DT100DL Measurement of the Merit of Dispersancy of In-Service Engine Oils with Blotter Spot Method
The requirement for on-line machinery and oil condition monitoring is becoming evermore apparent as maintenance costs increase and production capacity and equipment performance are maximized.
One of the primary functions of a lubricant is to preserve the cleanliness of a combustion engine’s mechanical parts. The cleanliness of the mechanical parts is facilitated by “detergency” and “dispersancy” (DD) additives in the engine oil.
The dispersancy is the property that allows the oil to suspend and carry away “pollutants” of diverse sources such as soot from combustion, metallic particles from wear, corrosion of mechanical parts, and insoluble products resulting from the ageing of the oil, etc. Dispersant additives in oil prevent agglomeration and sludge formation by dispersing contaminants. With proper formulated oil, the soot will remain homogeneously suspended up to high concentration levels. When soot load reaches a critical limit for current condition of the oil, a sudden loss of dispersancy leads to rapid agglomeration and deposition of soot onto machine surfaces. Contaminants like water and/or glycol can quickly knock out dispersancy performance without an increase in soot load. Diesel engine condition monitoring requires increased focus upon measuring both soot concentration and dispersancy performance. Unlike measuring soot concentration where numerous options exist, measuring soot content and dispersancy performance is a real challenge to the oil analyst.
The DT100DL operates according to ASTM D7899. The instrument simultaneously measures soot and dispersancy. The results reported are combining soot content and dispersancy performance.
Applications:
Benefits:
Unique and simple instrument to measure dispersancy
Complete OCM program with unique information on oil dispersancy
Dispersancy measurement and soot content quantification
Tool to make justified pro-active actions and maintenance planning decisions
Removes all arbitrary aspects of manual method
Evaluation of oil formulation
Performance of DD additives
Ideal for trend analysis in OCM programs and diagnosis on diesel engines
Lubricants performance at engine operation conditions
Lubricants compatibility evaluation
Technical Points | Description |
Dispersancy (MD) | 100 (good) to 0 (very poor) |
Contamination index(IC) | 0.1 to 5% |
Combined Performance Rating(DP) | 0 (good) to 200 (very poor) |
Duration of spot analysis | Few seconds per spot |
Max spot diameter | Up to 45 mm |
Positioning of the spot | Visual centering with guide |
Imaging system | color CCD camera |
Light source | Dual lighting – backlight and front light LED panels |
Calibration of imaging system | Special calibration tool (delivered with the unit) |
Results storage | Unlimited, depends on external USB storage device capacity |
Spot image storage | Color image in front light and B&W image in backlight |
Data output | 2xUSB, LAN connectivity by Ethernet RJ45, optional printer |
Dimensions (mm) | 305 x 487 x 390 (W x D x H) |
Weight | 20kg |
Electrical | 115 to 230V – 2A – 50/60Hz |