Ofite 120-58 Static Gel Strength Measurement Device Instruction manual

Static Gel Strength Measurement Device
Patent No. 9,612,232 - OFI Testing Equipment, Inc.
#120-53 - Low Pressure, 5,000 PSI
#120-58 - High Pressure, 20,000 PSI
Instruction Manual
Updated 4/21/2017
Ver. 8.0
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
Intro...................................................................................................2
Description.......................................................................................2
Features...........................................................................................2
Specifications..................................................................................3
Components.....................................................................................3
Safety................................................................................................5
Quick Start.......................................................................................6
Setup.................................................................................................7
Hardware.....................................................................................7
Software.......................................................................................8
Software.........................................................................................10
Temperature Profile Builder.......................................................14
Operation...................................................................................15
Calibration Archives...................................................................17
Operation .......................................................................................19
Cell Cap Assembly.....................................................................19
SGSM Drag Check....................................................................27
Preparing the Test Cell...............................................................28
Connecting the Cell....................................................................29
Starting the Test.........................................................................31
Stopping the Test.......................................................................32
Evaluating Test Data..................................................................33
Removing the Test Cell..............................................................34
Maintenance ..................................................................................35
Disassembling and Cleaning the Test Cell.................................35
Changing a Fuse........................................................................41
Appendix .......................................................................................42
Filling The Cell...........................................................................42
Magnet Positioning....................................................................43
Calibration - Old Style................................................................44
SGSM Cell Cap Assembly.........................................................45
Calibration - New Style..............................................................49
Maintenance Schedule..............................................................51
Multiple Instruments...................................................................52
Manual Temperature Control ....................................................53
Electrical System Grounding......................................................56
Troubleshooting..........................................................................57
Diagrams - Drive Assembly........................................................58
Diagrams - High Pressure Cell Assembly..................................59
Diagrams - Low Pressure Cell Assembly...................................60
Warranty and Return Policy.........................................................61
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
1
Intro
Description
The Static Gel Strength Measurement (SGSM) device uses a vaned bob to
condition a cement slurry inside a pressurized test cell and measure static gel
strength at down-hole conditions. By directly measuring the forces required
to initiate movement in the sample, the SGSM provides an accurate way of
determining the static gel strength.
The High Pressure SGSM (#120-58) fits in a high-pressure UCA test cell.
This configuration is compatible with both the Single Cell UCA (#120-50) and
the Dual Cell UCA (#120-52).
The Low Pressure SGSM (#120-53) fits in a low-pressure UCA test cell. This
configuration is compatible with the Twin Cell UCA (#120-51).
In an SGSM test, a vaned bob is submerged in the cement. During the test,
the bob turns periodically and measures the static gel strength of the sample.
A computer running OFITE software graphs the data from both cells. This
data is available in real time on-screen and is also stored in an Excel®
spreadsheet for easy graphical viewing and printing.
Features
----
Mechanical measurement of static gel strength
Conditions the cement in the test cell
Data is available instantly on-screen and is automatically converted to
Excel® spreadsheet format
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
2
Specifications
Components
Size:
-- High Pressure SGSM (with cell): 20" tall × 6" diameter (51 × 15 cm)
-- Low Pressure SGSM (with cell): 18.25" tall × 6" diameter (46 × 15 cm)
-- SGSM Electronics Box: 8" × 3" × 10" (20 × 8 × 25 cm)
Weight:
-- High Pressure SGSM (with cell): 49.4 lb (22.4 kg)
-- Low Pressure SGSM (with cell): 46 lb (20.1 kg)
-- SGSM Electronics Box: 1.2 lb (544 g)
Equipment:
-- The High Pressure SGSM (#120-58) requires either a Single Cell UCA
(#120-50) or a Dual Cell UCA (#120-52)
-- The Low Pressure SGSM (#120-53) requires a Twin Cell UCA
(#120-51)
Power Requirements:
-- 100 - 240 Volt, 50 – 60 Hz, 2 Amp, Fuse: T 2.0A L 250V
Computer:
-- Windows XP or higher
-- RS-232 Serial Port (or Serial to USB Adapter)
-- Minimum Screen Resolution: 1280 × 680
Environmental Conditions:
-- For indoor use only
-- Maximum Altitude: 6,562 ft (2,000 m)
-- Temperature: 41° - 104°F (5° – 40°C)
-- Maximum Relative Humidity: 80% for temperatures up to 88°F (31°C)
decreasing linearly to 50% at 104°F (40°C)
Only use replacement parts that have been supplied by OFITE
#120-53-25
#120-53-80
#120-53-81
#120-58-005
#120-58-07
#120-58-08
#120-58-16
#120-75-9
#120-75-10
#122-073
#122-075-1
#130-79-15
#152-37
#220-10A-EURO
#220-15A-USA
LPT Cable
Electronics Box
Wrench, Combination, 3/16"
Drive Assembly (See diagram on page 58 for parts list)
Wrench, Allen, 5/64"
Calibration Stand
Wrench, Strap, 5"
Weight Hanger
Weight Set
Fuse, 2 Amp, 5 mm × 20 mm
Fuse, 8 Amp, 5 mm × 20 mm
Serial Cable
Power Cord, 115 Volt, USA,
Power Cable, European
Power Cable, USA
High Pressure SGSM:
#120-50-018
Fill Gauge
#120-209
Thermocouple Assembly
#120-58-006
High Pressure Cell Assembly (See diagram on page 59
for parts list)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
3
Low Pressure SGSM:
#120-51-020
Thermocouple Assembly
#120-53-006
Low Pressure Cell Assembly (See diagram on page 60
for parts list)
#120-51-021
Fill Gauge
Optional:
#120-53-SP Spare Parts Kit for Low Pressure SGSM:
#120-53-01 Vane Assembly
#120-53-06 Magnet Shaft Assembly
#120-53-23 Diaphragm, Qty: 2
#120-53-31 O-ring, Qty: 5
#120-53-32 O-ring, Qty: 5
#120-53-33 Tension Spring, Qty: 2
#120-53-38 Retaining Ring, Internal, Qty: 2
#120-53-42 Bushing Graphite, Qty: 20
#120-53-43 Filter, 7 Micron Element Kit
#120-53-58 Backup Ring, Upper, Qty: 2
#120-53-59 Backup Ring, Lower, Qty: 2
#120-58-05 Retaining Ring, External, Qty: 2
#123-011
O-ring for Test Cell, Qty: 5
#120-58-SP Spare Parts Kit for High Pressure SGSM:
#120-50-026 Retaining Ring, External, Qty: 2
#120-50-027-1 Seal Ring, Qty: 2
#120-53-01
Vane Assembly
#120-53-041Bearing
#120-53-31
O-ring, Qty: 5
#120-53-32
O-ring, Qty: 5
#120-53-33
Tension Spring, Qty: 2
#120-53-42
Bushing Graphite, Qty: 20
#120-53-58
Backup Ring, Upper, Qty: 2
#120-53-59
Backup Ring, Lower, Qty: 2
#120-53-82
Retaining Ring, External, Qty: 2
#120-58-05
Retaining Ring, External, Qty: 2
#120-58-23Diaphragm
#120-58-38
Retaining Ring, Internal, Qty: 2
#123-011
O-ring for Test Cell, Qty: 5
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
4
Safety
Explanation of Symbols
Caution: Risk of Danger - This symbol directs the operator to consult the
instruction manual for safety related warnings. (ISO-7000-0434)
Whenever this symbol is used on the equipment, the user must
consult the manual to determine the nature of the hazard and any
actions which have to be taken.
