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Parr Instrument 6755 Operating Instructions Manual

Solution calorimeter
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6755 Solution Calorimeter
Operating Instruction Manual

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Summary of Contents for Parr Instrument 6755

  • Page 1 6755 Solution Calorimeter Operating Instruction Manual...

  • Page 2: Table Of Contents

    Table of Contents PREFACE CHAPTER 3 OPERATION Scope Quick Start Related Instructions Sample Size Intended Usage Filling the Dewar Explanation of Symbols Loading a Solid Sample Safety Information Loading a Liquid Sample General Specifications Installing the Loaded Cover Assembly Environmental Conditions Combining the Reactants Provisions for Lifting and Carrying Emptying the Calorimeter...
  • Page 3 Table of Contents CHAPTER 5 CHAPTER 9 CALCULATIONS PARTS LISTS & DRAWINGS Standardization Parts for the 6755 Solution Calorimeter Calculating the Energy Change Principal Assemblies in 6772 Calorimetric Thermometer Reading the Thermogram 6755 Solution Calorimeter 6772 Calometric Thermometer Schematic Back Panel of 6772 Calorimetric Thermometer...

  • Page 4: Scope

    6755 Solution Earth Ground. Functional earth Calorimeter should be made a part of these in- connection. This connection shall be structions.

  • Page 5: Safety Information

    Preface Safety Information Environmental Conditions This apparatus is to be used indoors. To avoid electrical shock, always: 1. Use a properly grounded electrical outlet of correct voltage and current handling capability. Operating: 15 °C to 30 °C; maximum relative humidity of 80% non-condensing. Installation Cat- 2.

  • Page 6: Installation

    100 watts of power. Grounding is very important not only as a safety mea- The 6755 Solution Calorimeter requires approximate- sure, but also to ensure satisfactory controller perfor- ly 4 square feet of work space on a sturdy bench/ mance.

  • Page 7: Thermistor Probe Installation

    6755 Installation Thermistor Probe Installation the cable connecting the balance to the balance input port of the Calorimetric Thermometer must Connections for two thermistor probes are located be correctly wired or configured. In addition, the on the back of the 6772 Calorimetric Thermometer.

  • Page 8: Ethernet Interface

    Cable. Both PC and 6772 must be assigned static IP tion screen allows the user to give a meaningful addresses from the same subnet (e.g. 192.168.1.125 name to the calorimeter, such as _ 6755-lab. The and 192.168.1.110 with net mask 255.255.255.0). default HOSTNAME is _ -controller. The suffix .local must be appended to the hostname when...
  • Page 9 6755 Installation The following screenshot illustrates the contents The following screenshot illustrates the Calorimet- of the Calorimetric Thermometer data directory as ric Thermometer status page. presented by a web browser. You can drag and drop or copy and paste test data files...
  • Page 10 Installation Clicking on the Run Data tab displays a list of re- Clicking on the LCD Snapshot Page will bring up an ports currently in the instrument memory. Clicking image of the current display on the 6772. Note that on any given report will provide a display similar this is a picture only.

  • Page 11: Optional Feature Keys

    6755 Installation Optional Feature Keys Bar Code Port The use of barcodes in the laboratory has become Remote Operation a highly accurate, rapid and inexpensive way to The 6772 can be operated remotely via PC over a identify samples. The only scanner currently sup- network with the purchase of the 1965E Remote poted is part no.

  • Page 12: Program Installation & Control

    Numerous the 6755 Solution Calorimeter . A more in-depth explanation of these parameters is found on the provisions are included to permit the use of other corresponding parameter group help pages.

  • Page 13: Recommended Operating Settings

    6755 Program Installation & Control Recommended Operating Settings The following are recommended operating settings for the 6755 Solution Calorimeter. Calorimeter Operation Diagnostics Stirrer Calorimetry Parameters Operating Controls Tolerance (L) Parameters Method of Operation Solution Preperiod Tolerance (L1) 0.002 LCD Backlight Timeout(s)

  • Page 14: Operation

    More than 1 g of solid may be used in some 2. Turn on the stirrer motor switch on the 6755 cases, but smaller samples are preferred so that calorimeter.

