1. Overview of PR611

• Type: Portable dry block calibrator

• Temperature Range: -25℃ to 200℃ (varies by model)

• Precision: ±0.1℃

• Applications: Laboratory calibration, field verification, industrial process monitoring

• Key Features: Fast heating, uniform temperature distribution, multi-sensor compatibility, compact design

2. How PR611 Achieves ±0.1℃ Accuracy

1. Advanced PID Control System

• Proportional–Integral–Derivative (PID) algorithm ensures precise temperature regulation

• Continuously adjusts heating power to maintain stable set points

2. High-Quality Heating Block

• Aluminum or copper blocks with excellent thermal conductivity

• Uniform temperature distribution across all insertion sleeves

3. Precision Temperature Sensors

• Built-in high-accuracy thermocouples or RTDs monitor block temperature

• Real-time feedback allows the PID controller to minimize deviation

4. Rapid Stabilization

• Optimized heating profile enables quick reach of target temperature

• Reduces waiting time without sacrificing precision

5. Multi-Point Calibration Support

• Maintains ±0.1℃ accuracy across multiple temperature points

• Ensures consistent calibration for different devices or sensors

3. Practical Tips for Maintaining Accuracy

• Proper Probe Insertion: Ensure probes fit snugly and maintain consistent depth

• Allow Stabilization Time: Wait 1–2 minutes after reaching set point before recording

• Controlled Environment: Avoid drafts or nearby heat sources that can affect readings

• Regular Maintenance: Clean block and verify sensor calibration periodically

4. Advantages of PR611 for Portable Applications

• Combines portability and lab-grade precision

• Suitable for on-site and field calibration, reducing equipment downtime

• Supports multiple sensors and multi-point calibration

• Compact design with fast heating and uniform temperature

5. Conclusion

The PR611 demonstrates that portable calibrators can deliver high accuracy without compromise. By leveraging advanced PID control, precision sensors, and uniform heating blocks, it achieves ±0.1℃ control, making it ideal for both field and laboratory applications. Portable does not mean less precise—PR611 proves that mobility and reliability can coexist in modern calibration instruments.