Temperature calibrator KG-300

liquid nitrogen

Product overview
The KAYE KG-300 is a liquid nitrogen (LN2) comparator designed for semi-automated temperature calibrations at the boiling point of liquid nitrogen (about -196 °C). Used with KAYE Validators, it provides a low‑evaporation, stable environment for extended calibrations. The unit accepts a thermocouple fixture for up to 48 thermocouples and secures a KAYE IRTD at the center of the calibration block for reference measurements.

Key features

• Engineered for semi-automated thermocouple calibration when paired with KAYE Validators
• Stainless steel Dewar for safe operation and durability
• Thermocouple holder supports up to 48 channels for simultaneous calibration
• Central IRTD seating in the calibration block for stable reference
• User-friendly fill port for controlled LN2 addition
• Low evaporation design for stable calibration points over several hours
• Foam lid included to reduce LN2 loss between calibrations
• Rugged wheeled carrying case for safe transport and storage

Applications

• Ultra-low temperature calibrations at approximately -196 °C
• Validation of ultra-low freezers
• Calibration of LN2 freezers and cold-chain equipment

Technical specifications

• Model: KG-300
• Type: temperature comparator (LN2 bath)
• Temperature: About -196 °C (dependent on atmospheric pressure)
• Stability: Typically better than 5 mK over 20 min
• Thermal wells: 18 × Ø 6.7 mm I.D.; 1 × Ø 3.1 mm I.D.; 1 × Ø 4.8 mm I.D.
• Immersion: 315 mm (top of TC fixture to bottom of well); aluminum block depth 140 mm
• Evaporation: ≈ 0.15 L/h with lid secured
• Volume: 5.5 L
• Outer diameter: 168 mm
• Height: 400 mm
• Includes: thermocouple holder for up to 48 channels, foam lid, rugged wheeled carrying case
• Note: Actual temperature and stability vary with atmospheric pressure (dt/dp >> 0.085 mK/Pa)