Devices and systems for measuring the state of a valve, and related methods

1. A device for measuring a state of a valve, the device comprising:

a housing separate from the valve and configured to be affixed and supported by to a handle of the valve via one or more connectors;

a sensor supported on the housing; and

an indicator detectable by the sensor, wherein the indicator is configured to move along the housing relative to the sensor in response to movement of a valve stem of the valve during opening and closing of the valve,

wherein the sensor is configured to detect a position of the indicator to determine a state of the valve.

2. The device of claim 1 , further comprising a memory device electrically connected to the sensor, the memory device configured to store a first reference point corresponding to a first position of the indicator when the state of the valve is fully opened and a second reference point corresponding to a second position of the indicator when the state of the valve is fully closed.

3. The device of claim 2 , wherein the memory device is configured to store an initial position of the indicator corresponding to an initial state of the valve.

4. The device of claim 3 , further comprising an electronic display electrically connected to the memory device, wherein the electronic display is configured to show the initial state of the valve relative to the state of the valve being fully opened and fully closed.

5. The device of claim 4 , wherein the sensor is configured to at least substantially continuously detect the position of the indicator, and wherein the electronic display is configured to at least substantially continuously display the state of the valve relative to the state of the valve being fully opened and fully closed.

6. The device of claim 4 , wherein the electronic display comprises a number of independently activatable light-emitting diodes (LEDs).

7. The device of claim 6 , wherein each LED has a different color corresponding to a respective state of the valve.

8. The device of claim 1 , wherein the indicator comprises a magnet removably securable to the valve stem of the valve and the sensor comprises a magneto-resistive sensor secured to the housing and arranged parallel to a length of the valve stem.

9. The device of claim 1 , wherein the indicator comprises a laser oriented parallel to a longitudinal axis of the valve stem of a rising-stem valve and the sensor comprises an optical sensor secured to the housing and arranged orthogonal to a length of the valve stem, wherein the laser is configured to emit light directly onto the optical sensor.

10. The device of claim 1 , wherein the housing includes a top plate and a base, wherein the sensor extends between the top plate and the base in a direction of an axis of the valve stem of the valve, and the indicator is positioned in close proximity to the sensor between the top plate and the base.

11. The device of claim 1 , wherein the indicator is affixable to the valve stem utilizing fasteners, adhesives, or magnetic attraction.

12. The device of claim 1 , wherein the one or more connectors comprises a clip configured to connect to a spoke of a hand-wheel.

13. A system for measuring a state of a valve, the system comprising:

a valve comprising:

a valve body;

a handle operable to open and close the valve; and

a valve stem movable relative to the valve body during opening and closing of the valve; and

a sensor device comprising:

a housing separate from the valve, the valve affixed to and supported by and the handle of the valve via one or more connectors;

a sensor supported on one of the housing or the valve stem; and

an indicator detectable by the sensor and supported on the other of the housing or the valve stem, wherein the indicator is configured to move relative to the sensor in response to movement of the valve stem during opening and closing of the valve,

wherein the sensor is configured to detect a position of the indicator to determine a state of the valve.

14. The system of claim 13 , wherein the housing includes a top plate and a base, and wherein each of the sensor and the indicator is positioned opposite the valve body relative to the handle between the top plate and the base.

15. The system of claim 13 , wherein the sensor device is detachable from the valve.

16. The system of claim 13 , wherein the valve comprises a rising-stem valve, and wherein the one or more connectors comprises a clip removably connected to at least one spoke of a hand-wheel of the rising-stem valve.

17. The system of claim 16 , wherein the clip is adjustable.

18. The system of claim 16 , wherein the housing is formed unitarily with at least a portion of the clip.

19. The system of claim 13 , wherein the indicator comprises an acoustic sensor oriented parallel to a longitudinal axis of the valve stem of a rising-stem valve and the sensor comprises an acoustic transducer secured to the housing and arranged orthogonal to a length of the valve stem, wherein the acoustic transducer is configured to emit acoustic waves directly onto the acoustic sensor.

20. A method of forming a device housing for a valve, the method comprising:

determining at least some dimensions of a valve handle and a valve stem of a valve;

sequentially placing a material at targeted locations based on the at least some dimensions of the valve stem;

affixing the material in place to form a housing configured to receive the valve stem at least partially therein;

sequentially placing additional material at targeted locations based on the at least some dimensions of the valve handle; and

affixing the additional material in place to form one or more connectors secured to the housing and configured to removably connect the housing to the valve handle.