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TA Instruments TMA 2940 CE Operator's Manual

Thermomechanical analyzer
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Thermal Analysis & Rheology
A S
W
C
UBSIDIARY OF
ATERS
ORPORATION
Thermomechanical Analyzer
Operator's Manual
PN 825615.001 Rev. C (Text and Binder)
PN 825615.002 Rev. C (Text Only)
Issued November 1999
TA I
TMA 2940 CE
NSTRUMENTS
109 Lukens Drive New Castle, DE 19720
TMA 2940 CE
I

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  • Page 1 109 Lukens Drive New Castle, DE 19720 Thermal Analysis & Rheology UBSIDIARY OF ATERS ORPORATION TMA 2940 CE Thermomechanical Analyzer Operator’s Manual PN 825615.001 Rev. C (Text and Binder) PN 825615.002 Rev. C (Text Only) Issued November 1999 TA I...
  • Page 2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 3 Table of Contents TA I TMA 2940 CE NSTRUMENTS...
  • Page 4 Table of Contents TA I TMA 2940 CE NSTRUMENTS...
  • Page 5 Table of Contents TA I TMA 2940 CE NSTRUMENTS...
  • Page 6 Table of Contents TA I TMA 2940 CE NSTRUMENTS...
  • Page 7 Table of Contents TA I TMA 2940 CE NSTRUMENTS...
  • Page 8 Table of Contents TA I TMA 2940 CE VIII NSTRUMENTS...
  • Page 9 Table of Contents TA I TMA 2940 CE NSTRUMENTS...
  • Page 10 Table of Contents TA I TMA 2940 CE NSTRUMENTS...

  • Page 11: Notes, Cautions, And Warnings

    Emphasizes a procedure that may damage equipment or cause loss of data if not followed correctly. Marks a procedure that may be hazardous WARNING to the operator or to the environment if not followed correctly. TA I TMA 2940 CE NSTRUMENTS...
  • Page 12 Helplines To TA Instruments TA I TMA 2940 CE NSTRUMENTS...
  • Page 13 Safety CE Compliance TA I TMA 2940 CE NSTRUMENTS XIII...
  • Page 14 Safety Instrument Symbols TA I TMA 2940 CE NSTRUMENTS...

  • Page 15: Electrical Safety

    Maintenance and repair of internal parts must be performed by TA Instruments or other qualified service personnel only. After transport or storage in humid condi- tions, this equipment could fail to meet all...
  • Page 16 Safety WARNING: Liquid nitrogen evaporates WARNING rapidly at room temperature. Be certain that areas where liquid nitrogen is used are well ventilated to prevent depletion of oxygen in the air. TA I TMA 2940 CE NSTRUMENTS...

  • Page 17: Lifting The Instrument

    Safety Lifting the Instrument Use two people to lift and/or carry the WARNING instrument. The instrument is too heavy for one person to handle safely. TA I TMA 2940 CE NSTRUMENTS XVII...

  • Page 18: Using This Manual

    Using This Manual TA I TMA 2940 CE XVIII NSTRUMENTS...
  • Page 19 Do not enter confined spaces where nitrogen gas may be present unless the area is well ventilated. The warning shown above applies to the use of liquid nitrogen. Oxygen depletion sensors are sometimes utilized where liquid nitrogen is in use. TA I TMA 2940 CE NSTRUMENTS...
  • Page 20 TA I TMA 2940 CE NSTRUMENTS...
  • Page 21 CHAPTER 1: Introducing the TMA 2940 CE TA I TMA 2940 CE 1–1 NSTRUMENTS...
  • Page 22 Introduction 1–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 23 Introduction Introduction Components TA I TMA 2940 CE 1–3 NSTRUMENTS...
  • Page 24 Introduction Keypad Display Furnace Assembly Cabinet Balance Enclosure 1–4 TA I TMA 2940 CE NSTRUMENTS...
  • Page 25 The 2940 CE Instrument The 2940 CE Instrument TA I TMA 2940 CE 1–5 NSTRUMENTS...
  • Page 26 Introduction Standby 23.25°C DimChg 0.135µm TMA 2940 Thermomechanical Analyzer 1–6 TA I TMA 2940 CE NSTRUMENTS...
  • Page 27 The 2940 CE Instrument 2940 CE Display 2940 CE Keypad HEATER POWER Experiment information and instrument con- NOTE: stants are entered from the controller key- board, not the instrument keypad. TA I TMA 2940 CE 1–7 NSTRUMENTS...
  • Page 28 Introduction SCROLL ZERO LENGTH MEASURE LENGTH PROBE 1–8 TA I TMA 2940 CE NSTRUMENTS...
  • Page 29 The 2940 CE Instrument Probe PROBE Probe FURNACE START TA I TMA 2940 CE 1–9 NSTRUMENTS...
  • Page 30 Introduction STOP STOP REJECT SCROLL-STOP SCROLL STOP 1–10 TA I TMA 2940 CE NSTRUMENTS...