Hot: This symbol indicates that a surface may be hot to the touch.
Shock Hazard: This symbol indicates a risk of electrical shock.
Note: This symbol will indicate important notes and helpful hints for the
operation of the equipment.
Tip: This symbol is used to identify operational information and best
practices to obtain the most reliable data.
Caution: Note - This symbol is used to indicate statements in the manual
which warn against actions which may cause damage to the equipment
during routine service or maintenance.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
5
Quick Start
1. Set up the software with the desired parameters (see page 8).
2. Prepare the cell caps and cell body.
3. Assemble the bottom cell cap. See page 19.
4. Install the bottom cell cap to the bottom of the cell body. See page 20.
5. Assemble the top cell cap. See page 21.
6. Assemble the SGSM shaft assembly and install it to the top cell cap.
See page 24.
7. Install the top cell cap to the cell assembly.
8. Install the test cell to the cabinet.
9. Connect the SGSM head to the shaft assembly and run a drag check.
See page 27.
10.Mix the slurry and fill the cell. See page 28.
11.Connect water supply line, thermocouple, and transducer to the test cell.
See page 29.
12.Run the test. See page 31.
13.Allow test cell to cool down. See page 34.
14.Evaluate the test data. See page 33.
15.Remove test cell.
16.Disassemble and clean the cement from the test cell. See page 35.
17.Clean and inspect all of the test cell components.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
6
Setup
Hardware
1. Carefully remove the instrument from the crate and place it on a flat,
stable surface. Make sure to allow for adequate air flow around the unit,
especially near the vents on the sides.
To ensure personal safety, always use proper lifting techniques.
Position the unit so that the user can quickly disconnect plugs in case of
an emergency.
2. Connect the equipment to the computer. Each test configuration requires
a different set of connections to the computer.
--
Single UCA or Dual UCA - Connect the UCA to a PC with the
supplied serial cable.
--
Single SGSM or UCA/SGSM - Connect the PC and the UCA unit
to the SGSM Data Hub with the supplied serial cables. Connect the
SGSM to the Data Hub with the supplied LPT cable.
When using only the UCA/SGSM software on a dual cell instrument,
always connect the SGSM to Cell 2.
When using the Single UCA or Single SGSM software with a Dual Cell
or Twin Cell UCA, always run the test on Cell 1.
--
Dual SGSM - Each SGSM has a Data Hub. Connect each SGSM to
its Data Hub using the supplied LPT cables. Connect the first Data
Hub to the UCA unit using a serial cable. Connect both Data Hubs to
the computer with serial cables.
Make sure all SGSM electrical connections have been made before
attempting to turn on the SGSM box as this may cause damage to
internal electrical components.
3. Turn the “Main Power” switch on once fully connected to the UCA and PC.
S
G
S
M
Cell 1
UCA
RS-232
RS-232
RS-232
PC
Single UCA or Dual UCA
UCA/SGSM
LPT
UCA
Data
Hub
Cell 2
UCA
PC
S
G
S
M
LPT
LPT
Data
Hub
RS-232
Data
Hub
S
G
S
M
S
G
S
M
Cell 1
RS-232
LPT
Data
Hub
Cell 2
UCA
RS-232
RS-232
PC
PC
RS-232
Single SGSM
Dual SGSM
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
7
Setup
Software
Before you begin your test, you must prepare the PC to record the data. Five
software applications have been included with your instrument:
--
Single SGSM - For running an SGSM test on a Single-Cell UCA
--
UCA and SGSM - For running a UCA and SGSM on a Dual-Cell UCA
--
Dual SGSM - For running two SGSM tests on a Dual-Cell UCA
1. Turn on the PC, UCA, and SGSM Electronics Box.
2. Open the software by double-clicking the icon on the desktop.
3. Click Utilities → Setup.
“COM Port” - The COM port the device is connected to. The Dual SGSM
software will ask for two COM ports.
“Temp Unit” - °F or °C
“Pressure” - PSI or MPa
The pressure reading is only on the High Pressure 20,000 PSI SGSM
units (#120-58).
“Gel Strength” - Gel strength units (Dyne/cm2, lb/100 ft2, Pa., lb/ft2)
“Unit #” - Identifies the unit generating the graph. This field is helpful
when multiple units are generating graphs.
“Archive Path” - The location to save the data files
“Logo Path” - Select a logo (.JPG format) to print on the graph at the
end of the test.
“Bob Height” - The height of the bob in millimeters
“Bob Diameter” - The diameter of the bob in millimeters
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
8
“Conditioning Speed” - The speed (RPM) for conditioning the cement
slurry prior to the SGSM test.
The recommended conditioning speed is 30 RPM. This is equivalent
(based on surface area) to conditioning at 150 RPM in a pressurized
consistometer.
“Conditioning Time” - This is the amount of time the SGSM will
condition the cement before it begins measuring gel strength. This value
must be at least 2 minutes in order to give the SGSM time to establish a
zero offset.
After the Conditioning Time, the SGSM will periodically measure gel
strength based on the “Test Speed”, “Test Time”, and “Wait Time” fields.
“Test Speed” - The speed (RPM) the bob will turn to break the gel and
measure the gel strength of the cement.
“Test Time” - The amount of time the bob will turn while measuring gel
strength.
“Wait Time” - The amount of time the bob will pause between gel
strength measurement periods.
“Strength #1”, Strength #2”, ... “Strength #5” - Enter a gel strength
value in each of these fields. When the cement reaches that gel strength,
the software will record the elapsed time and print it on the graph.
“Print to Printer” - When this option is on, a graph of the test results will
automatically print to the printer when a test is complete.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
9
Software
Each software application has a set of tabs that are specific to the test
configuration (Single SGSM, Dual SGSM, or UCA/SGSM).
The SGSM Info (single) or Cell 1 Info/Cell 2 Info (dual) tabs show the
current SGSM test configuration and a graph of the temperature profile.
Test Started
Heater Engaged
The heater light only turns on when the temperature of a test is being
controlled by the software. If a test is being run manually by the Eurotherm,
then the heater indicator will not turn on.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
10
The SGSM Chart shows a graph for an SGSM test while the test is running.
“Elapsed Time” - Time since the test began (HR:MM:SS)
“State Time” - Elapsed time of the current state.
“SGSM State” - The current state of the SGSM test.
Mixing - The bob is mixing the cement. The speed is set by the
“Conditioning Speed” field in the Setup screen.
Wait - After conditioning the cement, the motor stops for 6 seconds to
allow the fluid to reach a steady state.
Pre Zero - Before performing the zero operation, the software turns
the bob one full revolution to overcome any initial drag.
Zero - Before starting the test, the software turns the bob one full
revolution and records the amount of drag in the system. It uses these
values to compensate for the drag during a test.
Stop - The bob is stopped between measurements. The bob will be
stopped for the amount of time specified in the “SGSM Wait Time”
field on the Setup screen.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
11
Measure - The bob is turning and measuring gel strength. The
measurement will last for the amount of time specified in “SGSM Test
Time” on the Setup screen.
“Temperature” - Temperature within the test cell. (°F or °C, depending on
the settings in the Setup screen)
“Pressure” - Pressure within the test cell. (PSI or MPa, depending on the
settings in the Setup screen)
The pressure reading is only on the High Pressure 20,000 PSI SGSM
units (#120-58).
“Current Reading” - The current gel strength measurement. This field
will show the current gel strength if the SGSM State is in “Measure” or in
“Stop”. (Units depend on the settings in the Setup screen.)
