Sample Cell for Hand-Held Impedance Spectroscopy Device

• US 20090115434A1
• Filed: 10/31/2008
• Published: 05/07/2009
• Est. Priority Date: 11/02/2007
• Status: Abandoned Application

• Current Assignee: Paradigm Sensors LLC
• Original Assignee: Paradigm Sensors LLC
• Inventors: Bohacheck, Michael M., Seitz, Martin A., Hirthe, Richard W., Adikes, Robert P., Koehler, Charles J. III, Tomlinson, Douglas F.
• Application Number:
  US12/263,064
• Publication Number:
  US 20090115434A1
• Time in Patent Office: Days
• US Class Current: 324/693
• CPC Class Codes: G01N 27/026 Dielectric impedance spectroscopy electrochemical impedance spectroscopy for measuring corrosion G01N17/02
• CPC Class Codes: G01N 33/2829 mixtures of fuels, e.g. determining the RON-number

Abstract

Disclosed herein is a sample cell for use in conjunction with an impedance spectroscopy analysis device having two electrodes extending therefrom. The sample cell is attachable to and detachable from the analysis device and includes a housing having an input port for receiving a fluid sample to be tested. The sample cell also includes two spaced apart parallel plates within the housing and in contact with the fluid sample, wherein when the sample cell is attached to the analysis device, each of the two electrodes contacts a respective one of the plates such that an excitation signal can be provided from the analysis device via the electrodes and the plates to excite the fluid sample, and a response signal indicative of the fluid sample can be communicated via the plates and the electrodes to the analysis device.

Claims

1. A sample cell for use in conjunction with an impedance spectroscopy analysis device having two electrodes extending therefrom, the sample cell attachable to and detachable from the analysis device, the sample cell comprising,

a housing having an input port for receiving a fluid sample to be tested,

two spaced apart parallel plates within the housing and in contact with a fluid sample,

wherein when the sample cell is attached to the analysis device, each of the two electrodes contacts a respective one of the plates such that an excitation signal can be provided from the analysis device via the electrodes and the plates to excite the fluid sample, and a response signal indicative of the fluid sample can be communicated via the plates and the electrodes to the analysis device.

2. The sample cell of claim 1, further including a gasket between the two plates.

3. The sample cell of claim 1, wherein the housing includes two cutouts such that each of the electrodes contacts a respective one of the plates though a respective cutout.

4. The sample cell of claim 1, further including an output port formed in the housing for allowing air to escape when the sample cell is being filled.

5. The sample cell of claim 1, further including a circuit for storing at least one of a specific identifier and a calibration parameter of the sample cell.

6. The sample cell of claim 5, further including a temperature sensor for providing a temperature signal indicative of the temperature of the sample fluid to the analysis device.

7. The sample cell of claim 6, wherein the temperature sensor is a thermistor.

8. The sample cell of claim 1, wherein upon plugging the sample cell into the analysis device, a main processor of the analysis device determines whether the sample cell has previously been used and facilitates data collection only if the sample cell has not been previously used.

9. A sample cell for use in conjunction with an impedance spectroscopy analysis device having two electrodes extending therefrom, the sample cell attachable to and detachable from the analysis device, the sample cell comprising,

a housing having an input port for receiving a fluid sample to be tested,

two spaced apart parallel plates within the housing forming with the housing a reservoir for the fluid sample,

a circuit including a memory to store a predetermined identifier specific to the sample cell,

wherein when the sample cell is attached to the analysis device, the circuit is in electrical communication with the analysis device and the predetermined identifier is communicated to the analysis device, and each of the two electrodes contacts a respective one of the plates such that excitation signals from the analysis device can be applied via the electrodes and the plates to the fluid sample and response signals indicative of the fluid sample can be received by the analysis device via the electrodes and the plates to measure and determine a property of the fluid sample.

10. The sample cell of claim 9, wherein when the sample cell is attached to the analysis device, the analysis device determines whether the sample cell has previously been used and facilitates data collection only if the sample cell has not been previously used.

11. The sample cell of claim 9, further including a gasket between the two plates.

12. The sample cell of claim 9, wherein the housing includes two cutouts such that each of the electrodes contacts a respective one of the plates though a respective cutout.

13. The sample cell of claim 9, further including an output port formed in the housing and in communication with the reservoir for allowing air to escape when the sample cell is filled.

14. The sample cell of claim 9, wherein the circuit also stores one or more calibration parameters of the sample cell.

15. The sample cell of claim 9, further including a temperature sensor for measuring a temperature of the fluid sample, and providing a temperature signal indicative of the temperature to the analysis device.

16. The sample cell of claim 15, wherein the temperature sensor is a thermistor.

17. The sample cell of claim 9, wherein the circuit includes a memory device in communication with a microprocessor.

18. A sample cell for use in conjunction with an impedance spectroscopy analysis device having two electrodes extending therefrom, the sample cell attachable to the analysis device, the sample cell comprising,

a housing including a first housing portion having an input port for receiving a fluid sample to be tested and a second housing portion, wherein each housing portion includes a cutout,

a circuit for storing one or more parameters,

two spaced apart parallel plates within the housing forming with the housing a reservoir for the fluid sample, and

wherein when the sample cell is attached to the analysis device, each of the two electrodes contacts a respective one of the plates through a respective cutout and the circuit is in electrical communication with the analysis device.

19. The sample cell of claim 18, further wherein when the sample cell is attached to the analysis device, the analysis device determines whether the sample cell has previously been used and facilitates data collection only if the sample cell has not been previously used.