Sealed control device with magnetically adjustable control parameter

Abstract

A switch including a sealed housing; a magnetic sensor; and a control element configured to modify a control parameter for the switch in response to a signal from the sensor. In some aspects, the magnetic sensor is arranged to produce the signal in response to a magnetic field generated outside of the housing. In some aspects, the switch is a vibration switch, or is selected from the group consisting of a flow switch, a level switch, a temperature switch, a pressure switch, a proximity switch, and a velocity switch. In some aspects, the switch includes a two-wire configuration and first and second output pins arranged to provide an output signal for the switch and to receive a signal for programming the switch. In some aspects, the switch includes a two-wire configuration and a current-control element arranged to reduce current output for the switch.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram of a present invention vibration switch;

FIG. 2 is a functional block diagram of a present invention vibration switch;

FIG. 3 is a block diagram of a present invention vibration switch application;

FIGS. 4A through 4C are block diagrams of other examples of present invention vibration switch applications;

FIG. 5 is a current versus time graph illustrating drop out with respect to a present invention vibration switch;

FIG. 6 is a block diagram illustrating a parallel application of present invention vibration switches;

FIG. 7 is a block diagram illustrating a present invention magnetically adjustable two-wire control device;

FIG. 8 is a block diagram illustrating a present invention sealed and magnetically adjustable two-wire control device; and,

FIG. 9 is a block diagram illustrating a present invention two-wire switch with current limiting.

Claims

1. A switch, comprising: a sealed housing; and,a two-wire configuration.

2. The switch of claim 1 further comprising first and second output pins arranged to provide an output signal for said switch and to receive a signal for programming said switch.

3. The switch of claim 1 wherein said switch further comprises a vibration switch.

4. The switch of claim 1 wherein said switch is selected from the group consisting of a flow switch, a level switch, a temperature switch, a pressure switch, a proximity switch, and a velocity switch.

5. The switch of claim 1 further comprising a magnetic sensor and a control element configured to modify a control parameter in response to a signal from said sensor.

6. The switch of claim 1 further comprising a current-control element arranged to reduce current output for said switch.

7. A switch, comprising: a sealed housing;a magnetic sensor; and,a control element configured to modify a control parameter for said switch in response to a signal from said sensor.

8. The switch of claim 7 wherein said switch further comprises a vibration switch.

9. The switch of claim 7 wherein said switch is selected from the group consisting of a flow switch, a level switch, a temperature switch, a pressure switch, a proximity switch, and a velocity switch.

10. The switch of claim 7 further comprising a two-wire configuration and first and second output pins arranged to provide an output signal for said switch and to receive a signal for programming said switch.

11. The switch of claim 7 further comprising a two-wire configuration and a current-control element arranged to reduce current output for said switch.

12. A two-wire control device, comprising: a magnetic sensor; and,a control element configured to modify a control parameter in response to a signal from said sensor.

13. The device of claim 12 wherein said two-wire control device further comprises a switch.

14. The device of claim 13 wherein said switch further comprises a vibration switch.

15. The device of claim 13 wherein said switch is selected from the group consisting of a flow switch, a level switch, a temperature switch, a pressure switch, a proximity switch, and a velocity switch.

16. The device of claim 13 wherein said switch further comprises a sealed housing.

17. The device of claim 13 further comprising first and second output pins arranged to provide an output signal for said switch and to receive a signal for programming said switch.

18. The device of claim 13 further comprising a current-control element arranged to reduce current output for said device.

19. A control device, comprising: a sealed housing;a magnetic sensor; and,a control element configured to modify a control parameter in response to a signal from said sensor.

20. The control device of claim 19 further comprising a two-wire configuration.

21. The control device of claim 19 further comprising a switch.

22. The control device of claim 21 wherein said switch is selected from the group consisting of a vibration switch, a flow switch, a level switch, a temperature switch, a pressure switch, a proximity switch, and a velocity switch.

23. The control device of claim 19 further comprises a switch with a two-wire configuration and first and second output pins arranged to provide an output signal for said device and to receive a signal for programming said device.

24. The device of claim 9 further comprising a switch with a two-wire configuration and a current-control element arranged to reduce current output for said device.

25. A two-wire switch, comprising: a housing; and,a current-control element arranged to reduce current output for said switch.

26. The switch of claim 25 further comprising a sealed housing.

27. The switch of claim 25 further comprising a switch selected from the group consisting of a vibration switch, a flow switch, a level switch, a temperature switch, a pressure switch, a proximity switch, and a velocity switch.

28. The switch of claim 25 further comprising first and second output pins arranged to provide an output signal for said device and to receive a signal for programming said device.

29. The switch of claim 25 further comprising a magnetic sensor and a control element configured to modify a control parameter in response to a signal from said sensor.