Brookfield DV2+Pro Viscometer Instrukcja Użytkownika Pobierz pdf (Strona 19)

Brookeld 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ashes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 = TemperatureZ = Time

Figure II-18

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 100 101

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Brookfield DV2+Pro Viscometer Instrukcja Użytkownika Strona 19