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OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com

22

Testing

Starting the Test

Refer to the diagram on page 2 for a visual explanation of the test.

1.  Open the Air Supply valve at the bottom of the control panel.

2.  Once again, make sure the valve stem on the bottom of the test cell is 

closed.

3.  Close the “Nitrogen/Gas Pressure Valve” (see picture on page 19) by 

turning the valve handle perpendicular to the hose it is attached to.

4.  If your test requires a temperature setting above 180°F (82°C), pre-heat 

the cell to 180°F (82°C) before adding pressure. Then, when the pressure 

is set, increase the temperature to the desired level.

To set the temperature, go to the main software screen and enter a 

value in the “Temperature Setpoint” field. Then click the “Heat On” 

button to activate the heater. The “Heat Power” switch on the unit 

must be on. Before heating the cell, make sure the Cooling valve is 

closed.

If your test requires a temperature setting below ambient, set the 

temperature in the software to 0, turn on the chiller, and open the Cooling 

valve. The cell temperature must be controlled on the chiller, not the 

software.

5. 

Set the back flow pressure. (300 PSI recommended)

6.  Next, Set the hydrostatic pressure. Slowly turn the regulator clockwise 

until the desired pressure is reached. (1,000 PSI recommended)

The hydrostatic pressure must always be at least 200 PSI above the 

Nitrogen pressure. Failure to do so could damage the equipment.

7.  Finally, set the nitrogen pressure. (500 PSI recommended)

8.  Turn the LVDT so that the transducer rod is sitting on top of the piston 

rod. Lower the LVDT unit until the transducer rod is all the way in the up 

position.

9.  Once the LVDT is in position, tighten the locking screw. Then zero the 

software by clicking the “Zero Piston Distance”, “Zero Gas Volume”, and 

“Zero Filtrate Volume” buttons on the main software screen.

10. 

Click the “Start Test” button. Confirm that the test information is correct.

11. Open the “Nitrogen/Gas Pressure Valve”.

12. Slowly open the valve stem on the bottom of the test cell one quarterturn.

13. Once the test begins, the PC will begin to display data on the main 

software screen.

Summary of Contents for 120-57

Page 1: ...120 57 115 Volt 120 57 1 230 Volt Instruction Manual Updated 3 25 2020 Ver 3 OFI Testing Equipment Inc 11302 Steeplecrest Dr Houston Texas 77065 U S A Tele 832 320 7300 Fax 713 880 9886 www ofite com...

Page 2: ...tion 2 Specifications 3 Components 4 Installation 6 Setup 7 Software 9 Setup 9 Operation 10 Calibration 11 Assembly 14 Setup 14 Test Cell 15 Installing the Test Cell 20 Testing 22 Starting the Test 22...

Page 3: ...lar well A test cell is filled with a cement slurry and placed into a heating jacket The test cell is fitted with a piston above the slurry and a screen below A back pressure regulator below the test...

Page 4: ...Fax 713 880 9886 www ofite com 3 Specifications Maximum Temperature 400 F 204 4 C Maximum Pressure 2 000 PSI 13 790 kPa Crated Size 43 36 48 inches 109 2 91 4 121 9 cm Crated Weight 469 lb 212 7 kg V...

Page 5: ...en 325 Mesh with 60 Mesh Backup Optional 120 57 SP Spare Parts for 120 57 120 57 01 Screen 325 Mesh Qty 20 120 57 02 Screen 60 Mesh Qty 10 120 57 03 Piston Seal Qty 6 120 57 04 O ring for Screen Qty 6...

Page 6: ...ement Transducer Test Cell Assembly Pressure Transducer Thermocouple Pressure Relief Valve Backflow Pressure Nitrogen Gas Pressure Hydrostatic Pressure Thermocouple Heating Jacket Valve Stem Top Filtr...

Page 7: ...he AC power cord into an appropriate outlet 3 Connect a nitrogen air supply at least 1 000 PSI to the back of the unit via the top female NPT port 4 The Coolant In and Coolant Out ports on the back co...

Page 8: ...C to boot 4 Connect the back pressure regulator to the Backflow Pressure port on the unit cabinet via the quick connect hose 5 Attach the tube to the back pressure regulator and feed it through the ho...

