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OfiTE MB HTHP, Instruction Manual

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OfiTE MB HTHP Instruction Manual Download Page 10

6. If you will be operating above 200°F (93.3°C), place the back pressure

receiver on the bottom valve assembly in the same manner.

7. Remove the CO

2

cartridge holder from both the top pressuring assem-

bly and the back pressure receiver.  Make sure both regulator T-screws
are unscrewed completely and the needle valves are completely
closed.  Place a CO

2

cartridge in each holder and screw the holder onto

the pressuring assemblies until the cartridges puncture.  If the red relief
valve on the backpressure receiver is not already pulled out, pull it out
now.

8. Keeping the test cell valves closed, adjust the top and bottom regula-

tors to the recommended back pressure for your test.  Open the top
valve one full turn to pressurize the sample.  This pressure will mini-
mize boiling while the sample is heating.  Maintain this pressure on the
fluid until the desired temperature is stabilized, as indicated by the ther-
mometer.  The heating time of the sample should never exceed one
hour.

The upper and lower limits of the test pressure differential are deter-
mined by the test temperature.  As this temperature exceeds 212°F
(100°C), the back pressure must be increased in order to prevent
vaporization of the filtrate.  The 500 PSI differential pressure must be
maintained, so the top pressure will have to be increased accordingly.
The table below shows the pressures recommended for various test
temperatures.

9. When the fluid sample reaches the desired test temperature, increase

the pressure on the top pressure unit to 500 PSI (3,447.5 kPa) above
the back pressure.  Open the bottom valve to initiate filtration and begin
timing. 

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

9

Note

Recommended Minimum Back Pressure

Test Temperature

Vapor Pressure

Minimum Back Pressure

°F

°C

PSI

kPa

PSI

kPa

212

100

14.7

101

100

690

250

121

30

207

100

690

300

149

67

462

100

690

350

177

135

932

160

1,104

400*

204

247

1,704

275

1,898

450*

232

422

2,912

450

3,105

500*

260

680

4,692

700

4,830

*For tests above 400°F, use Teflon o-rings.

Summary of Contents for MB HTHP

Page 1: ...5V 171 51 230V For temperatures up to 350 F 177 C Instruction Manual Updated 5 6 2011 Ver 2 1 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 2011 ...

Page 2: ...Table of Contents Intro 2 Specifications 2 Components 3 Safety 6 Procedure 7 OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 1 ...

Page 3: ...cell a pressurized collection cell able to maintain proper back pressure in order to prevent flashing or evaporation of the fil trate and a suitable stand Size 19 x 21 x 28 49 x 54 x 72 cm Weight 40 lbs 18 2 kg Shipping Size 23 x 13 x 13 59 x 33 x 33 cm Shipping Weight 50 lbs 22 8 kg Maximum Temperature 350 F 176 C Maximum Pressure 1 500 PSI 10 342 5 kPa Pressure Source 2 CO2 Cartridges Test Cell ...

Page 4: ...rtridge 144 15 Plated Brass Bushing NPT Male to 1 8 NPT Female Qty 2 170 34 x NPT Male Needle Valve 171 53 High Pressure Regulator 171 73 1 1000 PSI Gauge 1 8 Bottom 1 Face 171 74 1 2000 PSI Gauge 1 8 Bottom 1 Face 171 76 Female Coupling for Top Valve 171 77 Coupling Ring for Top Valve 171 58 HTHP Complete Back Pressure Receiver 142 37 Victor Regulator 142 58 O Ring for HTHP Coupling 142 61 200 PS...

Page 5: ... 1 HTHP Heating Jacket and Stand 230V 142 58 O ring for HTHP Coupling 164 32 Male Connector for Power Cable 230V 165 40 2 18 Gauge Cable 3 Conductor SJ00W Qty 8 170 07 O Ring 170 11 Heating Element 115V 200W Qty 4 171 54 Fuse 171 59 Stand Base and Leg 171 59 1 Micarta Insulator Strip 171 61 Heating Block Jacket 171 63 Dial Plate for Thermostat 171 65 Fuse Block 171 67 Thermostat Knob 171 68 Red Pi...

Page 6: ...Regulator Qty 2 153 16 Glass Graduated Cylinder 25 mL x 2 10 mL Qty 2 153 55 Silicone Stopcock Grease 150 g Tube Qty 2 154 10 Dual Scale Thermometer with Metal Dial 5 Stem 50 500 F 0 250 C 170 07 O ring Qty 2 170 11 200 Watt Heating Element 115V Qty 4 170 19 2 6 35 cm Filter Paper Specially Hardened for Filter Presses Qty 10 171 52 O ring 2 5 16 x 2 x 3 32 Qty 12 171 54 Fuse 171 67 Thermostat Knob...

Page 7: ... pressurization may cause an explosion Do not use nitrous oxide cartridges as pressure sources for high tem perature high pressure HTHP filtration Under high temperature and pressure nitrous oxide can detonate in the presence of grease oil or carbonaceous materials Nitrous oxide cartridges are to be used only for Garrett Gas Train Carbonate Analysis Due to the high temperatures and pressures invol...

Page 8: ...arefully pour the test fluid into the cell body Leave at least 0 5 13 mm of empty space below the o ring groove to allow for heat expansion of the fluid Do not spill fluid on the o ring inside the cell 3 Place a circle of filter paper in the groove and place an o ring on top of the paper Place the cell cap into the cell and twist it into position so the cap locking screws will fasten to the wings ...

Page 9: ... o ring but do not seal up the hole with grease Connect the pres suring assembly to the top male slip coupling by lifting the lock ring and sliding the pressure assembly onto the male coupling Release the lock ring and the top pressure assembly has been installed OFITE 11302 Steeplecrest Dr Houston TX 77065 USA Tel 832 320 7300 Fax 713 880 9886 www ofite com 8 Locking Ring Male Coupling 171 64 Bac...

Page 10: ...ing time of the sample should never exceed one hour The upper and lower limits of the test pressure differential are deter mined by the test temperature As this temperature exceeds 212 F 100 C the back pressure must be increased in order to prevent vaporization of the filtrate The 500 PSI differential pressure must be maintained so the top pressure will have to be increased accordingly The table b...

Page 11: ... the pressure assembly off the cell coupling Remove the cell from the heating jacket and allow it to cool to room temperature or quick cool the cell by immersing it in cool water Keep the cell in an upright position during this procedure When the cell has cooled slowly open the two needle valves to bleed off the cell pressure Pressure inside the sample cell will still be approximately 500 PSI 3 45...

Page 12: ...t Light 171 69 Thermostat Cover 171 70 1 Male Needle Valve 171 80 Male Coupling 171 64 Back Pressure Receiver 171 75 Thermostat Dial Plate 171 63 2000 PSI Gauge 171 74 1 Graduated Cylinder 153 16 Stand and Base 171 59 Victor Regulator 142 37 Safety Bleeder Valve 143 06 CO2 Cartridge Barrel 143 03 200 PSI Gauge 142 61 1000 PSI Gauge 171 73 1 Bushing 144 15 Victor Regulator 171 53 Male Needle Valve ...

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