  • Page 15: Loading A Liquid Sample

    6755 Operation it firmly onto the dish. Then lift the cover from the 3. A post-period during which the calorimeter calorimeter and attach the cell to the stirring shaft again comes to equilibrium. The thermometer by sliding the plastic coupling onto the shaft as...

  • Page 16: Manual Test Sequencing

    Operation • Fixed – In this method the operator determines If the data log destination is a log file, the log file what his jacket temperature will be and is located at /flash/log/datalog.csv and may be enters it into the thermometer. All heat leak retrieved via FTP .

  • Page 17: Menu Descriptions

    Menu Descriptions choices. Always clear the current value before haPter entering a new value. Once entered the screen will revert to the previous menu and the new Menu Descriptions value will be displayed in the lower right corner of the key. Menu System 4.

  • Page 18: Calorimeter Operation

    6755 Menu Descriptions CALORIMETER OPERATION (CONTINUED) CALORIMETER OPERATION The Calorimetric Thermometer will normally be TEMPERATURE PLOT SETUP MENU operated from the Calorimeter Operation Menu, although tests can always be started from any menu screen. Enable Bucket: Toggles ON/OFF . Bucket Autoscale: Toggles ON/OFF .

  • Page 19: Operating Controls

    Menu Descriptions CALORIMETER OPERATION (CONTINUED) OPERATING CONTROLS TEMPERATURE PLOT SETUP (CONTINUED) Time Units: Toggles between minutes and seconds. Bucket Plot Color: Toggles between: » » Green » Yellow » Blue » Magenta » Cyan » White » Black Method of Operation: Offers an operating mode of either combustion or solution.

  • Page 20: Program Information & Control

    6755 Menu Descriptions PROGRAM INFORMATION & CONTROL PROGRAM INFORMATION & CONTROL (CONT.) Software and Hardware Info: This screen displays important information such as the main software version, I/O board hardware information, CPU type, I/O firmware revision, and Controller IP address.

  • Page 21: Data Entry Controls

    Menu Descriptions PROGRAM INFORMATION & CONTROL (CONT.) DATA ENTRY CONTROLS USER/FACTORY SETTINGS (CONTINUED) Save User Default Settings: Used to record the setup to the memory once the user has config- ured the instrument to their operating require- ments. Note: Keys which make global changes to the setup of the calorimeter contain a YES or NO response to make certain that the user wishes to proceed.

  • Page 22: Reporting Controls

    6755 Menu Descriptions REPORTING CONTROLS COMMUNICATION CONTROLS Accesses sub-menus which set the communica- tions protocols for the printer and balances. Report Width: Toggle this key to set the column width of the printer to either 40 or 80 columns. Select 40 when the 1759 Printer is used.

  • Page 23: Balance Port Settings

    Menu Descriptions COMMUNICATION CONTROLS (CONTINUED) COMMUNICATION CONTROLS (CONTINUED) BALANCE PORT COMMUNICATIONS (CONTINUED) BALANCE PORT COMMUNICATIONS (CONTINUED) Customize Balance Settings: Sets the com- Log Balance to Display: Directs the incoming munication parameters for the USB port used data stream from the balance to a display buf- for the balance port.

  • Page 24: File Management Menu

    6755 Menu Descriptions COMMUNICATION CONTROLS (CONTINUED) FILE MANAGEMENT MENU RUN DATA FILE MANAGER (CONTINUED) • Select: This key is used to begin the file selection process. The up / down and page up / page down keys are used to scroll up and down the file list.

  • Page 25: Diagnostics

    Data Log Format: Toggles between Text Format Note: The ignition Unit circuit is not used in the and Data Format (csv). Data is either logged 6755 Solution Calorimeter. with the supporting tag information (text) or in a comma separated variable (csv) data format as Data Logger: Displays ON/OFF status and ac- selected by the user.

  • Page 26: I/O Diagnostics

    This screen is used to detail the course of a test or to NOTE: Most of the funtions on this menu are not observe the heating / cooling performance of the applicable to the 6755 Solution Calorimeter. calorimeter.

  • Page 27: Calculations

    A sample of tris (hydroxymethyl) aminomethane, commonly called TRIS, is furnished with the 6755 Determine the energy equivalent of the empty Calorimeter to provide a reliable standardizing calorimeter by subtracting the heat capacity of the reagent.

