Orton Ceramic Foundation offers RSV-1600 and RSV-1700 high-temperature rotational viscometers for measuring viscosities of molten materials at different temperatures, following ASTM C965-A criteria. They could also be used for testing according to ASTM C1276 and ISO 7884-2 standards.
Image Credit: Orton Ceramic Foundation
The Orton Rotating Spindle Viscometer (RSV) measures viscosities at certain temperatures using the constant angular velocity approach and creates a curve representing a molten material's viscoelastic behavior.
Measurements in both inert and reactive atmospheres are possible with Orton RSV devices. The latter is used with air/oxygen-sensitive materials, including slags, coal ash, and metals, while the former is most common in the glass sector. This capacity enables the simulation of an actual application's environment.
- Viscosity data at high temperatures up to 1700 °C (3092 °F)
- Air or inert and reactive atmosphere measurements
- Glass, coal ash, slags, metals, and other materials are tested
- Remote PC software for data collection and analysis, as well as multi-step programmable thermal cycles
- The instrument’s small footprint
- Orton has been using high-temperature furnaces and viscometers for more than 20 years
Image Credit: Orton Ceramic Foundation
Source: Orton Ceramic Foundation
| Model |
RSV-1600 |
RSV-1700 |
| Temperature |
RT to 1600 °C |
RT to 1700 °C |
| Viscosity |
Log10 (Poises): 1.2 - 6.5 |
Log10 (Poises): 1.2 - 6.5 |
| Viscometer |
Brookfield DV2T |
Brookfield DV2T |
| Thermocouple |
Type "S" |
Type "B" |
| Spindle & Sample Crucible |
Platinum (optional), other on request |
Platinum (optional), other on request |
| Sample Size |
75-175 ml / 400-500 g |
75-175 ml / 400-500 g |
| Core Instrument, L X D X H |
16" X 16" X 58" (410 X 410 X 1147 mm3)
|
16" X 16" X 58" (410 X 410 X 1147 mm3)
|
| Controller L X D X H |
18" X 12" X 5" (460 X 305 X 130mm3)
|
18" X 12" X 5" (460 X 305 X 130mm3)
|
Rotating Spindle Viscometer (RSV) (ASTM C965, C1276, ISO 7884-2)
Image Credit: Orton Ceramic Foundation
- Orton designed the device to accommodate a platinum crucible and spindle
- A vertical fixed-position tube furnace heats the sample crucible while it is supported by a motorized lift pedestal
- The sample thermocouple at the crucible's base monitors the sample as it is kept at a preset soak temperature until thermal equilibrium is achieved
- The viscometer turns the spindle at a predefined rotational speed after it is manually lowered into a molten sample
- The results are automatically recorded as a function of rotational velocity and sample temperature
- This procedure is performed at a variety of rotational speeds and soak temperatures
- Data is collated, and viscosities are determined in accordance with ASTM C965 Procedure A
Glass Viscosity as a Function of Temperature
Image Credit: Orton Ceramic Foundation
High Temperature Viscometers
Source: Orton Ceramic Foundation
| Model Number |
Beam Bending (BBV) |
Parallel Plate (PPV) |
Rotating Spindle (RSV) |
| |
 |
 |
 |
| Model |
BBV-1000 / BBV-1200 |
PPV-1000 / PPV-1200 |
RSV-1600 / RSV-1700 |
| Temperature |
RT to 1000 °C / RT to 1200 °C |
RT to 1000 °C / RT to 1200 °C |
RT to 1600 °C / RT to 1700 °C |
| Viscosity |
Log10 (Poises): 14.0-9.0 |
Log10 (Poises): 9.0-5.0 |
Log10 (Poises): 6.5-1.2 |
| Standards |
ASTM C-598; ASTM C1350M |
ASTM C-1351M |
ASTM C-965; C-1276; ISO 7884-2 |
| Thermocouple |
Type "S" |
Type "S" |
Type "S" / Type "B" |
| Sample Holder |
Fuzed Quartz / Alumina |
Fuzed Quartz / Alumina |
Platinum crucible (optional) |
| Sample Size |
Ø2.53-3.78 mm rod / 2.21-3.31 mm bar |
Ø6-12mm by 3-6 mm thick |
75-175 ml / 400-500 g |
| Measuring Unit L X D X H |
12" X 14" X 33" (305 X 355 X 840mm3)
|
12" X 14" X 33"
|
16" X 16" X 58" (410 X 410 X 1170mm3)
|
| Controller L X D X H |
18" X 12" X 5" (460 X 305 X 130mm3)
|
18" X 12" X 5" (460 X 305 X 130mm3)
|
18" X 12" X 5" (460 X 305 X 130mm3)
|