O Função e Correto Uso de a Teste Caneta
O correto uso de digital display teste canetas deve master o seguinte conteúdo:
(1) Botão Descrição:
(A chave) DIRECT, diretamente medida o botão (longe de o LCD tela), que é, quando usando a caneta para diretamente contato o circuito, please pressiona este botão.
(B key) INDUCTANCE, indução medição botão (close to the LCD screen), that is, when using the pen to sense contact with the circuit, please press this button.
Nota: Não matéria como a caneta é impressa, please lembre-se que o um longe de o LCD tela é para direct medição; O um closest para o líquido cristal é o sensing chave.
(2) O digital display teste caneta é adequado para direct detection of AC and DC currents ranging from 12 to 250 V, as well as indirect detection of AC zero lines, phase lines, and breakpoints. It can also measure the on/off of of uncharged conductors.
(3) Direto detecção:
① O último número é o medido voltagem valor.
② Quando o alto quebra exibição valor é não 70 percent , o baixo quebra valor é exibido.
③ Quando medição direta corrente, toque o outro pole com sua mão.
(4) Indirect detection: Hold down the B key and place the pen tip close to the power cord. If the power cord is live, the high voltage symbol will be displayed on the display of the digital display pen.
(5) Ponto de interrupção detecção: Pressionar e segurar o B chave, e quando mover longitudinalmente along o fio, o ponto de interrupção está localizado onde lá está não exibição em a exibição janela.
Alternativa uso métodos para medição elétrica canetas
(1) It can be used for low-voltage nuclear phase measurement to determine whether any wires in the circuit are in phase or out of phase. The specific method is to stand on an object that is insulated from the ground, hold a measuring pen with both hands, and then test on the two wires to be tested. If the two measuring pens emit very bright light, the two wires are out of phase; On the contrary, it is in phase, which is judged based on the principle that the voltage difference between the two electrodes of the neon bubble in the measuring pen is directly proportional to its luminous intensity.
(2) It can be used to distinguish between alternating current and direct current. When using a test pen for testing, if both poles in the neon bubble of the test pen emit light, it is an alternating current; If only one of the two poles emits light, it is direct current.
(3) It can determine the positive and negative terminals of direct current. Connect the test pen to a DC circuit for testing, and the electrode with the neon bubble shining is the negative electrode, while the electrode without the neon bubble shining is the positive electrode.
(4) It can be used to determine se o DC está aterrado. In a DC system with insulation to ground, standing on the ground can be used to contact the positive or negative poles of the DC system with a measuring pen. If the neon bubble of the measuring pen is not lit, there is no grounding phenomenon. If the neon bubble lights up, it indicas grounding. If it lights up at the tip of the pen, it indica positive grounding. If it shines on the finger end, it is negative grounding. No entanto, it must be pointed out that in DC systems with grounding monitoring relays, this method cannot be used to determine se the DC system is grounded
