Ametek 3050-AP, Руководство пользователя

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5-3 Glossary of Terms
RS-485 A serial communication protocol, in which the RS-485 serial output
of a Model 3050-AP analyzer may be input to a converter, which
converts it to RS-232 protocol, then input to one of the COM ports
of a PC. Alternatively, RS-485 may be run directly into a PC with
an RS-485 interface board installed. RS-485 may be run in either
2-wire mode, or 4-wire mode, over distances up to 1000 meters
between the analyzer and the PC or converter.
Sample Gas that is being measured for moisture content.
SCCM Standard cubic centimeters per minute (101.3 Kpa, 0
°
C)
Sensor Frequency Signal frequency produced by the QCM module. This frequency
is a function of moisture content of the sample gas.
Sensor Saver A mode in which the analyzer timing is configured such that the
reference gas is flowing for a greater portion of time than the sample
gas. This helps to prolong the life of the QCM sensor.
SLPM Standard liters per minute (101.3 Kpa, 0
°
C)
Span Adjustment The adjustment of the analyzers response to match the target value
of a known gas concentration.
System Alarm The analyzer operating condition which requires prompt user at-
tention.
Tabular Display A table, on which results from one or more 3050-AP analyzers are
displayed in real-time.
Trend Display A line plot of 3050-AP analyzer results with respect to time.
Two-Wire Mode RS-485 communication mode, in which only two wires are used,
connected to the “Send Data” and “Receive Data” terminals. Si-
multaneous bi-directional communications are not possible using
two-wire mode.
Units Specific engineering units in which the Model 3050-AP moisture
results are represented. Examples are ppmv, ppmw, etc..