“Last Gel Strength” - The last calculated gel strength of the sample. (Units
depend on the settings in the Setup screen.)
The Dashboard shows graphs for both cells along with current test data.
Dual cell units only.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
12
All charts in the UCA and SGSM software can be manually scaled to
show more or less detail. To manually scale a chart:
1. Right-click on the X or Y axis and uncheck
“AutoScale X” or “AutoScale Y”.
2. Double-click the minimum value on the axis. Type in
a new value.
3. Double-click the maximum value on the axis. Type in
a new value.
4. The chart will now only display values between the
new minimum and maximum.
The Log Data tab shows the logged data for both cells.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
13
Software
Temperature Profile
Builder
The SGSM Software includes a Temperature Profile Builder. Here a custom
temperature profile can be created for a test.
If preferred, a temperature profile can be built manually using the Eurotherm
controls. Select “MANUAL” from the “Temperature Profile List” on the Cell
Info tab. Refer to page 53 for instructions on programming the Eurotherm.
1. Select “Temperatures Profile Builder” from the “Utilities” menu.
2. Either select a test to edit from the list on the left-hand side of the screen,
or click “New Test” to build a new test.
3. Enter a test name.
4. Click the “Add” button to add a step. As you add steps, the graph below
will change to reflect the new profile. There are three Step Types:
a. Hold - This will hold the current temperature for a set number of
minutes. You will be prompted for the hold time.
b. Ramp - This will increase the temperature up to the target in a set
number of minutes. You will be prompted for the ramp time and target
temperature.
c. Step - This will increase the temperature up to the target as fast as
possible. You will be prompted for the target temperature.
5. To edit an existing step, double click the step in the step list. Click OK
when done.
6. Click the “OK” button to exit the Temperature Profile Builder. The new
Temperature Profile will now appear in the “Temperature Profile List” in
the “Cell 1 Info” tab.
To setup the ramp temperature, double click on the Temperature box to open
the window below. Edit the fields as needed and click “OK”.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
14
Software
Operation
Once the temperature profile is built, select Operate → Load SGSM 1 Info/
Load SGSM 2 Info. Here you can enter all the necessary test information in
advance, before preparing the cement sample.
Most of these fields are optional. The information in them will display in the
data file at the end of the test. Select the desired profile before the test.
Multiple
Conditioning
Final
Strength
The following fields are required:
Test Name - Each test must have a unique test name. The software uses
this field to name the data file.
Slurry Density - Slurry density can be entered but it will not be calculated
unless it is a UCA test.
Cement Density - Cement density can be entered but it will not be
calculated unless it is a UCA test.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
15
Multiple Conditioning - When this option is turned ON, the software will
measure gel strength periodically until the cement reaches the value in the
“Strength #5” field entered in the setup screen. Then it will condition the
cement for the time period specified in the “Conditioning Time” field on the
Main Setup screen. This cycle will continue until the gel strength reaches the
value in the “Final Strength” field on the Test Info Setup screen. Once the gel
strength reaches the “Final Strength, the alarm will sound and the test will end.
This value is used for all conditioning periods when “Multiple Conditioning” is
on. If no value is specified, the default is 30 minutes.
Multiple Conditioning Turned ON
When Multiple Conditioning function is checked OFF, “Gel Strength 5”, will
prompt the software to record the value, turn on the alarm, and stop the test.
Multiple Conditioning Turned OFF
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
16
Software
Calibration Archives
The SGSM software stores all calibration data from prior calibrations. To view
data from a previous calibration, select “Load Cell Calibration Archive” from
the “Utilities” menu. A list of previous calibrations will appear in a window to
the left. Click on a calibration record and export to view the data.
2014 Month11Day06_Time1002.cal
2014 Month11Day06_Time1014.cal
2014 Month11Day10_Time0949.cal
2014 Month11Day13_Time1433.cal
2014 Month11Day18_Time1557.cal
2014 Month11Day19_Time1251.cal
2014 Month11Day21_Time1445.cal
2014 Month11Day24_Time0726.cal
2014 Month12Day03_Time1324.cal
2014 Month12Day03_Time1333.cal
2014 Month12Day03_Time1338.cal
2014 Month12Day22_Time0757.cal
4.849
11.229
1.000
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
17
From this screen you can view and export the data to the PC in an Excel
document. Select a calibration and click Export. A “Choose or Enter Path of
File” window will open. Enter a file name and save it as a “.dat” document.
The “.dat” document will create a text file which will allow the user to open it
with text file or as an Excel file.
File Name
File Type
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
18
Operation
Cell Cap Assembly
The cell body and both cell caps were manufactured and pressure tested
together. All three pieces are serialized. Before assembling the test cell, make
sure all three pieces have the same serial number.
For a complete diagram of the test cell, refer to pages 59 and 60.
Bottom Cap Assembly
1. Inspect the transducer port to make sure that it is clean and free of debris.
Dried transducer couplant can accumulate on the sides and bottom of the
port. This couplant must be cleaned from the port as well.
2. Tighten the jaws of the vice on the flats of the cell cap with the threads
facing up.
3. Apply a thin layer of high-temperature grease to the surface of the bottom
cell cap that meets with the cement. Wipe off any excess grease.
4. For the High Pressure SGSM, install the seal ring (#120-50-027-1)
with the narrow side pointed towards the threads and place the o-ring
(#123‑011) on top of it.
For the Low Pressure SGSM, simply place an o-ring in the o-ring groove
on the bottom cell cap. The bottom cell cap does not require a seal ring.
5. Apply more high temperature grease to the seal ring and o-ring.
The o-ring should be inspected for signs of degradation before installing a
new o-ring.
O-ring
O-ring
Seal Ring
Metal Seal Ring
(Cross Section)
High Pressure SGSM
Low Pressure SGSM
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
19
Cell assembly
The test cell is labeled to indicate which end is the top and which is the
bottom. The interior of the cell has a taper with the narrow end at the top and
the wider end at the bottom to facilitate cement plug removal. Apply a thin
layer of high-temperature grease to the surfaces that will be in contact with
cement. This will make cleaning easier when the test is complete.
1. Carefully screw the cell body onto the bottom cell cap completely. Then
unscrew the cell body ¼ of a turn. This will facilitate disassembly later.
The cell body should turn smoothly onto the cell cap. If you encounter
resistance, stop turning and unscrew the body slightly. Then continue
turning until the cell body is completely tightened.
Watch the bottom cell cap o-ring from inside the cell body as it screws
onto the cell cap. Make sure that the o-ring remains seated. If it the o-ring
becomes unseated, slightly unscrew the cell body and reset the o-ring to
its proper location.
2. Remove the cell body and bottom cell cap from the vise in preparation for
the top cell cap assembly.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
20
Top Cap Assembly
1. Inspect the transducer and thermocouple ports to make sure that they are
clean and free of cement.
2. Install the thermocouple into one of the ports on the top cap of the SGSM
test cell. Tighten the thermocouple completely then loosen it ¼ of a turn.
The two ports are interchangeable.
3. Tighten the jaws of the vice on the flats of the cell cap with the threads
faced up.
4. Insert retaining ring into the lower internal ring groove of the cell cap so
the gap clears the thermocouple as shown below.
