Rotary Disc Electrode Atomic Emission Spectrometer (RDE-AES)
Rotary Disc Electrode Atomic Emission Spectrometer (RDE-AES) TT-6595
Rotary Disc Electrode Atomic Emission Spectrometer (RDE-AES) TT-6595 is capable of directly testing the metallic element contents in various liquid samples, including lubricating oil, hydraulic oil, and fuel oil.
Rotary Disc Electrode Atomic Emission Spectrometer (RDE-AES) TT-6595 completes the analysis of multiple elements within 2 minutes with a single injection, without the need for sample pretreatment, auxiliary gas, or cooling water. Due to its strong adaptability to different environments, this instrument can be operated on warships or in the field. It adheres to the ASTM D6595 Standard Test Method for Determination of Wear Metals and Contaminants in Used Lubricating Oils or Used Hydraulic Fluids by Rotating Disc Electrode Atomic Emission Spectrometry and ASTM D6728 Standard Test Method for Determination of Contaminants in Gas Turbine and Diesel Engine Fuel by Rotating Disc Electrode Atomic Emission Spectrometry.
This instrument finds wide applications in oil quality monitoring for large equipment such as aircraft, warships, high-speed railways, and engineering machinery. It is utilized for monitoring mechanical wear and conducting fault diagnosis analysis. Additionally, it is commonly used for the analysis of metallic elements in oil."
Technical principle
The Oil Analysis Spectrometer is Mainly Composed of Excitation System, Optical System and Readout System
1. The arc or spark generated by the discharge of the excitation system directly interacts with the oil sample under test, exciting the outer electrons of the elements to produce characteristic spectral lines. The graphite disk electrode rotates continuously, bringing the oil between the counter electrodes. A significant potential difference exists between the graphite disk electrode and the rod electrode. When this potential difference reaches the discharge state, a high-voltage discharge occurs at the gap between the counter electrodes, creating an arc or spark. This generates an instantaneous high temperature, causing the oil sample on the disk electrode to burn, vaporize, and plasma-ize. The high temperature in the discharge gap fully excites various elements in the oil sample, producing numerous stable emission spectra. The spectral signal is then flexibly introduced into the Roland circle spectroscopic system through the UV optical fiber.
2. The optical system utilizes the grating on the Roland circle to gather and disperse the characteristic spectral lines of the excited elements. The greater the focal length, the more grating lines are available, and the higher the resolution, the better the spectroscopic effect. The detector receives and photo-electrically converts all characteristic spectral lines.
3. The readout system periodically reads the charges on the detector and converts them into digital signals, including the intensity of the characteristic spectral lines of elements. As the intensity is proportional to the element concentration, the readout system uses the external standard method to analyze, process, and output the data, obtaining the content of the detected elements.
Monitoring Significance
Oil analysis spectrometers have a long-standing track record, earning recognition from military, industrial, and commercial oil laboratories as a reliable and effective oil monitoring technology. They facilitate both condition monitoring of key oil equipment and quality control of oil products.
1. Capable of simultaneously determining multiple elements present in oils, including wear metals, pollutants, and additives.
2. Equipped with a scanner to scan the sample's barcode, eliminating the need for manual input of sample information.
3. Integrated shaft design eliminates the need for alignment unless faults occur (no displacement).
4. Utilizes two optical fibers due to wavelength differences: the right one measures lithium, calcium, and sodium, while the left side measures the remaining elements.
5. Operators can create applications based on real demands without requiring authorization from the manufacturer.
6. Standard configuration simultaneously determines 24 elements, including Ag, Al, Ba, Ca, Cd, Cr, Cu, Fe, K, Li, Mg, Mn, Mo, Na, Ni, P, Pb, Sb, Si, Sn, Ti, V, Zn, and Bi. Detection channels can be flexibly increased without requiring hardware changes when adding analysis target elements.
7. Built-in working curve.
8. Requires no sample pretreatment, enabling direct injection. A single test takes approximately 40 seconds, with adjustable testing time, and results are obtained after a single measurement.
9. Low cost of use, with consumable materials limited to standard graphite disc electrodes, bar electrodes, and sample cups.
10. Utilizes spectrally pure graphite material as the disc electrode instead of ceramic.
11. Uses concentrated optical fiber to ensure instrument resolution.
12. Equipped with a closed isolation heat exchanger in the light chamber to effectively prevent dust, water mist, and oil mist intrusion.
13. Features an exhaust structure to prevent cross-contamination.
14. Eliminates the need for argon gas or cooling water.
15. Integrated fully closed frame structure design provides impact resistance and deformation resistance.
Software
The expert spectral analysis software offers not only ease of operation but also includes the following functions:
1. Detection with the press of a button for effortless operation.
2. Utilizes a built-in working curve, enabling normal functionality after simple calibration with standard reference oil.
