The Omega TRCIII-A is a portable thermoelectric ice point calibration reference chamber that maintains a precisely stable 0°C (32°F) environment for calibrating temperature sensors and measurement instruments. Using the natural equilibrium between ice and deionized water at atmospheric pressure, the device delivers ±0.1°C accuracy at 72°F ambient with ±0.03°C stability under constant conditions. Six thermally grounded reference wells (4.0 mm I.D., 95.25 mm depth) accept 1/8″ diameter probes and are controlled by a sealed bellows-actuated micro-switch system that regulates thermoelectric cooling elements. A built-in T-type thermocouple monitor provides 0.1° resolution digital readout. The unit stabilizes in 30 minutes from ambient (20°C/68°F) and operates across 2 to 32.2°C ambient temperature with up to 90% RH non-condensing humidity. Bench-top design with tilt handle; 12.7 kg, 203 mm H × 419 mm W × 304 mm D.
Technical Specifications
• Reference Temperature: 0°C (32°F)
• Well Accuracy: ±0.1°C (±0.18°F) @ 72°F ambient
• Well Stability: ±0.03°C (±0.05°F) constant ambient
• Reference Wells: Six (6) wells, 4.0 mm I.D., 95.25 mm depth
• Probe Compatibility: 1/8″ diameter
• Temperature Display Resolution: 0.1°
• Stabilization Time: 30 minutes (20°C to 0°C)
• Internal Sensor: T-type thermocouple
• Cooling Method: Thermoelectric elements with bellows-actuated micro-switch control
– Electrical Specifications
• TRCIII-A: 115 VAC~, 50/60 Hz, 104W
• TRCIII-A-230VAC: 230 VAC~, 50/60 Hz, 104W
• Fuse (115V): One, 250 VAC~, T500mA
• Fuse (230V): Two, 250 VAC~, T500mA each
• Line Voltage Tolerance: ±10% maximum
– Key Features
• Sealed cylindrical chamber with integrated control sensor
• Built-in digital display with 0.1° resolution
• Requires minimum 2″ clearance around unit for airflow
• Operates 2 to 32.2°C ambient, up to 90% RH non-condensing
– Compatibility & Integration
Designed for factory, calibration laboratory, and instrument shop environments. Wells are thermally and electrically grounded to each other for consistent reference conditions across all probe positions.