Retaining Ring
Grooves
Thermocouple
Space for
Thermocouple
Retaining Ring
(#120-58-38)
High Pressure SGSM
Thermocouple
Retaining Ring
Groove
Retaining Ring
(#120-58-38)
Low Pressure SGSM
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
21
5. Insert the diaphragm into the cell cap so the gap clears the thermocouple.
6. Insert the other internal retaining ring into the groove above the
diaphragm so the gap clears the thermocouple as shown below.
On a High Pressure SGSM Cap, place the metal seal
ring on the external portion of the cell cap with the narrow
end pointed toward the threads. The seal ring should not
need to be removed from the top cell cap. If it must be
replaced, the metal seal ring must be reinstalled in the
same orientation.
Metal Seal Ring
7. Place an o-ring on the cell cap above the metal seal ring.
(Cross Section)
8. Install the external retaining ring above the o-ring.
On a Low Pressure SGSM Cap, only the o-ring (#123-011) is required
externally.
Internal
Retaining Ring
(#120-58-38)
Diaphragm
(#120-58-23)
Space for
Thermocouple
External
Retaining Ring
(#120-50-026)
Thermocouple
O-Ring
(#123-011)
High Pressure SGSM
Thermocouple
Diaphragm
(#120-58-23)
Retaining Ring
(#120-58-38)
O-Ring
(#123-011)
Low Pressure SGSM
9. Apply high temperature grease to the threads, seal ring, o-ring, and the
Retaining ring.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
22
10.Install the two bushings. One bushing goes into the hole in the top of the
top cell cap. The other goes inside the Mounting Adapter.
Make sure the bushings sit flush with the metal.
Retaining Ring (#120-53-82)
High Pressure SGSM Only
Mounting
Adapter
O-ring
(#120-53-52)
Backup Ring
(#120-53-58)
Bushing
(#120-53-42)
Bushing
(#120-53-42)
11.Secure the mounting adapter (120-58-04) with the short end facing up.
12.Place the upper backup ring (#120-53-58) around the top of the mounting
adapter with the o-ring (#120-53-32) on top of it. The backup ring should
be oriented with the taper pointing away from the o-ring.
13.Place a retaining ring (#120-53-82) on the mounting adapter to hold the
o-ring in place.
14.Secure the mounting adapter with the longer end of the shaft pointed
up. Place the lower backup ring (#120-53-59) around
the bottom of the mounting adapter with the o-ring
(#120‑53‑31) on top of it. The backup ring should be
oriented with the taper pointing away from the o-ring.
15.Install the retainer ring (#120-58-05) above the o-ring.
Metal Seal Ring
(Cross Section)
Retainer Ring
(#120-58-05)
O-ring
(#120-53-31)
Lower Backup Ring
(#120-53-59)
Mounting Adapter
(#120-58-04)
O-ring and Backup Ring in
Proper Alignment
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
23
16.Install the SGSM base to the mounting adapter as shown below. Screw
the threads facing inward and the allen heads on the outside of the base.
17.Insert the magnet shaft assembly (#120-58-010) into the SGSM base,
threads first with the magnet facing upward.
18.Lightly grease the threads of the mounting adapter that secure the
magnet cover.
19.Place the magnet cover over the magnet and screw it tight.
20.Lightly grease the threads that secure the plug and gland.
21.Install the plug and gland. Completely tighten them, then loosen them ¼
of a turn.
Plug
(#120‑50‑058)
Gland
(#122‑004-002)
Magnet Cover
(#120-53-09)
SGSM Base
(#120-53-13)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
24
22.Secure the top cell cap in a vise with the threads facing down.
23.Carefully insert the assembled base and bob shaft through the top of the
cap, with the threads of the bob shaft going in first.
24.Once the base reaches the top of the cell cap, screw the assembly onto
the cell cap.
Thermocouple
(#120-209)
Top Cell Cap Vane Paddle
(#120-58-03) Assembly
(#120-53-01)
Magnet Cover
(#120-53-09)
SGSM Base
Magnet Shaft
Assembly
(#120-58-010)
High Pressure SGSM
Thermocouple
(#120-51-020)
Top Cell Cap Vane Paddle
(#120-53-03) Assembly
(#120-53-01)
Magnet Cover
(#120-53-09)
Magnet Shaft
Assembly
SGSM Base
(#120-53-010)
Low Pressure SGSM
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
25
25.With a set of calipers, measure the diameter of the bob along all three
axes of the vane. Measure the height of the bob blades in three places.
Record the average diameter and average height and enter them in the
Setup screen. Refer to page 8.
The bob should be measured every 3 months.
Bob
Calipers
26.Screw the bob onto the bob shaft. Hold the shaft in place with the
supplied 3/16" combination wrench (#120-53-81) tightening the bob.
The bob screws counterclockwise onto the bob shaft with a
left‑handed thread.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
26
Operation
SGSM Drag Check
Before running a gel strength test, it is recommended you perform a drag
check in the software. Run the drag check in air.
Always perform a drag check after calibrating the transducer. During the drag
check, the SGSM will run at 2 RPM and the total time for the drag check will be
33 sec.
1. Carefully screw the assembled SGSM top cap onto the test cell.
The cell cap should turn smoothly in the test cell threads. If you encounter
resistance, stop turning and unscrew the cap slightly. Then continue
turning until the cap is completely tightened.
2. Once the cap is completely tightened, unscrew it one quarter turn. This
will facilitate disassembly later.
3. Install the SGSM head to the base.
4. Connect the SGSM Head to the UCA with the LPT cable. See page 7.
5. To get to the Drag Check screen in the software click Utilities→Drag
Check and select “Run”.
6. Allow the test to run for 33 seconds and select “Save”.
7. Repeat the drag check test to ensure consistency.
The test must have a peak drag less than 85 grams. If the value jumps
wildly from one check to the next, this is an indication that there is a
problem with one or more of the components of the system (bushing,
shaft, load cell, etc.). You will need to inspect the SGSM assembly for
problems. See page 57 for troubleshooting instructions.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
27
Operation
Preparing the Test Cell
Filling the Cell
1. Once the slurry has been mixed, place the fill gauge on top of the test cell.
2. Fill the cell until the cement touches the bottom of the fill gauge to the
side labeled “SGSM”.
Fill Gauge
(#120-51-021)
3. Carefully screw the top cell cap onto the cell body completely. The cell
cap should turn smoothly onto the cell body. If you encounter resistance,
stop turning and unscrew the cap slightly. Then continue turning until it
tightens completely.
Unscrew the top cell cap ⅛ of a turn. This will facilitate disassembly later.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
28
Operation
Connecting the Cell
NOTE: To minimize wear and tear of the bottom acoustic transducer, remove
it from the unit. It must remain paired with the top acoustic transducer.
1. Carefully place the cell into the heating jacket.
2. Align the cell as shown below.
3. Connect the water supply tube from the port on the test cell to the cabinet.
a. Screw the glands on the water supply tube, leaving two threads of
each fitting exposed. The longer end goes to the cabinet and the
shorter end goes to the cell.
b. Turn the cell in the heat jacket so the water supply tube is aligned
properly to the cell.
c. Use a ⅝” wrench to tighten both glands completely.
Thermocouple
⅝"
Supply Line
⅝"
½"
High Pressure SGSM
Thermocouple
Filter
⅝"
⅝"
Supply Line
½"
Low Pressure SGSM
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
29
4. Plug the thermocouple from the cell cap to the port on the cabinet leaving
the thermocouple gland slightly loose on the cell cap.