  • Page 31: Power Switch

    This occurs when either a method is running or an end of method function (return to temp range) is selected and active. (See “Heater Indicator Light” in Chapter 6) for more informa- tion. POWER Switch POWER TA I TMA 2940 CE 1–11 NSTRUMENTS...

  • Page 32: Standard Accessories

    Introduction Accessories Standard Accessories 1–12 TA I TMA 2940 CE NSTRUMENTS...

  • Page 33: Optional Accessories

    Accessories Optional Accessories TA I TMA 2940 CE 1–13 NSTRUMENTS...

  • Page 34: Specifications

    Introduction Specifications 1–14 TA I TMA 2940 CE NSTRUMENTS...
  • Page 35 Specifications TA I TMA 2940 CE 1–15 NSTRUMENTS...
  • Page 36 Introduction 1–16 TA I TMA 2940 CE NSTRUMENTS...
  • Page 37 CHAPTER 2: Installing the TMA 2940 CE TA I TMA 2940 CE 2–1 NSTRUMENTS...
  • Page 38 Installation 2–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 39 These instructions are also found as separate unpacking instructions in the shipping box. Unpacking the 2940 CE Have an assistant help you unpack this unit. WARNING Do not attempt to do this alone. TA I TMA 2940 CE 2–3 NSTRUMENTS...
  • Page 40 Installation 2–4 TA I TMA 2940 CE NSTRUMENTS...
  • Page 41 Unpacking the TMA TA I TMA 2940 CE 2–5 NSTRUMENTS...

  • Page 42: Removing The Shipping Material

    Installation Removing the Shipping Material CAUTION: Steps 1 through 9 may be completed by the customer. Only qualified service personnel should proceed with steps 10 through 19. 2–6 TA I TMA 2940 CE NSTRUMENTS...
  • Page 43 Unpacking the TMA Whenever you remove the balance enclosure, WARNING make sure that the power is off and the instrument is unplugged. CAUTION: Only qualified service personnel should proceed beyond this point. TA I TMA 2940 CE 2–7 NSTRUMENTS...
  • Page 44 Installation Repacking the 2940 CE 2–8 TA I TMA 2940 CE NSTRUMENTS...

  • Page 45: Installing The Instrument

    Installing the Instrument Installing the Instrument CAUTION: To avoid mistakes, read this entire chapter before you begin installation. TA I TMA 2940 CE 2–9 NSTRUMENTS...

  • Page 46: Inspecting The System

    Run the following method to dry out the instru- ment (refer to “Running Experiments” for further information). Ramp at 10°C/min to 400°C Isothermal for 30 min. 2–10 TA I TMA 2940 CE NSTRUMENTS...

  • Page 47: Choosing A Location

    Installing the Instrument Choosing a Location TA I TMA 2940 CE 2–11 NSTRUMENTS...
  • Page 48 Installation Installing the Weight Tray Door 2–12 TA I TMA 2940 CE NSTRUMENTS...

  • Page 49: Installing The Stage

    Installing the Instrument Installing the Stage TA I TMA 2940 CE 2–13 NSTRUMENTS...
  • Page 50 Installation 2–14 TA I TMA 2940 CE NSTRUMENTS...
  • Page 51 Installing the Instrument SPRING CLIP TA I TMA 2940 CE 2–15 NSTRUMENTS...
  • Page 52 Installation Stage Shield Thermocouple 2–16 TA I TMA 2940 CE NSTRUMENTS...

