OfiTE 171-00-2S User manual

2-Unit HTHP Filter Press
#171-00-2S - 115 Volt
#171-00-2S-1 - 200 Volt
Instruction Manual
Updated 6/14/2019
Ver. 3
OFI Testing Equipment, Inc.
11302 Steeplecrest Dr. · Houston, Texas · 77065 · U.S.A.
Tele: 832.320.7300 · Fax: [phone] · www.ote.com
©Copyright OFITE 2015

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 1
Intro..................................................................................................2
Specications .................................................................................2
Components ...................................................................................2
Safety...............................................................................................3
Setup................................................................................................4
Operation.........................................................................................5
Data................................................................................................12
Cell Cap Assembly .......................................................................13
Diagrams .......................................................................................14
Warranty and Return Policy ........................................................16
Table of
Content

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 2
The OFITE 2-Unit HTHP Filter Press Heat Jacket is designed to hold two,
500-mL HTHP test cells for simultaneous testing. Each cell has a separate
temperature controller and two pressure regulators (drive pressure and back
pressure) for independent testing.
Cell Size: 500 mL (Cells not included)
Maximum Temperature: 425°F (218.3°C)
Maximum Inlet Pressure: 3,000 PSI (20.7 MPa)
Maximum Drive Pressure: 1,350 PSI (9.3 MPa)
Maximum Back Pressure: 750 PSI (5.2 MPa)
Power Requirements: 115 VAC or 230 VAC congurations available
(power cord included)
Included:
#120-70-1-052 Hose, Stainless Steel, 18"
#130-81-015 Relief Valve
#130-81-028 Regulator
#152-37 AC Power Cord (115 Volt)
#152-38 AC Power Cord (230 Volt)
#153-14 Graduated Cylinder, 50 mL × 1 mL, Glass
#170-07 O-ring for Receiver Body
#170-19 Filter Paper, Specially Hardened for Filter Presses, 2.5"
(6.35 cm) Diameter, Box of 100
#170-20 Manifold Block
#170-93 Wrench for Valve Stem
#171-10 Back Pressure Receiver
#171-23-1 Safety Pin with Lanyard
#171-45-7 Thermocouple
#174-03 Temperature Controller
Test Cells:
Test cells are not included with the instrument. The following 500 mL cells are
available.
#171-19 Test Cell, for Filter Paper, Double-Capped,
#171-20 Test Cell, for Filter Paper, Single Cap
#171-191-S Test Cell, Threaded, (For Mud Testing)
#171-192-S Test Cell, Threaded (For Cement Testing)
Accessories:
#170-13-3 O-ring for Test Cell, Viton®/Fluorocarbon (FKM)
#170-16 Valve Stem
#170-17 O-ring for Valve Stem, Viton®/Fluorocarbon (FKM)
#170-26-1 Locking Screw, Hardened Alloy Steel
Nitrogen must be supplied in an approved Nitrogen Gas Cylinder and
secured to meet safety standards.
Intro
Specications
Components

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 3
Safety Due to the high temperatures and pressures involved in this test, extreme
care must be exercised at all times. All safety precautions must be met,
especially in the cell breakdown procedure after the ltration procedure has
been completed.
Cell Corrosion
Test uids under high tempreature and pressure can corrode the cell body
and caps. Carefully inspect the cell body and calls for corrosion before and
after each test.
Some materials are more susceptible to corrosion than other. Also, some
uids and additives are more corrosive than others. OFITE offers a variety of
cell materials for different levels of corrosion resistance and cost.

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 4
Setup 1. Remove the instrument from the crate and place it on a at, stable
surface.
2. Turn off the Nitrogen valve (horizontal). Turn off the main power switch
and both heat switches. Make sure all regulators are backed off
completely. Turn them completely counterclockwise.
3. Connect a Nitrogen source to the back of the unit. The inlet connector is
¼" NPT.
4. On the back of the unit is a power inlet congured for 115 VAC or 230
VAC. Plug the supplied power cord into an appropriate power source.
- #171-00-2S: 115 VAC, 50/60 Hz
- #170-00-2S-1: 230 VAC, 50/60 Hz