5. Turn the water on until water comes out of the thermocouple gland and
ventilation port on the top cell cap.
a. On the Single Cell UCA (#120-50), turn the “WATER SUPPLY” valve
to “ON”.
b. On the Twin Cell UCA (#120-51) turn the “CELL 1 WATER” or “CELL 2
WATER” valve to “FILL”.
c. On the Dual Cell UCA (#120-52), turn the appropriate “FILL” valve to
“ON”.
6. Once the water comes out of the ventilation port, tighten the thermocouple gland completely and turn the water off. This will ensure that all air
has been purged from the cell.
7. Clean and dry the top cell cap and cabinet of excess water.
8. Carefully place the SGSM Drive Assembly on top of the test cell. Make sure
all the cables are connected properly. See page 7 for more information.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
30
Operation
Starting the Test
Use of this equipment in a manner not specified by the manufacturer
may impair the protections provided by the equipment.
1. In the software, program a temperature profile for each test (see page 14).
2. Assemble the test cell (see page 19), load it into the heating jacket and
make all the necessary connections (see page 29).
3. Pressurize the cell as described in the UCA instruction manual.
4. Click the “Start Test” button.
5. After clicking the “Start Test” button, make any changes to the test
information in the information screen. Refer to page 14 for more
information about the entering test information.
Click “OK” to continue and start the test.
6. Turn the “Heat” Switch on.
7. When the cement reaches the gel strength specified in the “Strength #5”
field on the Setup screen (see page 8), the software will automatically
stop the test and turn on the alarm.
To stop the alarm on a High Pressure SGSM (#120-58), click the OK
button on the alarm message in the software. The Low Pressure SGSM
(#120-53) do not have a Sonalert.
The alarm will not turn on until the SGSM has finished the current
measurement cycle.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
31
Operation
Stopping the Test
1. The test stops automatically. The alarm needs to be acknowledged and
cleared by clicking the SGSM alarm (green button) that appears in the
upper right hand corner.
Always open the pressure release valve very slowly to prevent
pulling cement into the plumbing.
2. Unscrew and remove the high-pressure line from the cell cap and the
instrument cabinet.
Use caution. The test cell may contain a small amount of air at high
temperature and/or pressure.
3. Unplug the thermocouple.
4. Remove the SGSM cap assembly.
5. Remove the thermocouple.
6. Lift the cell out of the heating jacket.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
32
Operation
Evaluating Test Data
When a test is complete, the software automatically generates a .jpg file
of the chart and a data file that can be opened in Excel. Both of these files
will be stored in the folder specified in the “Archive Path” field on the Setup
screen (see page 8 for more information).
The SGSM data file will show the elapsed
test time, temperature, pressure, and gel
strength at each peak during the test.
This differs from the UCA data file, which
includes data points at a specific time interval
throughout the test.
Gel Strength Peaks
The SGSM chart shows the temperature,
pressure, and gel strength over time.
The software also generates a trend line
connecting the peaks of the gel strength line.
At the top of the SGSM chart are entries for
“Time @ × lb/100ft^2”. This shows the time at
which the cement reached each gel strength.
These values are set in the Options screen (see page 8) as “Strength #1”,
“Strength #2”, etc.
The “Transition Time” is the calculated time from “Strength #1” to “Strength
#5”. By default, these fields are set to 100 and 500 lb/100ft2 respectively.
The measurement time for the static gel strength begins once the test has
completed the “Conditioning Time” entered in the setup screen. These times
are interpolated based on the trend line generated from the peaks that are
measured at the end of each “SGSM Test Period”.
When Multiple Conditioning is on, the Interpolated Data will only reflect data
collected from the first cycle.
Interpolated Data
Test Time
Trendline
Pressure
Temperature
Static Period
Gel Strength
Conditioning Period
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
33
Operation
Removing the Test Cell
1. When the gel strength reaches the value in the “Gel Strength #5” field
on the Options screen or the “Final Strength” field in the “Test Infos”
screen, the software will automatically stop the test. The data file will be
automatically saved in the folder specified on the “Setup” screen.
2. Turn the “Heat” switch off.
3. Turn the “Cool” switch on and allow the test cell to cool completely.
4. When the cell has cooled, turn the “Pump” and “Cool” switches off.
5. Turn the “Fill” valve to “OFF”.
6. Open the pressure release valve by slowly turning it counterclockwise.
Always open the pressure release valve very slowly to prevent
pulling cement into the plumbing.
7. Disconnect the cell.
a. Loosen the high-pressure line on the instrument cabinet.
b. Unplug the thermocouple.
c. For SGSM tests, carefully remove the SGSM head from the test cell.
8. Lift the cell out of the heating jacket.
When removing the test cell, pay special attention to the transducer and
make sure it doesn’t pull off of the end of the transducer cable with the cell.
Use caution. The test cell may contain a small amount of air at high
temperature and / or pressure.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
34
Maintenance
Disassembling and
Cleaning the Test Cell
The test cell must be cleaned immediately after every test. Any cement left in
the test cell will harden and could damage the equipment. Clean all surfaces
of the test cell with soap and water.
Remove all o-rings, snap rings, and bushing and clean them individually.
Carefully inspect them and discard any that show damage or wear.
If the cement sets during an SGSM test, the bob and bob shaft will set with
the cement in the test cell. If this happens, it may be possible to remove bob
without damaging the equipment.
There are two procedures for removing the SGSM from set cement. The first
procedure attempts to save the magnet and shaft. This procedure will only
work if the threads on the shaft have been heavily greased. The shaft will
need to twist free from the bob and any cement that has set around it.
If the first procedure fails, then the second procedure will remove the magnet
and shaft from the cell. However, both the magnet head and the bob shaft will
be destroyed and will not be reusable. The bob itself should be reusable for
further testing.
To avoid damaging the equipment, make sure all surfaces that will be
in contact with the cement are covered in grease before assembling the
cell.
Procedure 1:
Tools Needed:
-- 10" Crescent Wrench
-- ⅝" Wrench
-- ½" Strap Wrench
-- Soft Face Hammer
-- Cell Cap Wrench
-- Heavy Duty Vice
-- Small Sledge Hammer
-- Rock Chisel
-- Knock Out Tool
Top of Cell
A hardened cement plug
can only be pushed out of
the cell from the top to the
bottom. Secure the test
cell in a heavy duty vice.
Taper
Bottom of Cell
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
35
1. Tighten the jaws of the vice on the flats of the test cell with the SGSM
Drive Assembly facing up.
2. Use a crescent wrench to hold the bob shaft housing in place.
3. Unscrew the black SGSM base collar.
4. Unscrew the magnetic housing on top of the cell.
5. Fit the strap wrench around the magnet on top of the shaft.
6. The bob shaft has a left-handed thread. Using the strap wrench, unscrew
the shaft from the bob by rotating the shaft clockwise. The magnet is
press fit onto the shaft and should move as one piece. If the magnet turns
on the shaft, skip to Procedure 2.
7. When the shaft has disengaged completely from the bob, carefully
remove the shaft by grasping the magnet and pulling straight up.
8. Use a ⅝” wrench to loosen the thermocouple connection and pull it
straight up to make sure it pulls clear of the set cement.
9. Remove the drive adapter by unscrewing it from the cell cap with a
crescent wrench.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
36
10.Use the cell cap wrench to remove the lid of the test cell.
11.Turn the test cell over and secure it in the vice with the end labeled
“BOTTOM” will be facing up.
12.Use the cell cap wrench to remove the bottom cell cap.
13.Remove the cell from the vice.
14.Set the cell upright on a counter with the end labeled “TOP” facing up.
15.Using a hammer and the knock out tool and/or a cement press, remove
the cement plug from the test cell.
