Table of Contents
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Table D-2 lists the model codes and spring torque constants for each Viscometer model.
Model
DVPlusLV
DVPlusRV
DVPlusHA
DVPlusHB
The full-scale viscosity range for any DVPlus model and spindle may be calculated using the equation:
Full-Scale Viscosity Range
Where:
TK
= DVPlus Torque Constant from Table D-2
SMC
= Spindle Multiplier Constant from Table D-1
The following equations can be used to calculate the strain data after each packet of data is obtained from the
DVPlus:
(Shear Stress (D/cm2)) = Viscosity (P) * Shear Rate (1/sec)
The immersion mark selected affects the stress calculations. Ensure the selected immersion mark reflects the mark
in use.
Each spindle has a Yield Multiplier Constant (YMC) for stress calculations and a Spindle Multiplier Constant (SMC)
for calibration checks (see Appendix E) as shown in Table D-3. Spindle dimensions are also listed.
Spindle
V-71
V-72
V-73
V-74
V-75
The full scale Yield Stress range for any DVPlus model and spindle may be calculated using the equation:
Full Scale Yield Stress Range (Pa) = TK x YMC x 10
Where:
TK = DVPlus Torque Constant from Table D-2
YMC = Yield Multiplier Constant from Table D-3
The following speeds are available for yield tests.
M21-400 REV.1.1
= TK * SMC * SRC * TORQ
Entry Code
YMC
71
72
73
74
100.0
75
40.0
Note: If secondary immersion mark is selected, the YMC value is doubled.
D V P L U S D I G I TA L V I S C O M E T E R - O P E R AT I O N A L M A N U A L
Table D-2
TK
0.09375
1
2
8
Table D-3
SMC
0.5
2.62
2.0
11.1
10.0
53.5
543
213
Model Code on DVPlus Screen
LV
RV
HA
HB
Vane Length
Vane Diameter
Inches
cm
Inches
2.708
6.878
1.354
1.706
4.333
0.853
0.998
2.535
0.499
0.463
1.176
0.232
0.632
1.61
0.316
cm
3.439
2.167
1.267
0.589
0.803
56
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