  • Page 28: Calculating The Energy Change

    6755 Calculations Calculating the Energy Change Reading the Thermogram The energy change, Q, measured in this calorimeter In order to determine the net temperature change is calculated by multiplying the net corrected tem- produced by the reaction, it is necessary to interpolate perature change, ∆T...
  • Page 29 Calculations Example - Exothermic Reaction Enthalpy change Problem: Determine the change in enthalpy for solid sodium sulfate, Na , when dissolved in a 5 gram/liter aqueous solution of barium chloride, BaCl • 2H = 0.1458 g = -34.99 cal/g @ 24.885 °C = 100.00 g solution Or, multiplying by 142.04 (the molecular weight...
  • Page 30 6755 Calculations Example - Endothermic Reaction Enthalpy change Problem: Determine the heat of solution of solid potassium nitrate, KNO when dissolved in water. = 0.7180 g Distilled water = 100.00 g = -34.99 cal/g @ 24.885 °C Corrected temperature rise Or, multiplying by the molecular weight of ∆T...

  • Page 31: Reports

    Reports The displayed files can be sorted by filename haPter (sample ID number), by type, by status or by date of test by simply touching the appropriate column. Reports The 6772 Calorimetric Thermometer can transmit its stored test data in either of two ways. The AUTO REPORT DESTINATION key on the menu toggles the report PORTING CONTROLS...

  • Page 32: File Management

    6755 File Management The controller of the 6772 Calorimetric Thermom- haPter eter can accept USB drives. These drives can be used to: File Management • Copy test file data for transfer to a computer • Copy log file data for transfer to a computer The 6772 Calorimetric Thermometer will hold data for 1000 tests in its memory.

  • Page 33: Maintenance & Troubleshooting

    Troubleshooting or disconnected. Follow this procedure in reverse order to re-secure the front cover. Conversion from 6755 to 6725 Maintenance All parts needed for this conversion are provided in Examine the rotating cell periodically for leaks by a 6729 Conversion Set.

  • Page 34: Technical Service

    6755 Maintenance & Troubleshooting Technical Service A Preperiod Timeout Has Occurred. The calorim- eter has failed to establish an acceptable initial Should you need assistance in the operation or temperature within the time allowed. Possible service of your instrument, please contact the causes for this error are listed below: Technical Service Department.

  • Page 35: Parts Lists & Drawings

    Parts Lists & Drawings haPter Parts Lists & Drawings Parts for the 6755 Solution Calorimeter Part No. Description A338CEB Stirrer Drive Motor Assembly 115V A338CEE Stirrer Drive Motor Assembly 230V A120C Calorimeter Cover with Stirrer Hub & Bearing Assembly 122C...

  • Page 36: 6755 Solution Calorimeter

    6755 Parts Lists & Drawings 6755 Solution Calorimeter 135C 135C DRIVE BELT DRIVE BELT A137C A137C 120C2 120C2 COVER W/(2) 121C COVER W/(2) 121C BUSHINGS BUSHINGS 343C2 343C2 COVER 328E COVER 328E HOLE HOLE PLUG PLUG (2) 328E (2) 328E...

  • Page 37: 6772 Calometric Thermometer Schematic

    Parts Lists & Drawings 6772 Calometric Thermometer Schematic A2140E I/O BOARD A2411E EXTENSION CABLE A2403E POWER CABLE ASSEMBLY PIN #1 A2166E I/O TO CPU USB CABLE ASSEMBLY (RED WIRE ON CABLE CONNECTS TO PIN #1) 2410E LCD TOUCHSCREEN 2401E SPLITTER CABLE PIN #1 A2402E SPEAKER CABLE ASSEMBLY...

  • Page 38: Internal Parts View Of 6772 Calorimetric Thermometer

    6755 Parts Lists & Drawings Internal Parts View of 6772 Calorimetric Thermometer 4X SA1140RP08 2X SN1140HLHJ A1821E A2167E 2395E5 CPU BOARD 4-40 X 1/2 RHMS 4-40 HEX LOCK NUT SPEAKER CABLE, USB 4X SA1140RP06 PHILLIPS NYLON INS ASSEMBLY PERIPHERAL 4-40 X 3/8 RHMS PHILLIPS...

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