Machinery Lubrication

Machinery Lubrication September-October 2019

Machinery Lubrication magazine published by Noria Corporation

Issue link:

Contents of this Issue


Page 46 of 70

42 | September - October 2019 | www . TEST YOUR KNOWLEDGE This month, Machiner y Lubrication continues it s " Test Your Knowledge" sec tion in which we focus on a group of questions from Noria's Prac tice Exam for Level I Machine Lubrication Technician and Machine Lubricant Analyst. The answers are located at the bottom of this page. The complete 126-question prac tice test with expanded answers is available at ANSWERS 1. A The test can be prepared easily by mixing the used oil sample with water at room temperature. The mixture should be blended for 2 minutes at high blending speed and then poured into a graduated cylinder. Demulsibility can be assessed by evalu- ating the oil zone, cuff zone and water zone after a certain period of time. 2. A FTIR is an eff ective tool to monitor multiple oil parameters such as oxidation, soot, nitration, glycol, etc. There are special instruments to measure wear metals, viscosity, acid number, particle counts and oil density. 3. E A minimess sampling valve is ideal because the amount of dead volume (stagnant oil) in this type of sample port is minimal. Therefore, fl ushing is easy and does not require draining large amounts of oil. This type of sample port is designed to prevent leakage and is normally clean because of the threaded dust cap. 1. Water separation from oil (demulsibility): A) Can be roughly determined with a kitchen blender. B) Cannot be determined in the fi eld. C) Can be determined using a patch test. D) Is not important enough to worry about with a fi eld test. E) Can be determined using a calcium hydride kit. 2. FTIR can provide reliable information on: A) Oxidation and soot B) Wear metals C) Viscosity and acid number D) Particle counts E) Oil density 3. The benefi t that is achieved with the use of a hard-piped sampling valve (minimess) is: A) Dead volume is minimized B) Flushing is easy to do C) Sampling is clean due to the threaded dust cap D) ere is low risk of leakage E) All of the above Stay Connected With Noria Follow us on Twitter Like us on Facebook Connect with us on LinkedIn /noria-corporation Continue learning with us on YouTube

Articles in this issue

Links on this page

Archives of this issue

view archives of Machinery Lubrication - Machinery Lubrication September-October 2019