Glossary “piezoelectricity” Definition:
Voltage produced by the application of pressure or vibration to certain crystals.
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piezoresistive
Glossary “piezoresistive” Definition:
Sensor whose resistance varies in relation to pressure or force applied to it. A piezoresistive sensor receives a constant reference voltage and returns a variable signal in relation to its varying resistance in relationship to pressure.
piezoresistive sensor
Glossary “piezoresistive sensor” Definition:
Knock sensor is sensitive to pressure changes or vibrations
pickup tube
Glossary “pickup tube” Definition:
1). A tube extending from the outlet of the receiver almost to the bottom of the tank to ensure that 100% liquid is supplied to the liquid line or metering device. 2. Tube used to transfer fuel or oil from the storage tank.
pico
Glossary “pico” Definition:
The prefix representing the number. 0.000,000,000,001
PID
Glossary “PID” Definition:
Parameter Identification Data; The operating parameters of a sensor or device.
piezoelectric
Glossary “piezoelectric” Definition:
A crystal property which causes a voltage to be developed across the crystal when mechanical stress is applied.
pickup truck
Glossary “pickup truck” Definition:
Type of vehicle having an open cargo bed behind an enclosed cab.
piano wire
Glossary “piano wire” Definition:
Fine steel wire that can be used to cut the adhesive around glass.
pick
Glossary “pick” Definition:
Tool used to reach into confined spaces for removing small components, dings and dents.
picking hammer
Glossary “picking hammer” Definition:
Hammer with a pointed end used to raise small dents from the inside, and a flat end for hammer-and-dolly work to remove high spots and ripples.
pickup
Glossary “pickup” Definition:
1). Vehicle acceleration. 2). Term used for pickup truck.
pickup coil
Glossary “pickup coil” Definition:
Engine speed sensor in an electronic engine system.
Pi
Glossary “Pi” Definition:
Mathematical constant which is equal to the ratio of the circumference of a circle to its diameter. Approximately 3.1415927
photovoltaic diode
Glossary “photovoltaic diode” Definition:
Device having a junction of two dissimilar metals that produces an electrical signal proportional to the amount of light that strikes it.
physical hazards
Glossary “physical hazards” Definition:
Any personal hazards, such as excessive noise, temperature, pressure, and rotating equipment.
physical properties
Glossary “physical properties” Definition:
Properties that pertain to the physics of a material, such as melting point, density, electrical and thermal conductivity, specific heat, and coefficient of thermal expansion.
phototransistor
Glossary “phototransistor” Definition:
Bipolar transistor that has gain and produces collector current when light shines on its collector-base junction.
photochemical smog
Glossary “photochemical smog” Definition:
A noxious, unhealthy gaseous compound in the atmosphere, formed by the interaction of various chemicals such as the pollutants hydrocarbons (HC) and oxides of nitrogen (NOx) in the presence of sunlight.
photochemically reactive solvents
Glossary “photochemically reactive solvents” Definition:
Common strong paint solvents such as aromatics, the branch chain ketones, diacetone alcohols and trichlorethylene. Solvents may contain up to 20 % toluene, 8 % xylene, 20 % methylisobutyl ketone, or 20 % trichlorethylene. Emits pollutants into the atmosphere that do not dissipate.