AMETEK Brookfield In-line Products

PVS Rheometer

PVS Rheometer Ranges
BOB/STATOR SAMPLE CUP	VISCOSITY RANGE cP (mPa·s)	SHEAR RATE (sec-1)	SAMPLE VOLUME (mL)*
PVS-B1-D-HC	2-5M	1.7N	12
PVS-B2-D-HC	20-36M	0.38N	55
PVS-B5-D-HC	5-10M	0.85N	25
PVS-TA5B5-D-HC	.5-1M	0.85N	160

* ± 1mL HC=Hastelloy C M=1 Million N=RPM mL=Milliliter

Characteristic

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Dimensions

Material

Accessories

Characteristic

The PVS is a dynamic coaxial cylinder, controlled shear rate rheometer allowing quick and easy viscosity measurements under pressure at temperatures where sample boil-off is a problem.
The PVS can be used to simulate process conditions for small fluid samples in a laboratory benchtop environment. Applications include chemical compounds containing volatile materials, oil industry, drilling muds and fracturing fluids, processed foods, polymers and paints. Any test sample requiring absolute viscosity measurement under totally enclosed conditions is a viable candidate.

Portabe site-to-site mobiity with 1' x 1' x 2' instrument footprint
Rheovision software for automation and contro of a test parameters
Designed to operate in severe environments with Hasteoy cups and bobs standard
Quick and easy to operate
Measures sampes from vacuum to high pressure of up to 1000 psi
Safety reief vave incuded
Measures under temperature conditions: -40°C to +260°C
RTD temperature sensor on the inner cyinder surface insures accurate sampe temperature
Runs test to API industry standard
SRV measurements to 0.2 sec-1

Simuation of In-Process conditions:
Down Hoe
Cooking
Bending
Reactors
Robust motor capabe of speeds up to 1000 RPM
Outside cyinder rotates at shear rates up to 1700 sec-1, spinde inside remains stationary
Avaiabe with tripe annuus geometry for increased sensitivity when measuring ow viscosity fuids
Quick and easy setup
Compete with choice of spinde (bob), cup, Rheovision Software and computer
Industria standards

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Brookfield Operation and Maintenance Manual

Principle of Operation

The outer cylinder (sample cup) is driven by a stepper motor at speeds from 0.05 RPM to 1000 RPM. The inner cylinder (bob) contains an RTD probe on the surface to provide temperature measurement where the shear stress is being measured. Several cup and bob designs with different geometries are available to suit various applications.
The unique torque tube design enables the instrument to respond to minute changes in viscosity, mechanically transmitting a rotational torque signal out of the pressure containment area without friction. Thus all electronics, bearings, and other sensitive components are completely protected from the influences of both the sample fluid and its vapor.