Brookfield DV2+Pro Viscometer - Manual (Page 19)

Brookfield Engineering Labs., Inc. Page 19 Manual No. M03-165-F0612
II.6 Out of Range
The DV-II + Pro gives indications for out-of-range operation. When % (Torque) readings exceed
100% (over-range), the display changes to that shown in Figure II-15; EEEE will also appear in
the display for shear stress:
cP EEEE 20.1C
10 RPM % EEEE
Figure II-15
You must change either speed or spindle to correct this condition. If you operate at spindle speeds
that produce % (Torque) below 10.0 %, the DV-II+Pro flashes the % (Torque), cP (Viscosity), SS
(Shear Stress) and SR (Shear Rate) as shown in Figure II-16:
cP 12.4 20.1C
10 RPM % 8.2
Figure II-16
Negative % (Torque) will be displayed as shown in Figure II-17:
cP ---- 20.1C
10 RPM % -2.2
Figure II-17
Figure II-18 is an example of the printed output of each of the above conditions.
Normal Operation:
RPM=50 M=RV S=29 %=51.4 cP=10280 D/CM2=1285 1/SEC=12.3 T=20.1C Z00:30
Over-Range Operation (>100% torque) (see Fig. 15):
RPM=50 M=RV S=29 %=EEEE cP=EEEE
D/CM2=EEEE 1/SEC=12.3 T=20.1C Z00:30
Under-Range Operation (<10% torque) (see Fig. 16):
? RPM=50 M=RV S=29 %=5.2 cP=1040
D/CM2=130 1/SEC=12.3 T=20.1C Z00:30
Negative Torque Operation (see Fig. 17):
RPM=50
M=RV S=29 %=-0.1 cP=---- D/CM2=---- 1/SEC=12.3 T=20.1C Z00:30
M = Torque Range T = Temperature Z = Time
Figure II-18