN COMPONENTS INTERNALLY WHICH MAY PERSISTFOR A TIME EVEN AFTER THE POWER IS TURNED OFF AND AUTHORIZED PERSONNEL SHOULD CONDUCT MAINTENANCE AND/OR SERVICING. BEFORECONDUCTING ANY MAINTENANCE OR SERVICING CONSULT WITH AUTHORIZED M6767708/06/1999 ECO # 99-0323 Teledyne analytical InstrumentsiiModel 2020 Copyright 1999 Teledyne analytical InstrumentsAll Rights Reserved. No part of this manual may be reproduced, transmitted, tran-scribed, 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, whether it be electronic,mechanical, magnetic, optical, manual, or otherwise, without the prior written consent ofTeledyne analytical Instruments, 16830 Chestnut Street, City of Industry, CA equipment is sold subject to the mutual agreement that it is warranted by us freefrom defects of material and of construction, and that our liability shall be limited toreplacing or repairing at our factory (without charge, except for transportation), or atcustomer plant at our option, any material or construction in which defects becomeapparent within one year from the date of shipment, except in cases where quotations oracknowledgments provide for a shorter period.

2 Components manufactured by others bearthe warranty of their manufacturer. This warranty does not cover defects caused by wear,accident, misuse, neglect or repairs other than those performed by Teledyne or an autho-rized service center. We assume no liability for direct or indirect damages of any kind andthe purchaser by the acceptance of the equipment will assume all liability for any damagewhich may result from its use or reserve the right to employ any suitable material in the manufacture of ourapparatus, and to make any alterations in the dimensions, shape or weight of any parts, inso far as such alterations do not adversely affect our NoticeThis instrument provides measurement readings to its user, and serves as a tool bywhich valuable data can be gathered. The information provided by the instrument mayassist the user in eliminating potential hazards caused by his process; however, it isessential that all personnel involved in the use of the instrument or its interface, with theprocess being measured, be properly trained in the process itself, as well as all instrumenta-tion related to safety of personnel is ultimately the responsibility of those who control processconditions.

3 While this instrument may be able to provide early warning of imminent danger,it has no control over process conditions, and it can be misused. In particular, any alarm orcontrol systems installed must be tested and understood, both as to how they operate andas to how they can be defeated. Any safeguards required such as locks, labels, or redun-dancy, must be provided by the user or specifically requested of Teledyne at the time theorder is , the purchaser must be aware of the hazardous process conditions. Thepurchaser is responsible for the training of personnel, for providing hazard warningmethods and instrumentation per the appropriate standards, and for ensuring that hazardwarning devices and instrumentation are maintained and operated analytical Instruments, the manufacturer of this instrument, cannotaccept responsibility for conditions beyond its knowledge and control. No statementexpressed or implied by this document or any information disseminated by the manufactur-er or its agents, is to be construed as a warranty of adequate safety control under theuser s process analytical InstrumentsThermal Conductivity AnalyzerSpecific Model InformationThe instrument for which this manual was supplied may incorporate one or moreoptions not supplied in the standard instrument.

4 Commonly available options are listedbelow, with check boxes. Any that are incorporated in the instrument for which thismanual is supplied are indicated by a check mark in the Serial Number: _____Standard Options Included in the Instrument with the Above Serial Number:q 2020L:Gas selector panel consisting of sample/ref flow meters withstainless steel control valves, tubing and 2020C:Auto Calibration valves (zero/span) built-in gas selector paneland control valves are electronically controlled to providesynchronization with the Analyzer s 2020R:Sealed reference TC cell (application dependent, contactfactory).Special Options:q 2020F:Groups C & D Flame Arrestors with Flow Control Gas 2020H:Stainless Cell Block with Gold 2020O:Groups B Flame Arrestors with Flow Control Gas 2020P:Groups C & D Flame Arrestors with Cal Valves and FlowControl Gas 2020Q:Groups B Flame Arrestors with Cal Valves and Flow ControlGas analytical InstrumentsivModel 2020 Table of Contents1 Overview.

5 Typical Applications .. Main Features of the Analyzer .. Model Designations .. Operator Interface (Front Panel) .. UP/DOWN Switch .. ESCAPE/ENTER Switch .. Recognizing Difference Between LCD & VFD .. Equipment Interface (Rear Panel) .. Gas Connections .. 1-62 Operational Introduction .. Sensor Theory .. Sensor Configuration .. Calibration .. Effects of Flowrate and Gas Density .. Measurement Results .. Electronics and Signal Processing .. Temperature Control .. 2-53 Unpacking the Analyzer .. Mounting the Analyzer .. Electrical Connections (Rear Panel) .. Primary Input Power .. Fuse Installation .. Voltage Selections .. Analog Outputs .. Alarm Relays .. Digital Remote Cal Inputs .. Range ID Relays .. Network I/O .. RS-232 Port .. Remote Probe Connector .. Gas Connections .. Sample System Design.