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 5
Operation Although both test cells share a single Nitrogen source, they each have two
regulators for adjusting drive pressure and back pressure. Each cell also has
a separate temperature controller.
There is one main power switch on the right of the instrument.
The valve on the front controls the ow of Nitrogen pressure to the regulators.
When the valve is horizontal, the pressure is turned on. When it is vertical,
the pressure is turned off.
1. Before starting a test, make sure the Nitrogen valve is off (vertical).
Turn off the main power switch and both heat switches. Make sure
all regulators are backed off completely. Turn them completely
counterclockwise.
2. Plug the lter press into an appropriate power source and turn the main
power switch on.
3. Press the up and down arrows on the temperature controller to set the
desired test temperature.
4. Turn the heat switch on. Each cell has a separate heat switch.
The Eurotherm will display “OPI” when the heaters are engaged.
5. Be sure all of the o-rings are in good working condition (pliable with
no nicks or cuts, etc.), and are not damaged during the assembly
procedures. Place a thin lm of silicone grease on all o-rings.
Nitril-NBR (Buna N) o-rings (#170-13) are recommended for tests up to
250°F (121°C). For tests up to 400°F (204°C), Fluorocarbon/FKM (Viton®)
o-rings (#170-13-3) are recommended. For tests up to 500°F (260°C),
Peruorocarbon (FFKM) o-rings are recommended. Also, for tests with
water-based uids containing no hydrocarbons, Ethylene propylene
(EPM/EPDM) o-rings may be used up to 400°F (204°C).
Temperature
Controller
Thermocouple
Main
Power
Drive
Pressure
Regulator
Heat Switch
Nitrogen Valve Back Pressure Regulator

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 6
6. If the cell caps are not already assembled, see page 13 for assembly
instructions.
7. Inspect the cell cap and cell body. Discard any components that show
signs of corrosion, damage, or wear.
8. Inspect all o-rings. Replace any that show signs of damage or wear.
Looks for nicks, cuts, or brittle o-rings. Replace all o-rings after any test
above 350°F (176.7°C). Place a thin lm of silicone grease on all o-rings.
O-ring
Valve Stem
(#170-16) O-ringO-ring
9. Place an o-ring (#170-13-3) on the shoulder inside the cell body on the
end marked “In”. Place another o-ring in the groove around the cell cap.
10. For Cement Testing, place a cement screen on top of the o-ring.
11. Screw the inlet cell cap into the cell body.
12. Place an o-ring in each of the two o-ring grooves on both valve stems.
13. Screw one valve stem into the inlet cell cap. Tighten the valve stem
completely.
To increase the life of the valve stem and cap, apply a thin layer of high-
temperature thread lubricant (#165-44-1) to the tip of the valve stem.
Cement Screen
(#170-18)

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 7
14. Prepare the test uid.
15. Invert the cell body and carefully pour the sample into the cell. Leave
enough void space for thermal expansion (see chart below).
Be careful not to spill uid on the o-ring shoulder inside the cell.
16. Place an o-ring in the cell and another on the cell cap.
17. Place a circle of lter paper, ceramic disk, or cement screen on top of the
cell o-ring. Gently push the paper or disk downward so it contacts the
o-ring without the paper binding or pinching.
18. Screw the outlet cap into the cell body.
19. Screw the other valve stem into the outlet cell cap and tighten it
completely.
20. Invert the cell and place it in the heating jacket with the outlet (lter) side
pointed down. Rotate the cell in the heating jacket so that the pin in the
bottom of the heating well seats into the hole in the bottom of the test
cell. This will anchor the cell in the well and prevent it from rotating as the
valve stems are opened and closed.
21. Move the thermometer from the heating jacket to the hole in the test cell.
Allow the cell to heat for one hour. Start a 60 minute timer now.
API Recommended Void Space
Fluid / Temperature Void Space Fluid Volume
Water-based drilling uid. < 300°F 0.6" (1.5 cm) 405 mL
Water-based drilling uid. > 300°F 1.5" (4.0 cm) 353 mL
Oil-Based Drilling Fluid. Any temperature. 1" (2.5 cm) 382 mL
Cement, Any Temperature 2" (5.1 cm) 324 mL

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 8
Relief Valve
(#170-32)
Manifold Block
(#170-20)
Valve Stem
(#170-16)
Retainer Pin
(#171-23-1)
Retainer Pin
(#171-23-1)
Valve Stem
(#170-16)
Back Pressure
Receiver Body
(#171-10)
Relief Valve
(#120-85-017)
22. Connect the Nitrogen hose on top to the top valve stem and lock it in place
with the safety pin. Place the back pressure receiver on the bottom valve
stem and lock it in place with the safety pin.
The safety pin includes an attached lanyard. The lanyard secures the pin
and prevents it from accidentally disengaging from the valve stem and
pressure assembly. Always secure the pin with the lanyard.