  • Page 53: Installing The Expansion/Penetration Probes

    Installing the Instrument Installing the Expansion/ Penetration Probes NOTE: To learn how to install the film/fiber probe, turn to Chapter 4, "Using Your Options." Installing a Probe TA I TMA 2940 CE 2–17 NSTRUMENTS...

  • Page 54: Removing A Probe

    Installation Removing a Probe 2–18 TA I TMA 2940 CE NSTRUMENTS...
  • Page 55 When plugging or unplugging power cords, always handle them by the plugs, not by the cords. Protect power and communications cable WARNING paths. Do not create tripping hazards by laying them across accessways. GPIB Cable TA I TMA 2940 CE 2–19 NSTRUMENTS...
  • Page 56 Installation Serial Power Ready Reset Address GPIB Cord Connector Light Button Dial Connector NOTE: If you have a multiple instruments system, each instrument must have a different address. 2–20 TA I TMA 2940 CE NSTRUMENTS...
  • Page 57 Installing the Instrument NOTE: The instrument’s GPIB address is displayed during startup and can also be viewed on the instrument’s status display. TA I TMA 2940 CE 2–21 NSTRUMENTS...

  • Page 58: Purge Line

    WARNING the TMA instrument. For a list of the gases that can be used in the TMA, see Chapter 3. Use of corrosive gases will shorten the life of CAUTION: the instrument. 2–22 TA I TMA 2940 CE NSTRUMENTS...
  • Page 59 Installing the Instrument TA I TMA 2940 CE 2–23 NSTRUMENTS...
  • Page 60 Installation Air Cool Line 2–24 TA I TMA 2940 CE NSTRUMENTS...

  • Page 61: Power Cable

    Check the label on the back of the unit to verify the voltage. Make sure that you use the stepdown transformer (PN 994560.901) with the instrument to provide the correct line voltage and ensure safety. TA I TMA 2940 CE 2–25 NSTRUMENTS...
  • Page 62 Installation Starting the 2940 CE NOTE: Allow the TMA to warm up for at least 30 minutes before performing an experiment. POWER 2–26 TA I TMA 2940 CE NSTRUMENTS...
  • Page 63 Starting the 2940 CE Standby 23.25°C DimChg 0.135µm TMA 2940 Thermomechanical Analyzer TA I TMA 2940 CE 2–27 NSTRUMENTS...
  • Page 64 Installation Shutting Down the 2940 CE POWER HEATER 2–28 TA I TMA 2940 CE NSTRUMENTS...

  • Page 65: Chapter 3: Running Experiments

    CHAPTER 3: Running Experiments TA I TMA 2940 CE 3–1 NSTRUMENTS...
  • Page 66 Running Experiments 3–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 67 Overview Overview TA I TMA 2940 CE 3–3 NSTRUMENTS...

  • Page 68: Before You Begin

    Running Experiments Before You Begin 3–4 TA I TMA 2940 CE NSTRUMENTS...

  • Page 69: Calibrating The Tma

    Please note that this chapter provides guide- lines on when to perform these calibrations. For details on how to perform each calibration procedure, refer to the instrument control software online documentation. Force Calibration When to Calibrate TA I TMA 2940 CE 3–5 NSTRUMENTS...

  • Page 70: Probe Calibration

    A force calibration performs the functions of a NOTE: probe calibration (see the next section). There- fore, it is not necessary to perform a probe calibration immediately following a force calibration. Probe Calibration Temperature Calibration 3–6 TA I TMA 2940 CE NSTRUMENTS...
  • Page 71 TMA, position the tip of the thermocouple so that it bends at a 90° angle and lies flat against the platform. It should be close to, but not touching the sample. TA I TMA 2940 CE 3–7 NSTRUMENTS...

  • Page 72: Cell Constant

    Running Experiments Cell Constant 3–8 TA I TMA 2940 CE NSTRUMENTS...
  • Page 73 Calibrating the TMA TA I TMA 2940 CE 3–9 NSTRUMENTS...

  • Page 74: Running A Tma Experiment

    Running Experiments Running a TMA Experiment Experimental Procedure 3–10 TA I TMA 2940 CE NSTRUMENTS...

