Clamp ammeter is mainly used to measure current in a wire. It has a transformer on measuring head. When a wire passes through a transformer, if there is current in telecommunications, it affects transformer. current value It will be returned to current clamp, which is principle of clamp ammeter.
The multifunction current ammeter also has test leads and other voltage and resistance measurement devices, and can also be used as a multimeter, but measurement range and accuracy are different, gears are relatively small, and head of current ammeter has a transformer, so it is more troublesome to carry.
A multimeter is one of power tools commonly used by electricians and electrical engineers. The multimeter has a variety of gears, including a voltage measurement gear, a resistance gear, a current gear, a diode gear, and a buzzer gear. The voltage we usually use is one. Electric blocking and buzzing gears, other gears we use only in special cases, like current gear, because when measuring current, it is relatively dangerous to change position of test leads and connect them in series in a circuit.
The multimeter has many measuring mechanisms. In addition to AC/DC and AC/DC current sensors, it also has diode and transistor sensors, capacitor sensors, frequency and temperature measurement, etc., with more complete functions, etc. accurate measurement. . It has a wide range of applications such as measuring fragile products such as printed circuit boards and electronic components.
Because functions of two are different, in actual maintenance of electrical work, they are mainly used together, and one is indispensable.