Patent No. 6,766,028 - OFI Testing Equipment, Inc.
OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ote.com 19
Operation
Standalone
When operating in stand-alone mode, the keypunch panel on the top of the
viscometer is used. Following are descriptions of the buttons:
1. Individually numbered buttons on left side - 0 (zero) through 9 (nine)
Used to set RPM or 1/s. Accurate to two decimal places (0.01 RPM).
After entering the desired shear rate, follow by pressing the ENTER key.
2. Numbered buttons on right side - 600, 300, 200, 100, 60, 30, 20, 10, 6,
3, 2 and 1
These are shear rates typically used in oileld rheology, and provide a
quick and convenient means of changing the rotor speeds. The RPM
speed may be quickly and directly changed by pressing the numbered
pads. No programming or any other entry is necessary.
3. CLEAR / STOP
Used to end a test sequence, or to re-enter.
4. NEXT
Used for sequencing functions.
5. SET UP
Used to program the machine. The unit prompts you to enter a value for
each parameter, or you can simply press NEXT to accept the defaults.
Descriptions of the parameters in the order they appear on the display
follow below:
a. “Temperature”:
“Current”: Set point target temperature for machine to ramp to.
“New”: New target temperature.
Press ENTER and then NEXT.
b. “Bob #”: 1 is standard
“New (1 - 5)”: Use if another bob (B1, B2, B3, etc.) is used.
Press ENTER and then NEXT.
c. “SS Units”: Changes the shear stress measuring units that are
displayed. Enter selection number or leave alone if unchanged.
1 = Dynes/cm
2
2 = Pa (Pascal) 5 = lb/ft
2
3 = lb/100ft
2
4 = D.R. (*Dial Reading)
Press ENTER and then NEXT.
*Used to calculate an association with a mechanical viscometer.
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