3.10.4 Experimental procedures
1)Instrument connection and preheating
(1)Connect the hall effect tester ZKY-H/L and hall effect experiment unit ZKY-LS properly based on the words and symbols on the instrument panel.
(2)Connect the tester with 220 V AC power supply,and then turn on the power of the tester and preheat it for at least 15 minutes.
(3)Turn zero to the Hall effect tester.Turn Hall Tester“IS adjusting knob”and“IM adjusting knob”to zero,and then turn Hall Voltage“VH adjusting knob”to zero.
2)Plot VH-IS curve
(1)During the process of measuring,keep the exiting current IM unchanged(IM=0.8 A),change the values of the operating current IS.Use symmetric method to measure the corresponding V1,V2,V3,and V4,and then record them in Table 3.10.1.(https://www.daowen.com)
(2)Use Equation(3.10.9)to calculate the corresponding values of VH.
3)Plot VH-x curve of the solenoid
(1)Set IS=2.00 mA,IM=0.5 A,which remains the same in the measuring process.Adjust the position of the Hall element x,and use symmetric method to measure the corresponding V1,V2,V3,and V4 at each position,and then record them in Table 3.10.2.
(2)Use formula(3.10.9)to calculate the corresponding values of VH.
(3)Plot VH-x curve of the solenoid.
