I. Instruments for Measuring Displacement
0-grade feeler gauge: Accurately measures the minute gap between the heated runner plate and the sensor probe, with a precision of up to 0.01mm.
Standard gauge block: A physical reference for displacement calibration at full scale; grade 0 accuracy is adequate.
A high-precision digital vernier calliper is employed to verify the sensor's installation spacing and displacement stroke, with an accuracy of 0.01mm.
II. Tools for Signal Acquisition and Debugging
Data acquisition host computer: No additional purchase is necessary; it can be used directly with the existing industrial control computer in the workshop. Utilised to extract real-time output data from the sensor.
Digital multimeter: Utilised to confirm the 4-20 meter rangeThe sensor generates an analogue signal that verifies the transmission of the signal without any deviations.
Signal debugging software: A straightforward host computer program that has been customised to the sensor and is employed to establish the zero-point and full-scale parameters.
III. Auxiliary Operation Tools
The copper fine-tuning set screw is employed to fine-tune the displacement position of the heated runner plate, thereby preventing components from being damaged by impacts with hard metal. Heat-resistant mitts are required to be worn during hot calibration in order to prevent operators from being burnt by the high-temperature runner.
Insulating shielding tape is employed to prevent signal interruptions caused by loose wiring during calibration by temporarily fixing the wiring.
IV. High-precision calibration tools that are optional
Portable laser interferometer: Existing manufacturing equipment may be borrowed to facilitate more precise calibration. Used for the verification of full-range errors, with an accuracy of up to ±0.5μm.
Vibration isolation pad: Located beneath the sensor mounting base to prevent the stability of calibration data from being impacted by workshop vibrations.
This tool list is optimally suited for the on-site calibration requirements of your preferred domestically produced low-cost Hall effect displacement sensor, thereby eliminating the necessity for additional high procurement costs.
