TA DHR Series Getting Started Manual
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TA DHR Series Getting Started Manual

Environmental test chamber
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DHR Series and AR Series
Environmental Test Chamber
Getting Started Guide
Revision D
Issued November 2013

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  • Page 1 DHR Series and AR Series Environmental Test Chamber Getting Started Guide Revision D Issued November 2013...
  • Page 2 TA Instruments may have patents, patent applications, trademarks, copyrights, or other intellectual prop- erty covering subject matter in this document. Except as expressly provided in written license agreement from TA Instruments, the furnishing of this document does not give you any license to these patents, trade- marks, copyrights, or other intellectual property.

  • Page 3: Introduction

    Introduction Important: TA Instruments Manual Supplement Please click the TA Manual Supplement link to access the following important information supplemental to this Getting Started Guide: • TA Instruments Trademarks • TA Instruments Patents • Other Trademarks • TA Instruments End-User License Agreement •...

  • Page 4: Notes, Cautions, And Warnings

    Notes, Cautions, and Warnings This manual uses NOTES, CAUTIONS, and WARNINGS to emphasize important and critical instructions. In the body of the manual these may be found in the shaded box on the outside of the page. NOTE: A NOTE highlights important information about equipment or procedures. CAUTION: A CAUTION emphasizes a procedure that may damage equipment or cause loss of data if not followed correctly.

  • Page 5: Electromagnetic Compatibility Standards

    Electromagnetic Compatibility Standards For Australia and New Zealand AS/NZS CISPR11:2004 Limits and methods of measurement of electronic disturbance characteristics of industrial, scientific and medical (ISM) radio frequency equipment. For Canada ICES-001 Issue 4 June 2006 Interference-Causing Equipment Standard: Industrial, Scientific, and Medical Radio Frequency Generators.

  • Page 6: Safety

    Safety Do not attempt to service this instrument, as it contains no user-serviceable components. Required Equipment While operating this accessory, you must wear eye protection that either meets or exceeds ANSI Z87.1 standards. Additionally, wear protective clothing that has been approved for protection against the materials under test and the test temperatures.

  • Page 7: Table Of Contents

    Important: TA Instruments Manual Supplement ........

  • Page 8: Chapter 1: Introducing The Environmental Test Chamber

    Chapter 1: Introducing the Environmental Test Chamber About the Environmental Test Chamber (ETC) The ETC is an add-on unit for the DHR/AR-G2/AR 2000ex that enables it to characterize solid samples in torsion. To work on composites/polymers in torsion requires a temperature-controlled chamber for envi- ronmental control of the sample, plus specially designed sample clamps.

  • Page 9: Etc Components

    ETC Components The ETC chamber is mounted onto a metal plate that is secured to the back of the rheometer. The DHR ETC has dowel pins for alignment that also provide support while the unit is secured in place. Handles at the bottom of each door are provided for lifting and positioning.

  • Page 10: The Etc Viewer

    The ETC Viewer WARNING: After ETC use, do not turn off the cooling air to the ETC Viewer until the unit has returned to room temperature. Doing so could damage the lens assembly and/or camera chip. AVERTISSEMENT: Après l'utilisation de l'ETC, n'arrêtez pas le passage de l'air de refroidissement vers l'afficheur ETC tant que l'appareil n'est pas revenu à...

  • Page 11: System Specifications

    System Specifications Refer to the table below for ETC system specifications: Table 1: ETC Specifications Temperature range no cooling 50°C to 600°C LN2 cooling –160°C to 600°C Typical ramp rate Maximum ramp rate up to 60°C/min Internal resolution 0.02°C 1. Ramp Rate: The maximum sustainable ramp rate will depend on a number of factors particularly the start and end temperature.

  • Page 12: Chapter 2: Installing The Etc

    This chapter provides information on how to install and set up the Environmental Testing Chamber (ETC). Installing the ETC Assembly on the DHR Series Follow the instructions below to install the ETC on a DHR Series Rheometer. Mounting the Test Chamber Turn on the rheometer and move the rheometer head up to the maximum height.
  • Page 13 Lift the ETC with the doors fully open using the handles, as shown below. ETC doors open Handles on ETC Figure 4 Lifting the ETC door. Insert the dowel pins on the ETC into the dowel holes on the rear of the instrument, as shown in Figure Figure 5 Mounting the ETC on the rear of the instrument.
  • Page 14 Once in position with the doors still fully open, the ETC will self-support on the dowel pins. Figure 6 ETC mounted on back of instrument with doors fully open. Screw the four +captive screws into the casting to secure the ETC to the instrument. Figure 7 Securing the ETC to the instrument.
  • Page 15 Plug in the two ETC D-type connectors into the Attachment Left and Attachment Right. Figure 8 Attachments installed on rear of instrument. 10 Open the ETC oven door to gain access to the Smart Swap™ mounting. Removal of the ETC is the reverse of the preceding steps. Note that you can leave the ETC in place and still use other Smart Swap temperature systems.

  • Page 16: Installing The Etc Assembly On The Ar Series

    Installing the ETC Assembly on the AR Series Follow the instructions below to install the ETC on an AR-G2 or AR 2000ex. Mounting the Test Chamber Turn on the rheometer and move the rheometer head up to the maximum height. Use the Head UP button, located on the instrument control panel.
  • Page 17 tighten these screws. Figure 10 The ETC open. Insert the final two screws (C and D in Figure Adjust the position of the ETC on the screws and then tighten all four screws. Check the adjustment and adjust if required by loosening the screws and shifting the position of the ETC on the rheometer.

