700-570 - CRF-840 Rock-Fluid Centrifuge
Contents
1. OFITE Dependable Products From People You Trust CRF 840 Rock Fluid Centrifuge Part No 700 570 Instruction Manual Updated 7 13 2015 Ver 2 0 OFI Testing Equipment Inc 11302 Steeplecrest Dr Houston Texas 77065 U S A Tele 832 320 7300 Fax 713 880 9886 www ofite com Copyright OFITE 2015 Table of Contents EN 0 PPEAFERARE RE ER PETER SE ORRNETEFETSERERRORERRERPERFELEERENFER FSOFEREEREETSESERELFETFERER 2 DESELID ION cin nenne ran teren 2 SDECIHCALIONS ae 4 Components 4 Procede ee 5 Preparing the Test Cells uu 02200000002n002n0nnnnunannnannun nun 8 7ANSLSY 04 0 AY Kennen a re Oren En 8 CONTINING PI CSSUIC zu inner 12 FIOOGING TING COlC ae 14 Balance Eta RR ee Ine SSE ei 15 GENE ID TOO nee an EEO 16 SOW ee ee 17 TOSUIPIOD AI QU ON za a r N 21 ODUONS ea 23 PUTING seen 24 SUODE CAMO AON ea 26 PIXE CAI AUON ee een 28 AGT QING cane cate va ne a 29 Warranty and Return Policy cccccsscseseeeeeeeseeseeeseneseneeeeees 30 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Intro Description The OFITE Rock Fluid Centrifuge simulates the effects of gravity on a core sample Four test cells each hold a core sample The cells are mounted to a rotor which spins them at up to 5 000 RPM The centrifugal force pulls fluid out of or forces fluid into the core sample The flow of fluid is measured and re2. Drainage Locking Screw Mounting Bracket OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 6 Turn on the Main Power and Heat switches 7 Close the vacuum release valve vertical Then turn on the Vacuum switch 8 Prepare the software for your test See page 21 for instructions 9 Make sure the Emergency Stop button is pulled out 10 Click the Start Stop Test button to begin testing 11 When the test is complete use the software to stop the rotor See page 18 for instructions 12 Turn the Vacuum and Heat switches off 13 When the rotor has stopped spinning open the vacuum release valve horizontal This will slowly allow air back into the vacuum chamber 14 When the pressure gauge reads 0 open the vacuum chamber and remove the cells 15 Disassemble the cells and clean all components thoroughly OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Prepare a core sample 1 5 3 81 cm in diameter and up to 2 5 08 cm in length Preparing the Test Cells a Add enough rubber spacers to the core sample to make it s height 2 A Assembly small overshoot is acceptable Rubber Spacers Core Sample Plunger End Piece Spacers on Plunger End Piece 4 Place the plunger on top of the rubber spacers Plunger Plunger Assembly OFITE 11302 Steeplecrest Dr Houston TX
3. 6 Lower the handle slowly until the Core Holder Assembly has been completely removed from the cell Plug End Cap OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 16 To open the Rock Fluid Centrifuge software double click the icon on the Software computer desktop At the bottom of the screen are five tabs that provide access to different functions of the software The top portion of the screen remains the same regardless of which tab is showing Cell Data Shows a real time graph for each of the four test cells C1 Volume of fluid in the receiver C2 Volume represented by the floater or two phase interface C3 Volume of gas air in the receiver C4 Volume of the entire receiver Valid Scans Percentage of scans that were readable by the software Status Displays the current value of each of the test variables RPM The RPM gauge shows the RPM setpoint the value of the RPM Encoder and the RPM Servo The lines for the RPM Encoder and the RPM Servo should coincide Servo Online Turns green when the computer is successfully communicating with the motor Temp Online Turns green when the computer is successfully communicating with the temperature controller OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 17 Test Control Tab The Test Control Tab has controls for running an automatic test Test Header
4. These fields show test information you entered in the Test Setup screen Test Setup Button Click here to open the Test Editor See page 21 for more information about the Test Editor Start Stop Test Button Click this button to start a test Reset Decimation Button During a test the software periodically takes measurements and then delays for a period of time before measuring again This delay increases in length as the test progresses This is called Decimation The Reset Decimation button sets the decimation value back to its setting from the beginning of the test This will provide higher data resolution during that part of the test View Test Button Click this button to view the parameters of the current test You can also jump to the next step or jump back to the previous step in the test 250 i 1 1 00 00 00 00 05 00 00 10 00 00 15 00 Time Comments Button Click this button to open the Comments window Here you can enter comments during the test The software will automatically record the comments with a timestamp Test Setup This field shows the protocol specified in the Test Editor Rotor Type The cell orientation Drainage Imbibition chosen in the Protocol Editor Start Date The date and time the test was started End Date The date and time the test ended OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 18 RPM Setpoint If Manual Setpoints
