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TA DTC-300, Руководство по началу работы

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DTC-300 Getting Started Guide

Page 24

Shutting Down the DTC-300 System

Before you decide to power down your system, consider the following:

•

All of the components of your thermal analysis system are designed to be powered on for long periods.

•

The electronics of the DTC-300 perform more reliably if power fluctuations caused by turning units on 
and off are minimized.

•

The over-temperature protective system is only active while the instrument is powered on.

For these reasons, turning the system and its components on and off frequently is discouraged. Therefore, 
when you finish running an experiment on your instrument and wish to use the thermal analysis system for 
some other task, it is recommended that you leave the instrument on.

CAUTION: Do not power off the chiller during instrument operation. The top stack, guard furnace, 
and bottom stack must be below 50°C. Failure to do so may result in damage to the instrument.

To power down your system, set the DTC-300 

MAIN POWER

 switch to the OFF (

0

) position.

Running a DTC-300 Experiment

Sample Requirements

Test samples must be prepared with smooth and flat surfaces on both sides. Dense, rigid samples must be 
tested with thermal compound applied to both surfaces, to minimize the thermal resistance of the interface 
between the sample and the instrument. This might not be appropriate for porous materials, since the ther-
mal compound may penetrate the sample, thereby changing its properties. Thin, flexible samples, like 
polymeric films and papers, should also be tested without thermal compound.

NOTE

: In cases when the sample needs to be tested without using thermal compound, a special calibration 

must be performed, in the same conditions.

Samples may be up to 20 mm (0.75 in) thick. Unless the sample material is a product having a fixed thick-
ness, e.g. plastic film or paper, the optimum sample thickness for obtaining high test accuracy can be cal-
culated from an estimate of the sample thermal conductivity:

d < 50 * 

λ

 [mm]

and d > 0.5 * 

λ

 [mm]

In these expressions, enter for 

λ

 the expected thermal conductivity in W/mK.

Содержание DTC-300

Страница 1: ...n Getting Started Guide Revision E Issued April 2020...

Страница 2: ...other intellectual property TA Instruments Operating Software as well as Module Data Analysis and Utility Software and their asso ciated manuals are proprietary and copyrighted by TA Instruments Purch...

Страница 3: ...ual 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 Othe...

Страница 4: ...rical equipment for measurement control and laboratory use Part 1 General Requirements CAN CSA C22 2 No 61010 2 010 Particular requirements for laboratory equipment for the heating of materials For Eu...

Страница 5: ...General Requirements Emissions Meets Class A Requirements per CISPR 11 Immunity Per Table 1 Basic Immunity Test Requirements For the United States Code of Federal Regulations CFR Title 47 Telecommuni...

Страница 6: ...in de ne pas toucher cette zone ou de laisser un mat riau susceptible de fondre ou de br ler entrer en contact avec cette surface chaude WARNING The operator of this instrument is advised that if the...

Страница 7: ...instrument DANGER Because of the high voltages in this instrument maintenance and repair of internal parts must be performed by TA Instruments or other qualified service personnel only DANGER cause de...

Страница 8: ...300 11 Overview 11 DTC 300 System Components 12 Electronic Enclosure 12 DTC 300 Front Panel 12 DTC 300 Back Panel 14 Test Stack 15 Instrument Specifications 16 Chapter 2 Installing the DTC 300 System...

Страница 9: ...mple 34 Running a Conductivity Test 35 Stopping a Test 39 Analyzing a Completed Test 39 Reviewing the Results 39 Reanalyzing the Test Results 40 Manually Creating a Conductivity Test 40 Chapter 4 Cali...

Страница 10: ...tarted Guide Page 10 Uninstalling the Stack Spacer 51 Installing the Stack Spacer 52 Uninstalling and Installing the Bottom Stack 53 Uninstalling the Bottom Stack 53 Installing the Bottom Stack 54 Rep...

Страница 11: ...2 to 0 02 m2K W Optional ranges are 0 0005 to 0 01 and 0 01 to 0 05 m2 K W The DTC 300 is configured to test a 50 8 mm diameter sample The instrument operates from 20 to 300 C a suitable chiller circu...

Страница 12: ...TA These parameters are re initialized at the beginning of each test to ensure proper starting conditions An independent over temperature monitor is employed as a safety for the device The fault indi...

