In-Line Viscometer - Grace InstrumentThe M3900 In-Line Viscometer is intended for use with a wide variety of fluids, with a special emphasis on fracturing fluid and drilling mud. Features:

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10770 Moss Ridge Rd., Bldg. B • Houston, TX USA 77043 • Phone: 713-783-1560 • Fax: 713-974-7144

M3900In-Line Viscometer

Mechanical Specifications:Dimensions: 12” tall x 4.5" wide

U.S. Patent: 8,850,874

Specifications: Viscosity Range: 5 cP to 300 cP - mPa.sSpeed Range: 3 and 6 rpm; 50 to 600 rpm continuousPressure Range: Up to 2,000 psiOutput: 0 to 5 VDC analog or RS485 Modbus

FluidEntry

FluidExit

Fluid flowsubmergesrotating bob.

Energyrequired torotate bobdeterminesviscosity.

No dynamic seal - the bob is the only moving part!Simple & fast cleaning and maintenance

Single rotating element submerged in test fluid without a dynamic sealThe only moving component in contact with test fluid is the rotating bob. This patent-pending design ensures reliability of test results over a longer period of time than any competing model can provide, without the use of any dynamic seal.

Easy breakdown for cleaning and maintenanceAccess to all internal components is accomplished by a one-action dismount, providing fast access for maintenance and cleaning, maximizing perfor-mance and minimizing maintenance.

The M3900 In-Line Viscometer is intended for use with a wide variety of fluids, with a special emphasis on fracturing fluid and drilling mud.

Features:• Compliant with API 13 and API 39• Viscosity measurement unaffected by fluid flow• Computer-controlled speed, viscosity measurement

and calibration• Multiple data export formats

The M3900 In-Line Viscometer has a unique and durable design, as shown in the illustration below:

Magnetic field causes magnet inside bob to rotate.

• M3900 PC Control / Data Acquisition software includedM3900 Control Box (included) controls programming, and also reads viscosity.