5. 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 5 Push the core sample into the rubber sleeve Core Sample in Sleeve 6 On one end push the plunger assembly into the sample boot The plunger end piece should be touching the core sample 7 Press the core side end cap into the other end of the sample boot The surface should be touching the core sample There should be no empty space inside the sample boot Also the plunger should be flush with or extend slightly beyond the end of the Note sample boot If the plunger is recessed at all remove it and add more spacers Core Side End Cap Core Holder Assembly Plunger End Cap OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 8 Stand the test cell upright with the core side facing up Carefully lower the core holder assembly into the test cell with the plunger pointed down Use the Cell Cap Tool to firmly press it into the recessed space inside the cell See page 16 for more information Core Sleeve Assembly 9 Apply Never Seez to the threads on both the end of the test cell and the locking ring 10 Screw the locking ring in place on top of the end cap Use the supplied Spanner wrench Be very careful not to gall the threads If there is any resistance slowly unscrew the locking ring slightly and then try again Continue working the Note locking ring back and forth until it is comp
6. Pr re C3 Ga 17 5 12 57 10 5 a 1 5 ne EEE nn e EEE 2 57 o i 1 1 i U 0 1 1 U i 1 00 00 00 00 02 00 00 04 00 00 06 00 00 08 00 00 10 00 00 12 00 00 14 00 00 16 00 00 18 00 00 00 00 00 02 00 00 04 00 00 06 00 00 08 00 00 10 00 00 12 00 00 14 00 00 16 00 00 18 Test Time Test Time caz Hi of tum a ren T A OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 19 Detailed Test Data Tab The Detailed Test Data tab shows a detailed graph of one cell at a time This graph can plot C1 C2 C3 C4 RPM Offset Discriminator Strobe Voltage Valid Scans Total Scans Temperature Control RPM Control Temperature Setpoint and RPM Setpoint E Centrifuge 1 00 Eile Setup options about 1 Current Rotor 1 Drainage Rotor 2 f Strohe Light ON 2000 3000 W Automatic Test Started RPM Encoder Discriminator DAC 3 81 SSUU 1500 1 Discriminator DAC 3 659 Distr ninalur DAC 3 49 4UUU 4 RPM Servo Discriminator DAC 3 330 1500 0 Discriminator DAC 3 17V i 1 J n J i HU Discnminator DAC 3 U1V 5 9 s 10 18 20 gt Discriminator DAC 2 85V Cel 1 ml an Discriminator DAC 2 69 7 7 Discriminator DAC 2 537 al cz ce c4 vaidscans cl cz 3 vaid scans Discriminator DAC 2 37 21 00 mi 0 01 ml 0 00 mi 0 01 mi 0 00 21 13 ml 348 59 mi 0 00 r 345 59 Ml 0 00 Temp Discriminator DAC 2 21 Automatic Test Stopped 83 0 Current Rotor 1 Drainage Rotor
7. tells the software how many pixels represent a single mL of volume in the receiver tube To calculate this value use the Pixel Calibration described on page 28 Data Period Decimation During a test the software periodically takes measurements and then delays for a period of time before measuring again This delay increases in length as the test progresses This is called Decimation The Data Period Decimation is the initial delay interval This value must be between 1and2 A value of 1 will turn off decimation completely The software calculates the time of the next data collection using this equation Data Decimation Period 4n Where n is a sequential number For example if the Data Period Decimation is 1 25 the first data collection will be at 1 25 1 1 25 seconds The second collection will happen at 1 2542 1 56 seconds and the third will be at 1 253 1 95 seconds The interval between data collections will stop increasing when it reaches the Max Data Period see below Max Data Period This is the maximum interval the software will wait before collecting data This setting ensures the software continues to collect data with a maximum delay regardless of decimation Auto Inc Samp Cnt This field sets the number of samples that are collected in each data collection Eurotherm Device This number is set on the Eurotherm Nominal Heat up Rate C min Enter the approximate heat up rate of the instrument The software will