Be sure to apply force only to the top of the cement plug.
Take extra precautions as the bob can be damaged during this operation.
16.Note the top and bottom of the cement plug. The top of the plug will have
a hole in the top from which the shaft was pulled.
17.Once the cement plug has been removed, set the plug on its side.
18.Using a small chisel, begin chipping at the plug about ½” from the bottom.
Be careful not to damage the vanes on the bob.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
37
19.Remove the cement from the bottom of the plug in small chunks until you
expose one of the vanes on the bob.
20.Set the plug upside down on the counter.
21.Place the chisel next to the exposed vane and begin chipping downward
away from the vane.
22.Proceed around the bob by removing the cement from between the
vanes.
Procedure 2:
Tools Needed
-- 10” Crescent Wrench
-- ⅝” Wrench
-- Channel Locks
-- Soft Face Hammer
-- Cell Cap Wrench
-- Heavy Duty Vice
-- Small Sledge Hammer
-- Rock Chisel
-- Knock Out Tool
1. Secure the SGSM cell in a heavy duty vice.
2. Use a crescent wrench to hold the bob shaft housing in place.
3. Unscrew the magnetic housing on top of the cell.
4. Remove the magnetic housing.
5. Use a ⅝” wrench to loosen the thermocouple connection and pull it
straight up to make sure it pulls clear of the set cement.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
38
6. Expose a section of the bob shaft:
a. Use a crescent wrench to unscrew the bob shaft housing.
Do not remove the housing completely!
b. Raise the magnetic housing enough so that you can pull the
thermocouple clear.
3. Unscrew the cell cap 2 or 3 turns.
4. Screw the cell cap back down.
5. Screw the bob shaft housing back down.
6. Grip the exposed area of the shaft with a pair of channel locks.
7. The bob shaft has a left-handed thread. Loosen the shaft by turning the
channel locks clockwise.
8. When the threads are fully disengaged, carefully remove the shaft.
9. Remove the magnetic housing.
The action of removing the shaft will destroy the upper bushing.
10.Use a cell cap wrench to remove the cell cap.
11.Turn the test cell over and secure it in the vice with the end labeled
“BOTTOM” will be facing up.
12.Use the cell cap wrench to remove the bottom cell cap.
13.Remove the cell from the vice.
14.Set the cell upright on a counter with the end labeled “TOP” will be facing up.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
39
15.Using a hammer and the knock out tool and/or a cement press, remove
the cement plug from the test cell.
Be sure to apply force only to the top of the cement plug.
Take extra precautions as the bob can be damaged during this operation.
16.Note the top and bottom of the cement plug. The top of the plug will have
a hole in the top from which the shaft was pulled.
17.Set the plug on its side.
18.Using a small chisel, begin chipping at the plug about ½” from the bottom.
19.Remove the cement from the bottom of the plug in small chunks until you
expose one of the vanes on the bob.
20.Set the plug upside down on the counter.
21.Place the chisel next to the exposed vane and begin chipping downward
away from the vane.
22.Proceed around the bob by removing the cement from between the
vanes.
Do not use any type of decontamination or cleaning agents as they may
cause a hazard as a result of a reaction with parts of the equipment
or with material contained with in. If there is any doubt about the
compatibility of a decontamination or cleaning agent please contact
OFITE Technical Support.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
40
Maintenance
Changing a Fuse
If the SGSM Electronics Box does not power on, check the fuse.
1. Unplug the power cord leading to the SGSM Electronics Box.
2. Remove the fuse holder next to the power receptacle.
3. If either fuse is blown, replace it with a new one.
The SGSM Electronics Box uses two 2 amp fuses.
4. Put the fuse holder back into the slot.
5. Plug the power cord back in.
6. Turn on the Electronics Box to ensure it is working again.
ALWAYS connect the SGSM head before powering up the electronics
box. NEVER plug in the SGSM head when the box is already on. This
could damage the SGSM board.
Fuse Holder
Power Receptacle
Power Switch
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
41
Appendix
Filling The Cell
This section applies to earlier models of the UCA.
1. Place the bottom cell cap in a vice with the threads facing upward.
2. Carefully screw the cell body onto the bottom cell cap completely. Then
unscrew the cell body ¼ of a turn. This will facilitate disassembly later.
3. Begin filling with the cement slurry. Place the fill gauge on top of the test
cell. Fill the cell until the cement touches the bottom of the fill gauge.
Fill Gauge (#120-50-018)
High Pressure SGSM
Fill Gauge
(#120-51-021)
Low Pressure SGSM
4. Carefully screw the top cell cap into the test cell, just as you did with the
bottom cell cap.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
42
Appendix
Magnet Positioning
This section applies to earlier models of the SGSM.
It may be necessary to reposition the magnet in the SGSM Drive Assembly.
1. Remove the Drive Assembly from the test cell.
2. Turn the Drive Assembly upside down.
3. Unscrew the support.
4. Locate the set screw that holds the magnet on the bob shaft. Loosen the
set screw enough for the magnet to move freely.
5. Adjust the magnet so that the top is 3.16 inches from the base of the
Drive Assembly. Use calipers to measure the distance.
6. When the magnet is in position, tighten the set screw to hold it in place.
7. Screw the support back onto the base of the Drive Assembly.
Calipers
Magnet
Drive Assembly
Base
Magnet
Set Screw
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
43
Appendix
Calibration - Old Style
This section applies to earlier models of the SGSM.
The transducer on the SGSM should be calibrated periodically to ensure
accurate readings. The calibration is performed with a dead-weight set.
1. Remove the transducer from the SGSM and place it on one of the slotted
weights.
Transducer
Weight
2. Make sure the SGSM is connected to the computer and that the software
is running.
3. Select “Calibrate SGSM” from the “Utilities” menu.
4. You will be prompted to take a reading with no weight on the transducer.
Simply click the “Accept” button.
5. You will now be prompted to add weight to the transducer. Place the
appropriate weight on the transducer and click the “Accept” button.
The first time the unit is calibrated, the software will not tell you what
weights to use. The correct weights are: 0g, 100g, 200g, and 400g.
6. Continue adding weight according to the prompts and click “Accept” every
time.
7. When the calibration is complete, click the “Save” button.
8. Reinstall the transducer onto the SGSM.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
44
Appendix
SGSM Cell Cap
Assembly
This section applies to earlier models of the SGSM.
1. Screw the thermocouple into one of the ports on the top cap of the SGSM
test cell.
The two ports are interchangeable.
2. Insert a retaining ring into the upper groove on the inside of the cell cap.
Retaining Ring
Groove
Thermocouple
Retaining Ring
(#120-58-38)
3. Insert the diaphragm into the cell cap.
4. Insert the other retaining ring into the groove below the diaphragm.
Thermocouple
Diaphragm
(#120-58-23)
Retaining Ring
(#120-58-38)
5. Place an o-ring on the cell cap.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
45
6. Install the two bushings. One bushing goes into the hole in the top of the
top cell cap. The other goes inside the Mounting Adapter.
Retainer Ring (#120-53-82)
High Pressure SGSM Only
Mounting
Adapter
O-ring
(#120‑53‑52)
Backup Ring
(#120-53-58)
Bushing
(#120‑53-42)
Bushing
(#120‑53-42)
7. Place the upper backup ring (#120-53-58) around the top of the Mounting
Adapter with the o-ring (#120-53-32) on top of it. The backup ring should
be oriented with the taper pointing toward the o-ring.