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 9
Recommended Minimum Back Pressure
Test Temperature Vapor Pressure Minimum Back Pressure
°F °C psi kPa psi kPa
200-299 95-149 12.1-67 84-462 100 700
300-374 150-189 67-184 462-1269 200 1400
375-399 190-199 184-247 1269-1704 275 1900
400-424*200-219 247-326 1704-2245 350 2500
425-450*220-230 326-422 2245-2912 450 3100
*For tests above 400°F, use Peruorocarbon (FFKM) o-rings
23. Connect the bottom pressure hose to the back pressure receiver (if it is
not already connected). Make sure the needle valve on the back pressure
receiver is closed.
24. Unscrew the bottom back pressure regulators (counterclockwise) to make
sure both regulators are completely closed.
25. Connect a Nitrogen cylinder (at least 1,500 PSI) to the inlet on the back
of the lter press. Open the pressure release valve on the nitrogen bottle
and note the bottle pressure as registered on the gauge.
26. Keeping the valve stems closed, turn the Nitrogen ball valve on and
adjust the top and bottom regulators to the recommended back pressure
for your test (see chart below). Make sure the bleeder valves are closed.
The upper and lower limits of the test pressure differential are determined
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
ltrate. 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.

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 10
27. Open (loosen) the top valve stem ½ turn to pressurize the sample.
Maintain this pressure on the uid until the temperature has stabilized.
28. After the one hour heat up time, increase the pressure on the top
pressure unit to 500 PSI (3,448 kPa) more than the back pressure.
29. Open (loosen) the bottom valve stem ½ turn to initiate ltration as soon as
possible.
Monitor the pressure gauges closely. If at any time during the test the
pressure inside the cell rises above the setpoint, carefully open the
needle valve on the manifold block just enough to bleed off the excess
pressure. Then close the valve. If the cell pressure decreases due to
collection of ltrate, increase the pressure with the top regulator.
30. To collect ltrate, carefully open the valve on the bottom of the back
pressure receiver while holding a graduated cylinder up to the valve port.
Close the valve immediately after the pressure begins to decrease and
the ltrate is collected.
Collect ltrate at 10 seconds, 1 minute, 7.5 minutes, and 30 minutes.
The initial 10 second collection is precautionary in nature, as a uid with
little ltration properties may ll up the receiver tube almost immediately,
potentially damaging the regulator. Do not record the 10 second collection
as a separate notation, but do record the volume collected at the other
time intervals.
While collecting ltrate, maintain the test temperature within ± 5°F (±3°C).
If the back pressure rises during the test, cautiously reduce the pressure
by opening the valve on the receiver and drawing off some of the ltrate
into the graduated cylinder.
31. At the end of the test, close (tighten) the top and bottom valve stems to
seal off the cell.
Failure to close the valve stems before releasing pressure will
damage a regulator by drawing uid into it.
32. Slowly turn the regulators counterclockwise to close off the ow of
pressurized gas.
33. Open the outlet valve on the back pressure receiver to collect all of the
remaining ltrate.
34. Open the bleeder valve on the manifold block to release any remaining
pressure in the line.
35. Remove the manifold block and the back pressure receiver. Drain any
residual ltrate from the receiver into the graduated cylinder.

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 11
The heating jacket will still be very hot. Be careful not to touch it while
removing the back pressure receiver.
36. Remove the cell from the lter press after once again checking that the
valve stems are tightly closed. Allow the cell to cool to room temperature.
An optional Cell Carrying Tool (#170-40) makes this a simple and safe
operation.
The test cell will still be under approximately 600 PSI (4.140 kPa) of
pressure. To avoid possible injury, keep the cell upright and cool it to
room temperature before disassembling. The cell must be cool for at least
one hour at room temperature before loosening the locking screws and
removing the cell cap.
37. Using extreme care to save the lter cake, place the cooled cell upright
with the outlet side down. Slowly open (loosen) the inlet valve stem to
bleed off pressure from the cell body.
Pressure cannot be relieved from the cell by opening the outlet valve
stem as the lter cake will seal off the cell. It is a good idea to open the
valve stem with the cell inside a sink or with a rag over the valve stem in
order to catch any liquid that might be ejected.
38. Once the pressure is released, tighten the valve stem again to keep the
uid inside. Then turn the cell over.
39. Loosen the valve stem and unscrew and remove the outlet cell cap. Use
the supplied cell cap wrench to loosen the threads.
If the cell cap is difcult to unscrew, the pressure port may be clogged.
Use the HTHP Pressure Relief Tool (#170-91) to clear the obstruction.
40. Carefully remove the lter paper or ceramic disk and deposited cake. Be
careful not to damage the lter cake. Carefully wash any residual uid
from the surface of the lter cake.
41. Pour out the test uid.
42. Clean and dry the apparatus thoroughly after each use. Inspect all of the
o-rings and replace any that show signs of wear or damage.