Страница 13: ...P GUARD BOTTOM Displays current temperature and setpoint for each heater SPEED INCREASE knob Controls the speed at which the top stack moves up or down MOVE FREE switch Activates the top stack pneumat...

Страница 14: ...Table 2 DTC 300 Back Panel Port Function USB Provides communications to the Temperature Measurement System RS232 Provides communication to the PID Heater Control System DRAIN Removes condensing water...

Страница 15: ...urface is part of a calibrated heat flux transducer As heat flows from the upper surface through the sample to the lower sur face a uniaxial temperature gradient is established in the stack By measuri...

Страница 16: ...0A L 250V Operating Environmental Conditions Temperature 15 to 35 C Relative humidity 5 to 80 non condensing Maximum Altitude 2000 m 6560 ft Locate instrument in a ventilated space hood etc if noxious...

Страница 17: ...is required to supply either compressed air dried and filtered to 10 microns or laboratory grade inert gas i e N2 from a high pressure cylinder for operating the pneumatic system e Operating below the...

Страница 18: ...the instrument Connecting the utilities It is strongly recommended that you have your DTC 300 system installed by a TA Instruments Service Representative call for an installation appointment when you...

Страница 19: ...ect air drafts fans room air ducts Poorly ventilated areas Electrically noisy areas or areas prone to mechanical vibrations NOTE Do not place equipment against walls or cabinets that might impede air...

Страница 20: ...ever plugging or unplugging power cords handle them by the plugs not by the cords MISE EN GARDE Chaque fois que vous branchez ou d branchez les cordons d alimentation tenez les par les fiches et non p...

Страница 21: ...air pressure initially at 40 psi 2 8 bar for the operation The supply air pressure may not be more than 60 psi 4 14 bar 4 Check the air pressure gauge on the front panel and if necessary turn the air...

Страница 22: ...ments the sub ambient insulation ring is used in place of the guard furnace The test chamber door must be closed to prevent moisture in the surrounding air from condensing on cold surfaces and purged...

Страница 23: ...ument to the control computer Powered up the unit Become familiar with instrument operations Become familiar with the software Startup and Shutdown Procedures Starting the DTC 300 System The power swi...

Страница 24: ...power down your system set the DTC 300 MAIN POWER switch to the OFF 0 position Running a DTC 300 Experiment Sample Requirements Test samples must be prepared with smooth and flat surfaces on both sid...

Страница 25: ...ng isopropyl alcohol and lint free wipes 5 Apply a small volume of thermal compound approximately 25 diameter and 25 high to the center on each face of the sample 6 Make sure the SPEED INCREASE switch...

Страница 26: ...mple NOTE Contact TA Instruments if you would like to obtain calibration samples 5 Place the sample on the lower surface plate of the test column and align the sample 6 Lower the heater assembly with...

Страница 27: ...pound approximately 25 diameter and 25 high to the center on each face of the sample 6 Make sure the SPEED INCREASE switch is in the off position Then put the sample onto the bottom stack and lower th...

Страница 28: ...inthelowestposition 8 Close the front door and secure the latches 9 Input the testing information and follow the on screen programming Sub Ambient Temperature Testing Loading the Sample 1 Move the gua...

Страница 29: ...ler bath with the adequate coolant specified by the manufacturer of the chiller being used for testing temperatures near 20 C chiller temperature set at 35 to 45 C 5 Open the front cover of the unit L...

Страница 30: ...n This removes the air pressure from the cylinder and eliminates the compressive load on the specimen Realign the sample and then place the switch back in the MOVE position 8 Release the spring loaded...

Страница 31: ...four and five layers of material stacked It is recommended to have at least four different num bers of layers of material tested NOTE No thermal compound should be used between the layers of samples...

Страница 32: ...ngs The inner ring is a spacer to keep the metal plates at a fixed distance The outer ring is primarily a container for the specimen material Each cell is provided with two sets of rings including a 0...

Страница 33: ...ity meter Any scratches or gouges in the surfaces can lead to a decreased accuracy of the results These parts are re usable The split rings and the inner spacer ring are made from a dense insulation m...

Страница 34: ...he top of the spacer ring so that the top plate will contact it properly 7 Place the top plate onto the specimen surface It should slide between the split rings and rest on the specimen 8 Load the pol...