Page 9: ...receiver From there it is emptied into the filtrate flask The filtrate will then be weighed by the load stand while the gas will be pushed into the water collection flask In the water collection flask...

Page 10: ...file is updated Pressure Unit Choose either PSI or MPa Temp Unit Choose either Deg F or Deg C Distance Unit Choose either Millimeter or Inches Archive Path The location of the data file Print to Prin...

Page 11: ...is important to prepare the software for testing 1 Open the software by double clicking the icon on the desktop 2 From the Utilities menu select Load Sample Infos Give the test a name The name will pr...

Page 12: ...Stores the calibration values in memory 2 Choose the device to be calibrated from the Variable drop down list a Sample Temp and Cell Temp i Before calibrating either temperature set the temperature un...

Page 13: ...re calibrating the piston location set the Distance Units to mm Refer to page 9 for instructions ii Turn the LVDT so that the transducer rod is touching the heating jacket iii Lower the LVDT all the w...

Page 14: ...tabilized click the High button vi Click the Store Cal button to save the calibration data e Pore Pressure i Release all pressure from the system ii Enter 0 in the Value Low field Once the Raw Value h...

Page 15: ...ace inside with high temperature grease Replace the transducer then open the relief valve and fill the remaining space Close the relief valve 2 Remove the thermocouple and inject the grease directly i...

Page 16: ...Place the screens inside the bottom of the piston over the o ring The screen with the tighter mesh goes on the outside c Screw the brass retainer ring in place securing the screen and o ring Do not ov...

Page 17: ...the piston rod Leave about space between the connector and the end of the rod O ring Autoclave F250C Connector Bottom Autoclave F250C Connector Top Piston Rod Inlet Cap Seal Plug Locking Ring 6 Place...

Page 18: ...o the groove inside the top of the test cell 10 Press the spacer down around the top of the piston Then slide the piston assembly into the top of the test cell The spacer will stay at the top while th...

Page 19: ...out of the hydrostatic pressure port Cap both the hydrostatic port on inlet cap and the nitrogen port on the piston rod to prevent oil from leaking out 13 Turn the cell over and pour in the cement sl...

Page 20: ...bottom of the test cell 15 Place the screen on top of the o ring with the flat side facing down 16 Place another o ring on top of the screen 17 Screw the bottom cell cap into the cell and tighten comp...

Page 21: ...e side of the cell slide into the notch on the side of the heating jacket 2 Plug the sample thermocouple and pressure transducer into the appropriate ports on the unit cabinet to the left of the heati...

Page 22: ...ermocouple into the hole on the top edge of the test cell 6 Attach the back pressure regulator to the valve stem via the quick connect port 7 In order to get accurate readings from the load cell it is...

Page 23: ...g below ambient set the temperature in the software to 0 turn on the chiller and open the Cooling valve The cell temperature must be controlled on the chiller not the software 5 Set the back flow pres...

Page 24: ...uitable container underneath the Top Filtrate drain Slowly open the Top Filtrate valve 9 Slowly open all of the bleed valves on the right hand side of the control panel and place the Air Supply valve...

Page 25: ...ct the unit to the Back Flow Pressure via the quick connect hose Attach the hose to the same port that was previously connected to the valve stem on the test cell c Close the Back Flow Pressure bleed...

Page 26: ...tware 16 Under Directories choose the year and month of the test you want to open For example a test run in January of 2010 will be labeled as 2010 Month01 17 Under tests choose the test you want to o...

Page 27: ...l so that it sits on top of the cement If the piston does not extend above the top of the cell try the next longest piston 4 Carefully hit the piston with a hammer The cement plug may fall out of the...

Page 28: ...1 Cell Cap Inlet 4 170 13 3 O ring for Test Cell Qty 3 5 120 57 05 Rod Seal 6 120 57 16 Seal Plug 7 170 77 O ring 8 170 72 Spacer 9 120 57 14 Piston Seal Screw Ring 10 120 57 03 Seal Ring 11 120 910 0...

Page 29: ...ny losses or damages that occur as a result of Improper installation or maintenance of the products Misuse Neglect Adjustment by non authorized sources Improper environment Excessive or inadequate hea...

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