Stud sensor with dual sensitivity

Details Stud sensor with dual sensitivity Stud sensor with dual sensitivity

1996-07-22

2000-02-08

Snow, Walter E.

Electricity: measuring and testing

Conductor identification or location

Inaccessible

324671, G01R 2726

Patent

active

060231599

ABSTRACT:
A dual sensitivity stud sensor senses studs through both thick and thin surfaces. Studs are sensed by detecting a change in the capacitive loading of plates as they are moved along a surface and into proximity with a stud. The sensor informs the operator when the sensor has (incorrectly) been calibrated over a stud. The sensor also informs the operator if the sensor is placed against a surface either too thick or too thin for stud detection. Through use of a digital register, the sensor remains calibrated indefinitely while the sensor is powered on.

REFERENCES:
patent: 3662258 (1972-05-01), Murphy et al.
patent: 4130796 (1978-12-01), Shum
patent: 4639666 (1987-01-01), Strosser et al.
patent: 4868910 (1989-09-01), Maulding
patent: 5352974 (1994-10-01), Heger

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