3.10.2 Experimental instruments
The instruments used in this experiment consist of the solenoid magnetic field experiment unit(ZKY-LS)and the solenoid magnetic field tester(ZKY-H/L).
1)Solenoid magnetic field experiment unit(ZKY-LS)
The experiment unit consists of a solenoid,a Hall element in a Hall cylinder,two on-off switches and two transfer switches,as shown in Figure 3.10.1.The hall element is located in the middle of the Hall cylinder.The hall cylinder can axially slide inside the solenoid with a range of more than 300 mm.The basic parameters of Hall elements are indicated on the nameplate,which can be used for data processing.Two on-off switches and two transfer switches control the solenoid current and the working current respectively,which can eliminate part of the experimental error.
2)Solenoid magnetic field tester(ZKY-H/L)
As shown in Figure 3.10.2,the panel diagram for solenoid magnetic field tester(ZKY-H/L)is divided into three parts:
①The output,adjustment and display of operating current IS.
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Figure 3.10.1 The panel diagram of solenoid magnetic field experiment unit(ZKY-LS)
②The input,adjustment and display of the Hall voltage VH.
③The output,adjustment,display of the exciting current IM.
The operating current output DC current ranging from 0 to 10 mA.The exciting current output DC current ranging from 0 to 1 000 mA.The measurement range of Hall voltage is±20.00 mV/±200.0 mV,which can be switched by the“L”or“H”button on the right side of the panel.All the current or voltage values are displayed with four digit tubes.
Figure 3.10.2 The panel diagram for solenoid magnetic field tester(ZKY-H/L)
