Falling-Ball Viscometer / Hoeppler manual
The classic falling-ball viscometer works according to the Hoeppler principle. It measures the time a ball takes to move through the sample liquid. To obtain viscosity values, a calibration with a viscosity reference standard and the sample's density are required. The Hoeppler principle defines a falling angle of 80°. A liquid bath thermostat is responsible for temperature control. The reading is done manually by the operator.
Physics
- Measured quantity: Time
- Calculated quantity (sample density required): Dynamic viscosity
Learn more about the Falling Ball Principle.
Performance
The measuring range of the falling-ball viscometer depends on the ball used. With all available balls a wide measuring range can be covered. The precision also depends on the ball used.
- Viscosity measuring range - with 6 different balls: 0.5 mPa.s to 70,000 mPa.s
- Accuracy: 0.5 % to 2.0 % depending on the ball used
- Temperature measuring range: -60°C (-76°F) to 150°C (302°F)
Temperature control
Temperature control is done with a liquid bath thermostat.
Sample
- Typical sample volume: 40 mL
- Suitable for transparent samples.
Standards and Norms
DIN 53015, ISO 12058
Overview
| Viscometer type | Hoeppler Viscometer |
|---|---|
| Measuring principle | Falling-Ball Viscometer |
| Manual | |
| Hoeppler | |
| Measured quantity | time |
| Calculated quantity | dynamic viscosity (density required) |
| Viscosity range - min | 0.5 mPa.s |
| Viscosity range - max | 70,000 mPa.s |
| Temperature - min | -60°C |
| Temperature - max | +150°C |
| Liquid bath thermostat required | yes |
| Temperature change with same filling | no |
| Automation possible | no |
| Sample volume - typical | 40 mL |
| Solvent volume - typical | --- |
| Sample throughput - max / h | 2 |
| Measuring accuracy | < 1 % |
| Shear rate control | no |
| Shear rate calculation | no |
| Lab space | < 0.25 m² |
| Standards and norms | DIN 53015, ISO 12058 |
We offer typical values which are based on the values in brochures and standards but are not related to specific instruments.