8. use this value to estimate the duration of a test Archive Path Select the folder to store test data 3 Click OK OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 23 S ft The Tuning tab has controls for adjusting the various instruments and running Ortware a calibration procedures This screen includes an oscilloscope image of the test Tuning data Adjusting the Tuning settings will affect the oscilloscope image 1 On the Test Control tab check the Manual Setpoint Mode box enter a speed in the RPM Setpoint field and hit Enter 2 Onthe Tuning tab click the Toggle Strobe button to turn on the strobe The oscilloscope will now display the image of the test cell Ta Run State Stop Auto Start Auto In Auto Mode the instrument automatically cycles the strobe light through each of the four test cells It also performs the decimation routine described on page 18 These two buttons turn Auto Mode on and off Toggle Strobe If Auto Mode is off this button will turn the strobe light on or off without decimation In this mode the strobe will only illuminate one cell Reset Decimation When Auto Mode is on decimation is being performed This button resets the decimation and returns it to its original value OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 24 Cells Select Ne
9. 3 Strobe Light ON Drainage Automatic Test Started _lImbibition Servo Onine Aulumatic Test Stopped Jstrohe Cal 9 Current Rotor 1 Drainage Rotor auto Test Strobe Light ON _JAuto Inc Temp Online Automatic Test Started Q AuitoTest Reset Decimation 10 i 2 5 N Cal Points AutoTest Reset Decimation lam Cel 1 Enable Autolest Reset Decimation Flcei 2 Enable AutoTest Reset Decimation Enable AuloTest Reset Decimation A Ei el Enable AutoTest Reset Decimation 5 33 ml 0 82 mi 13 54 ml 19 69 ml 97 60 1 4 10 ml 1 38 ml 14 20 mi 19 68 mh 90 16 9 AutoTest Reset Decimation K a a a a U a a a a a a a 1 7 i 1 1 1 00 00 00 00 01 00 00 02 00 00 03 00 00 04 00 00 05 00 00 06 00 00 07 00 00 08 00 00 09 00 00 10 00 00 11 00 00 12 00 00 13 00 00 14 00 00 15 00 00 16 Test Time alle Ham 8 pa Cell Selector Amplitude Bl yy r a E Test Time _Test Control Summary Test Data Detailed Test Data Tuning Diagnostics AuluTest Reset Decimation OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 20 Softwa re 1 Open the Rock Fluid Centrifuge software by double clicking the icon on the computer desktop Test Preparation 2 From the Test Control tab click the Test Setup button or select Test Editor from the Setup menu 3 Enter the test information in the fields on the left side of the screen This information is for display only It does not affect
10. 713 880 9886 www ofite com 25 In order to get a clear picture of the test cells the strobe must flash when the Software test cell is directly under the camera This timing can be affected when the Strobe Calibration instrument is moved or mechanical work is performed The Strobe Calibration will bring the timing back into alignment 1 2 Prepare the centrifuge for testing as described on page 5 On the Test Control tab turn on Manual Setpoints Mode enter a value in the RPM Setpoint field and hit Enter On the Tuning tab click the Toggle Strobe button to turn the strobe on Click the Calibrate Mode button In the ideal Oscilloscope image each of the four measurements C1 C2 C3 and C4 have well defined boundaries that are nearly vertical and the tops will be nearly horizontal TaI Fe 5 on i 4 Dira a E Aa 7 La i 0 5 IE Ah l 7 7 7 7 7 7 i F 3 7 4 f Click the Step Negative button until the image begins to visibly degrade 5 5 a 4 5 rd 3 5 a Is i TA T Ta ai 15 I I I I I l l l l l l 5 4 3 er 1 0 i 2 3 4 5 msec OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 26 6 Click the Mark Left Limit button 7 Now click the Step Positive button until the image begins to degrade in the other direction 8 Click the Mark Right Limit button 9 Click the Send to Ce
11. Ifthe Wait for Temp option is selected the centrifuge will wait until the temperature setpoint has been reached before beginning a test The Heat up RPM field specifies how fast the centrifuge will spin while waiting for the temperature g Click OK 5 Click OK i Protocol Editor 1 00 200 0 I 1 I I I I N 00 00 00 00 03 00 00 06 00 00 09 00 00 12 00 00 15 00 00 18 00 00 21 01 Time Time GB 28 2 RPM l RPM B L wawy Total Duration bed Ta 00 21 00 Protocol am Untitled2 Test pire RPM Steps Cell Position sfdgt 5 F Trial 11 March Duration RPM Drainage Short Step Test 00 03 00 65 Temperature 0 Be High Perm Duration RPM 00 03 00 100 New Duration RPM _ wait for Temp 00 03 00 250 Heat up RPM Duration RPM 0 00 03 00 400 7 5 Protocol Editor OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 22 Softwa re 1 Click the Options menu at the top of the screen Options 2 Enter the necessary information Cell Enables Choose the cells you intend to test with If you are only using two cells you can disable the other two to make data collection more efficient Comm Method Select OFIUSB Controller CommPort Select the COM port the controller is connected to RPM Conversion Factor Hz RPM This number will be set at the factory Do not change it unless directed to by OFITE Pixel Conversion Factor This value
