High-temperature dry block heater Medusa 511

digital

Description
Medusa 511 is a temperature probe calibrator for probes from 50°C up to 700°C. It provides a large calibration volume with a 45 mm diameter and 285 mm depth. Optional accessories convert the unit for surface sensor calibration, a blackbody source for infrared thermometer calibration and an ITS-90 Fixed Points system with calibration uncertainties down to 0.001°C.

Zones and operation
In addition to the main temperature zone, two auxiliary zones at top and bottom compensate end losses to maintain a stable temperature inside the insert. For comparison calibrations, Medusa 511 is used with an insert. The standard insert includes six 8 mm diameter wells with 250 mm depth. An alternative insert (44 mm diameter × 170 mm depth) is available and suspends from the top of the bath with user-adjustable height.

Versions

• MEDUSA 511 B (Basic): controller displays setpoint and temperature measured by the control sensor. Supplied as standard with the 6-well insert (Ø 8 mm, depth 250 mm), Cal Notepad software, serial communication cable, user manual and traceability certificate.
• MEDUSA 511 S (Site): in addition to model B functions, includes a second digital indicator for reference probe, universal temperature input (Pt100 and thermocouples Types K, N, R, S, L, B, PL2, T, J, E), programmable up to 5 calibration points, a timer to control bath transitions and automate ITS-90 fixed point sequences. The indicator and controller are accessible via communication interfaces.

Key features

• Large calibration volume: 48 x 285 mm (value also referenced in key points)
• Temperature range: 50°C to 700°C
• Supports comparison calibration and Fixed Points ITS-90
• Compatible with long-length thermometers and probes

Specifications — summary
Temperature range: 50°C to +700°C
Absolute stability over 30 min: Calibration furnace ±0.03°C; Blackbody source ±0.1°C; Surface sensors ±0.5°C; ITS-90 Fixed Points ±0.001°C
Cool-down 550°C → 30°C: 5 h
Heat-up 30°C → 550°C: 90 min
Calibration volume: 45 x 285 mm depth (table) — Uncertainties: see graph provided on product sheet
Standard insert: 6 wells Ø 8 mm, depth 250 mm

Accessories and options

• Metal inserts: 511-06-01 (standard 6-well insert Ø 8 mm, depth 250 mm), 511-06-02 (unperforated insert), 511-06-03 (specific insert), 510-06-04 (height-adjustable equalisation block).
• Alternative wells: 6 x Ø 8 mm depth 157 mm (reference for alternative depth).
• Probes and targets: 935-14-95H/DB (working Pt100), 511-06-05 (blackbody target), 511-06-06 (insert and reference probe for surface sensor calibration).
• ITS-90 Fixed Point cells (metal or quartz): M 17668ML, M 17669ML, M 17671ML, M 17672ML (mini Indium, Tin, Zinc, Aluminium cells) delivered with purity certificate.
• Other accessories: 935-14-66 (reference probe for surface sensor calibration), 935-14-49 (reference probe for blackbody), 510-02-02C (insert for surface sensor calibration), 510-05-00 (support for Indium-to-Zinc cell), 511-05-01 (support for Aluminium cell), 931-22-58 (transport case).

Transport information
Dimensions without packaging: 430 x 310 x 300 mm
Weight without packaging: 25 kg

Technical characteristics / specifications

• Temperature range: 50°C to +700°C
• Stability (30 min): Calibration furnace ±0.03°C; Blackbody source ±0.1°C; Surface sensors ±0.5°C; ITS-90 Fixed Points ±0.001°C
• Heat-up (30°C → 550°C): 90 min
• Cool-down (550°C → 30°C): 5 h
• Calibration volume: 45 x 285 mm (table) — value 48 x 285 mm also referenced in key features
• Standard insert: 6 wells Ø 8 mm, depth 250 mm
• Dimensions: 430 x 310 x 300 mm
• Mass: 25 kg
• Display: Resolution 0.01 to 99.99 and 0.1 to 100.0 / 650.0; units °C, °F, K
• Power supply: 108 / 130 V (50 / 60 Hz) or 208 / 240 V (50 / 60 Hz) — 1800 Watts
• Communication interfaces: RS 232