Medusa R 999 Blackbody Fixed-Point Temperature Calibrator. Temperature range 30°C to 550°C.
The Medusa R is a blackbody primary source in which radiation pyrometers can be calibrated.
Specifically designed to accommodate black body fixed point cells, the Medusa-R is the optimal choice for
primary labs needing the highest levels of radiation measurement.
The temperature of the cavity can be set to ±0.1°C over the temperature range 30°C to 550°C.
The controller reaches 550°C approximately 45 minutes from switch on.
Also, the cavity temperature, as measured by a radiation thermometer took approximately 45 minutes
to reach stability from switch on.
Blackbody primary source
| Model | Description |
|---|---|
| 999 | Medusa R Blackbody primary source |
The variation seen on the controller’s temperature indication over a 5 minute period was ±0.2°C.
Similar variations were detected by a radiation thermometer looking into the cavity. Using a portable radiation thermometer having a target diameter of 13mm, the 48mm target was surveyed.
Maximum temperature differences of ±1°C were found for set temperatures in the range 100°C to 500°C.
Temperatures along the inner 200mm of the 285mm long cavity were measured at 400°C and 500°C, using a hand held fiber-optic radiation probe. Maximum temperature differences of ±4°C were found.
Large Fixed Point Cells can be fitted to the Medusa R giving small uncertainties suitable for Primary Standards.
Similar variations were detected by a radiation thermometer looking into the cavity. Using a portable radiation thermometer having a target diameter of 13mm, the 48mm target was surveyed.
Maximum temperature differences of ±1°C were found for set temperatures in the range 100°C to 500°C.
Temperatures along the inner 200mm of the 285mm long cavity were measured at 400°C and 500°C, using a hand held fiber-optic radiation probe. Maximum temperature differences of ±4°C were found.
Large Fixed Point Cells can be fitted to the Medusa R giving small uncertainties suitable for Primary Standards.
Blackbody Fixedpoint Calibrator specification
| Model | 999 |
| Temperature Range | 30°C to 550°C |
| Emissivity | Greater than 0.995 |
| Stability | ± 0.05°C |
| Display Resolution | 0.01°C to 99.99; 0.1°C from 100.0 to 550.0 |
| Cavity Size | 45mm diameter 285mm deep |
| Time to Temperature | 45 minutes |
| Supply | 110 VAC ± 10% (50/60Hz) |
| Dimensions | 480mm x 425mm x 260mm (HxWxD) |
| Weight | 37.5 lbs (17kg) |