12. Mode is selected this field sets the motor speed If Manual Setpoints Mode is not selected this field shows the current motor setpoint Temp Setpoint If Manual Setpoints Mode is selected this field sets the temperature If Manual Setpoints Mode is not selected this field shows the current temperature setpoint Manual Setpoints Mode If this option is selected the RPM Setpoint and Temp Setpoint fields can be used to manually control the motor and heaters Test Time The elapsed time since the test was started Estimated Completion This field is calculated based on the test setup Display Mode Select current to show the test information for the current test Select Archive to show test information from a previous test To load a previous test select Open from the File menu Current File The filename of the current test Archive File The filename of the previous test that has been opened Export Click this button to export the test results to Tab Separated Values TSV file This file format can be opened in MS Excel Summary Test Data Tab The Summary Test Data tab shows a summary graph for each of the four cells Each graph plots C1 C2 and C3 with respect to time o ation uTesl Reset Decimation 0 eset Decimation AutoTest Reset Decimation ur i i 1 D 1 i i 1 00 28 20 00 28 40 00 29 00 00 29 20 00 29 40 00 30 00 00 30 20 00 30 40 00 31 Test Time Test Tme alas i yao 1 i 230 130 31 Test Time Test Time alles a we
13. alves are in place before balancing 2 Weigh all four cells to the nearest 01 gram 3 Place the heaviest cell on the scale and tare it 4 Place each of the other cells on the scale one at a time and add weights until the scale reads 0 05 grams 5 Weigh each cell again Confirm that the weight of all four cells is within 03 grams The closer the cells are in weight the smoother the operation will be 6 Do not add any more weight to any of the cells after balancing OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 15 Preparing the Test Cells Cell Cap Tool The Cell Cap Tool is designed to help you easily insert and remove the Core Holder Assembly into the test cell Insert 1 2 Place the test cell on the Cell Stand Gently set the Core Holder Assembly into the test cell Attach the Cell Cap Tool to the top of the test cell Make sure the cell is centered in the device 4 Raise the handle and slowly press the Core Holder Assembly into the test cell until it is completely seated Remove 1 Place the test cell on the Cell Stand 2 Screw a plug into the end cap 3 Attach the Cell Cap Tool to the top of the test cell Make sure the cell is centered in the device ug 4 Raise the handle until the tool rests on top of the cell cap 5 Rotate the tool until the plug engages into the hole Then continue rotating it until it locks in place
14. arge valve into the port in the core side end cap and tighten it completely Loosen the top portion of the valve slightly to open the valve Charge Valve Fluid Return Valve Connect the pressure coupling to a pressure source and affix the open end over the charge valve Apply pressure to the cell until you start to see fluid discharging into the fluid side of the cell This means the core sample is fully saturated Release the pressure Tighten the top portion of the charge valve to close the valve and seal the test cell Remove the pressure coupling from the charge valve Set the Fluid Return Valve to the correct position for your test Drainage Open the Fluid Return Valve Make sure the hole is facing outward Imbibition Close the Fluid Return Valve Make sure the hole is facing inward OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 14 Preparing the Test Cells Balancing Important The test cells must be balanced before loading them into the centrifuge Ifthe cells are out of balance it could cause excessive vibration during testing and possibly damage the equipment The cells are weighted by attaching small washers to a screw on the end of the cell 3 N A Hi Screw With Washers 4 ns om 1 Load and assemble all four test cells Add confining pressure and if necessary flood the core Make sure the cell is sealed and all v
15. corded over time The Centrifuge consists of a rotor four test cells avacuum chamber a strobe light and a camera The rotor and cells are housed inside the vacuum chamber to reduce friction from air resistance The test cells consist of two chambers One chamber holds the core sample inside a rubber boot or sleeve Outside the sleeve the cell is capable of holding up to 3 000 PSI of confining pressure The second chamber holds a clear receiver tube to hold fluid A pair of windows in the receiver side of the cell allow the strobe light to illuminate the fluid inside A camera photographs the cells as they rotate and sends the data to a computer for analysis The test cell can be oriented on the rotor two ways When the core sample is oriented toward the rotor fluid will drain out into the receiver tube This is called a Drainage test When the core sample is oriented away from the rotor fluid in the receiver tube will be forced into the core sample This is called an Imbibition test As the rotor spins the camera photographs a single line of pixels for each cell Each pixel is classified as either light or dark A plastic disk floating on top of the fluid in the receiver tube provides contrast to the interface between the liquid and gas OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 2 The graph of the pixels looks similar to the image below Floater C1 the li
