Viscometers and Rheometers

Fann manufactures a variety of instruments to test the viscosity of a drilling fluid or mud.  Ranging from the simple Marsh Funnel to to rotational viscometers like the industry standard Model 35 Viscometer to  the high pressure, high temperature iX77 Rheometer, the Fann line includes an instrument for any drillilng fluid testing need, in the field or in the lab.

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Chiller Model D4004
Provides controlled sample cooling for a iX77 Rheometer
Cold Water Rheology Kit
Provides controlled sample cooling for a Model 35 Viscometer
DNA System
The Fann DNA system is proprietary software and hardware used to connect multiple Fann Instrument Company products to a computer.
iX77™ Rheometer
A coaxial cylinder type Rheometer designed to measure fluid rheologies under high pressures and temperatures with a high degree of safety.
Marsh Funnel Viscometer
A simple device for indicating viscosity on a routine basis
Model 45 APV
The Model 45 APV (Automatic Programmable Viscometer) allows for customized, preprogrammed test schedules with touch screen controls digital measurement technology.
Rheometer Model 280 Hand-Powered
Requires very little field maintenance, and is the lightest field instrument available for determining plastic viscosity and yield point
Rheometer Model 50SL High Temperature
Designed for testing fluids at temperatures to 500°F (260°C) and pressures to 1,000 psig (7,000 kPa) in a coaxial cylinder chamber
RheoVADR Rheometer
The RheoVADR Variable Automated Digital Rheometer allows recording test data without connecting to a computer or network.
Viscometer - Model 35 Accessories
Accessories for the Model 35 Viscometer
Viscometer - Model 35
The Fann Model 35 Viscometer is the standard of the industry


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  Title Date
Summary Viscometer, Model 35 Jan 2016
Summary RheoVADR Instruction Manual Oct 2015
Summary Rheometer Model 50 SL Sep 2015
Summary Rheometer, ix77 May 2014
Summary Cold Water Rheology Kit May 2012
Summary Model 50 XP Software Kit Aug 2011
Summary Rheometer Calibration Fixture Model 280 & 286 Aug 2011
Summary Rheometer Model 280 Aug 2011
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