Terminal checking the circuit and control dial protecting setting is normal or not.
定期检查电路及控制仪表的各种保护设置功能是否正常。
2
Electrostatic shielding is provided by surrounding the signal path with a conductor connected to a low impedance point in the circuit, preferably the lo input terminal of the measuring device.
Partial Pressure Connection: the varistor of the two fixed end of the bipolar power supply, respectively connected by a sliding side and either a fixed terminal connected to the circuit.