Brookfield DVE - Page 26

AMETEK Brookeld Page 26 Manual No. M15-356-B0916
DIN Adapter Accessory
DAA Spindle
Viscosity (cP)
Shear Rate
sec-1
DVELV DVERV DVEHA DVEHB
85 2 - 4,000 12 - 5,000 24 - 5,000 98 - 5,000 1.29N
86 4 - 11,000 37 - 10,000 73 - 10,000 292 - 10,000 1.29N
87 11 - 38,000 121 - 50,000 243 - 50,000 970 - 50,000 1.29N
N = RPM
Spiral Adapter
Spiral
Spindle
Viscosity (cP)
Shear Rate sec-1
DVELV DVERV DVEHA DVEHB
SA-70 98 - 98,500 1,000 - 1,050,000 2,100 - 2,100,000 8,400 - 8,400,000 .00677 - .677N (1-100 RPM)
N = RPM
Helipath with T-Bar Spindles
T-Bar
Spindle
Viscosity (cP)
DVELV DVERV DVEHA DVEHB
T-A 156 - 62,400 2,000 - 400,000 4,000 - 800,000 16,000 - 3,200,000
T-B 312 - 124,800 4,000 - 800,000 8,000 - 1,600,000 32,000 - 6,400,000
T-C 780 - 312,000 10,000 - 2,000,000 20,000 - 4,000,000 80 000 - 16,000,000
T-D 1,560 - 624,000 20,000 - 4,000,000 40,000 - 8,000,000 160,000 - 32,000,000
T-E 3,900 - 1,560,000 50,000 - 10,000,000 100,000 - 20,000,000 400,000 - 80,000,000
T-F 7,800 - 3,120,000 100,000 - 20,000,000 200,000 - 40,000,000 800,000 - 160,000,000
When taking viscosity measurements with the DVE Viscometer, there are two considerations, which
pertain to the low viscosity limit of eective measurement.
1. Viscosity measurements should be taken within the equivalent % Torque Range from 10%
to 100% for any combination of spindle/speed rotation.
2. Viscosity measurements should be taken under laminar ow conditions, not under turbulent
ow conditions.
e rst consideration has to do with the accuracy of the instrument. All DVE Viscometers have
a Full Scale Range allowable error of (+/-) 1% of any spindle/speed in use. We discourage taking
readings below 10% of range because the potential viscosity error of (+/-) 1% is a relatively high
number compared to the instrument reading.
e second consideration involves the mechanics of uid ow. All rheological measurements of
uid ow properties should be made under laminar ow conditions. Laminar ow is ow wherein