1. Why Choose a Dry Block Calibrator for Temperature Calibration?

Dry block calibrators use metal heating blocks instead of traditional liquid baths, avoiding contamination and transportation issues. They offer fast heating and cooling with stable temperature distribution, making them ideal for on-site rapid calibration of thermocouples, RTDs, and temperature transmitters.

Key Advantages:

• Fast heating and cooling: Reach target temperature within minutes

• High portability: Lightweight and easy to carry on-site

• Safe operation: No liquid medium, reducing burn and spill risks

• Wide temperature range: Typical models cover -25℃ to 650℃

2. Key Steps to Complete Calibration in 30 Minutes

Step 1: Preparation (Approx. 5 Minutes)

1. Confirm calibration standards

• Identify required temperature points (e.g., 0℃, 100℃, 200℃) according to production or testing requirements

• Ensure the reference thermometer (high-precision thermocouple or platinum RTD) is within its calibration validity

2. Check equipment status

• Ensure dry block calibrator power, display, and temperature control function properly

• Inspect metal heating block and insert holes for oxidation or contamination

3. Safety precautions

• Wear protective gloves and ensure proper ventilation

Step 2: Temperature Setting and Stabilization (Approx. 15 Minutes)

1. Set the target temperature

• Input the desired calibration point on the dry block calibrator panel, e.g., 100℃

2. Wait for stabilization

• After reaching the set temperature, wait an additional 2–3 minutes to ensure stable temperature distribution

• Monitor temperature fluctuation with the reference thermometer, ideally within ±0.1℃

3. Insert the probe

• Ensure tight contact between the probe and metal block to avoid measurement errors

Step 3: Data Collection and Recording (Approx. 8 Minutes)

1. Read and record data

• Record both reference thermometer readings and the device under calibration

• Recommended: take readings every 30 seconds and calculate the average

2. Multi-point calibration

• For multiple temperature points (e.g., 50℃, 150℃, 200℃), follow a sequential heating or cooling order

3. Fill out calibration report

• Include device model, serial number, ambient temperature, humidity, calibration date, and operator information

3. Tips to Improve Efficiency

• Plan temperature points wisely: Cooling after high temperatures can be assisted with fans to save time

• Use matching sleeves: Ensure probe fits properly for efficient heat transfer

• Record while calibrating: Reduces post-processing workload

• Maintain the dry block calibrator regularly: Keep heating blocks clean to prevent transmission errors

4. Common Issues and Solutions

1. Large temperature fluctuations

• Avoid working near drafts or strong airflow

• Check probe-to-hole fit

2. Calibration exceeds time limit

• Reduce number of temperature points

• Use a calibrator with faster heating/cooling performance

3. Inconsistent readings

• Verify reference thermometer calibration validity

• Ensure consistent probe insertion depth

5. Conclusion

Time is often cost in production and laboratory environments. By mastering preparation methods, temperature setting techniques, and data collection procedures, a dry block calibrator can efficiently complete a standardized temperature calibration within 30 minutes. This improves testing efficiency while providing reliable quality control assurance.