Isotech 511 Medusa Three‑Zone High‑Temperature Dry Block Calibrator

The Isotech 511 Medusa 3 is the high‑temperature model in the Medusa range, extending the operating limit to 700 °C. Its advanced three‑zone control — with independent top, middle and bottom heaters — creates an exceptionally uniform temperature field across the full depth of the calibration well.

Three‑zone architecture for superior uniformity

At high temperatures, end losses normally create significant gradients. The Medusa 3 actively compensates for these effects, producing a flat, stable temperature profile ideal for demanding comparison calibrations and for realizing ITS‑90 fixed points up to aluminium.

Large calibration volume for long sensors

With a 45 × 285 mm calibration chamber, the Medusa 3 accommodates long PRTs, thermocouples and industrial sensors requiring full immersion. Standard and adjustable inserts are available to support a wide range of applications.

Models and functionality

The Medusa 3 is available as Basic and Site.

Basic
> dual display
> ramp‑to‑setpoint
> multi‑point block correction

Site
> built‑in reference‑probe indicator
> PT100, thermocouple and 4–20 mA support
> automated ITS‑90 routines
> five‑point digital probe matching

Thermal performance

The Medusa 3 achieves:

> Dry block: ±0.03 °C
> Blackbody: ±0.1 °C
> Surface sensor: ±0.5 °C
> ITS‑90 fixed points: ±0.001 °C

The Isotech 511 Medusa 3 is a high‑performance dry block calibrator for laboratories requiring high temperatures, deep immersion and exceptional uniformity. Its three‑zone control and ITS‑90 compatibility make it one of the most advanced systems in its class.