Rotational Viscometers
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Determines the dynamic viscosity of a substance by the rotation of a specified spindle within the sample at the speed giving the maximum torque reading on the viscometer. The resulting torque reading is used to calculate the viscosity of the substance.
Koehler offers 4 series of Rotational Viscometers
- Digital Series
- Advanced Digital Series
- Programmable Series
- Advanced Programmable Series
Digital & Advanced Digital
- Speeds: 0.3 to 100 RPM
- Number of Increments: 18
Programmable & Advanced Programmable
- Basic Speeds: 0.1 to 200 RPM
- Advanced Speeds: 0.10 to 250 RPM
- Basic Number of Increments: 200
- Advanced Number of Increments: 2,600
Key Features
- No calculations required:
- Direct reading of viscosity in cP or mPa·s
- Displayed Information:
- Viscosity (cP or mPa·s)
- % Torque
- Speed/Spindle
- Easy to use:
- Flip a switch
- Turn a knob
- Auto Range Button:
- Push for determining full scale range (FSR) viscosity
Ordering Information
| Part # | Series | Type | Electrical |
|---|---|---|---|
| K34750 | Digital Rotational Viscometer | Low Viscosity (L) | 115V 60Hz |
| K34751 | Digital Rotational Viscometer | Low Viscosity (L) | 230V 50Hz |
| K34752 | Digital Rotational Viscometer | Low Viscosity (L) | 230V 60Hz |
| K34753 | Digital Rotational Viscometer | Mid Viscosity (R) | 115V 60Hz |
| K34754 | Digital Rotational Viscometer | Mid Viscosity (R) | 230V 50Hz |
| K34755 | Digital Rotational Viscometer | Mid Viscosity (R) | 230V 60Hz |
| K34756 | Digital Rotational Viscometer | High Viscosity (H) | 115V 60Hz |
| K34757 | Digital Rotational Viscometer | High Viscosity (H) | 230V 50Hz |
| K34758 | Digital Rotational Viscometer | High Viscosity (H) | 230V 60Hz |
Key Features
- User Configuration Display:
- User choice of most important parameter is displayed in larger font size
- Choice of static or scrolling display mode
- Displayed Information:
- Viscosity (cP, P, mPa·s, or Pa·s)
- % Torque
- Speed/Spindle
- Temperature (°C or °F)
- *If RTD Temperature Probe is purchased
- Choice of Multiple Languages:
- English, French, German, Portuguese, Russian, Spanish
- USB PC Interface for use with optional Software
- Direct Access:
- To time measurement function (time to torque, time to temperature, time to stop)
- Automatic Range Calculation
- Full Scale Range (FSR) at 100%
- Maximum Viscosity measured with Spindle/Speed combination
- Temperature Off-Set capability to ±5°C
Ordering Information
| Part # | Series | Type | Electrical |
|---|---|---|---|
| K34740 | Advanced Digital Rotational Viscometer | Low Viscosity (L) | 115V 60Hz |
| K34741 | Advanced Digital Rotational Viscometer | Low Viscosity (L) | 230V 50Hz |
| K34742 | Advanced Digital Rotational Viscometer | Low Viscosity (L) | 230V 60Hz |
| K34743 | Advanced Digital Rotational Viscometer | Mid Viscosity (R) | 115V 60Hz |
| K34744 | Advanced Digital Rotational Viscometer | Mid Viscosity (R) | 230V 50Hz |
| K34745 | Advanced Digital Rotational Viscometer | Mid Viscosity (R) | 230V 60Hz |
| K34746 | Advanced Digital Rotational Viscometer | High Viscosity (H) | 115V 60Hz |
| K34747 | Advanced Digital Rotational Viscometer | High Viscosity (H) | 230V 50Hz |
| K34748 | Advanced Digital Rotational Viscometer | High Viscosity (H) | 230V 60Hz |
Key Features
- 5-Inch Full Color Touch Screen Display:
- Simplified User Interface
- Enhanced Controls
- Real Time Trend Indicator
- Supports Multiple Languages
- Displayed Information:
- Viscosity (cP or mPa·s)
- Temperature (°C or °F)
- Shear Rate/Stress
- % Torque
- Speed/Spindle
- Step Program Status
- Enhanced Security:
- Customizable User Access, Date and Time Stamp File, Password Access, Portable Log-in Settings
- Built-In Options:
- Timed Tests, Data Averaging, Programmable QC Limits/Alarms, Customizable Speed/Spindle Lists, Test Based User Instructions, On Screen Data Comparison
- Auto Range Showing
- Maximum Viscosity measured with Spindle/Speed Combination
- Download Custom Test Programs
- Built-In RTD Temperature Probe
- Convenient Bubble Level
Ordering Information
| Part # | Series | Type | Electrical |
|---|---|---|---|
| K34760 | Programmable Rotational Viscometer | Low Viscosity (L) | 115V 60Hz |
| K34761 | Programmable Rotational Viscometer | Low Viscosity (L) | 230V 50Hz |
| K34762 | Programmable Rotational Viscometer | Low Viscosity (L) | 230V 60Hz |
| K34763 | Programmable Rotational Viscometer | Mid Viscosity (R) | 115V 60Hz |
| K34764 | Programmable Rotational Viscometer | Mid Viscosity (R) | 230V 50Hz |
| K34765 | Programmable Rotational Viscometer | Mid Viscosity (R) | 230V 60Hz |
| K34766 | Programmable Rotational Viscometer | High Viscosity (H) | 115V 60Hz |
| K34767 | Programmable Rotational Viscometer | High Viscosity (H) | 230V 50Hz |
| K34768 | Programmable Rotational Viscometer | High Viscosity (H) | 230V 60Hz |
Key Features
- 7-Inch Full Color Touch Screen Display
- Real Time Graphing
- Supports Multiple Languages
- Displayed Information:
- Viscosity (cP, P, mPa·s, or Pa·s)
- Temperature (°C or °F)
- Shear Rate/Stress
- % Torque
- Speed/Spindle
- Step Program Status
- Math Model Calculations
- Built-In Math Models:
- For Data Analysis in Stand-Alone Mode
- Enhanced Security
- Built-In Options:
- Math Modeling, Temperature Control, Yield Tests, Programmable QC Limits/Alarms
- Analyze Characteristics:
- Such as Yield Stress, Flow Curves (mixing, pumping, spraying) Leveling and Recovery
- Internal Data Storage: 150 MB
- Stand-Alone Programming or Download Custom Tests
- Built-In RTD Temperature Probe
- Convenient Bubble Level
Ordering Information
| Part # | Series | Type | Electrical |
|---|---|---|---|
| K34730 | Advanced Programmable Rotational Viscometer | Low Viscosity (L) | 115V 60Hz |
| K34731 | Advanced Programmable Rotational Viscometer | Low Viscosity (L) | 230V 50Hz |
| K34732 | Advanced Programmable Rotational Viscometer | Low Viscosity (L) | 230V 60Hz |
| K34733 | Advanced Programmable Rotational Viscometer | Mid Viscosity (R) | 115V 60Hz |
| K34734 | Advanced Programmable Rotational Viscometer | Mid Viscosity (R) | 230V 50Hz |
| K34735 | Advanced Programmable Rotational Viscometer | Mid Viscosity (R) | 230V 60Hz |
| K34736 | Advanced Programmable Rotational Viscometer | High Viscosity (H) | 115V 60Hz |
| K34737 | Advanced Programmable Rotational Viscometer | High Viscosity (H) | 230V 50Hz |
| K34738 | Advanced Programmable Rotational Viscometer | High Viscosity (H) | 230V 60Hz |