  • Page 75: Selecting A Probe

    Running a TMA Experiment Selecting a Probe NOTE: Refer to Chapter 4 for details regarding the optional probes. TA I TMA 2940 CE 3–11 NSTRUMENTS...
  • Page 76 Running Experiments Zeroing the Auto Measure System ZERO LENGTH 3–12 TA I TMA 2940 CE NSTRUMENTS...
  • Page 77 Running a TMA Experiment Sample Preparation and Loading Sample Preparation Sample Loading ZERO LENGTH PROBE TA I TMA 2940 CE 3–13 NSTRUMENTS...
  • Page 78 Running Experiments It is recommended that you place a quartz NOTE: wafer or a piece of thin aluminum foil between the stage and any thermoplastic samples to prevent damage to the stage. 3–14 TA I TMA 2940 CE NSTRUMENTS...
  • Page 79 Running a TMA Experiment NOTE: Low force levels may accentuate vibration- induced signal noise. MEASURE LENGTH Thermocouple Positioning Measuring the Sample Length MEASURE LENGTH TA I TMA 2940 CE 3–15 NSTRUMENTS...

  • Page 80: Setting Up An Experiment

    Running Experiments Setting Up an Experiment 3–16 TA I TMA 2940 CE NSTRUMENTS...

  • Page 81: Setting Up Accessories

    Running a TMA Experiment Setting Up Accessories Using Air Cool TA I TMA 2940 CE 3–17 NSTRUMENTS...
  • Page 82 Running Experiments Using a Purge Gas Suggestions 3–18 TA I TMA 2940 CE NSTRUMENTS...

  • Page 83: Starting An Experiment

    Running a TMA Experiment Starting an Experiment START TA I TMA 2940 CE 3–19 NSTRUMENTS...
  • Page 84 Running Experiments Stopping an Experiment STOP SCROLL-STOP The REJECT function discards all experiment CAUTION: data. Removing Samples 3–20 TA I TMA 2940 CE NSTRUMENTS...
  • Page 85 Running a TMA Experiment CAUTION: Use extreme caution when working with acid solutions. TA I TMA 2940 CE 3–21 NSTRUMENTS...
  • Page 86 Running Experiments Subambient Experiments NOTE: If the “Return to temperature range” method- end condition is activated, press the STOP key to deactivate it before trying to cool the TMA. Performing a Cooling Experiment 3–22 TA I TMA 2940 CE NSTRUMENTS...
  • Page 87 Adjusting the coolant during the course of the NOTE: run may cause nonlinear heating rates, which will be reflected in noisy or discontinuous curves. Techniques for Improved Subambient Operation TA I TMA 2940 CE 3–23 NSTRUMENTS...
  • Page 88 Running Experiments CAUTION: Do not program furnace temperatures greater than 600 C when using the aluminum mass. 3–24 TA I TMA 2940 CE NSTRUMENTS...
  • Page 89 CHAPTER 4: Using Your Options TA I TMA 2940 CE 4–1 NSTRUMENTS...
  • Page 90 Using Your Options 4–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 91 Overview Overview TA I TMA 2940 CE 4–3 NSTRUMENTS...
  • Page 92 Using Your Options Film/Fiber Accessory Description 4–4 TA I TMA 2940 CE NSTRUMENTS...

  • Page 93: Operating Procedures

    Film/Fiber Accessory Operating Procedures When comparing run data, make sure that all NOTE: comparison scans are made with the thermo- couple in the same position and at the same heating rate. Accessory Installation TA I TMA 2940 CE 4–5 NSTRUMENTS...
  • Page 94 Using Your Options Removing the Existing Probe Removing the Stage 4–6 TA I TMA 2940 CE NSTRUMENTS...
  • Page 95 Installing the Film/ Fiber Probe The special configuration of the film/fiber NOTE: accessory requires the installation of the probe before the stage. TA I TMA 2940 CE 4–7 NSTRUMENTS...
  • Page 96 Using Your Options Installing the Film/Fiber Stage 4–8 TA I TMA 2940 CE NSTRUMENTS...

