#Air viscosity serial
Serial LIMS data can then be transmitted to the laboratory's central monitoring system.
#Air viscosity code
Optionally, a bar code reader may be added for sample identification, monitoring and tracking. The fluid is then purged and the system is thoroughly cleaned. They are then heated to the required temperature and measured. Samples are automatically loaded using an auto-sampler.The viscometer is calibrated using viscosity oil standards calibrated in accordance with ASTM D445.The complete instrument is controlled by a PC.
#Air viscosity series
Additionally, pressurized air, solvent and vacuum systems are controlled by a series of electro-mechanical valves. A precision-regulated positive pressure is used for driving the sample through the capillary.
![air viscosity air viscosity](https://d2vlcm61l7u1fs.cloudfront.net/media%2F01f%2F01f66efc-8787-4ae5-bf27-28fd546ca6d0%2Fphp5cQD6N.png)
In used oil analysis it is not possible to make assumptions about the fluid density over its service life. An assumption must be made about the density of the fluid if accurate measurements are required.
![air viscosity air viscosity](https://www.engineeringtoolbox.com/docs/documents/412/viscosity_newton.png)
However, this can potentially introduce an error into the calculation of viscosity. Contaminants commonly found in used oil can alter the density of the sample and, as such, might have an adverse effect on the trended viscosity result.įrom fundamental physics theory, Poiseuille's equation states that the viscosity of a fluid may be determined from the flow rate through a given capillary, provided that a constant force is applied to the fluid.įor convenience, gravity is usually used as the driving force in capillary viscometers. Dynamic viscosity is measured in order to overcome the possible problems associated with kinematic viscosity from used oil samples. The most important feature of the instrument is that it measures dynamic (absolute) viscosity (reported in centiPoise) directly, and if required, density can also be measured, simultaneously, in order to present the results in kinematic viscosity units (e.g., centiStokes). In addition the AV-1 can be used to measure fuel oils and new oils. Like its predecessor the RHEOTEK™ AV-1 Automatic Viscometer is designed specifically for the viscosity measurement of used oils. Poulten Selfe & Lee Ltd has recently launched a new viscometer, the RHEOTEK™ AV-1 Automatic Viscometer, which supersedes the VMU 300. He is currently drafting a code of practice for the determination of the viscosity of used crankcase lubricants from diesel engines.
![air viscosity air viscosity](https://image1.slideserve.com/2375491/bernoulli-s-principle2-l.jpg)
Stephen Gosling, director of the family owned business, actively participates in contributing to international rheology panels including IP and ASTM. The company was incorporated in 1931 and manufactures an established range of glass capillary viscometers, viscosity oil standards and automatic laboratory viscometers. Poulten Selfe and Lee Ltd is a UK company specializing in the viscosity measurement of new and used oils.