16. e company name phone number email address detailed description of work to be done purchase order number and a shipping address for returning the equipment All repairs performed as repair as needed are subject to the ninety 90 day limited warranty All Certified Repairs are subject to the twelve 12 month limited warranty Returns and potential warranty repairs require a Return Material Authorization RMA number An RMA form is available from your sales or service representative Please ship all equipment with the RMA number for returns or warranty repairs to the following address OFI Testing Equipment Inc Attn Repair Department 11302 Steeplecrest Dr Houston TX 77065 USA OFITE also offers competitive service contracts for repairing and or maintaining your lab equipment including equipment from other manufacturers For more information about our technical support and repair services please contact techservice ofite com OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 30
17. instructions Add confining pressure to the test cells See page 12 for instructions If necessary flood the core See page 14 for instructions Balance the test cells to prevent excessive vibration during rotation See page 15 for instructions 3 Load the test cells on the rotor a Choose the type of test to run For a Drainage test orient the cell so that the core side is closest to the rotor For an Imbibition test orient the cell so the receiver side is closest to the rotor Slide the cell into the rotor mount with the key pointed up and secure it firmly in place with the lock Lock Lock Drainage Test Imbibition Test OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 4 Close the door to the vacuum chamber and push the key forward into position Note 9 The Centrifuge will not operate if the key is not installed properly Sou gt Lock Key d 5 Adjust the camera The camera mount has two positions For drainage tests position the camera away from the rotor For imbibition tests position the camera close to the rotor a b Loosen the four locking screws two on each side of the camera Lift the camera up out of the mounting bracket Carefully lower the camera into the correct position in the mounting bracket Press the camera firmly down into the bracket Tighten all four locking screws Imbibition E Camera
18. letely tightened Do not use the locking ring to press the core holder assembly into the test cell This will damage the threads on the cell and locking Important ring Locking Ring OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 10 11 Turn the cell over so that the receiver side is pointing up 12 Place a greased o ring down into the retainer inside the cell Retainer 13 Carefully lower the receiver tube into the cell and gently press it into the retainer The retainer will center the receiver tube within the chamber while the o ring provides the seal 9 The receiver tube is very fragile Be very careful not to damage it Note 14 Place another greased o ring and retainer on top of the receiver tube This will center the tube within the chamber Receiver Tube Retainer O ring 15 Drop the floater into the receiver tube 16 For drainage tests add approximately 3 mL of fluid to the receiver side of the cell before testing This will ensure the floater is within view of the camera at the beginning of the test 17 Screw the end cap into the end of the test cell to seal the receiver side of the cell OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 11 Pre p ari ng th e For heated tests pre heat the cell to the test temperature before adding confining pressure This will prevent ove
19. lues and calculating the mean and standard deviation When all the data has been collected record the C1 Mean value On the Test Control tab enter O in the RPM Setpoint field and hit Enter Remove the cell from the centrifuge add a known amount of fluid to the receiver tube and place it back in the centrifuge Repeat steps 2 8 When all the data has been collected subtract the first C1 Mean from the second C1 Mean and divide the result by the volume that was added to the cell This will give you the Pixel Conversion Factor Click the Options menu Enter the Pixel Conversion Factor and click OK OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 28 Diagrams SS Locking Ring 700 570 021 End Cap Core Side O ring 700 570 030 700 570 020 Core Sleeve 700 570 027 Plunger End Piece Rubber Spacer EO ON Plunger O ring 127 20 004 700 570 018 Cell Body 700 570 015 Window O ring 700 570 031 5 Receiver Tube 700 570 017 C Retainer 700 570 028 End Cap Receiver Side CS 700 570 016 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 29 Warranty and Return Policy Warranty OFI Testing Equipment Inc OFITE warrants that the products shall be free from liens and defects in title and shall conform in all res