  • Page 97: Calculating The Offset

    Film/Fiber Accessory After the thermocouple is installed, its tip may NOTE: interfere with the zero length operation. Tempo- rarily move the thermocouple when performing this operation. Calculating the Offset TA I TMA 2940 CE 4–9 NSTRUMENTS...
  • Page 98 Using Your Options 4–10 TA I TMA 2940 CE NSTRUMENTS...
  • Page 99 Film/Fiber Accessory Calibration TA I TMA 2940 CE 4–11 NSTRUMENTS...

  • Page 100: Sample Preparation

    Using Your Options Sample Preparation Using the Aluminum Balls Sample Length 12 to 25 mm (0.5 to 1.0 inch) 4–12 TA I TMA 2940 CE NSTRUMENTS...
  • Page 101 Film/Fiber Accessory TA I TMA 2940 CE 4–13 NSTRUMENTS...
  • Page 102 Using Your Options Using the Stainless Steel Clamps 4–14 TA I TMA 2940 CE NSTRUMENTS...
  • Page 103 Film/Fiber Accessory TA I TMA 2940 CE 4–15 NSTRUMENTS...
  • Page 104 Using Your Options 4–16 TA I TMA 2940 CE NSTRUMENTS...
  • Page 105 Flexure Accessory Flexure Accessory Description TA I TMA 2940 CE 4–17 NSTRUMENTS...

  • Page 106: Accessory Installation

    Using Your Options Accessory Installation Calibration 4–18 TA I TMA 2940 CE NSTRUMENTS...
  • Page 107 Flexure Accessory Sample Preparation ZERO LENGTH TA I TMA 2940 CE 4–19 NSTRUMENTS...
  • Page 108 Using Your Options 4–20 TA I TMA 2940 CE NSTRUMENTS...
  • Page 109 Dilatometer Accessory Dilatometer Accessory Description β β µ µ TA I TMA 2940 CE 4–21 NSTRUMENTS...
  • Page 110 Using Your Options β µ β β α α µ 4–22 TA I TMA 2940 CE NSTRUMENTS...
  • Page 111 If you compare data runs, make sure that all NOTE: comparison scans are made with the vial filled to the same level with filling medium, with the thermocouple in the same position, and heated at the same rate. Accessory Installation TA I TMA 2940 CE 4–23 NSTRUMENTS...

  • Page 112: Baseline Calibration

    Marking the vial at the fill level and filling future NOTE: sample runs to this level will insure that the baseline effect due to the fill medium are minimized from run to run. 4–24 TA I TMA 2940 CE NSTRUMENTS...
  • Page 113 Dilatometer Accessory Displacement Calibration TA I TMA 2940 CE 4–25 NSTRUMENTS...
  • Page 114 Store it in a desiccator when it is not being used. If the sample has become contaminated through long exposure to humidity, dry it in a vacuum oven at 200 C for one hour. 4–26 TA I TMA 2940 CE NSTRUMENTS...
  • Page 115 TA I TMA 2940 CE 4–27 NSTRUMENTS...
  • Page 116 Using Your Options ZERO LENGTH To avoid false thermocouple readings, make NOTE: sure that the thermocouple tip does not touch the sample vial. 4–28 TA I TMA 2940 CE NSTRUMENTS...
  • Page 117 Parallel Plate Rheometer Accessory Parallel Plate Rheometer Accessory Description Accessory Installation TA I TMA 2940 CE 4–29 NSTRUMENTS...
  • Page 118 NOTE: To avoid false thermocouple readings, make sure that the thermocouple tip does not touch the alignment cages or plates. Exposed portions of the two thermocouple leads must not touch each other. Calibration 4–30 TA I TMA 2940 CE NSTRUMENTS...
  • Page 119 Parallel Plate Rheometer Accessory Sample Preparation Sample Encapsulating Press TA I TMA 2940 CE 4–31 NSTRUMENTS...
  • Page 120 Using Your Options Removing the Existing Die Assembly The plunger in the upper hermetic die assem- WARNING bly is spring loaded and should be removed with care. 4–32 TA I TMA 2940 CE NSTRUMENTS...
  • Page 121 The upper hermetic die is now held in position by either the lower hermetic or crimping die. As the lower die-holder adjustment screw is NOTE: being removed, spring tension on the hermetic die plunger is relieved. TA I TMA 2940 CE 4–33 NSTRUMENTS...
  • Page 122 Using Your Options Installing the Pellet Press Die Set 4–34 TA I TMA 2940 CE NSTRUMENTS...
  • Page 123 Parallel Plate Rheometer Accessory Preparing Moldable Powders TA I TMA 2940 CE 4–35 NSTRUMENTS...
  • Page 124 Using Your Options 4–36 TA I TMA 2940 CE NSTRUMENTS...
  • Page 125 Parallel Plate Rheometer Accessory TA I TMA 2940 CE 4–37 NSTRUMENTS...
  • Page 126 Using Your Options Preparing Resinous Materials This procedure involves heating up the WARNING sample and mold assembly. Handle with tongs to prevent burns. 4–38 TA I TMA 2940 CE NSTRUMENTS...
  • Page 127 Parallel Plate Rheometer Accessory TA I TMA 2940 CE 4–39 NSTRUMENTS...
  • Page 128 Using Your Options Preparing Sheet Materials 4–40 TA I TMA 2940 CE NSTRUMENTS...