6 Pressure and Flow Rate Regulation .. 3-14vTeledyne analytical InstrumentsThermal Conductivity VENT Exhaust .. SAMPLE Gas .. REFERENCE Gas .. ZERO Gas .. SPAN Gas .. Testing the System .. 3-164 Introduction .. Using the Data Entry and Function Buttons .. Mode/Function Selection .. Analysis Mode .. Setup Mode .. Data Entry .. ENTER .. Escape .. The System Function .. Setting the Display .. Setting up an Auto-Cal .. Password Protection .. Entering the Password .. Installing or Changing the Password .. Logging Out .. System Self-Diagnostic Test .. The Model Screen .. Checking Linearity with Algorithm .. The Zero and Span Functions .. Zero Cal .. Auto Mode Zeroing .. Manual Mode Zeroing .. Cell Failure .. Span Cal .. Auto Mode Spanning .. Manual Mode Spanning .. The Alarms Function.

7 The Range Select Function .. Manual (Select/Define Range) Screen .. Auto (Single Application) Screen .. Precautions .. The Analyze Function .. Programming .. 4-23 Teledyne analytical InstrumentsviModel The Set Application Screen .. The Curve Algorithm Screen .. Checking the Linearization .. Manual Mode Linearization .. Auto Mode Linearization .. Special Function Setup .. Output Signal Reversal .. Output Signal Reversal .. Output Signal Offset .. Polarity Reversal .. Gain Preset .. Routine Maintenance .. System Self Diagnostic Test .. Fuse Replacement .. Major Internal Components .. Voltage Selections .. Cell, Heater, or Thermistor Replacement .. Removing the Cell Compartment .. Removing and Replacing the Cell Block .. Removing the Heater and/or Thermocouple .. Replacing the Heater and/or Thermocouple.

8 Cleaning .. Phone Numbers .. 5-9 AppendixA-1 Specifications .. A-1A-2 Recommended 2-Year Spare Parts List .. A-3A-3 Drawing List .. A-41-1 Teledyne analytical InstrumentsThermal Conductivity AnalyzerIntroduction analytical Instruments Model 2020 Thermal Conductivity Ana-lyzer, explosion proof, UL and CSA listed for class 1, DIV 1, Groups B, C,and D service, is a versatile microprocessor-based instrument for measur-ing a component gas in a background gas, or in a specific mixture ofbackground gases. It compares the Thermal Conductivity of a sample streamwith that of a reference gas of known composition. The 2020 can measure the concentration of one gas in a mixture of two gases. measure the concentration of a gas in a specific mixture ofbackground gases. measure the purity of a sample stream containing a singleimpurity or a mixture of standard 2020 is preprogrammed with automatic linearizationalgorithms for a large number of gases and gas mixtures.

9 The factory canadd to this data base for custom applications, and the sophisticated user canadd his own unique of the Model 2020 features covered in this manual are optional,selected according to the customers specific application. Therefore, the usermay find much here that does not apply to his instrument. This is unavoid-able due to the number of possible combinations of features available. Wehave endeavored to make the manual as usable and convenient as possible,in light of this analytical Instruments1-21 Introduction Model ApplicationsA few typical applications of the Model 2020 are: Power Generation Air liquefaction Chemical reaction monitoring Steel manufacturing and heat treating Petrochemical process control Quality assurance Refrigeration and storage Gas proportioning Features of the AnalyzerThe main features of the Model 2020 Thermal Conductivity Analyzerinclude: Three independent, user definable, analysis ranges allow up tothree different gas applications with one concentration rangeeach, or up to three concentration ranges for a single gas appli-cation, or any combination.

10 Special recalibration range for multiple applications. Recalibrat-ing one, recalibrates all. Automatic, independent linearization for each range. Auto Ranging allows Analyzer to automatically select the properpreset range for a given single application. Manual overrideallows the user to lock onto a specific range of interest. RS-232 serial digital port for use with a computer or otherdigital communications device. Six adjustable set points concentration with two alarms and asystem failure alarm relays. Extensive self-diagnostic testing, at startup and on demand. Sample and Hold for holding Analyzer s output during Autocalibration mode. A 2-line alphanumeric display screen, driven by microprocessorelectronics, that continuously prompts and informs the analytical InstrumentsThermal Conductivity AnalyzerIntroduction 1 High resolution, accurate indication of target or impurity gasconcentration from large, bright, meter readout.