I. Instruments of Measurement Fundamentals
In order to verify the zero-point gap between the Hall effect probe and the heated runner plate, a 0-grade feeler gauge is employed, with an accuracy of 0.01mm.
A precise displacement reference value is provided by the 0-grade standard gauge block, which is employed for full-scale displacement calibration.
High-precision digital vernier calliper: Assists in the verification of the gauge block thickness, ensuring that the displacement reference is devoid of deviation.
II. Instruments for Signal Adjustment
Digital multimeter: Utilised to confirm that the sensor's 4~20mA analogue output signal is accurate, with the zero point corresponding to 4mA and the full-scale range to 20mA.
The industrial PC and the accompanying simple host computer software are utilised to set the zero-point and full-scale parameters, fine-tune the linear correction coefficient, and read and write the sensor's basic configuration.
III. Dedicated Auxiliary Tools That Are Available as Options
Universal Magnetic Hall Sensor Programmer: Specifically engineered for automotive-grade domestic Hall sensors with OTP programmable registers. It replaces conventional external circuit voltage divider fine-tuning by reading and writing all configuration items, such as internal gain, zero offset, and filtering parameters. This enhances the efficiency of mass production calibration, as a single set is priced at a mere few hundred yuan. It is compatible with the majority of domestic Hall sensor models.
IV. Supplementary Consumables
Copper Fine-tuning Set Screws: These screws are utilised to precisely adjust the probe coaxiality and fine-tune the sensor mounting position.
Insulating shielding tape is employed to secure wiring and prevent electromagnetic interference caused by unsecured signal cables.
This tool configuration is tailored to meet your requirements for the construction of a low-cost hot runner displacement monitoring system. The calibration operation can be completed independently on-site by ordinary maintenance engineers, and no additional costly procurement costs are necessary.
