Test Method

Kinematic viscosity is of primary importance in the design andselection of a wide range of petroleum products. Calibrated capillaryviscometers are used to measure flow under gravity or vacuum atprecisely controlled temperatures.

Features and Benefits

• Improved design with enhanced performance and safety features

• Standard -30ºC (-22ºF) LKV3000 model‚ and extended range -70ºC (-94ºF) LKV4000 model

• Microprocessor PID temperature control with two decimal calibration offset

• Dual digital displays show setpoint and actual bath temperature

• Selectable temperature scale - Fahrenheit or Celsius

• Conforms to ASTM D445‚ D6074 and related specifications for kinematic viscosity testing

Click on the image to view a larger photo of the instrument.
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LKV3000/LKV4000 Refrigerated Constant Temperature Baths

New refrigerated constant temperature bath series with improvements inoperating features‚ safety and cabinetry. Advanced temperature controlcircuitry includes microprocessor PID design and two decimalcalibration offset. Simple push-button controls and dual digitaldisplays permit easy setting and monitoring of bath temperature. Bathsaccommodate four glass capillary viscometers using 2" (51mm) roundholders (rectangular ports are available on special order). Bath mediumis contained in a clear‚ evacuated Dewar flask‚ and glare-freefluorescent backlighting provides excellent visibility when workingwith the viscometers.

Standard and Extended Range Models, Standard LKV3000 model operates attemperatures from ambient to -30ºC (-22ºF). Extended range LKV4000model operates at temperatures as low as -70ºC (-94ºF). Both modelsexceed ASTM temperature control accuracy and uniformity requirementsthroughout the operating range. Air-cooled hermetic compressors provideefficient operation with the use of CFC free refrigerants.

Bath Construction and Safety Features, Insulated steel cabinet has anattractive polyester-epoxy finish and is mounted on adjustable levelingfeet. Chemical resistant working (top) surface has four round ports for2" (51mm) viscometer holders and one port for a thermometer holder.Front viewing window provides clear‚ distortion-free visibility.Microprocessor controller incorporates circuitry that interrupts powerto the heater in the event of an over-temperature condition ordisconnection of the primary probe. A redundant adjustable controllerand sensor probe provide added over-temperature protection‚ and anintegrated low liquid level sensor removes power to the heaters if thebath liquid is not filled to the proper level or falls below duringoperation. Both over-temperature and low liquid level circuits willlatch and prevent further operation of the bath until the fault isremoved.

LKV5000 Refrigerated Constant Temperature Baths
with Optical Detection
Koehler LKV5000 series kinematic viscosity baths with the optical flow
detection system provides automatic viscosity measurements of petroleumand petrochemical products. Includes communication and power ports foreach optical detection assembly‚ and can utilize up to four opticalassemblies.
Optical sensors and viscometer tubes to be ordered separately

Specifications

Conforms to the specifications of: ASTM D445‚ D2532‚ D6074‚ D6158; IP 71; ISO 3104; DIN 51550; FTM 791-305

Testing Capacity: Four (4) glass capillary viscometers

Viscometer Ports: Four (4) round 2" (51 mm) ports

Bath Dimensions: 9.5" dia x 12" deep (24x30cm)

Bath Capacity: 3.7 gal (14 L)

Temperature Control:

Display: 0.1€_C/€_F resolution‚ calaibrate to 0.01€_C/0.01€_F
Control accuracy and uniformity: Exceeds ASTM requirements throughout the operating range

Included Accessories

Four (4) Delrin® viscometer port covers with handles
Thermometer holder

Dimensions lxwxh‚in.(cm)
42x35x36 (107x89x91)
Net Weight: 176 lbs (80 kg)

Shipping Information

Shipping Weight: 300 lbs (136kg)
Dimensions: 42 Cu. ft.