Brookfield DV-II+ Programmable Viscometer Manual de usuario descargar pdf (Pagina 15)

Brookfield Engineering Labs., Inc. Page 15 Manual No. M/97-164-F1 102

II.6 Out of Range

The DV-II+ gives indications for out-of-range operation. When % (Torque) readings exceed 100%

(over-range), the display changes to that shown in Figure 15; EEEE will also appear in the display

for % and viscosity or shear stress:

cP EEEE 20.1C

10 RPM % EEEE

Figure 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+ flashes the % (Torque), cP (Viscosity), SS

(Shear Stress) and SR (Shear Rate) as shown in Figure 16:

cP 12.4 20.1C

10 RPM % 8.2

Figure 16

Negative % (Torque) will be displayed as shown in Figure 17:

cP ---- 20.1C

10 RPM % -2.2

Figure 17

Figure 18 is an example of the printed output of each of the above conditions.

Figure 18

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

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 74 75

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