CURRENT MEASURING DEVICE
First Claim
Patent Images
1. A current measuring device comprising:
- a base having a generally hollow interior portion;
a cover coupled to said base;
an arm coupled to said cover;
a clamp coupled to said arm, said clamp having a first semi-circular recess on one side of said arm and a lever portion on a side of said clamp opposite said first semi-circular recess;
a semi-circular mu-metal member coupled to said first semi-circular recess; and
,a Hall effect sensor coupled to said base adjacent said first semi-circular recess.
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Abstract
A current sensor is provided for non-invasively measuring electrical current in an electrical conductor. The current sensor includes a housing having a Hall effect sensor and circuitry for transmitting a signal indicative of the current flowing through the electrical conductor. The current sensor further includes a clamp that allows an operator to easily and repeatedly install and remove the current sensor from electrical conductors. The current sensor may also include a mu-metal device for shielding the Hall effect sensor for stray magnetic fields generated by adjacent electrical conductors.
24 Citations
20 Claims
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1. A current measuring device comprising:
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a base having a generally hollow interior portion; a cover coupled to said base; an arm coupled to said cover; a clamp coupled to said arm, said clamp having a first semi-circular recess on one side of said arm and a lever portion on a side of said clamp opposite said first semi-circular recess; a semi-circular mu-metal member coupled to said first semi-circular recess; and
,a Hall effect sensor coupled to said base adjacent said first semi-circular recess. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A removable current sensor comprising:
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a housing; a clamp coupled to said housing, said clamp having a locking portion on one end and a lever arm on an opposite end, said clamp being rotatable between a first position wherein said locking portion is in contact with said housing, and a second position; a Hall effect sensor having a first end mounted to said housing, said Hall effect sensor further having a second end positioned adjacent said clamp locking portion; and
,a biasing member coupled between said housing and said lever arm, said biasing member being arranged to rotate said clamp locking portion towards said Hall effect sensor. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A current sensor for measuring electrical current flow through an electrical conductor, said current sensor comprising:
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a clamp member, said clamp member having a lever arm on one end and a first recess on an opposite end, said first recess being sized to receive said electrical conductor; a pivot arm rotatably coupled to said clamp member between said lever arm and said recess; a housing coupled to said pivot arm, said housing having a hollow interior portion and an opening adjacent said first recess; a Hall effect sensor positioned within said opening and mounted on one end to said housing within said hollow interior; and
,a mu-metal insert coupled to said first recess, said mu-metal insert being sized to receive said electrical conductor. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification