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Glossary Teledyne API - T100 UV Fluorescence SO2 Analyzer
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Term Description/Definition
LCD
Liquid Crystal Display
LED
Light Emitting Diode
LPM
Liters Per Minute
MFC
Mass Flow Controller
M/R
Measure/Reference
MOLAR MASS the mass, expressed in grams, of 1 mole of a specific substance. Conversely, one mole is
the amount of the substance needed for the molar mass to be the same number in grams
as the atomic mass of that substance.
EXAMPLE: The atomic weight of Carbon is 12 therefore the molar mass of Carbon is 12
grams. Conversely, one mole of carbon equals the amount of carbon atoms that weighs
12 grams.
Atomic weights can be found on any Periodic Table of Elements.
NDIR
Non-Dispersive Infrared
NIST-SRM
National Institute of Standards and Technology - Standard Reference Material
PC
Personal Computer
PCA Printed Circuit Assembly, the PCB with electronic components, ready to use
PC/AT
Personal Computer / Advanced Technology
PCB Printed Circuit Board, the bare board without electronic component
PFA Perfluoroalkoxy, an inert polymer; one of the polymers that Du Pont markets as Teflon
®
PLC Programmable Logic Controller, a device that is used to control instruments based on a
logic level signal coming from the analyzer
PLD
Programmable Logic Device
PLL
Phase Lock Loop
PMT Photo Multiplier Tube, a vacuum tube of electrodes that multiply electrons collected and
charged to create a detectable current signal
P/N (or PN)
Part Number
PSD
Prevention of Significant Deterioration
PTFE Polytetrafluoroethylene, a very inert polymer material used to handle gases that may react
on other surfaces; one of the polymers that Du Pont markets as Teflon
®
PVC Poly Vinyl Chloride, a polymer used for downstream tubing
Rdg Reading
RS-232 specification and standard describing a serial communication method between DTE (Data
Terminal Equipment) and DCE (Data Circuit-terminating Equipment) devices, using a
maximum cable-length of 50 feet
RS-485 specification and standard describing a binary serial communication method among
multiple devices at a data rate faster than RS-232 with a much longer distance between
06807C DCN6650