Integrated lubricant analyzer

• US 6,582,661 B1
• Filed: 06/30/2000
• Issued: 06/24/2003
• Est. Priority Date: 06/30/2000
• Status: Expired due to Term

• Current Assignee: Computational Systems Incorporated (Emerson Electric Company)
• Original Assignee: CSI Technology Incorporated (Emerson Electric Company)
• Inventors: Hayzen, Anthony J., Garvey, Raymond E. III, Pardue, Bradley D., Granger, Mark L.
• Primary Examiner(s): Warden, Jill
• Assistant Examiner(s): SINES, BRIAN J
• Application Number:
  US09/607,665
• Time in Patent Office: 1,089 Days
• Field of Search: 436/60, 738/632.1, 73/540.1, 73/530.1, 422/82.01, 422/50, 422/68.1
• US Class Current: 422/68.1
• CPC Class Codes: G01N 33/2888 Lubricating oil characteristics, e.g. deterioration lubricating properties G01N33/30

Abstract

An integrated lubricant analyzer apparatus. The apparatus includes a housing having a first fluid inlet port in flow communication with a chemical analysis device. A second fluid inlet port is included in the housing in flow communication with a particle analyzer. The housing also includes a third fluid inlet port in flow communication with an optical particle counting device. A syringe degassing port is attached to the housing for inverting and degassing a syringe containing a fluid sample for a particle count analysis before the fluid sample is injected into the third fluid inlet port. The apparatus includes a sample analysis sequencing procedure and a microprocessor for collection and manipulation of data from the chemical analysis device, the particle analyzer and the particle counting device. Features of the invention enable a trivector analysis of a fluid for maintaining machinery containing the fluid.

Claims

1. An integrated lubricant analyzer apparatus comprising:

a housing having a first fluid inlet port in flow communication with a chemical analysis device for chemical analysis of fluid communicated to the chemical analysis device via the first fluid inlet port, the analysis providing chemical data corresponding to chemical properties of the fluid communicated to the chemical analysis device,

a second fluid inlet port in the housing in flow communication with a particle analyzer for providing particle identification data corresponding to particle properties of fluid communicated to the particle analyzer via the second fluid inlet port, third fluid inlet port in the housing in flow communication with an optical particle counting device for providing particle count data corresponding to particle properties of fluid communicated to the particle counting device via the third inlet port,

a syringe degassing port attached to the housing for inverting and degassing a syringe containing a fluid sample for particle count analysis before the fluid sample is injected into the third fluid inlet port,

an automatic sample injection device for injecting a fluid sample through the third fluid inlet port, and

a microprocessor contained within the housing for collection and manipulation of data from the chemical analysis device, the particle analyzer and the particle counting device for providing an output to a user indicating corrective action required based on the sample data.

2. The lubricant analyzer of claim 1 further comprising a sample weighing device for input of lubricant sample weight to the computing device.

3. The lubricant analyzer of claim 1 further comprising a vacuum pump in flow communication with the syringe degassing port for degassing a lubricant sample.

4. The lubricant analyzer of claim 1 further comprising a panel on the housing containing an analysis sequencing procedure wherein the analysis sequencing procedure is indicated by a graphic and light display on the panel of the housing.

5. The lubricant analyzer of claim 1 wherein the chemical analysis device comprises a dielectric sensor and a sensor selected from a viscometer, a colorimeter and a combination of viscometer and calorimeter.

6. The lubricant analyzer of claim 1 wherein the third fluid inlet port is disposed on the housing so as to inject a lubricant sample for analysis vertically downward through the third fluid inlet port.

7. The lubricant analyzer of claim 1 wherein the automatic sample injection device comprises a linear motion-controlled arm for attachment to a syringe plunger.