Страница 35: ...oose the test type as well as enter sample and instrument information 1 Open the software 2 Click Operation Select Startup Information from the Operation menu Figure 6 Operation menu 3 Click OK on the...

Страница 36: ...appears on results and graphs Sample File ID Must be unique for each test the software creates the result and graph files from this entry Operator Enter your name or initials Test Number Temperature a...

Страница 37: ...r create a new program Choose a temperature program and then click OK or click New to create a new program Figure 11 Temperature Program Titles window 8 The Temperature Program window displays If a sa...

Страница 38: ...ature This is a safety feature that will stop the test if any heater reaches the temperature value entered in this window Click OK Figure 14 Safety Temperature window 11 A Start Test dialog box displa...

Страница 39: ...ting Stop Test Analyzing a Completed Test Test data is analyzed using a post test auxiliary program The software can also be used to review older tests Reviewing the Results 1 Click Results and select...

Страница 40: ...g you considerable time 1 Click Results Post Analysis Reanalyze a Conductivity Test 2 When prompted select the Conductivity test file to be analyzed 3 In the Sample Information window modify the sampl...

Страница 41: ...OK Figure 19 Enter setpoints 5 Enter the temperatures and thickness for all setpoints Figure 20 Setpoint information 6 A Conductivity Changes window displays asking if you would like to create a new...

Страница 42: ...upcoming test and place the appropriate spacer in the instrument s stack 8 Measure and record the thickness of the first calibration reference you plan to test Apply a small volume ofthermalcompound...

Страница 43: ...calibration reference you plan to test Apply a small volume ofthermalcompound approximately 25 diameterand 25 high tothecenteroneachfaceofthesample 9 Place the calibration reference on the exposed su...

Страница 44: ...sample 9 Place the calibration reference on the exposed surface of the bottom heater assembly and align the reference with the lower stack 10 Lower the top heater assembly with the UP DOWN switch Chec...

Страница 45: ...ce of the metal plate ends up below the top of the outer ring you have chosen the wrong outer ring The top metal surface must always be above the outer ring 8 Hold the cell by the outer ring and apply...

Страница 46: ...mation 4 A Calibration Changes window displays asking if you would like to create a new file to save the changes Click No to terminate the reanalysis or click Yes to continue 5 A Sample Information wi...

Страница 47: ...OK Figure 22 Calibration Modify 3 Modify each sample temperature and thickness as needed 4 A Calibration Changes window displays asking if you would like to create a new file to save the changes Clic...

Страница 48: ...erminate the reanalysis or click Yes to continue 7 A Sample Information window displays Update the information if needed 8 If the Sample File ID field is left unchanged a window displays asking to ove...

Страница 49: ...Yes to overwrite the file or No to terminate modification 6 Modified calibration results display Manually Creating a Calibration File 1 In the software click Results Post Analysis Create a Calibratio...

Страница 50: ...eing created with Figure 27 Setpoint information 5 A Calibration Changes window displays asking if you would like to create a new file to save the changes Click No to terminate the calibration creatio...

Страница 51: ...nded by TA Instruments check with TA Instruments that the proposed method will not damage the instru ment MISE EN GARDE Avant d utiliser une m thode de nettoyage ou de d contamination autre que celle...

Страница 52: ...1 Cleanboththetopandbottomstacksurfaceswithalint freeclothandasmallamountofisopropylalcohol 2 Lift the bottom stack off of the securing posts and insert the stack spacer using a hex key 3 Place the b...

Страница 53: ...surfaceswithalint freeclothandasmallamountofisopropylalcohol 6 Remove the two screws under the bottom stack Unplug the bottom heater connector from the left side of the bottom stack Figure 30 Remove s...

Страница 54: ...t 3 Plug in the bottom heater connector 4 Make sure that all bottom stack components are correctly aligned 5 Place a clean sample onto the bottom stack surface 6 Replace the two screws directly under...

Страница 55: ...igh Range Table 7 References Part Number Description 854117 901 Stainless Steel Reference 50 8 mm OD x 19 05 mm thick 854118 901 Stainless Steel Reference 50 8 mm OD x 12 7 mm thick 854119 901 Stainle...

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