K22690 Low Temperature Pressure Viscometer

Test Method
Apparent viscosity is used to evaluate pumpability and handling characteristics of greases and is also suitable for analysis of adhesives, sealants and other semi-solid products. The sample is forced through a capillary by means of a gear pump-driven hydraulic system and the resulting pressure in the system is measured. Apparent viscosity is then calculated from the flow rate and pressure. Eight different capillaries and two pump speeds are used to determine the apparent viscosity at sixteen shear rates.

Features and Benefits
• Conforming to ASTM D1092 and related specifications

• Mechanically refrigerated low temperature model

K22690 Low Temperature Pressure Viscometer
Low Temperature Pressure Viscometer
– Consists of power, hydraulic and grease systems with refrigerated test chamber. Hydraulic system includes constant displacement gear-driven metering pump, hydraulic oil reservoir with 50-mesh screen, stainless steel tubing, high pressure valve and fittings. Drive motor has interchangeable 40 and 64 tooth gears for two-speed operation. Four interchangeable gauges of 0-60, 0-100, 0-600 and 0-5000psi ranges monitor system pressure.

Supplied with three precision machined grease assemblies, each including piston, caps and thermocouple; set of eight (ASTM Nos. 1-8) stainless steel capillaries; and wrenches for gauge installation and removal. The refrigerated test chamber holds three cylinders at a time for sample preparation. Operating range is from ambient to –65°F (–53.8°C), with stability of ±0.5°F (±0.3°C). The refrigeration system uses hermetically sealed, self-lubricating compressors in cascaded configuration to provide efficient cool-down and trouble-free long term operation. Floor-mounted cabinet is constructed of polished stainless steel with a welded reinforced frame.

Pressure Viscometer – Complete apparent viscometer meeting ASTM D1092 specifications. Includes power, hydraulic and grease systems and standard accessories as supplied with the Low Temperature Pressure Viscometer but without refrigerated test chamber or stainless steel cabinet. Mounted on a sturdy base having locating feet for permanent benchtop placement.


Specifications
Conforms to: ASTM D1092

Operating Range: performs apparent viscosity determinations at sixteen different shear rates

Low Temperature Pressure Viscometer:
Temperature Range: ambient to –65°F (–54°C)
Optional –100°F cooling range available on special order*

Temperature Control Precision: ±0.5°F (±0.3°C) throughout the operating range

Test Chamber Medium: denatured alcohol

Included Accessories
Stainless Steel Grease Cylinder
Assemblies (3)
Thermocouples (3)
Set of Stainless Steel Capillaries (Nos. 1-8)
Interchangeable Pressure Gauges (4)
Interchangeable Pump Drive Gears, 40 and 64-tooth
Set of Wrenches (3)

Dimensions lxwxh,in.(cm)
Low Temperature Pressure Viscometer: 43.25x30.75x66.25 (110x78x168)
Net Weight: 640 lbs (290.3kg)

Pressure Viscometer: 30x12x36 (76x30x91)
Net Weight: 121 lbs (54.9kg)

Shipping Information
Low Temperature Pressure Viscometer:
Shipping Weight: 900 Ibs (408.2kg)
Dimensions: 89.8 Cu. ft.

Pressure Viscometer:
Shipping Weight: 186 lbs (84.4kg)
Dimensions: 14.8 Cu. ft.

Ordering Information
Catalog
Number
Product Description
Electrical Requirements
Low Temperature Pressure Viscometer
K22690
Low Temperature Pressure Viscometer
115V 60Hz
K22695
Low Temperature Pressure Viscometer
220-240V 50Hz
K22696 Low Temperature Pressure Viscometer 220-240V 60Hz
Pressure Viscometer
K22600 Pressure Viscometer 115V 60Hz
K22615 Pressure Viscometer 220-240V 50Hz
K22610 Pressure Viscometer 220-240V 60Hz
*Please contact Koehler Customer Service for ordering Information on the extended (–100°F) cooling range for the K22690 Series Low Temperature Pressure Viscometers.

Accessories
Catalog
Number
Product Description
K22690-0-27
Grease Cylinder Assembly for Low Temperature Pressure Viscometer (K22690 Series) – Includes piston and caps
K226-0-16
Grease Cylinder Assembly for Pressure Viscometer - (K22600 Series) – Includes piston and caps
K226-0-22
Capillary Set. Nos. 1-8
250-00-74F
ASTM 74F Thermometer
Range:
-67.5 to -62.5°F
250-000-74C
ASTM 74C Thermometer
Range: -55.4 to -52.6
°C
When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.

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