CLAMP METER WITH MULTIPOINT MEASUREMENT

• US 20130147464A1
• Filed: 12/07/2011
• Published: 06/13/2013
• Est. Priority Date: 12/07/2011
• Status: Active Grant

• Current Assignee: BRYMEN Technology Corporation
• Original Assignee: BRYMEN Technology Corporation
• Inventors: TAN, Po-Chao
• Granted Patent: US 8,754,636 B2
• Time in Patent Office: Days
• US Class Current: 324/126
• CPC Class Codes: G01R 1/22 Tong testers acting as secondary windings of current transformers
• CPC Class Codes: G01R 15/186 using current transformers with a core consisting of two or more parts, e.g. clamp-on type G01R15/142 - G01R15/16 take precedence; tong testers G01R1/22

Abstract

A clamp meter with multipoint measurement includes a current-measuring unit, an analog-to-digital converting unit, and a measuring-position judgment unit. The current-measuring unit includes a plurality of current-measuring positions calibrated according to the measuring-position judgment unit. The current-measuring unit measures the current of the current-measuring position judged by the measuring-position judgment unit.

Claims

1. A clamp meter with multipoint measurement including:

a current-measuring unit,

wherein the current-measuring unit includes a plurality of calibrated current-measuring positions.

2. The clamp meter with multipoint measurement in claim 1, further including a measuring-position judgment unit electrically connected to the current-measuring unit, wherein the current-measuring unit includes a plurality of current-measuring positions calibrated according to the measuring-position judgment unit, and the current-measuring unit measures the current of the current-measuring position judged by the measuring-position judgment unit.

3. The clamp meter with multipoint measurement in claim 2, wherein the measuring-position judgment unit includes a measuring-position setting circuit electrically connected to the current-measuring unit, wherein the current-measuring unit includes a plurality of current-measuring positions calibrated according to the measuring-position setting circuit, and the current-measuring unit measures the current of the current-measuring position set by the measuring-position setting circuit.

4. The clamp meter with multipoint measurement in claim 2, wherein the measuring-position judgment unit includes a measuring-position detection circuit electrically connected to the current-measuring unit, wherein the current-measuring unit includes a plurality of current-measuring positions calibrated according to the measuring-position detection circuit, and the current-measuring unit measures the current of the current-measuring position detected by the measuring-position detection circuit.

5. The clamp meter with multipoint measurement in claim 4, wherein the measuring-position detection circuit includes a plurality of current sensors electrically connected to the current-measuring unit.

6. The clamp meter with multipoint measurement in claim 3, further including:

an analog-to-digital converting unit electrically connected to the current-measuring unit; and

a display unit electrically connected to the analog-to-digital converting unit.

7. The clamp meter with multipoint measurement in claim 6, wherein the measuring-position setting circuit is a switch circuit, a press-button circuit, or a knob circuit to set the current-measuring position for the current-measuring unit, and the analog-to-digital converting unit is a fast high resolution analog-digital converter, and the display unit is a display.

8. The clamp meter with multipoint measurement in claim 7, further including:

a measurement body, covering the analog-to-digital converting unit; and

a hook part arranged on one side of the measurement body.

9. The clamp meter with multipoint measurement in claim 8, wherein the hook part includes a top valley arranged at the top of the hook part.

10. The clamp meter with multipoint measurement in claim 8, wherein the hook part includes a bottom valley arranged at the bottom of the hook part.