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Definitions Flashcards

(70 cards)

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1
Q

Mission

A

Leverage global talent and resources to provide cutting edge, accurate, timely, and cost-effective testing services to our businesses worldwide

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2
Q

Overview

A

designed to simulate the usage of air cleaners on both automotive and industrial applications

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3
Q

ABP

A

interface for technicians to perform testing on a given test station.

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4
Q

Active Scavenge

A

use of a scavenge airflow to assist in removing larger particles before they reach the primary element. Generally, entails the use of a scavenge can attached to a pump on one side and a vaccuator valve or precleaner on the other side

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5
Q

Air Floated Feeder

A

Dust feeder that fills tubes with a contaminate and pressurized air is introduced to the tube to disperse the test contaminate.

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6
Q

Air Hose

A

rubber or synthetic pressure hose used to supply air to a pneumatic device. commonly used to supply air to dust feeders and vibrator

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7
Q

Air Line

A

a plastic tube used to supply air to the deflocculator or vibrator

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8
Q

Boot

A

a section of rubber tubing used to connect sections of ductwork (transitions) to each other and to the unit under test. usually employed together with hose clamps

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9
Q

capacity

A

quantity of contaminant captured by the unit under test in producing specified terminal conditions

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10
Q

Cavitation

A

rapid formation and collapse of vapour pockets in a flowing liquid in regions of very low pressure, a frequent cause of structural damage to propellers, pumps. Also refers to such a pocket formed in flowing liquid

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11
Q

Concentration/Visibility

A

amount of dust fed to the air flow

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12
Q

Deflocculator

A

device that utilizes compressed air to inject test dust into the test system

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13
Q

Differential Pressure

A

measurement of the difference in static pressure between two areas of equal size

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14
Q

Dust Feeder

A

a computer-controlled system that runs an auger to feed test dust at a specified rate. Utilizes a calibrated scale to constantly measure the amount of dust being fed and adjust the feedrate accordingly.

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15
Q

Dust Feeder Auger

A

transport test dust from the feeder itself to the funnel. Uses a rotating helical screw blade called a “flighting” to act as a screw conveyor to remove the test dust from the feeder.

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16
Q

Dust Feeder Characterization

A

a programmable computer file that is used to control the rotational speed of the dust feeder auger and paddle. Ideally, provides a means to automatically reach a feedrate set-point with the least amount of error

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17
Q

Dust Jar/ Passive Scavenge

A

a container attached to a vaccuation valve or precleaner that is used to collect separated dust.

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18
Q

Dust Lot

A

a method of identification for test dust used in the Engine Air Lab

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19
Q

Efficiency

A

ability of the air cleaner or the unit under test to capture contaminant under specified test conditions

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20
Q

Element

A

removable filter portion of the unit under test

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21
Q

Engineering Test

A

this can be whatever the customer or requestor wants to know or do

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22
Q

Face Velocity

A

linear velocity of air striking the face of an element or unit under test

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23
Q

Filter Element

A

replaceable part of the air filter, consisting of the filter material and carrying frame.

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24
Q

Fixed Restriction Device (FRD)

A

a specifically-calibrated piezometer with an orifice plate that is used to calibrate test stations and track any changes in station characteristics through differential pressure (dP) measurements.

