YSI 3100 - Manual (Page 48)

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NIST - National Institute of Standards and Technology. The US government agency that defines
measurement standards in the United States.
ohm (
Ω
) - SI unit of resistance
OIML - Organisation Internationale de Métrologie Légale is a treaty organization for the
harmonization of practical applications of measurement standards.
platinum black - Platinum precipitated from a solution of the (IV) chloride by reducing agents.
A velvety-black powder.
polarization - The separation of the positive and negative charges of a molecule by an external
agent.
Pyrex - A trademark name for heat-resistant and chemical-resistant glass.
reference voltage - A closely controlled d.c. or a.c. voltage used as a reference.
replatinize - To deposit a new layer of platinum black on an electrode.
resistance (R) - Opposition to the passage of current that causes electrical energy to be
transformed into heat.
resistivity - An intrinsic property of a conductor, which gives the resistance in terms of its
dimensions; the resistance between opposite faces of a one-centimeter cube of a given material;
the inverse of conductivity.
SI - Système International is the international system of units.
siemens (S) - SI unit of electrical conductance; the reciprocal of an ohm; equivalent to a mho.
temperature correction - An adjustment made to a measurement to compensate for the
difference between the measured and nominal temperatures.
temperature coefficient - The change in any particular physical quantity per degree change in
temperature.
voltage - Electromotive force or potential expressed in volts.