20. nter button This will center the strobe timing between the left and right extremes 10 Observe the Oscilloscope If the image appears to be of good quality click the Save Period button 11 On the Test Control tab enter a new value in the RPM Setpoint field and click Enter 12 Repeat steps 5 10 13 The Centrifuge requires at least two calibration points however more are acceptable Repeat this process with all the desired points 14 Click the Calc Fit button This will save the calibration and exit Calibration Mode OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 27 The Pixel Calibration provides a conversion factor from pixels to volume Software mL This value should then be entered into the Options screen so that the Pixel Calibration software can accurately calculate the volume 1 2 Prepare the centrifuge for testing as described on page 5 On the Test Control tab turn on Manual Setpoints Mode enter a value in the RPM Setpoint field and hit Enter Click the Pixel Calibration button Click the Toggle Strobe button to turn on the strobe Choose a cell to test Click the Select Next Cell button until that cell is selected Enter a number in the Number of Samples field A higher number of samples with give better results Click the Collect button The software will begin recording C1 C2 C3 and C4 va
21. pects to the terms of the sales order and the specifications applicable to the products All products shall be furnished subject to OFITE s standard manufacturing variations and practices Unless the warranty period is otherwise extended in writing the following warranty shall apply if at any time prior to twelve 12 months from the date of invoice the products or any part thereof do not conform to these warranties or to the specifications applicable thereto and OFITE is so notified in writing upon discovery OFITE shall promptly repair or replace the defective products Notwithstanding the foregoing OFITE s warranty obligations shall not extend to any use by the buyer of the products in conditions more severe than OFITE s recommendations nor to any defects which were visually observable by the buyer but which are not promptly brought to OFITE s attention In the event that the buyer has purchased installation and commissioning services on applicable products the above warranty shall extend for an additional period of twelve 12 months from the date of the original warranty expiration for such products In the event that OFITE is requested to provide customized research and development for the buyer OFITE shall use its best efforts but makes no guarantees to the buyer that any products will be provided OFITE makes no other warranties or guarantees to the buyer either express or implied and the warranties provided in this clause
22. quid in the tube C2 the floater C2 the gas air in the tube C4 the total of C1 C2 C3 As the test progresses and the fluid level changes C1 and C3 will also change The software will record these changes and draw a graph for each cell OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Specifications Components OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com Maximum Speed 5 000 RPM Maximum Temperature 200 F 93 3 C Optional Maximum Temperature 250 F 121 C Power Requirements 230 VAC 3 Phase Up to 30 Amp 230 VAC Single Phase 20 Amp 127 20 004 700 570 015 700 570 016 700 570 017 700 570 018 Plunger 700 570 019 Plunger End Piece 700 570 019 2 Spacer Rubber 700 570 019 4 Spacer Rubber 1 4 700 570 019 6 Spacer Rubber 700 570 020 End Cap Core Side 700 570 021 Locking Ring 700 570 024 Charge Valve Assembly 700 570 022 Valve Seat 700 570 023 Needle Valve 142 56 O ring 700 570 027 Core Sleeve 700 570 028 Retainer 700 570 030 O ring for Cell Body 700 570 031 O ring for Receiver Tube Inlet O ring Cell Body End Cap Receiver Side Receiver Tube Procedure 1 Prepare core samples 1 5 in diameter and up to 2 in length 2 Prepare the test cells a Assemble each of the four test cells with the core sample inside See page 8 for