8. The lubricant analyzer of claim 1 wherein the particle analyzer comprises a dual coil electromagnetic sensor.

9. The lubricant analyzer of claim 8 wherein the second fluid inlet port comprises a tapered cylindrical inlet port.

10. The lubricant analyzer of claim 8 further comprising a vibrator attached to the second fluid inlet port.

11. The lubricant analyzer of claim 1 further comprising a filter patch device attached to the housing in flow communication with the particle analyzer for visual determination of particle size distribution.

12. The lubricant analyzer of claim 1 further comprising a permanent magnet wand and a wand holder attached to the housing for metallic particle analysis.

13. A method for analyzing a lubricant sample for corrosive and abrasive components which comprises,

providing a lubricant analysis device containing a housing having a first fluid inlet port in flow communication with a chemical analysis device for providing chemical analysis data of a lubricant sample, a second fluid inlet port in the housing in flow communication with a particle analyzer for providing particle identification data, a third fluid inlet port in the housing in flow communication with an optical particle counting device for providing particle count data, a syringe degassing port attached to the housing for inverting and degassing a syringe containing a lubricant sample for particle count analysis before injecting the lubricant sample into the third fluid inlet port, an automatic sample injection device for injecting a lubricant sample through the third fluid inlet port, and a microprocessor contained within the housing for collection and manipulation of data from the chemical analysis device, the particle analyzer and the particle counting device;

collecting a lubricant sample to be analyzed;

injecting a first portion of the sample in the first fluid inlet port;

depositing a second portion of the sample in the second fluid inlet port;

degassing a third portion of the sample and injecting the sample into the third fluid inlet port;

collecting and analyzing the chemical analysis data, particle identification data and particle count data; and

providing an output to a user indicating corrective action to be taken based on the data.

14. The method of claim 13 wherein the lubricant analysis device contains a sample weighing device for input of lubricant sample weight to the computing device further comprising weighing a lubricant sample to be analyzed.

15. The method of claim 13 wherein the lubricant analysis device includes a vacuum pump in flow communication with the syringe degassing port, further comprising degassing a syringe containing a lubricant sample, inverting the syringe and injecting the lubricant sample into the third fluid inlet port of the lubricant analysis device.

16. The method of claim 15 further comprising diluting the lubricant sample with a solvent prior to degassing the sample.

17. The method of claim 13 wherein the particle analyzer comprises a dual coil electromagnetic sensor, further comprising sequentially imposing first and second magnetic fields on the second sample portion.

18. The method of claim 13 wherein the particle analyzer comprises a permanent magnet wand and a wand holder attached to the housing, further comprising collecting magnetic metal particles on the wand in the second fluid inlet port and removing the wand from the second sample portion.

19. The method of claim 17 wherein the particle analyzer comprises a dual coil electromagnetic sensor, further comprising sequentially imposing first and second magnetic fields on the second sample portion after removing the wand from the second sample portion.

20. The method of claim 13 further comprising diluting the lubricant sample prior to depositing the second portion of the sample in the second fluid inlet port.

21. A lubricant analyzer apparatus comprising a fluid inlet port for a lubricant sample, a sample syringe containing a plunger for injecting the lubricant sample into the fluid inlet port and a syringe degassing device for removing entrained and dissolved gases from the lubricant sample prior to injecting the sample into the inlet port, the degassing device containing a syringe adapter for connecting the syringe in an inverted orientation thereto for degassing a fluid sample in the syringe, a linear motion-controlled arm for attachment to the syringe plunger for injecting the fluid sample into the fluid inlet port at a predetermined rate and a particle counting device in flow communication with the fluid inlet port for providing particle count data respective of particle contamination of the lubricant sample.

22. The lubricant analyzer apparatus of claim 21 further comprising a vacuum pump in flow communication with the degassing device.

23. The lubricant analyzer apparatus of claim 21 wherein the particle counting device is selected from the group consisting of light obscuration devices, light scattering devices and pore blockage devices.

24. The lubricant analyzer apparatus of claim 23 wherein the light scattering device is a laser type photosensor.