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25
Flow Range
the range of volumetric flow rates that the unit under test is to be tested under.
26
Flow Stability
a measure of the variation in flow rate around the set point. A test will be prevented from running if the flow stability is not within a certain range as specified by ISO 5011
27
Gen3 Dust Feeder
software responsible for controlling the dust feeder. Receives commands from settings entered into the ABP test program.
28
Grounding Wire
metal wire used to eliminate or reduce static electrical charge on the unit under test and dust feeder assembly
29
Hoffman Pumps
There are two 250 horse power pumps for high flow capabilities ranging from 4000-22000 cfm
30
Hose clamps
devices used to secure one testing component to another. Usually used to attach piezometers to air cleaner housings and other ductwork.
31
Hysteresis
phenomenon in which the value of a physical property lags behind changes in the effect causing it, as for instance when measuring a pressure reading while your airflow is increasing to a set value vs. when the airflow is decreasing to a set value. While the set value will be the same, the pressure reading will differ slightly.
32
Ideal Inlet
a shaped inlet device that smoothes the flow
33
Industrial Application
a term used to reference an air cleaner generally used for internal combustion engines in heavy-duty trucks, construction equipment and agricultural tractors
34
Initial Efficiency
the amount of dust a new filter lets past in the early stages of dust loading classified under the Automotive or Industrial specification
35
Automotive Initial Efficiency
20 grams of contaminant or the number of grams numerically equivalent to 6 times the air flow in CMM, whichever is greater. Accomplished by time base rather than mass.
36
Industrial Initial Efficiency
a quantity equal to 11 g/m^2 of the primary element media area to be fed at a constant rate over a 30-minute period
37
ISO 5011
Industry guidelines and normative specifications for automotive and industrial applications. A guide to follow for uniformity between tests conducted in different labs.
38
Leak Cart
Vacuum cart used to measure leak rates
39
LIMS
Online software used to manage, track, and assign test requests to individual test stations.
40
Manometer
Hand held pressure measuring instrument
41
Media
type of material used to compose the body of the filter element, this is what captures the contaminant
42
Operator Alarm
a notification displayed by the ABP program to alert the operator about an issue requiring attention
43
Particle Size Distribution
a list of values or a mathematical function that defines the relative amount, typically by mass, of particles present according to size
44
PD Blower
Positive Displacement gear pump for high static capabilities
45
Piezometer
a standard-diameter circular pipe used to determine pressure values through the use of a series of ports arranged circumferentially and spaced evenly around a vertical cross-section of the pipe.
46
Pressure Loss
differential pressure measurement with unequal inlet and outlet diameters is a static pressure measurement between two points and is used to isolate the specific effect of a component in the system.
47
Pressure Range
range of pressure values that a pressure point reading covers during a test
48
Pressure Regulator
device used to control the amount of pressure supplied to another device, such as a vibrator or deflocculator
49
Rated Air Flow
flow rate specified by the user or manufacturer
50
Relative Humidity
mass of water vapor present in air expressed as a percentage of the mass that would be present in an equal volume of saturated air at the same temperature. Used to quantify and maintain lab. conditions
51
Restriction
Measurement of static pressure at a single point
52
Rise Over Initial (ROI)
Terminal pressure measurement condition defined by the pressure increase above the initial restriction
53
RS-232 connector
type of connector currently sued for communication between the dust feeders and flow bench computers. Specifically, it is the traditional name for a series of standards for serial binary single0ended data and control signals connecting between DTE and DCE
54
Sampling Rate
Number of samples per unit time taken from a continuous signal to obtain a discrete signal or a set of discrete data points.
55
Scavenge Air Flow
measure of the quantity of air used to remove the collected dust from a precleaner
56
Scavenge Can
device used in active scavenge applications to collect contaminate from the scavenged airflow before it reaches the scavenge pump
57
Separator
Device usually using inertial or centrifugal means to remove a portion of the test dust prior to reaching the filter element
58
Separator Efficiency
percentage of dust fed that is removed by the separator from the unit under test before it reaches the primary and/or secondary element
59
Static Pressure
pressure in a duct, at the observed air flow rate, measured by connecting a pressure gauge to a hole or holes drilled in the wall of the duct
60
Terminal Condition (1)
restriction or differential pressure reaches a specified or agreed value
61
Terminal Condition (2)
dust-removing efficiency or some other performance parameter falls to a specified or agreed value
62
Test Air Flow
measure of the quantity of air drawn through the air cleaner outlet per unit time
63
Total Efficiency
measure of how much contaminate gets past the unit under test. The total dust fed minus the absolute gain divided by the total dust fed.
64
Transducer
differential pressure sensor that measures air pressure at specified points in the test system and generates an electronic signal as a function of the pressure imposed
65
Transition
ductwork component used to attach a ductwork section of one size to a section of a different size
66
UV light
used to examine elements for leak paths after Visolite is fed at the rated air flow
67
Vaccuation Valve
valve attached to an air cleaner housing or precleaner that allows for removal or "vaccuation" of dust from the housing
68
V-Cone Flow Meter
device used to measure flow rates in the Main Flow bench of the Engine Air Lab installed between the test station and the pump
69
Variable Frequency Drive
adjustable-speed drive used in electro-mechanical drive systems to control AC motor speed and torque by varying motor input frequency and voltage. Used to control the air lab pumps
70
Vibrator
device usually attached to a dust line or dust jar and used to assist in moving dust to its desired location

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