First, the use of DC ammeter
J0407 DC ammeter (DC ammeter) is suitable for ordinary middle schools and secondary schools. A DC current meter is used to measure the current in a DC circuit during an experiment or student test.
Second, the structure
The J0407 DC ammeter is mainly composed of a case and a meter. The case is equipped with three terminals. The three posts have three symbols: “-â€, “0.6†and “3â€.
The DC ammeter head structure is magnetoelectric, consisting of a permanent magnet yoke ring and a coil. A coil is installed in the magnetic field, the coil can rotate around the central axis, and a spring wire is welded to both ends of the coil shaft. One end of the DC current meter is equipped with a pointer, and a DC value scale panel and an adjustment arm are fixed on the bracket.
Third, technical performance
The DC ammeter is beautiful in appearance, reasonable in structure, economical and durable, easy to use, and has high sensitivity. The advantages of DC ammeter indication are clear, and are well received by teachers and students.
1. The DC ammeter indicates that the panel is at an angle of 45° to the horizontal.
2, DC ammeter working environment: temperature: 0 ° C ~ 40 ° C. Relative humidity: ≤ 85%.
3. DC ammeter measurement range: (-0.2~0~0.6A) (-1~0~1A).
4, DC ammeter measurement accuracy: 2.5.
5, DC ammeter external dimensions: 117 × 100 × 93 mm.
6. DC current meter damping time: no more than 4 seconds.
7. The DC current meter has a defense level of 3 for the external magnetic field.
8, DC current meter full scale head pressure drop: 75mV.
Fourth, use and maintenance
l. Before using the DC current meter, check whether the pointer is aligned with the zero position. If there is any deviation, turn the zero button with the screwdriver to adjust the pointer to zero.
2. The DC current meter should be used in parallel in the circuit. The column line marked with “-†is connected to the negative pole. Before the connection, estimate the circuit current to avoid overload and damage the meter.
3. Do not strike or violently shake. The DC ammeter is certified by the technology and has been sealed. It is not allowed to dismantle the meter.
4. Keep the instrument clean and free from corrosive gases and strong magnetic fields.
The symbols on the dashboard are as follows:
<When the meter is in use, the panel is at an angle of 45° to the horizontal.
Neodymium magnetic instrument
2.5 meter accuracy 2.5
A DC ammeter
J0407 DC ammeter model
Teaching equipment in the company is a detailed teaching instrument work plan, experimental teaching research organization, teaching research and experiment, while the company has compiled laboratory instruments, teaching equipment registration and other detailed information. In the next research direction, the primary school experimental teaching plan and the music teaching instrument plan have been put on the agenda.
Nantong Boxin Electronic Technology Co., Ltd. , https://www.ntbosen.com