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68
Teledyne API – Model T400 O
3
Analyzer
083730400A DCN8130
2.5.4 S
ETUP
>A
UTO
C
AL
(
WITH
V
ALVE
O
PTION
)
Auto Cal, automatic zero/span calibration or calibration check, is available with installed
valve options (see Sections 2.3.2 and 4.3).
2.5.5 S
ETUP
>V
ARS
Vars are software variables that define operational parameters automatically set by the
instrument’s firmware, and are user-adjustable through this menu. Access the menu to see
the list of variables; select a variable to view its description; touch the Edit button to
change its setting(s).
Table 2-10. List of Variables with Descriptions
VARIABLE
DESCRIPTION
NOTE: This list includes several of the more common Vars; selecting any Var in the NumaView™ software
interface will display its description in the information field to its right. Depending on configuration, some, all,
or more of these variables appear in your instrument’s Vars menu.
Conc Precision (or
PRIGAS/SECGAS
Precision)
Sets the number of significant digits to the right of the decimal point display
of concentration and stability values. (“PRIGAS” = primary gas with two or
more other gases; “SECGAS” = secondary gas)
Daylight Savings Enable
Enable or disable Daylight Savings Time (also see
Setup>Instrument>Date/Time Settings)
Dilution Factor Option
Sets the instrument to compensate for diluted sample gas, such as in
continuous emission monitoring (CEM) where the quality of gas in a smoke
stack is being tested and the sampling method used to remove the gas from
the stack dilutes the gas. Once the degree of dilution is known, this feature
allows the user to add an appropriate scaling factor to the analyzer’s O
3
concentration calculations so that the undiluted values for measurement
range and concentration are shown on the instrument’s front panel display
and reported via the instrument’s various outputs.
Dynamic Zero Enable
Dynamic zero automatically adjusts offset and slope when performing a zero
point calibration during an AutoCal (Section 4.3).
Dynamic Span Enable
Dynamic span automatically adjusts the offset and slope when performing a
span point calibration during an AutoCal (Section 4.3).
[Enable] Software
Maintenance Mode
Set instrument to continue sampling, while ignoring calibration, diagnostic,
and reset instrument commands. This feature is of particular use for
instruments connected to Multidrop (Section 2.3.1.7) or Hessen protocol
networks (see Sections 2.5.10, 3.4.2).
Instrument ID
Set unique identifier number for the instrument when it is connected with
other instruments in multidrop configuration or on the same Ethernet LAN, or
when applying MODBUS or Hessen protocols. (Setup>Vars>Instrument ID)
Range Mode
Controls range mode, single (SNGL) or dual (DUAL).
System Hours
Total system runtime hours
TPC Enable
Enables or disables the Temperature and Pressure Compensation (TPC)
feature (Section 6.2.2).
User Conc Units
Change the concentration units of measure.
Содержание T400
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