PQ INDEX METER

SMU Particle PQ Content Tester PQ100-KING

Product Features

 The Rotary Particle PQ Content Tester (PQ100 for short) uses an off-line particle quantification (commonly referred to as PQ) magnetometer to monitor wear trends in machinery. An oil sample is taken from the machine and a magnetic flux field is collected in the test cassette at a depth exceeding the sensing coil in the instrument, determining the quantitative change in the magnetic field due to the presence of any ferromagnetic material and giving a relative value (PQ index).PQ is a sensitive magnetometer and the PQ index is a quantitative number without units, which shows a good linear relationship with the content of ferrous debris in the sample and the size of the particles; during oil analysis, the PQ index is the basic discrimination parameter that identifies large ferrous particles (larger than 5 to 10 microns) that cannot be measured by other analytical techniques, without the need for complex sample preparation.

Test Method Overview

A sample of lubricating oil is taken from the machine in a volume higher than the detected magnetic field of the instrument's sensor coil. The equipment gives a PQ index by detecting the quantitative change in the magnetic field in the presence of ferromagnetic material, which is related to the concentration and spatial distribution of ferromagnetic material in the induction volume of the coil, and if the oil sample is not disturbed over a period of time, the test concentration is approximately the same over that period of time.However, if the oil sample undergoes an increase in PQ values, for example, from initially good test conditions to a sustained increase in PQ values, the PQ values may exhibit a time dependence due to the abrasive nature of the metal fragments, and information about the size (mass) of the metal fragments can be obtained from the rate of any time-dependent behavior recorded.The PQ100 is not designed to be used as an absolute measurement of the amount of debris, but rather to monitor trends, and it is important that the PQ index be changed by at least 10% relative to previous measurements. It is normal for empty sample bottles and clean oil to typically give a slightly positive PQ index, and as long as they give consistent readings, it will not affect the trend.

Cautions

• The instrument should be placed in a clean environment away from magnetic interference, and should be warmed up for half an hour after power on before testing, and the measuring turntable should be cleaned in time before and after the test;

• Each time the power is turned on, the measurement dial will be independently calibrated, and if the dial is shifted due to jamming during the test, the dial can be reset by selecting it in the "calibration" interface;

• The first test value after sampling should be tested immediately or evenly after shaking; generally the first test value after the actual ship is the initial value (generally the initial value should be less than 200, and the smaller it is, the more normal the wear), after each test value and the initial value or the previous test value for comparison, general working conditions or wear normal, the test value and the initial value or the previous test value will not change too much, otherwise it should cause enough attention;

• It is generally recommended to test once a week or three to five days, but in case of new fuel, it is recommended to test once a day and compare it with the data before the oil change until the data is stable and then perform routine testing;

• The test box can be reused, but it should be wiped clean after use, and it is recommended to recalibrate the instrument every 100 times the sample is tested.

Product specifications and composition

50. Instrument parameters

50. Experimental environment requirements
50. Equipment Composition

The PQ100 consists of a main unit, power adapter and standard sample kit.

50. Product usage instructions

• Connect the instrument's power adapter power cord to the power socket on the back of the main unit and connect the other end of the power adapter to a suitable, grounded mains power supply. (a) The adapter power indicator shows normal, then turn on the mainframe through the power adapter's switch, and the mainframe display will turn on and automatically enter the test software.

• When placing the sample to be tested, the sample to be tested must be placed in place and there should be no abnormalities in the sample placement, such as tilting or gaps at the bottom. Make sure that the sample placed in each test is essentially the same.

• The "Measure" button in the main operation interface is the instrument testing operation button, "Data Management" is the instrument history data, and "Transfer" is the data transfer."Settings" are some general settings, including the menus "Calibration", "Set Time", "Turntable Return" and "Options". "and "Options". The "Shutdown" menu is the shutdown operation of the instrument.

• The number of sample measurements is set to the number of times each sample is tested, with a maximum setting of 99. The added file is a saved test history file for continued testing. Create a new file to create a new test file name. After creating the file name, click "Continue" to start the test and each time you click Save, the test results will be saved in the history.

• The data management menu has four options including "View", "Rename", "Delete" and "Transfer". The last two "Z..." files are internal files and cannot be deleted or renamed. Test data can be transferred externally via USB.

• Calibration: Click "Calibration" option before measurement, and put the 0ppm sample into the measurement hole according to the screen instruction (remove the holder from the measurement hole and put the sample in), and then put the 750ppm sample in after the measurement. Calibration does not need to be done every time, but generally needs to be recalibrated when the environment changes or after a longer period of time (usually three months to six months). If the calibration fails once, you can perform multiple calibrations in succession until the calibration is successful.

• Set time is the time setting of the instrument. Return of the turntable is the return of the turntable to the starting position. If the turntable is offset, it can be returned to the starting position using the secondary function. Please note that all tests must be performed after confirming the correct position of the turntable.

• The test can usually be performed using the standard sample that is included. If the value is within the range of the standard sample, the instrument is working properly and does not require calibration.

• Sampling: Shake the sample well before sampling, pour the sample carefully into the sample cassette that accompanies the equipment, fill the sample cassette to more than 4/5 but do not fill it completely (otherwise the sample cover will easily leak out).

• Shutdown: Perform shutdown operation in the initial interface after using the instrument and organize the equipment after shutdown.