CLAMP METER

The present application discloses a clamp meter to be used for detecting resistance of a ground loop on which the detection is to be performed. The clamp meter includes: a source transformer unit, wherein the source transformer unit is configured to receive an alternating input voltage signal and is capable of being electrically coupled to the ground loopon which the detection is to be performed; an induction transformer unit, wherein the induction transformer unit is capable of being electrically coupled to the ground loop on which the detection is to be performed and the induction transformer unit being configured to be capable of generating an induced current signal as a response to the input voltage signal; a reference resistance loop, wherein the reference resistance loop is electrically coupled to the source transformer unit and the induction transformer unit; and a processing controller, wherein the processing controller receives the induced current signal and the processing controller is configured to be capable of determining the resistance of the ground loop on which the detection is to be performed based on the induced current signal.