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 12
Data Filtrate Volume
The HTHP lter press has a ltration area of 3.55 in2(22.9 cm2). This is half
the area of a standard ltration test, which is 7.1 in2(45.8 cm2). To compare
the results of this test to a standard ltration test, you double the total ltrate
volume collected.
VS= 2 (V30)
Spurt Loss (Optional):
Spurt Loss is the amount of ltrate collected before the lter cake has had a
chance to form and is expressed in millimeters. To calculate the spurt loss,
use the following equation:
V1= 2 [V7.5- (V30 - V7.5)] = 2 (2V7.5 - V30) = 4V7.5 - 2V30
Where:
Vs= Standard Filtrate Volume (mL)
V1= Spurt Loss
V7.5 = Filtrate volume collected after 7.5 minutes (doubled)
V30 = Filtrate volume collected after 30 minutes (doubled)
Filter Cake
Wash the lter cake on the paper with a gentle stream of water. Measure
and report the thickness of the lter cake to the nearest 1/3 2 in (0.8 mm). A
ruler with the “zero mark” at the very edge of the ruler is useful here. Cake
descriptions may be subjective and such notations such as hard, soft,
rubbery, and ne, etc. convey adequate information on cake quality.

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 13
Cell Cap
Assembly
1. Choose the appropriate cap for your test:
- 171-190-030-S - Outlet Cap, 60 Mesh
- 171-190-031-S - Inlet Cap, 60 Mesh
- 171-190-032-S - Outlet, for Cement
- 171-190-033-S - Inlet, for Cement
- 171-190-034-S - Outlet, Cap for Ceramic Disk
2. Place the locking ring (#171-190-023) around the cap.
3. Place the retaining ring (#130-81-040) into the groove around the outside
of the cap. Make sure it engages completely around the circle.
The cap should turn freely inside the locking ring.
4. Place an o-ring in the port in the cap. Wrap a rupture disk (#171-190-027)
with nickel anti-seize tape (#171-190-040) and screw it into the port.
Rupture Disk
(#171-190-027)
Retaining Ring
(#130-81-040) Cap
Locking Ring
(#171-190-023)
Rupture Disk
O-ring
Cap
Retaining Ring
Locking Ring

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 14
Diagrams
Locking Ring
(#171-190-023)
Retaining Ring
(#130-81-040)
Inlet Cap for Drilling Fluids
(#171-190-031-S)
Cell Body
(#171-190-020-S)
Outlet Cap for
Filter Paper
(#171-190-030-S)
Outlet Cap for
Filter Paper
(#171-190-030-S)
Retaining Ring
(#130-81-040)
Locking Ring
(#171-190-023)
#171-191-S - Test Cell, Stainless Steel (For Mud Testing)

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 15
Locking Ring
(#171-190-023)
Retaining Ring
(#130-81-040)
Inlet Cap for Drilling Fluids
(#171-190-031-S)
Cell Body
(#171-190-020-S)
Outlet Cap for Cement
(#171-190-032-S)
Retaining Ring
(#130-81-040)
Locking Ring
(#171-190-023)
Cement Screen
(#170-18)
Cement Screen
(#170-18)
#171-192-S- Test Cell, Stainless Steel (For Cement Testing)

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 16
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 respects to the terms of the sales order and the specications 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 specications applicable thereto, and OFITE is
so notied 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 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
• Misuse
• Neglect
• Adjustment by non-authorized sources
• Improper environment
• Excessive or inadequate heating or air conditioning or electrical
power failures, surges, or other irregularities
• Equipment, products, or material not manufactured by OFITE
• Firmware or hardware that have been modied or altered by a third party
• 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 insufcient 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 name, 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 “Certied 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@ote.com.