User guide

Term Description
I-E67-84-1B February,2002 1-8
HotKey
A short-cut that moves the user from the View
Configure State to the Modify Configure State
of Operation.
Icon
A text or symbolic image representing a set
function, condition, or engineering unit.
Impedance
A measure of the total opposition to current
flow in an alternating-current circuit.
Isopotential
Point
The potential of an electrochemical sensor
that is independent to sample fluid
temperature changes.
LCD
Liquid Crystal Display. The custom three and
one-half digit primary display, six-character
alpha-numeric secondary field, and supporting
icons that allow for local readout of the
process variable, programming of analyzer
functions, and local indication of fault,
hold, and relay state conditions.
Non-volatile
Memory
Memory that retains programmed information
such as configuration and calibration
parameters, even when power is removed.
ORP
Oxidation-Reduction Potential. The potential
created during a chemical reaction in which
one or more electrons are transferred from one
atom or molecule to another.
PCB
Printed Circuit Board. A flat board which
contains pads for integrated circuit chips,
components, connections, and electrically
conductive pathways between those elements
that function together to form an electronic
circuit.
pH
Potential of Hydrogen. A measure of the
acidity or alkalinity of a solution,
numerically equal to 7 for neutral solutions,
increasing with increasing alkalinity and
decreasing with increasing acidity.
RTD
Resistive Temperature Detector. An element
whose resistance has a relationship with the
temperature of its surroundings.
SEEPROM
Serial Electrically Erasable Programmable Read
Only Memory. A type of non-volatile memory
that can be electrically programmed, erased,
and read using serial communication
techniques.