8. Slide the bob shaft into the SGSM base.
9. Place the magnet cover over the magnets and screw it tight.
Bob Shaft
SGSM Base
Magnets
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
46
10.Hold the SGSM base with the threaded end of the shaft pointed up. Place
the lower backup ring (#120-53-59) around the bottom of the Mounting
Adapter with the o-ring (#120-53-31) on top of it. The backup ring should
be oriented with the taper pointing toward the o-ring. Make sure the
backup ring and o-ring are centered around the Mounting Adapter.
Retainer Ring
(#120-58-05)
O-ring
(#120-53-31)
Backup Ring
(#120-53-59)
O-ring and Backup Ring in
Proper Alignment
11.Carefully lower the cell cap onto the shaft, making sure the backup ring
and o-ring remain in proper alignment. Screw the two pieces together
hand tight.
Magnet Cover
SGSM Base
Top Cell Cap
Bob
Bob Shaft
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
47
12.With a set of calipers, measure the diameter of the bob along all three
axes of the vane. Measure the height of the bob blades in three places.
Record the average diameter and average height and enter them in the
Setup screen. Refer to page 8.
The bob should be measured every 3 months.
Bob
Calipers
13.Screw the bob onto the bob shaft. Hold the shaft in place with a 3/16"
combination wrench (#120-53-81, supplied) or needle-nose pliers while
tightening the bob.
The bob screws counterclockwise onto the bob shaft with a lefthanded thread.
14.Place an o-ring in the o-ring groove on the cell cap.
O-ring Groove
Bottom Cell Cap
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
48
Appendix
Calibration - New Style
The transducer on the SGSM should be calibrated periodically to ensure
accurate readings. The calibration is performed with a dead-weight set.
1. Remove the torque spring from the SGSM and install the calibration
pulley.
2. Connect the wire to the torque spring post and thread it over the
calibration pulley.
Torque Spring Post
Calibration Pulley
Transducer
3. Attach the other end of the wire to the hook on the calibration dead-weight
holder. Adjust the SGSM so that the weight holder is hanging freely.
Dead-weight Holder
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
49
4. Make sure the SGSM is connected to the computer and that the software
is running (see page 7).
5. Click Utilities → Calibrate Load Cell (For Single SGSM).
Cell 1/Cell 2 → Calibrate Load Cell (For Dual SGSM).
6. You will be prompted to take a reading with no weight on the transducer.
Simply click the “Accept” button.
7. You will now be prompted to add weight to the weight holder. Place the
appropriate weight on the holder and click the “Accept” button.
When calibrating the unit for the first time, the software does not provide
prompts that indicate which weights to apply to the weight holder.
The correct weights are: 0g, 100g, 200g, and 400g.
8. Continue adding weight according to the prompts and click “Accept” every
time.
9. When the calibration is complete, click the “Save” button.
10.Remove the calibration pulley assembly and reinstall the tension spring
between the base spring post and the torque spring post.
Slope
Intercept
r˄2
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
50
Appendix
Maintenance Schedule
Procedure
Schedule
Calibrate Transducer
-- After any mechanical components
are changed (bob, shaft, bushings,
transducer, etc)
-- Monthly
Replace Bushings
-- If the bushings show signs of
damage or wear
-- When the SGSM Drag Check
results are too high (see page 27)
SGSM Drag Check
-- Before every test
Bob Measurements
-- Every 3 Months
Fuses
-- As needed (see page 41)
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
51
Appendix
Multiple Instruments
It is possible to control multiple SGSMs from a single computer. To setup
the software for multiple SGSMs, repeat the following procedure for each
instrument.
1. Plug each instrument into a separate serial port on the computer.
2. On the computer, navigate to the “C:\Program Files (x86)” folder.
3. Locate the “SGSM” folder and select it.
4. Hold down the CTRL key and then press C. Then hold down the CTRL
key and hit V. This will create a duplicate of the folder called “SGSM Copy”.
5. Choose a name to identify the new instrument.
6. Rename the new folder with the name of the instrument.
7. Locate the program file (.exe) inside the folder and rename it with the
name of the instrument.
For convenience, create a shortcut to this file on the desktop.
8. Open the software using the new program file.
9. Change the “Archive Path” to a new folder. See page 8 for
instructions.
Each instrument must have its own Archive Path.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
52
Appendix
Manual Temperature
Control
The Eurotherm temperature controller allows the user to program a
temperature profile manually. The Eurotherm is in manual mode by default
but will change to auto mode when the test begins. The user must change it
to manual mode after the test has started.
This profile will be divided into at least two segments. Each segment
represents either a change in temperature or a period of time to hold the
current temperature.
The four buttons along the bottom of the display provide access to the
temperature controller parameters. To program a test:
1. Press the “PAGE” button until the display reads “Prog List”.
2. Press the “SCROLL” key to select the parameter you want to change.
3. Press either arrow key to set the value for the parameter.
4. Repeat steps 2 and 3 until all parameters are set.
The PID and other internal settings have been optimized for this
instrument. Do not change anything other than program parameters.
For more information, refer to the Eurotherm instruction manual.
The first group of parameters will be the same for every test. Do not change
them:
Parameter Value
Prg11
HbOFF
Hb.u0.0
Rmp.umin
Dwl.umin
Cyc.n1
Temperature Controller
RUN/HOLD
Page Scroll
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
53
1. Begin by defining the first segment of the test.
a. Press the “SCROLL” key until “Seg” appears on the display.
b. Press either arrow key to select “1” (segment 1).
2. The first parameter is “Type”.
a. Press the “SCROLL” key to select “Type”.
b. The available options are “rmp.r”, “rmp.t”, or “dwell”. Press either
arrow key to select one.
Rmp.r programs the controller to steadily increase the temperature by
a specified rate (degrees per minute). If you choose this option, the
next parameter will be “Tgt” (target temperature) and then “Rate”
Rmp.t increases the temperature over a specified time interval
(minutes). If you choose this option, the next parameter will be “Tgt”
(target temperature) and then “Dur” (duration in minutes).
Dwell holds the temperature at its current set point for a specified
length of time. If you choose this option, the next parameter will be
“Dur” (duration in minutes).
c. Press the “SCROLL” key to select the remaining parameters (target
temperature, rate, or duration).
d. Press either arrow key to select the options for each parameter.
3. Now define the second segment.
a. Press the “SCROLL” key until “Seg” appears on the display.
b. Press either arrow key to select “2” (segment 2).
4. Continue this process with each segment in the test.
5. When you reach the last segment, set the “Type” to “end”. The next
parameter will be “End.t”.
If you choose “sop”, the heat will be turned off and the test ended.
If you choose “dwell”, the heat will be held at the current temperature
indefinitely.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
54
Example 1:
Heat the sample at 2.5° per minute and stop at 150°. Hold at 150° for 180
minutes and then stop the heat.
Parameter Value
Prg1
HbOFF
Hb.u0.0
Rmp.umin
Dwl.umin
Cyc.n1
Description
Seg
Type
Tgt
Rate
1
rmp.r
150
2.5
Segment 1
Increase temperature at a specified rate
Heat to 150°
Increase temperature at 2.5° per minute
Seg
Type
Dur
2
dwell
180
Segment 2
Hold on the current temperature
Hold for 180 minutes
Seg
Type
End.t
3
end
sop
Segment 3
This is the last segment
Stop the heat
Do not change
Example 2:
Heat the sample to 200° over a period of 90 minutes. Then increase the
temperature to 300° at a rate of 3° per minute. Hold that temperature until the
unit is turned off.