23. r pressurization due to thermal Test Cells expansion Confining Pressure 1 Turn the cell so that the fluid side is pointing up 2 Screw a charge valve into one of the ports on the end of the cell and tighten it completely Leave the other port open for venting The two ports are interchangeable Charge Valve Open Valve 3 Loosen the top portion of the charge valve slightly This will open the valve 4 Connect the pressure coupling to a pressure source and affix the open end over the charge valve Charge Valve 4 Pressure Coupling Te ae 5 Slowly apply pressure to the test cell When the pressure medium begins venting from the other port stop adding pressure OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 12 6 Screw a plug valve into the second port and tighten it completely to seal the cell Charge Valve Open Valve 7 Apply up to 3 000 PSI 20 7 MPa to the test cell 8 Tighten the top portion of the charge valve to close the valve and seal the cell Remove the pressure coupling from the charge valve OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 13 Preparing the Test Cells Flooding the Core If the core is not already saturated it is possible to flood the core after it is loaded into the test cell Turn the cell so that the core side is pointing up Screw a ch
24. shall be exclusive of any other warranties including ANY IMPLIED OR STATUTORY WARRANTIES OF FITNESS FOR PURPOSE MERCHANTABILITY AND OTHER STATUTORY REMEDIES WHICH ARE WAIVED This limited warranty does not cover any losses or damages that occur as a result of Improper installation or maintenance of the products e Misuse Neglect e Adjustment by non authorized sources e Improper environment Excessive or inadequate heating or air conditioning or electrical power failures surges or other irregularities e Equipment products or material not manufactured by OFITE Firmware or hardware that have been modified or altered by a third party e Consumable parts bearings accessories etc Returns and Repairs Items being returned must be carefully packaged to prevent damage in shipment and insured against possible damage or loss OFITE will not be responsible for equipment damaged due to insufficient packaging Any non defective items returned to OFITE within ninety 90 days of invoice are subject to a 15 restocking fee Items returned must be received by OFITE in original condition for it to be accepted Reagents and special order items will not be accepted for return or refund OFITE employs experienced personnel to service and repair equipment manufactured by us as well as other companies To help expedite the repair process please include a repair form with all equipment sent to OFITE for repair Be sure to include your nam
25. the test procedure E Test Setup 1 00 Selected Protocol Name i v High Perm Protocol Editor RPM Steps Duration mn 00 03 00 Duration RPM 00 03 00 100 Total Duration Duration RPM C Wait for Temp 00 21 00 00 03 00 250 Heat up RPM j F Duration RPM 0 Estimated Completion 00 03 00 400 11 01 AM Thursday December 13 x 0 1 1 1 1 1 1 1 00 00 00 00 03 00 00 06 00 00 09 00 00 12 00 00 15 00 00 18 00 00 21 01 Time in glas meo Rem Ly RPM Warmup iF OK Cancel 4 Choose a protocol To create or modify a protocol click the Protocol Editor button a To modify an existing protocol select the name protocol name in the list on the left To create a new protocol click the New button b Enter a name in the Name field c Under RPM Steps select a duration HH MM SS and rotational speed Repeat this for each step in your protocol d Select a Cell Position Drainage The cell is positioned so that the receiver end is on the outside Fluid will drain out of the core sample during a test Imbibition The cell is positioned with the core sample on the outside Fluid will be forced into the core during a test e Choose a test temperature The maximum temperature is 200 F 93 3 C or 250 F 121 C if the centrifuge was purchased with the higher temperature option OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 21 f
26. xt When Auto Mode is off but the strobe is on only one cell is illuminated Click this button to cycle to the next cell Toggle Auto Inc When Auto Increment is on the strobe automatically through each of the four cells Strobe Delay Use these controls to synch the strobe with each of the four cells This will ensure a clear photo Step Negative Positive Adjust the timing of the strobe to fire earlier or later in the revolution Reduce Increase Step Change the size of each adjustment Strobe Voltage When testing very dark or very light fluids it may be necessary to adjust the strobe voltage Dark fluids may require a higher voltage to produce enough contrast Light fluids may need lower voltage to avoid washing out the image completely Discriminator The discriminator is a horizontal line on the Oscilloscope display Any pixels that show up above this line are considered to be light Any pixels below this line are dark Increase Decrease Use these buttons to move the discriminator based on the needs of your test When using a clear sapphire receiver tube use a lower strobe voltage 300V When using the polypropylene plastic receiver tube use the maximum voltage 600V Rotor Type Drainage Click this button if the cells are configured for drainage Imbibition Click this button if the cells are configured for imbibition OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax
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