  • Page 129: Sample Loading

    To avoid false thermocouple readings, make sure that the thermocouple tip does not touch the alignment cage, sample, or plates. Exposed portions of the two thermocouple leads must not touch each other. Zero Length TA I TMA 2940 CE 4–41 NSTRUMENTS...
  • Page 130 Using Your Options Cleanup CAUTION: These procedures involve the use of heat or chemicals; appropriate safety measures should be observed at all times. Thermoplastic Material 4–42 TA I TMA 2940 CE NSTRUMENTS...
  • Page 131 Parallel Plate Rheometer Accessory Thermosetting Material Calculations Correction Calculations for Thermal Expansion of Parallel Plates TA I TMA 2940 CE 4–43 NSTRUMENTS...
  • Page 132 Using Your Options α α α α ∆ ∆1/ ∆ 4–44 TA I TMA 2940 CE NSTRUMENTS...
  • Page 133 Parallel Plate Rheometer Accessory α TA I TMA 2940 CE 4–45 NSTRUMENTS...
  • Page 134 Using Your Options Calculations for Viscosity and Wall Shear Rate Data η γ ∆ η π ∆ ∆ γ ∆ η γ 4–46 TA I TMA 2940 CE NSTRUMENTS...
  • Page 135 Hemispherical Probe Hemispherical Probe TA I TMA 2940 CE 4–47 NSTRUMENTS...
  • Page 136 Using Your Options 4–48 TA I TMA 2940 CE NSTRUMENTS...

  • Page 137: Chapter 5: Technical Reference

    CHAPTER 5: Technical Reference TA I TMA 2940 CE 5–1 NSTRUMENTS...
  • Page 138 Technical Reference 5–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 139 Description of the TMA 2940 CE Description of the TMA 2940 CE TA I TMA 2940 CE 5–3 NSTRUMENTS...
  • Page 140 Technical Reference Uses of Thermomechanical Analysis 5–4 TA I TMA 2940 CE NSTRUMENTS...
  • Page 141 Description of the TMA 2940 CE Calculating the Coefficient of Expansion α ∆ α ∆ α ∆ ∆ TA I TMA 2940 CE 5–5 NSTRUMENTS...
  • Page 142 Technical Reference Method Considerations 5–6 TA I TMA 2940 CE NSTRUMENTS...

  • Page 143: Status Codes

    Status Codes Status Codes TA I TMA 2940 CE 5–7 NSTRUMENTS...
  • Page 144 Technical Reference START 5–8 TA I TMA 2940 CE NSTRUMENTS...
  • Page 145 Status Codes TA I TMA 2940 CE 5–9 NSTRUMENTS...
  • Page 146 Technical Reference START 5–10 TA I TMA 2940 CE NSTRUMENTS...
  • Page 147 Status Codes TA I TMA 2940 CE 5–11 NSTRUMENTS...
  • Page 148 Technical Reference 5–12 TA I TMA 2940 CE NSTRUMENTS...