Prg1
HbOFF
Hb.u0.0
Rmp.umin
Dwl.umin
Cyc.n1
Do not change
Seg
Type
Tgt
Dur
1
rmp.t
200
90
Segment 1
Increase temperature for a specified time
Heat to 200°
Increase temperature for 90 minutes
Seg
Type
Tgt
Rate
2
rmp.r
300
3
Segment 2
Increase temperature at a specified rate
Heat to 300°
Increase temperature at 3° per minute
Seg
Type
End.t
3
end
dwell
Segment 3
This is the last segment
Hold at the current temperature indefinitely
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
55
Appendix
Electrical System
Grounding
Proper grounding protects the equipment operator from the risk of electric
shock. The electrical cord provided with this equipment has an equipment
grounding conductor and a grounding plug. Observe the following guidelines
at all times:
--
Always connect the plug to a matching outlet that is properly installed and
grounded.
--
If an extension cord is necessary, make sure it has three prongs and is
compatible with the electrical cord provided with the equipment.
--
Do not modify the electrical cord provided with the equipment. If it is not
compatible with any available outlets, have a compatible outlet installed
by a qualified electrician.
--
If the equipment-grounding conductor (solid green or green and yellow)
is improperly connected, the operator will be at risk of electrical shock.
Never connect it to a live terminal.
--
Local codes may require a Ground Fault Circuit Interrupter (GFCI).
--
Repair or replace a damaged or worn cord immediately.
--
When in doubt, consult a qualified electrician.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
56
Appendix
Troubleshooting
Symptom
Power
There is no
power to the
machine
Thermocouple
Thermocouple
will not fit into
the cell cap
Cause
Remedy
The main power cord is not
plugged in.
Ensure the power cord(s)
is firmly into the wall and
the machine
One of the fuses for the
main power supply is blown
Check and replace the
fuses, see page 41.
The port is filled with
cement.
Use a small drill bit to clear
the cement blockage.
The thermocouple is bent.
Replace the thermocouple
The hub collar is too low on
the thermocouple shaft
Screw the collar up until
there are 2 threads showing.
Software
Trace lines are
The boxes for each line are
missing from the unchecked
graph
Drag Check
If the Peak
Values are
not consistent
between tests
with just the
Head Assembly
versus test in
water
Check the appropriate
boxes
Transducer is out of
calibration (only for #120-58
- High Pressure, 20,000 PSI
SGSM)
First, calibrate the
transducer (see page 49).
The cell cap is bent
Disassemble the SGSM
cell cap and make sure
the cap is not bent.
Bushings may be damaged
or worn
Inspect the bushings for
damage or wear. Replace
any damaged or worn
components and run the
drag check again.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
57
Appendix
Diagrams - Drive Assembly
#120-58-005 - Drive Assembly - For High Pressure and Low Pressure SGSM
1
2
4
4. Screw, Pan Head, 10-32 × .75"L,
Qty: 4
5. Lock Washer, Qty: 4
7. 120-53-37
Connector, Motor to Board, 10
Position, Qty: 2
8. 120-53-20
Flange for Motor Mount
9. 120-53-33
Spring for Load Cell
10.120-53-22
Post for Torque Spring, Tall
Post for Torque Transducer
7
13.120-53-60
Retaining Ring, Internal
14.120-53-041Bearing
30
29
28
7
11
12
13
14
20
Thumb Screw, 6-32 × .375"L, Qty: 6
12.120-53-17
10
19
3. 120-53-57
Post for Torque Spring, Short
9
18
Body for Drive Cover
11.120-53-21
8
17
2. 120-53-15
6
5
16
Cap for Drive Cover
6. 130-76-28Motor
3
15
1. 120-53-16
15.
Nut, 4-40, 3/16"W × 1/16"H
16.120-58-08
Calibration Stand
17.120-610
Screw, Phillips, Pan Head, 4-40 ×
.375"L
18.120-58-11
Pulley for Calibration Stand
19.120-58-10
Thumb Screw, 10-32 × ⅜"L
20.120-53-11
Drive Base
21.120-53-55
Thumb Screw for Load Cell, 6-32 ×
½"L
22.120-53-34
Load Cell
23.120-53-18
Mount for Torque Transducer
24.
Screw, Pan Head, #8-32 × 9/16" LG,
Qty: 2
25.
Set Screw, Hex, Flat Pt, 8-32 × 3/16",
Qty: 2
26.120-53-02
Magnet for Driver Assembly
27.120-58-14
Support for Drive Assembly
28.120-53-75
A/D Board Assembly
29.120-53-29
Connector for Load Cell, 5 Pin
30.120-53-30
Connector for Motor, 6 Pin
21
22
23
24
25
26
27
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
58
Appendix
Diagrams - High Pressure Cell Assembly
#120-58-006 - Cell Assembly for High Pressure SGSM
1. 120-51-024
1
2
2. 120-51-024-1 Plug, Medium Pressure
3
4
5
6
7
8
10
11
12
13
14
16
17
18
17
19
3. 120-53-09
Cover for Driven Magnet
4. 120-58-010
Magnet Shaft Assembly
5. 120-53-13
Base Flange
6. Screw, Hex Head Cap, #6-32 × ⅜"
Long, Qty: 6
7. 120-53-42
Bushing, Qty: 2
8. 120-53-82
Retaining Ring, External
9. 120-53-32O-ring
9
15
Gland, Medium Pressure
7
10.120-53-58
Backup Ring, Upper
11.120-58-04
Mounting Adapter
12.120-53-59
Backup Ring, Lower
13.120-53-31O-ring
14.120-58-05
Retaining Ring
15.120-51-4
Handle, Qty: 2
16.120-58-03
Cell Cap
17.120-58-38
Retaining Ring, Internal, Qty: 2
20
18.120-58-23Diaphragm
21
19.120-50-027-1 Seal Ring, Qty: 2
22
20.123-011
O-ring, Qty: 2
21.120-50-026
Retaining Ring, External
22.120-53-01
Vane Paddle Assembly
23
23.120-50-021A Cell Body
24.120-50-021B Bottom Cap
20
19
24
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
59
Appendix
Diagrams - Low Pressure Cell Assembly
#120-53-006 - Cell Assembly for Low Pressure SGSM
1. 120-51-024
1
2. 120-51-024-1 Plug, Medium Pressure
2
3
4
3. 120-53-09
Cover for Driven Magnet
4. 120-53-010
Magnet Shaft Assembly
5. 120-53-13
Base Flange
6. Screw, Hex Head Cap, #6-32 × ⅜"
Long, Qty: 6
7. 120-53-42
Bushing, Qty: 2
8. 120-53-82
Retaining Ring, External
5
6
7
9. 120-53-32O-ring
8
10.120-53-58
Backup Ring, Upper
11.120-58-04
Mounting Adapter
12
12.120-53-59
Backup Ring, Lower
13
13.120-53-31O-ring
9
10
11
14
15
16
17
18
17
19
20
Gland, Medium Pressure
7
14.120-58-05
Retaining Ring
15.120-51-4
Handle, Qty: 2
16.120-53-03
Cell Cap
17.120-53-38
Retaining Ring, Internal, Qty: 2
18.120-53-23Diaphragm
19.123-011
O-ring, Qty: 2
20.120-53-01
Vane Paddle Assembly
21.120-51-1
Cell Body
22.120-51-2
Bottom Cap
21
19
22
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
60
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 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 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 modified 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 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 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
“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 [email protected].
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
61