3. Dynamic drift correction enhances the stability of the optical system.
4. Features export and automatic storage functions for convenient data management.
5. Automatic pixel calibration (spectral tracing) for precise analysis.
6. Working curve correction ensures accurate results.
7. Allows for reference line setting to customize analysis parameters.
8. Automatically selects spectral lines to streamline the analysis process.
|
No.
|
Element
|
Lubricant & Heavy Fuel Oil
|
Lubricant Extended Cal
|
Fuel
|
Low Detection Fuel
|
Coolant |
Water |
|
1 |
Aluminum (Al)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
0~50
|
0~10
|
|
2
|
Barium (Ba)
|
0~1000
|
0~6000
|
|
0~100
|
|
|
|
3 |
Boron (B)
|
0~1000
|
0~1000
|
|
0~100
|
|
|
|
4 |
Cadmium (Cd)
|
0~1000
|
0~1000
|
|
0~100
|
|
0~10
|
|
5 |
Calcium (Ca)
|
0~6000
|
0~20000
|
0~900
|
0~100
|
0~50
|
0~10
|
|
6
|
Chromium (Cr)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
|
0~10
|
|
7
|
Copper (Cu)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
0~50
|
0~10
|
|
8
|
Iron (Fe)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
0~50
|
0~10
|
|
9
|
Lead (Pb)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
0~50
|
0~10
|
|
10
|
Magnesium (Mg)
|
0~2000
|
0~6000
|
0~2700
|
0~100
|
0~50
|
0~10
|
|
11
|
Manganese (Mn)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
|
0~10
|
|
12 |
Molybdenum (Mo)
|
0~1000
|
0~1000
|
|
0~100
|
0~500
|
|
|
13
|
Nickel (Ni)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
|
0~10
|
|
14 |
Phosphorus (P)
|
0~2000
|
0~6000
|
|
0~100
|
0~2500
|
|
|
15
|
Silicon (Si)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
0~500
|
0~10
|
|
16 |
Silver (Ag)
|
0~1000
|
0~1000
|
|
0~100
|
|
|
|
17
|
Sodium (Na)
|
0~1000
|
0~6000
|
0~100
|
0~100
|
0~1000
|
0~10
|
|
18
|
Tin (Sn)
|
0~1000
|
0~1000
|
|
0~100
|
|
0~10
|
|
19 |
Titanium (Ti)
|
0~1000
|
0~1000
|
|
0~100
|
|
|
|
20
|
Vanadium (V)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
|
|
|
21
|
Zinc (Zn)
|
0~2000
|
0~6000
|
0~900
|
0~100
|
|
|
|
22
|
Potassium (K)
|
0~1000
|
0~1000
|
0~900
|
0~100
|
0~1000
|
0~10
|
|
23 |
Lithium (Li)
|
0~1000
|
0~1000
|
|
0~100
|
|
|
|
24
|
Antimony (Sb)
|
0~1000
|
0~1000
|
|
|
|
|
Technical parameters
Optical System
1. Optical system: Pashen-Runge, Roland circle optical structure, Roland focal length: 500mm. High-performance holographic diffraction grating, Grating notching 2700L/mm.
2. Optical resolution: 0.006nm.
3. Spectral range: 190-900nm.
4. Double chamber system:
- Short wave chamber wavelength: 190~470nm.
- Long wave chamber wavelength: 470~900nm.
5. Both Roland circle and the host machine are equipped with a constant temperature system to maintain constant temperature independently, 40±1°C; the constant temperature is adjustable, which is effectively suitable for too high or too low environment temperature condition.
Detector
1. Cluster optical fiber signal transmission dual-layer, multi-CCD detection spectrum system.
2. The linear array of multiple CCDs is arranged in a Roland circular shape, which realizes continuous and simultaneous detection of the whole band and facilitates later development of other elements.
3. High-performance CCD detector, each CCD with 3648 pixels.
4. Ultraviolet band spectral enhancement detection technology, enhances the ultraviolet band light intensity, and prolongs the life.
Excitation Light Source
1. Bidirectional high-performance excitation light source, 14000V ignition pulse, digital discharge parameter setting, digital pulse generator, digital offline pulse control.
2. Dual-phase zero-crossing signal detection technology, avoiding high-voltage spark electromagnetic compatibility interference, and improving voltage stability.
Excitation Chamber
1. Rod electrode holder for automatic adjustment of electrode pole distance device, ensure that the height of electrode spacing is consistent for all measurements.
2. The excitation room has a visual window, which can visualize the whole excitation process.
3. Complete safety monitoring and protection functions, including excitation chamber door safety lock, sample cup, disc electrode, rod electrode, spark gap sensing monitoring device (laser light source automatic positioning), with safety alarm and automatic flameout function, to ensure user safety.
4. Semi-permeable cutoff to prevent oil sputtering contamination and filter stray light.
5. Aluminum fire extinguishing device, to prevent volatile sample ablation from producing flames.
Computer System
1. Operating system: Instrument control and data management software based on Windows platform.
2. External connection of the control computer.
Power Supply and Environment Requirements
1. Power: 220V±10%, 50/60Hz, AC power, Built-in pressure stabilizing device, no special grounding device is required.
2. Power consumption: ≤1kW. Fusing current: 16A.
3. The range of operating temperature: -40~50℃.
4. The variation allowance of the maximum temperature: ±5℃/h.
5. Operating humidity: 0~90%, no condensation.
6. Working altitude: ≤7000m.
Size and Weight
1. Size: 740mm (length) X 540mm (width) X 360mm (height).
2. Weight: 69kg.
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