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
• Microprocessor control of temperature between ambient and 232°C (450°F)‚ and down to __20°C (__4°F) with an external chiller

• Integrated digital timing for convenient measurement of sample efflux times

• HKV4000 model permits entry of viscometer constants for automatic calculation and display in viscosity units or seconds

• Dual digital displays show setpoint and actual bath temperature

• Selectable temperature scale - Fahrenheit or Celsius

• Integrated redundant over-temperature and low liquid level cut-off circuitry

• Conforms to ASTM D445‚ D2170 and related specifications for kinematic viscosity testing


Click on the image to view a larger photo of the instrument.

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HKV3000 and HKV4000 High Temperature Kinematic Viscosity Baths
Constant temperature bath series with advanced temperature controlcircuitry and integrated timing features for convenient‚ accurate glasscapillary viscometry determinations. Microprocessor PID circuitryassures precise‚ reliable temperature control within ASTM specifiedtolerances throughout the operating range of the bath. Simplepush-button controls and dual digital displays permit easy setting andmonitoring of bath temperature. Two place calibration offset capabilityis provided. Baths accommodate seven glass capillary viscometers ofvarious types. Viewing the viscometers is made easy by glare-freefluorescent illumination inside the bath and a baffle that provides abackground for easy viewing. Temperature control uniformity is assuredby means of motorized stirrer which provides complete circulationwithout turbulence. Connection of the built-in cooling coil to tapwater or a recirculating water chiller facilitates temperature controlat ambient or below ambient temperatures. Communications software(RS232‚ etc.) ramp-to-set‚ and other enhanced features are available atadditional cost. Contact your Koehler Customer Service representativefor more information.

Integrated Timing Features _ HKV3000 incorporates seven digital timerson the front control panel for convenient timing and monitoring of theefflux interval for each viscometer. On HKV4000‚ the user can enter theviscosity constant for each viscometer on the front LCDcontrol/display‚ and then get the test result in both efflux time andviscosity units automatically after stopping each timer. All timingfunctions on both models are displayed in 0.01 second resolution andare accurate within 0.01%.

Bath Construction and Safety Features _ Bath chamber is a clear Pyrexvessel enclosed in a polyester-epoxy finished steel housing. Topworking surface has seven 2" (51mm) viscometer ports and is constructedof stainless steel for easy cleaning. Front viewing window assuressafe‚ distortion-free viewing. Microprocessor temperature controllerincorporates safety circuitry that interrupts power to the heaters inthe event of an over-temperature condition or disconnection of theprimary probe. For added safety‚ a redundant adjustable controller withseparate sensor probe interrupts power if an over-temperature situationoccurs. An integrated low-liquid sensor prevents operation of the bathif the bath liquid is not filled to the proper level‚ and cuts offpower should it fall below during operation. Both over-temperature andlow liquid level circuits will latch and prevent further operation ofthe bath until the fault is removed. Bath rests on adjustable levelingfeet. All electronics are mounted on a sliding tray for easy access.Includes thermometer holder and seven plastic port covers with handles.

Specifications
Conforms to the specifications of: ASTM D445‚ D2170‚ D6074‚ D6158; IP 71‚ 319; ISO 3104; DIN 51550; FTM 791-305; NF T 60-100

Temperature Range: ambient to 232°C (450°F); __20°C to 232°C (__4°F to 450°F) with an external chiller

Temperature Control Display: 0.1°C/°F resolution‚ calibrate to 0.01°C/0.01°F

Temperature Control Accuracy and Uniformity: Exceeds ASTM requirements throughout the operating range

Integrated Timing:
HKV3000 _ Seven individual start/stop timers with displays to 0.01 seconds‚ accurate to within 0.01%
HKV4000 _ Seven start/stop buttons with integrated LCD display‚retention of viscometer constant‚ automatic calculation and display inviscosity units or seconds to 0.1 seconds‚ accurate to within 0.01%.

Communication: RS232 port included with HKV4000 (optional for HKV3000)

Viscometer Ports: Seven round 2" (51mm) ports

Bath Medium: Water or suitable heat transfer fluid

Bath Capacity: 5.8 gal (22L)

Bath Depth: 12" (31cm)

Electrical Requirements
115V‚ 50/60Hz‚ Single Phase‚ 12.7A
220-240V‚ 50/60Hz‚ Single Phase‚ 7.3A

Included Accessories
Port Covers‚ Delrin® (7)
Thermometer holder

Dimensions lxwxh‚in.(cm)
20x15x24 (51x39x62)
Net Weight: 83 lbs (38kg