  • Page 149: Chapter 6: Maintenance And Diagnostics

    CHAPTER 6: Maintenance and Diagnostics TA I TMA 2940 CE 6–1 NSTRUMENTS...
  • Page 150 Maintenance and Diagnostics 6–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 151 Overview Overview TA I TMA 2940 CE 6–3 NSTRUMENTS...

  • Page 152: Routine Maintenance

    Maintenance and Diagnostics Routine Maintenance Because there are high voltages in this WARNING instrument, untrained personnel must not attempt to test or repair any electrical circuits. Inspection 6–4 TA I TMA 2940 CE NSTRUMENTS...
  • Page 153 Routine Maintenance Cleaning Cleaning the Keypad Cleaning the Probe Assembly TA I TMA 2940 CE 6–5 NSTRUMENTS...

  • Page 154: Cleaning The Stage

    Maintenance and Diagnostics Cleaning the Stage For small amounts of residue: For thorough cleaning: 6–6 TA I TMA 2940 CE NSTRUMENTS...
  • Page 155 Routine Maintenance Cleaning the Thermocouple TA I TMA 2940 CE 6–7 NSTRUMENTS...

  • Page 156: Replacing The Thermocouple

    Maintenance and Diagnostics Replacements Replacing the Thermocouple 6–8 TA I TMA 2940 CE NSTRUMENTS...
  • Page 157 Replacements TA I TMA 2940 CE 6–9 NSTRUMENTS...
  • Page 158 Maintenance and Diagnostics 6–10 TA I TMA 2940 CE NSTRUMENTS...
  • Page 159 Diagnosing Power Problems Diagnosing Power Problems Fuses Fuse 1 Fuse 2 Always unplug the instrument before you WARNING examine or replace the fuses. TA I TMA 2940 CE 6–11 NSTRUMENTS...
  • Page 160 The light in the HEATER switch will glow only after an experiment is initiated. The HEATER switch will continue to glow, even if it is switched to the OFF (0) position, until the "Stand By" status code is displayed. 6–12 TA I TMA 2940 CE NSTRUMENTS...

  • Page 161: Heater Indicator Light

    Diagnosting Power Problems Heater Indicator Light HEATER STOP TA I TMA 2940 CE 6–13 NSTRUMENTS...
  • Page 162 Maintenance and Diagnostics Power Failures 6–14 TA I TMA 2940 CE NSTRUMENTS...

  • Page 163: Test Functions

    TMA 2940 CE Test Functions TMA 2940 CE Test Functions The TMA Confidence Test TA I TMA 2940 CE 6–15 NSTRUMENTS...
  • Page 164 Maintenance and Diagnostics 2940 TMA V1.0 Confidence Test 00 TMA 2940 Thermomechanical Analyzer 6–16 TA I TMA 2940 CE NSTRUMENTS...
  • Page 165 TMA 2940 CE Test Functions TA I TMA 2940 CE 6–17 NSTRUMENTS...

  • Page 166: Replacement Parts

    Maintenance and Diagnostics Replacement Parts 6–18 TA I TMA 2940 CE NSTRUMENTS...
  • Page 167 Replacement Parts TA I TMA 2940 CE 6–19 NSTRUMENTS...
  • Page 168 Maintenance and Diagnostics 6–20 TA I TMA 2940 CE NSTRUMENTS...

  • Page 169: Appendix A: Ordering Information

    Appendix A: Ordering Information TA I TMA 2940 CE A–1 NSTRUMENTS...
  • Page 170 Appendix A A–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 171 Index Index TA I TMA 2940 CE I–1 NSTRUMENTS...
  • Page 172 Index α I–2 TA I TMA 2940 CE NSTRUMENTS...
  • Page 173 Index TA I TMA 2940 CE I–3 NSTRUMENTS...
  • Page 174 Index I–4 TA I TMA 2940 CE NSTRUMENTS...
  • Page 175 Index TA I TMA 2940 CE I–5 NSTRUMENTS...
  • Page 176 Index I–6 TA I TMA 2940 CE NSTRUMENTS...
  • Page 177 Index TA I TMA 2940 CE I–7 NSTRUMENTS...
  • Page 178 Index I–8 TA I TMA 2940 CE NSTRUMENTS...

Table of Contents