What tools or equipment are needed for metrological calibration?

Metrological calibration requires a series of special tools and equipment, and the specific tools or equipment depend on the types and specifications of the calibrated instruments. Generally speaking, metrological calibration usually uses the following tools or equipment:

1. Standard calibration instruments: including standard balance, standard weight, standard measuring cup, etc. Used to compare and adjust the accuracy of the calibrated instrument.

2. Calibration device: For example, it is used to adjust the environmental conditions such as temperature, humidity and pressure of the instrument.

3. Calibration software: a software tool for data acquisition, analysis and calibration record management.

4. Measuring instruments: such as multimeter, thermometer, pressure gauge, etc. Used for monitoring and measuring in the calibration process.

5. Data recording devices, such as recorders and computers, are used to store and manage calibration data.

6. Calibration certificate and label: used to prove that the instrument has passed the calibration and record the calibration results.

7. Calibration reports and documents: record all data, operations and results in the calibration process, and back them up for archiving.

The above tools or equipment are commonly used in metrological calibration, and which one to use depends on the instrument type and calibration requirements. Before calibration, it is recommended to consult professional metrology technicians or calibration laboratories to obtain more accurate information.

Note: The calibration of instruments in the laboratory is generally entrusted to an external company, and the measurement certificate requires qualification.