Brookfield YR-1 Rheometer - Manual (Page 48)

Brookfield Engineering Labs., Inc. Page 48 Manual No. M02-215-B0412
Using the ↓ or ↑ key, set the CAL VERIFY setting to YES, then press the Enter key. Figure
C-3 appears on the rheometer display. Ensure the rheometer is level, and remove any attached
spindle before auto-zeroing.
REMOVE SPINDLE
PRESS ANY KEY
Figure C-3
5) After pressing a key, Figure C-4 is displayed with the text flashing.
AUTOZEROING
RHEOMETER
Figure C-4
When the auto-zero is complete, Figure C-5 appears on the rheometer display with OFFRPM
flashing.
CP 0.00 S71
% 0.0 OFFRPM
Figure C-5
6) Attach the spindle to be used in the calibration check and lower it completely (to the primary
immersion mark) into the appropriate Brookfield Viscosity Standard Fluid.
7) The viscosity standard fluid, together with the spindle, should be immersed in the bath for
a minimum of one (1) hour, stirring the fluid periodically, prior to taking measurements.
8) After one (1) hour, check the temperature of the viscosity standard fluid with an accurate
thermometer.
9) If the fluid is at test temperature (±0.1 °C of the specified temperature, normally 25 °C),
measure the viscosity according to the following steps and record the reading.
10) Use the ↓ and ↑ keys to select the speed to be used for the calibration check. Speeds between
0.1 and 100 rpm are available for use in checking the calibration. Once a speed is selected
by pressing the Enter key, the spindle rotates at this speed, the %-Torque and Viscosity
value are displayed, and the S71 begins flashing.
11) Use the ↓ and ↑ keys to select the spindle to be used for the calibration check. Once a spindle
is selected by pressing the Enter key, the viscosity value is computed and displayed.