  • Page 18: Installing The Lower Assembly

    Installing the Lower Assembly Fit the lower attachment, ensuring it is aligned correctly. See the figure below. Figure 11 Fitting the lower attachment. Connect the accessory cable from the lower attachment to the rheometer, as seen below. Accessory cable plug connection Figure 12 Connecting the accessory cable from the lower attachment to the rheometer.
  • Page 19 Connect the purge gas to the rheometer, as shown in Figure 13. If you have a suitable supply of nitrogen gas (2 bar minimum pressure, nominal 10 L/min flow rate) it is recommended that you connect the feed gases to the ETC as shown in Figure 15.
  • Page 20 Figure 15 ETC connections using nitrogen as the agitation gas. DHR/AR Series Environmental Test Chamber Getting Started Guide Page 20...

  • Page 21: Installing The Low Temperature Accessory

    Installing the Low Temperature Accessory In order to operate the ETC at temperatures below ambient and also to facilitate rapid cooling, the (optional) low temperature accessory can be used. This works by supplying a controlled flow of liquid nitrogen/cold nitrogen that is fed down the inside of the oven and evaporates. Follow the installation procedure in the previous section up to step 4.
  • Page 22 The electrical and gas/ liquid connections for the ETC low temperature assembly are shown in Figure 12.13. Connect a gas feed to the Gas In port on the flow meter assembly using the 8-mm internal diameter white nylon tubing provided. If the main air supply is used as the feed gas, the line should be split upstream of the flow meter assembly and rheometer filter/regulator.

  • Page 23: Installing/Removing The Etc Viewer

    All ETCs are shipped in a state which is prepared to install the ETC Viewer. Insulated plugs fill the viewer and secondary lighting cavities that are needed for the viewer. The viewer will generally be fitted by a TA Service Engineer, but if the unit needs to be removed for return to a TA service shop for repair, follow these instructions.
  • Page 24 Figure 21 ETC with covers removed. Remove the three 3-mm hex head bulkhead screws holding the secondary lighting in place and remove the unit. Fit the insulated plug in its place. Bulkhead screws Figure 22 Removing the bulkhead screws. Remove the three 3-mm nuts holding the main viewer module in place and remove the unit. Fit the insulated plug in its place.

  • Page 25: Connecting The Camera Viewer

    Disconnect the signal/power connector and cooling air supply from the inside of the back panel shown in the figure below. Signal/power connector Cooling air supply Figure 24 Disconnecting power. The complete unit can now be removed and packed in its original packing material. Follow the instructions in reverse for fitting the viewer module.
  • Page 26 Place a “T” connector in the main air line to the rheometer, before the filter regulator, and then feed through the supplied flow meter at 15 L/min. This is for the cooling air supply. Connect EXP-1 on the control box to EXP-1 on the rear of the main electronics box. See the figure below. EXP-1 Figure 26 Rear of main electronics box.

  • Page 27: Etc Viewer Schematics

    ETC Viewer Schematics The following figures provide schematics of the various components of the ETC Viewer. Figure 28 Cooling schematic. Figure 29 Primary lighting schematic. DHR/AR Series Environmental Test Chamber Getting Started Guide Page 27...
  • Page 28 Figure 30 Sample view. Figure 31 Lighting schematic. DHR/AR Series Environmental Test Chamber Getting Started Guide Page 28...

  • Page 29: Chapter 3: Operating The Etc

    Chapter 3: Operating the ETC This chapter describes operating tips for the ETC. For ETC Viewer operation instructions, refer to TRIOS software Online Help. If the system has been set up according to the instructions in this manual, the rheometer should now be ready to use.

  • Page 30: Operating Hints

    For maintenance instructions of the cryogenic pressure vessel, please refer to the instructions supplied with the unit. If you purchased the Dewar flask from TA Instruments, the document is titled “Guide to good housekeeping, maintenance and periodic examination of cryogenic pressure vessels.”...

  • Page 31: Index

    Index cautions 4 control electronics 9 cooling controlled 30 cryogenic pressure vessel 30 electromagnetic compatibility standards 4 Environmental Testing Chamber (ETC) installing 12 installing the low temperature accessory 21 oven 16 setting up 12 equilibrium time 30 control electronics 9 gas ring 9 heating chamber 9 overview 8...
  • Page 32 geometries 29 heating chamber 9 instrument symbols 6 license agreement 3 low temperature accessory 21 mapping procedure 30 notes 4 operation rheometer 30 oven 9 parallel plates 29 cleaning 29 patents 3 polymers 30 pressure 22 purge gas connecting to rheometer 19 Regulatory Compliance 4 regulatory compliance 4 DHR/AR Series Electrically Heated Plate Getting Started Guide...
  • Page 33 19 cooling 30 thermocouple 29 safety 6 instrument symbols 6 Safety Standards 4 safety standards 4 TA Instruments offices 3 thermocouple 9, 29 trademarks 3 warnings 4 DHR/AR Series Electrically Heated Plate Getting Started Guide Page 33...

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