Honeywell enCore Series Manual page 310

14
Pipeline
Pipeline is the 0.5 to >2 m diameter steel pipe. The instrument uses
much smaller diameters. The production and installation of tubing is
entirely different from pipelines.
Place of use
or installation site is the room or position at which the measurement
device is located. It must satisfy the requirements defined by the man-
ufacturers, authorities and operators.
Power-limited circuit
A power-limited circuit is a circuit separated from other circuits by at
least BASIC INSULATION in which the direct voltage (U) is no greater
than 60 V. The current which can occur in the circuit is limited by cer-
tain measures to a value of less than 200/U. These measures must
interrupt the circuit within 120 seconds if this value is exceeded.
Process gas
is the gas which is to be analyzed or measured. It is supplied to the
measuring equipment in normal operation and is also known as the
operating sample gas
Q
Qualified electrician
A person who has the ability, because of his or her technical training,
knowledge and experience, as well as his or her knowledge of the
relevant standards and regulations, to carry out work in electrical sys-
tems, and to recognize and avoid possible hazards independently. A
qualified electrician receives training for the specific location in which
he or she works, and is acquainted with the relevant standards and
regulations.
R
Reference potential
is a potential to which all other voltages are referred. The potential of
a grounded point (ground potential) is used for this purpose and
gives it a value of zero volts. Since ground connections, like all con-
nections, have different resistances, voltage differences or potential
differences may occur between grounded points and system parts. A
correctly designed low resistance equipotential bonding cable
between the system parts or devices can eliminate these ground
potential differences.
GasLab Q2 User Manual (N )
Glossary
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